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TRADJENTA®
(linagliptin) Tablets, for Oral Use
TRADJENTA (linagliptin) tablets contain, as the active ingredient, an orally-active inhibitor of the dipeptidyl peptidase-4 (DPP-4) enzyme.
Linagliptin is described chemically as 1H-Purine-2,6-dione, 8-[(3R)-3-amino-1-piperidinyl]-7-(2-butyn-1-yl)-3,7-dihydro-3-methyl-1-[(4-methyl-2quinazolinyl)methyl]The empirical formula is C25H28N8O2 and the molecular weight is 472.54 g/mol. The structural formula is:
 |
Linagliptin is a white to yellowish, not or only slightly hygroscopic solid substance. It is very slightly soluble in water (0.9 mg/mL). Linagliptin is soluble in methanol (ca. 60 mg/mL), sparingly soluble in ethanol (ca. 10 mg/mL), very slightly soluble in isopropanol (<1 mg/mL), and very slightly soluble in acetone (ca. 1 mg/mL).
Each film-coated tablet of TRADJENTA contains 5 mg of linagliptin free base and the following inactive ingredients: mannitol, pregelatinized starch, corn starch, copovidone, and magnesium stearate. In addition, the film coating contains the following inactive ingredients: hypromellose, titanium dioxide, talc, polyethylene glycol, and red ferric oxide.
TRADJENTA is indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus [see Clinical Studies].
TRADJENTA should not be used in patients with type 1 diabetes or for the treatment of diabetic ketoacidosis, as it would not be effective in these settings.
TRADJENTA has not been studied in patients with a history of pancreatitis. It is unknown whether patients with a history of pancreatitis are at an increased risk for the development of pancreatitis while using TRADJENTA [see WARNINGS AND PRECAUTIONS].
The recommended dose of TRADJENTA is 5 mg once daily.
TRADJENTA tablets can be taken with or without food.
When TRADJENTA is used in combination with an insulin secretagogue (e.g., sulfonylurea) or with insulin, a lower dose of the insulin secretagogue or insulin may be required to reduce the risk of hypoglycemia [see WARNINGS AND PRECAUTIONS].
TRADJENTA (linagliptin) 5 mg tablets are light red, round, biconvex, bevel-edged, film-coated tablets with “D5” debossed on one side and the Boehringer Ingelheim logo debossed on the other side.
TRADJENTA tablets are available as light red, round, biconvex, bevel-edged, film-coated tablets containing 5 mg of linagliptin. TRADJENTA tablets are debossed with “D5” on one side and the Boehringer Ingelheim logo on the other side.
They are supplied as follows:
Bottles of 30 (NDC 0597-0140-30)
Bottles of 90 (NDC 0597-0140-90)
Cartons containing 10 blister cards of 10 tablets each (10 x 10) (NDC 0597-0140-61), institutional pack.
If repackaging is required, dispense in a tight container as defined in USP.
Store at 25°C (77°F); excursions permitted to 15°-30°C (59°-86°F) [see USP Controlled Room Temperature]. Store in a safe place out of reach of children.
Distributed by: Boehringer Ingelheim Pharmaceuticals, Inc. Ridgefield, CT 06877 USA. Revised: Aug 2017
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.
The safety evaluation of TRADJENTA 5 mg once daily in patients with type 2 diabetes is based on 14 placebo-controlled trials, 1 active-controlled study, and one study in patients with severe renal impairment. In the 14 placebo-controlled studies, a total of 3625 patients were randomized and treated with TRADJENTA 5 mg daily and 2176 with placebo. The mean exposure in patients treated with TRADJENTA across studies was 29.6 weeks. The maximum follow-up was 78 weeks.
TRADJENTA 5 mg once daily was studied as monotherapy in three placebo-controlled trials of 18 and 24 weeks’ duration and in five additional placebo-controlled studies lasting ≤18 weeks. The use of TRADJENTA in combination with other antihyperglycemic agents was studied in six placebo-controlled trials: two with metformin (12 and 24 weeks’ treatment duration); one with a sulfonylurea (18 weeks’ treatment duration); one with metformin and sulfonylurea (24 weeks’ treatment duration); one with pioglitazone (24 weeks’ treatment duration); and one with insulin (primary endpoint at 24 weeks).
In a pooled dataset of 14 placebo-controlled clinical trials, adverse reactions that occurred in ≥2% of patients receiving TRADJENTA (n = 3625) and more commonly than in patients given placebo (n = 2176), are shown in Table 1. The overall incidence of adverse events with TRADJENTA were similar to placebo.
Table 1: Adverse Reactions Reported in ≥2% of Patients Treated with TRADJENTA and Greater than Placebo in Placebo-Controlled Clinical Studies of TRADJENTA Monotherapy or Combination Therapy
| Number (%) of Patients | ||
| TRADJENTA 5 mg n = 3625 |
Placebo n = 2176 |
|
| Nasopharyngitis | 254 (7.0) | 132 (6.1) |
| Diarrhea | 119 (3.3) | 65 (3.0) |
| Cough | 76 (2.1) | 30 (1.4) |
Rates for other adverse reactions for TRADJENTA 5 mg vs placebo when TRADJENTA was used in combination with specific anti-diabetic agents were: urinary tract infection (3.1% vs 0%) and hypertriglyceridemia (2.4% vs 0%) when TRADJENTA was used as add-on to sulfonylurea; hyperlipidemia (2.7% vs 0.8%) and weight increased (2.3% vs 0.8%) when TRADJENTA was used as add-on to pioglitazone; and constipation (2.1% vs 1%) when TRADJENTA was used as add-on to basal insulin therapy.
Following 104 weeks’ treatment in a controlled study comparing TRADJENTA with glimepiride in which all patients were also receiving metformin, adverse reactions reported in ≥5% of patients treated with TRADJENTA (n = 776) and more frequently than in patients treated with a sulfonylurea (n = 775) were back pain (9.1% vs 8.4%), arthralgia (8.1% vs 6.1%), upper respiratory tract infection (8.0% vs 7.6%), headache (6.4% vs 5.2%), cough (6.1% vs 4.9%), and pain in extremity (5.3% vs 3.9%).
Other adverse reactions reported in clinical studies with treatment of TRADJENTA were hypersensitivity (e.g., urticaria, angioedema, localized skin exfoliation, or bronchial hyperreactivity) and myalgia. In the clinical trial program, pancreatitis was reported in 15.2 cases per 10,000 patient year exposure while being treated with TRADJENTA compared with 3.7 cases per 10,000 patient year exposure while being treated with comparator (placebo and active comparator, sulfonylurea). Three additional cases of pancreatitis were reported following the last administered dose of linagliptin.
In the placebo-controlled studies, 199 (6.6%) of the total 2994 patients treated with TRADJENTA 5 mg reported hypoglycemia compared to 56 patients (3.6%) of 1546 placebo-treated patients. The incidence of hypoglycemia was similar to placebo when TRADJENTA was administered as monotherapy or in combination with metformin, or with pioglitazone. When TRADJENTA was administered in combination with metformin and a sulfonylurea, 181 of 792 (22.9%) patients reported hypoglycemia compared with 39 of 263 (14.8%) patients administered placebo in combination with metformin and a sulfonylurea. Adverse reactions of hypoglycemia were based on all reports of hypoglycemia. A concurrent glucose measurement was not required or was normal in some patients. Therefore, it is not possible to conclusively determine that all these reports reflect true hypoglycemia.
In the study of patients receiving TRADJENTA as add-on therapy to a stable dose of insulin for up to 52 weeks (n=1261), no significant difference in the incidence of investigator reported hypoglycemia, defined as all symptomatic or asymptomatic episodes with a self-measured blood glucose ≤70 mg/dL, was noted between the TRADJENTA-(31.4%) and placebo-(32.9%) treated groups. During the same time period, severe hypoglycemic events, defined as requiring the assistance of another person to actively administer carbohydrate, glucagon or other resuscitative actions, were reported in 11 (1.7%) of TRADJENTA treated patients and 7 (1.1%) of placebo treated patients. Events that were considered life-threatening or required hospitalization were reported in 3 (0.5%) patients on TRADJENTA and 1 (0.2%) on placebo.
TRADJENTA was compared to placebo as add-on to pre-existing antidiabetic therapy over 52 weeks in 133 patients with severe renal impairment (estimated GFR <30 mL/min). For the initial 12 weeks of the study, background antidiabetic therapy was kept stable and included insulin, sulfonylurea, glinides, and pioglitazone. For the remainder of the trial, dose adjustments in antidiabetic background therapy were allowed.
In general, the incidence of adverse events including severe hypoglycemia was similar to those reported in other TRADJENTA trials. The observed incidence of hypoglycemia was higher (TRADJENTA, 63% compared to placebo, 49%) due to an increase in asymptomatic hypoglycemic events especially during the first 12 weeks when background glycemic therapies were kept stable. Ten TRADJENTA-treated patients (15%) and 11 placebo-treated patients (17%) reported at least one episode of confirmed symptomatic hypoglycemia (accompanying finger stick glucose ≤54 mg/dL). During the same time period, severe hypoglycemic events, defined as an event requiring the assistance of another person to actively administer carbohydrate, glucagon or other resuscitative actions, were reported in 3 (4.4%) TRADJENTA-treated patients and 3 (4.6%) placebo-treated patients. Events that were considered life-threatening or required hospitalization were reported in 2 (2.9%) patients on TRADJENTA and 1 (1.5%) patient on placebo.
Renal function as measured by mean eGFR and creatinine clearance did not change over 52 weeks’ treatment compared to placebo.
Changes in laboratory findings were similar in patients treated with TRADJENTA 5 mg compared to patients treated with placebo.
Changes in laboratory values that occurred more frequently in the TRADJENTA group and ≥1% more than in the placebo group were increases in uric acid (1.3% in the placebo group, 2.7% in the TRADJENTA group).
In a placebo-controlled clinical trial with TRADJENTA in type 2 diabetes mellitus patients with micro-or macroalbuminuria, a mean increase of 30% in lipase concentrations from baseline to 24 weeks was observed in the TRADJENTA arm compared to a mean decrease of 2% in the placebo arm. Lipase levels above 3 times upper limit of normal were seen in 8.2% compared to 1.7% patients in the TRADJENTA and placebo arms, respectively.
No clinically meaningful changes in vital signs were observed in patients treated with TRADJENTA.
Additional adverse reactions have been identified during postapproval use of TRADJENTA. Because these reactions are reported voluntarily from a population of uncertain size, it is generally not possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
Rifampin decreased linagliptin exposure, suggesting that the efficacy of TRADJENTA may be reduced when administered in combination with a strong P-gp or CYP3A4 inducer. Therefore, use of alternative treatments is strongly recommended when linagliptin is to be administered with a strong P-gp or CYP3A4 inducer [see CLINICAL PHARMACOLOGY].
Included as part of the "PRECAUTIONS" Section
There have been postmarketing reports of acute pancreatitis, including fatal pancreatitis, in patients taking TRADJENTA. Take careful notice of potential signs and symptoms of pancreatitis. If pancreatitis is suspected, promptly discontinue TRADJENTA and initiate appropriate management. It is unknown whether patients with a history of pancreatitis are at increased risk for the development of pancreatitis while using TRADJENTA.
An association between DPP-4 inhibitor treatment and heart failure has been observed in cardiovascular outcomes trials for two other members of the DPP-4 inhibitor class. These trials evaluated patients with type 2 diabetes mellitus and atherosclerotic cardiovascular disease.
Consider the risks and benefits of TRADJENTA prior to initiating treatment in patients at risk for heart failure, such as those with a prior history of heart failure and a history of renal impairment, and observe these patients for signs and symptoms of heart failure during therapy. Advise patients of the characteristic symptoms of heart failure and to immediately report such symptoms. If heart failure develops, evaluate and manage according to current standards of care and consider discontinuation of TRADJENTA.
Insulin secretagogues and insulin are known to cause hypoglycemia. The use of TRADJENTA in combination with an insulin secretagogue (e.g., sulfonylurea) was associated with a higher rate of hypoglycemia compared with placebo in a clinical trial [see ADVERSE REACTIONS]. The use of TRADJENTA in combination with insulin in subjects with severe renal impairment was associated with a higher rate of hypoglycemia [see ADVERSE REACTIONS]. Therefore, a lower dose of the insulin secretagogue or insulin may be required to reduce the risk of hypoglycemia when used in combination with TRADJENTA.
There have been postmarketing reports of serious hypersensitivity reactions in patients treated with TRADJENTA. These reactions include anaphylaxis, angioedema, and exfoliative skin conditions. Onset of these reactions occurred within the first 3 months after initiation of treatment with TRADJENTA, with some reports occurring after the first dose. If a serious hypersensitivity reaction is suspected, discontinue TRADJENTA, assess for other potential causes for the event, and institute alternative treatment for diabetes.
Angioedema has also been reported with other dipeptidyl peptidase-4 (DPP-4) inhibitors. Use caution in a patient with a history of angioedema to another DPP-4 inhibitor because it is unknown whether such patients will be predisposed to angioedema with TRADJENTA.
There have been postmarketing reports of severe and disabling arthralgia in patients taking DPP-4 inhibitors. The time to onset of symptoms following initiation of drug therapy varied from one day to years. Patients experienced relief of symptoms upon discontinuation of the medication. A subset of patients experienced a recurrence of symptoms when restarting the same drug or a different DPP-4 inhibitor. Consider DPP-4 inhibitors as a possible cause for severe joint pain and discontinue drug if appropriate.
Postmarketing cases of bullous pemphigoid requiring hospitalization have been reported with DPP-4 inhibitor use. In reported cases, patients typically recovered with topical or systemic immunosuppressive treatment and discontinuation of the DPP-4 inhibitor. Tell patients to report development of blisters or erosions while receiving TRADJENTA. If bullous pemphigoid is suspected, TRADJENTA should be discontinued and referral to a dermatologist should be considered for diagnosis and appropriate treatment.
There have been no clinical studies establishing conclusive evidence of macrovascular risk reduction with TRADJENTA tablets.
Advise the patient to read the FDA-approved patient labeling (Medication Guide)
Instruct patients to read the Medication Guide before starting TRADJENTA therapy and to reread it each time the prescription is renewed. Instruct patients to inform their doctor or pharmacist if they develop any unusual symptom, or if any known symptom persists or worsens.
Inform patients of the potential risks and benefits of TRADJENTA and of alternative modes of therapy. Also inform patients about the importance of adherence to dietary instructions, regular physical activity, periodic blood glucose monitoring and A1C testing, recognition and management of hypoglycemia and hyperglycemia, and assessment for diabetes complications. Advise patients to seek medical advice promptly during periods of stress such as fever, trauma, infection, or surgery, as medication requirements may change.
Inform patients that acute pancreatitis has been reported during postmarketing use of TRADJENTA. Inform patients that persistent severe abdominal pain, sometimes radiating to the back, which may or may not be accompanied by vomiting, is the hallmark symptom of acute pancreatitis. Instruct patients to discontinue TRADJENTA promptly and contact their physician if persistent severe abdominal pain occurs [see WARNINGS AND PRECAUTIONS].
Inform patients of the signs and symptoms of heart failure. Before initiating TRADJENTA, patients should be asked about a history of heart failure or other risk factors for heart failure including moderate to severe renal impairment. Instruct patients to contact their healthcare provider as soon as possible if they experience symptoms of heart failure, including increasing shortness of breath, rapid increase in weight or swelling of the feet [see WARNINGS AND PRECAUTIONS].
Inform patients that the incidence of hypoglycemia is increased when TRADJENTA is added to a sulfonylurea or insulin and that a lower dose of the sulfonylurea or insulin may be required to reduce the risk of hypoglycemia.
Inform patients that serious allergic reactions, such as anaphylaxis, angioedema, and exfoliative skin conditions, have been reported during postmarketing use of TRADJENTA. If symptoms of allergic reactions (such as rash, skin flaking or peeling, urticaria, swelling of the skin, or swelling of the face, lips, tongue, and throat that may cause difficulty in breathing or swallowing) occur, patients must stop taking TRADJENTA and seek medical advice promptly.
Inform patients that severe and disabling joint pain may occur with this class of drugs. The time to onset of symptoms can range from one day to years. Instruct patients to seek medical advice if severe joint pain occurs [see WARNINGS AND PRECAUTIONS].
Inform patients that bullous pemphigoid may occur with this class of drugs. Instruct patients to seek medical advice if blisters or erosions occur [see WARNINGS AND PRECAUTIONS].
Instruct patients to take TRADJENTA only as prescribed. If a dose is missed, advise patients not to double their next dose.
Inform patients that response to all diabetic therapies should be monitored by periodic measurements of blood glucose and A1C levels, with a goal of decreasing these levels toward the normal range. A1C monitoring is especially useful for evaluating long-term glycemic control.
Linagliptin did not increase the incidence of tumors in male and female rats in a 2-year study at doses of 6, 18, and 60 mg/kg. The highest dose of 60 mg/kg is approximately 418 times the clinical dose of 5 mg/day based on AUC exposure. Linagliptin did not increase the incidence of tumors in mice in a 2-year study at doses up to 80 mg/kg (males) and 25 mg/kg (females), or approximately 35-and 270-times the clinical dose based on AUC exposure. Higher doses of linagliptin in female mice (80 mg/kg) increased the incidence of lymphoma at approximately 215-times the clinical dose based on AUC exposure.
Linagliptin was not mutagenic or clastogenic with or without metabolic activation in the Ames bacterial mutagenicity assay, a chromosomal aberration test in human lymphocytes, and an in vivo micronucleus assay.
In fertility studies in rats, linagliptin had no adverse effects on early embryonic development, mating, fertility, or bearing live young up to the highest dose of 240 mg/kg (approximately 943-times the clinical dose based on AUC exposure).
The limited data with TRADJENTA use in pregnant women are not sufficient to inform of drug-associated risk for major birth defects and miscarriage. There are risks to the mother and fetus associated with poorly controlled diabetes in pregnancy [see Clinical Considerations].
In animal reproduction studies, no adverse developmental effects were observed when linagliptin was administered to pregnant rats during the period of organogenesis at doses similar to the maximum recommended clinical dose, based on exposure [see Data].
The estimated background risk of major birth defects is 6-10% in women with pre-gestational diabetes with a HbA1c>7 and has been reported to be as high as 20-25% in women with HbA1c>10. The estimated background risk of miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.
Disease-associated Maternal and/or Embryo/Fetal Risk
Poorly controlled diabetes in pregnancy increases the maternal risk for diabetic ketoacidosis, pre-eclampsia, and delivery complications. Poorly controlled diabetes increases the fetal risk for major birth defects, still birth, and macrosomia related morbidity.
Animal Data
No adverse developmental outcome was observed when linagliptin was administered to pregnant Wistar Han rats and Himalayan rabbits during the period of organogenesis at doses up to 240 mg/kg and 150 mg/kg, respectively. These doses represent approximately 943 times (rats) and 1943 times (rabbits) the 5 mg clinical dose, based on exposure. No adverse functional, behavioral, or reproductive outcome was observed in offspring following administration of linagliptin to Wistar Han rats from gestation day 6 to lactation day 21 at a dose 49 times the 5 mg clinical dose, based on exposure.
There is no information regarding the presence of linagliptin in human milk, the effects on the breastfed infant, or the effects on milk production. However, linagliptin is present in rat milk. Therefore, the developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for TRADJENTA and any potential adverse effects on the breastfed child from TRADJENTA or from the underlying maternal condition.
Safety and effectiveness of TRADJENTA in pediatric patients under 18 years of age have not been established.
There were 4040 type 2 diabetes patients treated with linagliptin 5 mg from 15 clinical trials of TRADJENTA; 1085 (27%) were 65 years and over, while 131 (3%) were 75 years and over. Of these patients, 2566 were enrolled in 12 double-blind placebo-controlled studies; 591 (23%) were 65 years and over, while 82 (3%) were 75 years and over. No overall differences in safety or effectiveness were observed between patients 65 years and over and younger patients. Therefore, no dose adjustment is recommended in the elderly population. While clinical studies of linagliptin have not identified differences in response between the elderly and younger patients, greater sensitivity of some older individuals cannot be ruled out.
No dose adjustment is recommended for patients with renal impairment [see CLINICAL PHARMACOLOGY].
No dose adjustment is recommended for patients with hepatic impairment [see CLINICAL PHARMACOLOGY].
In the event of an overdose with TRADJENTA, contact the Poison Control Center. Employ the usual supportive measures (e.g., remove unabsorbed material from the gastrointestinal tract, employ clinical monitoring, and institute supportive treatment) as dictated by the patient’s clinical status. Removal of linagliptin by hemodialysis or peritoneal dialysis is unlikely.
During controlled clinical trials in healthy subjects, with single doses of up to 600 mg of TRADJENTA (equivalent to 120 times the recommended daily dose) there were no dose-related clinical adverse drug reactions. There is no experience with doses above 600 mg in humans.
TRADJENTA is contraindicated in patients with a history of a hypersensitivity reaction to linagliptin, such as anaphylaxis, angioedema, exfoliative skin conditions, urticaria, or bronchial hyperreactivity [see WARNINGS AND PRECAUTIONS and ADVERSE REACTIONS].
Linagliptin is an inhibitor of DPP-4, an enzyme that degrades the incretin hormones glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP). Thus, linagliptin increases the concentrations of active incretin hormones, stimulating the release of insulin in a glucose-dependent manner and decreasing the levels of glucagon in the circulation. Both incretin hormones are involved in the physiological regulation of glucose homeostasis. Incretin hormones are secreted at a low basal level throughout the day and levels rise immediately after meal intake. GLP-1 and GIP increase insulin biosynthesis and secretion from pancreatic beta-cells in the presence of normal and elevated blood glucose levels. Furthermore, GLP-1 also reduces glucagon secretion from pancreatic alpha-cells, resulting in a reduction in hepatic glucose output.
Linagliptin binds to DPP-4 in a reversible manner and thus increases the concentrations of incretin hormones. Linagliptin glucose dependently increases insulin secretion and lowers glucagon secretion, thus resulting in better regulation of glucose homeostasis. Linagliptin binds selectively to DPP-4, and selectively inhibits DPP4 but not DPP-8 or DPP-9 activity in vitro at concentrations approximating therapeutic exposures.
In a randomized, placebo-controlled, active-comparator, 4-way crossover study, 36 healthy subjects were administered a single oral dose of linagliptin 5 mg, linagliptin 100 mg (20 times the recommended dose), moxifloxacin, and placebo. No increase in QTc was observed with either the recommended dose of 5 mg or the 100-mg dose. At the 100-mg dose, peak linagliptin plasma concentrations were approximately 38-fold higher than the peak concentrations following a 5-mg dose.
The pharmacokinetics of linagliptin has been characterized in healthy subjects and patients with type 2 diabetes. After oral administration of a single 5-mg dose to healthy subjects, peak plasma concentrations of linagliptin occurred at approximately 1.5 hours post dose (Tmax); the mean plasma area under the curve (AUC) was 139 nmol*h/L and maximum concentration (Cmax) was 8.9 nmol/L.
Plasma concentrations of linagliptin decline in at least a biphasic manner with a long terminal half-life (>100 hours), related to the saturable binding of linagliptin to DPP-4. The prolonged elimination phase does not contribute to the accumulation of the drug. The effective half-life for accumulation of linagliptin, as determined from oral administration of multiple doses of linagliptin 5 mg, is approximately 12 hours. After once-daily dosing, steady-state plasma concentrations of linagliptin 5 mg are reached by the third dose, and Cmax and AUC increased by a factor of 1.3 at steady state compared with the first dose. The intra-subject and inter-subject coefficients of variation for linagliptin AUC were small (12.6% and 28.5%, respectively). Plasma AUC of linagliptin increased in a less than dose-proportional manner in the dose range of 1 to 10 mg. The pharmacokinetics of linagliptin is similar in healthy subjects and in patients with type 2 diabetes.
The absolute bioavailability of linagliptin is approximately 30%. High-fat meal reduced Cmax by 15% and increased AUC by 4%; this effect is not clinically relevant. TRADJENTA may be administered with or without food.
The mean apparent volume of distribution at steady state following a single intravenous dose of linagliptin 5 mg to healthy subjects is approximately 1110 L, indicating that linagliptin extensively distributes to the tissues. Plasma protein binding of linagliptin is concentration-dependent, decreasing from about 99% at 1 nmol/L to 75%-89% at ≥30 nmol/L, reflecting saturation of binding to DPP-4 with increasing concentration of linagliptin. At high concentrations, where DPP-4 is fully saturated, 70% to 80% of linagliptin remains bound to plasma proteins and 20% to 30% is unbound in plasma. Plasma binding is not altered in patients with renal or hepatic impairment.
Following oral administration, the majority (about 90%) of linagliptin is excreted unchanged, indicating that metabolism represents a minor elimination pathway. A small fraction of absorbed linagliptin is metabolized to a pharmacologically inactive metabolite, which shows a steady-state exposure of 13.3% relative to linagliptin.
Following administration of an oral [14C]-linagliptin dose to healthy subjects, approximately 85% of the administered radioactivity was eliminated via the enterohepatic system (80%) or urine (5%) within 4 days of dosing. Renal clearance at steady state was approximately 70 mL/min.
An open-label pharmacokinetic study evaluated the pharmacokinetics of linagliptin 5 mg in male and female patients with varying degrees of chronic renal impairment. The study included 6 healthy subjects with normal renal function (creatinine clearance [CrCl] ≥80 mL/min), 6 patients with mild renal impairment (CrCl 50 to <80 mL/min), 6 patients with moderate renal impairment (CrCl 30 to <50 mL/min), 10 patients with type 2 diabetes mellitus and severe renal impairment (CrCl <30 mL/min), and 11 patients with type 2 diabetes mellitus and normal renal function. Creatinine clearance was measured by 24-hour urinary creatinine clearance measurements or estimated from serum creatinine based on the Cockcroft-Gault formula.
Under steady-state conditions, linagliptin exposure in patients with mild renal impairment was comparable to healthy subjects.
In patients with moderate renal impairment under steady-state conditions, mean exposure of linagliptin increased (AUCτ,ss by 71% and Cmax by 46%) compared with healthy subjects. This increase was not associated with a prolonged accumulation half-life, terminal half-life, or an increased accumulation factor. Renal excretion of linagliptin was below 5% of the administered dose and was not affected by decreased renal function.
Patients with type 2 diabetes mellitus and severe renal impairment showed steady-state exposure approximately 40% higher than that of patients with type 2 diabetes mellitus and normal renal function (increase in AUCτ,ss by 42% and Cmax by 35%). For both type 2 diabetes mellitus groups, renal excretion was below 7% of the administered dose.
These findings were further supported by the results of population pharmacokinetic analyses.
In patients with mild hepatic impairment (Child-Pugh class A), steady-state exposure (AUCτ,ss) of linagliptin was approximately 25% lower and Cmax,ss was approximately 36% lower than in healthy subjects. In patients with moderate hepatic impairment (Child-Pugh class B), AUCss of linagliptin was about 14% lower and Cmax,ss was approximately 8% lower than in healthy subjects. Patients with severe hepatic impairment (Child-Pugh class C) had comparable exposure of linagliptin in terms of AUC0-24 and approximately 23% lower Cmax compared with healthy subjects. Reductions in the pharmacokinetic parameters seen in patients with hepatic impairment did not result in reductions in DPP-4 inhibition.
No dose adjustment is necessary based on BMI/weight. BMI/weight had no clinically meaningful effect on the pharmacokinetics of linagliptin based on a population pharmacokinetic analysis.
No dose adjustment is necessary based on gender. Gender had no clinically meaningful effect on the pharmacokinetics of linagliptin based on a population pharmacokinetic analysis.
Age did not have a clinically meaningful impact on the pharmacokinetics of linagliptin based on a population pharmacokinetic analysis.
Studies characterizing the pharmacokinetics of linagliptin in pediatric patients have not yet been performed.
No dose adjustment is necessary based on race. Race had no clinically meaningful effect on the pharmacokinetics of linagliptin based on available pharmacokinetic data, including subjects of White, Hispanic, Black, and Asian racial groups.
Linagliptin is a weak to moderate inhibitor of CYP isozyme CYP3A4, but does not inhibit other CYP isozymes and is not an inducer of CYP isozymes, including CYP1A2, 2A6, 2B6, 2C8, 2C9, 2C19, 2D6, 2E1, and 4A11.
Linagliptin is a P-glycoprotein (P-gp) substrate, and inhibits P-gp mediated transport of digoxin at high concentrations. Based on these results and in vivo drug interaction studies, linagliptin is considered unlikely to cause interactions with other P-gp substrates at therapeutic concentrations.
Strong inducers of CYP3A4 or P-gp (e.g., rifampin) decrease exposure to linagliptin to subtherapeutic and likely ineffective concentrations. For patients requiring use of such drugs, an alternative to linagliptin is strongly recommended. In vivo studies indicated evidence of a low propensity for causing drug interactions with substrates of CYP3A4, CYP2C9, CYP2C8, P-gp and organic cationic transporter (OCT). No dose adjustment of TRADJENTA is recommended based on results of the described pharmacokinetic studies.
Table 2: Effect of Coadministered Drugs on Systemic Exposure of Linagliptin
| Coadministered Drug | Dosing of Coadministered Drug* | Dosing of Linagliptin* | Geometric Mean Ratio (ratio with/without coadministered drug) No effect=1.0 |
||
| AUC† | Cmax | ||||
| No dosing adjustments required for linagliptin when given with the following coadministered drugs: | |||||
| Metformin | 850 mg TID | 10 mg QD | 1.20 | 1.03 | |
| Glyburide | 1.75 mg# | 5 mg QD | 1.02 | 1.01 | |
| Pioglitazone | 45 mg QD | 10 mg QD | 1.13 | 1.07 | |
| Ritonavir | 200 mg BID | 5 mg# | 2.01 | 2.96 | |
| The efficacy of JENTADUETO XR may be reduced when administered in combination with strong inducers of CYP3A4 or P-gp (e.g., rifampin). Use of alternative treatments is strongly recommended [see DRUG INTERACTIONS]. | |||||
| Rifampin | 600 mg QD | 5 mg QD | 0.60 | 0.56 | |
| *Multiple dose (steady state) unless otherwise noted # Single dose †AUC = AUC(0 to 24 hours) for single-dose treatments and AUC = AUC(TAU) for multiple-dose treatments QD = once daily BID = twice daily TID = three times daily |
|||||
Table 3: Effect of Linagliptin on Systemic Exposure of Coadministered Drugs
| Coadministered Drug | Dosing of Coadministered Drug* | Dosing of Linagliptin* | Geometric Mean Ratio (ratio with/without coadministered drug) No effect=1.0 |
||
| AUC† | Cmax | ||||
| No dosing adjustments required for the following coadministered drugs: | |||||
| Metformin | 850 mg TID | 10 mg QD | metformin | 1.01 | 0.89 |
| Glyburide | 1.75 mg# | 5 mg QD | glyburide | 0.86 | 0.86 |
| Pioglitazone | 45 mg QD | 10 mg QD | pioglitazone | 0.94 | 0.86 |
| metabolite M-III | 0.98 | 0.96 | |||
| metabolite M-IV | 1.04 | 1.05 | |||
| Digoxin | 0.25 mg QD | 5 mg QD | digoxin | 1.02 | 0.94 |
| Simvastatin | 40 mg QD | 10 mg QD | simvastatin | 1.34 | 1.10 |
| simvastatin acid | 1.33 | 1.21 | |||
| Warfarin | 10 mg# | 5 mg QD | R-warfarin | 0.99 | 1.00 |
| S-warfarin | 1.03 | 1.01 | |||
| INR | 0.93** | 1.04** | |||
| PT | 1.03** | 1.15** | |||
| Ethinylestradiol and | ethinylestradiol 0.03 mg and | 5 mg QD | ethinylestradiol | 1.01 | 1.08 |
| levonorgestrel | levonorgestrel 0.150 mg QD | levonorgestrel | 1.09 | 1.13 | |
| * Multiple dose (steady state) unless otherwise noted # Single dose †AUC = AUC(INF) for single-dose treatments and AUC = AUC(TAU) for multiple-dose treatments **AUC=AUC(0-168) and Cmax=Emax for pharmacodynamic end points INR = International Normalized Ratio PT = Prothrombin Time QD = once daily TID = three times daily |
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TRADJENTA has been studied as monotherapy and in combination with metformin, glimepiride, pioglitazone, and insulin.
A total of 3648 patients with type 2 diabetes were randomized and exposed to linagliptin for at least 12 weeks in 10 double-blind, placebo-controlled clinical efficacy studies evaluating the effects of TRADJENTA on glycemic control. The overall ethnic/racial distribution in these studies was 69% White, 29% Asian, and 2.5% Black, and included 16% Hispanic/Latino patients. Fifty two percent of patients were male. Patients had an overall mean age of 57 years (range 20 to 91 years). In addition, an active (glimepiride)-controlled study of 104 weeks’ duration was conducted in 1551 patients with type 2 diabetes who had inadequate glycemic control on metformin, and a placebo-controlled study of 52 weeks’ duration was conducted in 133 patients with type 2 diabetes and severe chronic renal impairment (eGFR <30 mL/min).
In patients with type 2 diabetes, treatment with TRADJENTA produced clinically significant improvements in hemoglobin A1c (A1C), fasting plasma glucose (FPG), and 2-hour post-prandial glucose (PPG) compared with placebo.
A total of 730 patients with type 2 diabetes participated in 2 double-blind, placebo-controlled studies, one of 18 weeks’ and another of 24 weeks’ duration, to evaluate the efficacy and safety of TRADJENTA monotherapy. In both monotherapy studies, patients currently on an antihyperglycemic agent discontinued the agent and underwent a diet, exercise, and drug washout period of about 6 weeks that included an open-label placebo run-in during the last 2 weeks. Patients with inadequate glycemic control (A1C 7% to 10%) after the washout period were randomized; patients not currently on antihyperglycemic agents (off therapy for at least 8 weeks) with inadequate glycemic control (A1C 7% to 10%) were randomized after completing the 2-week, open-label, placebo run-in period. In the 18-week study, only patients ineligible for metformin were recruited. In the 18-week study, 76 patients were randomized to placebo and 151 to TRADJENTA 5 mg; in the 24-week study, 167 patients were randomized to placebo and 336 to TRADJENTA 5 mg. Patients who failed to meet specific glycemic goals during the 18-week study received rescue therapy with pioglitazone and/or insulin; metformin rescue therapy was used in the 24-week trial.
Treatment with TRADJENTA 5 mg daily provided statistically significant improvements in A1C, FPG, and 2-hour PPG compared with placebo (Table 4). In the 18week study, 12% of patients receiving TRADJENTA 5 mg and 18% who received placebo required rescue therapy. In the 24-week study, 10.2% of patients receiving TRADJENTA 5 mg and 20.9% of patients receiving placebo required rescue therapy. The improvement in A1C compared with placebo was not affected by gender, age, race, prior antihyperglycemic therapy, baseline BMI, or a standard index of insulin resistance (HOMA-IR). As is typical for trials of agents to treat type 2 diabetes, the mean reduction in A1C with TRADJENTA appears to be related to the degree of A1C elevation at baseline. In these 18-and 24-week studies, the changes from baseline in A1C were -0.4% and -0.4%, respectively, for those given TRADJENTA, and 0.1% and 0.3%, respectively, for those given placebo. Change from baseline in body weight did not differ significantly between the groups.
Table 4 Glycemic Parameters in Placebo-Controlled Monotherapy Studies of TRADJENTA*
| 18-Week Study | 24-Week Study | |||
| TRADJENTA 5 mg | Placebo | TRADJENTA 5 mg | Placebo | |
| A1C (%) | ||||
| Number of patients | n = 147 | n = 73 | n = 333 | n = 163 |
| Baseline (mean) | 8.1 | 8.1 | 8.0 | 8.0 |
| Change from baseline (adjusted mean***) | -0.4 | 0.1 | -0.4 | 0.3 |
| Difference from placebo (adjusted mean) (95% CI) | -0.6 (-0.9, -0.3) | - | - 0.7 (-0.9, -0.5) | - |
| FPG (mg/dL) | ||||
| Number of patients | n = 138 | n = 66 | n = 318 | n = 149 |
| Baseline (mean) | 178 | 176 | 164 | 166 |
| Change from baseline (adjusted mean***) | -13 | 7 | -9 | 15 |
| Difference from placebo (adjusted mean) (95% CI) | -21 (-31, -10) | - | - 23 (-30, -16) | - |
| 2- hour PPG (mg/dL) | ||||
| Number of patients | Data not available | Data not available | n = 67 | n = 24 |
| Baseline (mean) | - | - | 258 | 244 |
| Change from baseline (adjusted mean***) | - | - | - 34 | 25 |
| Difference from placebo (adjusted mean) (95% CI) | - | - | - 58 (-82, -34) | - |
| * Full analysis population using last observation on study **18-week study: Placebo, n=68; TRADJENTA, n=136 24-week study: Placebo, n=147; TRADJENTA, n=306 ***18-week study. HbA1c: ANCOVA model included treatment, reason for metformin intolerance and number of prior oral anti-diabetic medicine(s) (OADs) as class-effects, as well as baseline HbA1c as continuous covariates. FPG: ANCOVA model included treatment, reason for metformin intolerance and number of prior OADs as class-effects, as well as baseline HbA1c and baseline FPG as continuous covariates. 24-week study. HbA1c: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c as continuous covariates.FPG: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c and baseline FPG as continuous covariates. PPG: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c and baseline postprandial glucose after two hours as covariate. |
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A total of 701 patients with type 2 diabetes participated in a 24-week, randomized, double-blind, placebo-controlled study designed to assess the efficacy of TRADJENTA in combination with metformin. Patients already on metformin (n = 491) at a dose of at least 1500 mg per day were randomized after completing a 2week, open-label, placebo run-in period. Patients on metformin and another antihyperglycemic agent (n = 207) were randomized after a run-in period of approximately 6 weeks on metformin (at a dose of at least 1500 mg per day) in monotherapy. Patients were randomized to the addition of either TRADJENTA 5 mg or placebo, administered once daily. Patients who failed to meet specific glycemic goals during the studies were treated with glimepiride rescue.
In combination with metformin, TRADJENTA provided statistically significant improvements in A1C, FPG, and 2-hour PPG compared with placebo (Table 5). Rescue glycemic therapy was used in 7.8% of patients treated with TRADJENTA 5 mg and in 18.9% of patients treated with placebo. A similar decrease in body weight was observed for both treatment groups.
Table 5 Glycemic Parameters in Placebo-Controlled Study for TRADJENTA in Combination with Metformin*
| TRADJENTA 5 mg + Metformin | Placebo + Metformin | |
| A1C (%) | ||
| Number of patients | n = 513 | n = 175 |
| Baseline (mean) | 8.1 | 8.0 |
| Change from baseline (adjusted mean***) | -0.5 | 0.15 |
| Difference from placebo + metformin (adjusted mean) (95% CI) | -0.6 (-0.8, -0.5) | - |
| Patients [n (%)] achieving A1C <7%** | 127 (26.2) | 15 (9.2) |
| FPG (mg/dL) | ||
| Number of patients | n = 495 | n = 159 |
| Baseline (mean) | 169 | 164 |
| Change from baseline (adjusted mean***) | -11 | 11 |
| Difference from placebo + metformin (adjusted mean) (95% CI) | -21 (-27, -15) | - |
| 2- hour PPG (mg/dL) | ||
| Number of patients | n = 78 | n = 21 |
| Baseline (mean) | 270 | 274 |
| Change from baseline (adjusted mean***) | -49 | 18 |
| Difference from placebo + metformin (adjusted mean) (95% CI) | -67 (-95, -40) | - |
| *Full analysis population using last observation on study **TRADJENTA 5 mg + Metformin, n=485; Placebo + Metformin, n=163 ***HbA1c: ANCOVA model included treatment and number of prior oral OADs as class-effects, as well as baseline HbA1c as continuous covariates. FPG: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c and baseline FPG as continuous covariates. PPG: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c and baseline postprandial glucose after two hours as covariate. |
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A total of 791 patients with type 2 diabetes mellitus and inadequate glycemic control on diet and exercise participated in the 24-week, randomized, double-blind, portion of this placebo-controlled factorial study designed to assess the efficacy of TRADJENTA as initial therapy with metformin. Patients on an antihyperglycemic agent (52%) underwent a drug washout period of 4 weeks’ duration. After the washout period and after completing a 2-week single-blind placebo run-in period, patients with inadequate glycemic control (A1C ≥7.0% to ≤10.5%) were randomized. Patients with inadequate glycemic control (A1C ≥7.5% to <11.0%) not on antihyperglycemic agents at study entry (48%) immediately entered the 2-week, single-blind, placebo run-in period and then were randomized. Randomization was stratified by baseline A1C (<8.5% vs ≥8.5%) and use of a prior oral antidiabetic drug (none vs monotherapy). Patients were randomized in a 1:2:2:2:2:2 ratio to either placebo or one of 5 active-treatment arms. Approximately equal numbers of patients were randomized to receive initial therapy with 5 mg of TRADJENTA once daily, 500 mg or 1000 mg of metformin twice daily, or 2.5 mg of linagliptin twice daily in combination with 500 mg or 1000 mg of metformin twice daily. Patients who failed to meet specific glycemic goals during the study were treated with sulfonylurea, thiazolidinedione, or insulin rescue therapy.
Initial therapy with the combination of linagliptin and metformin provided significant improvements in A1C and fasting plasma glucose (FPG) compared to placebo, to metformin alone, and to linagliptin alone (Table 6).
The adjusted mean treatment difference in A1C from baseline to week 24 (LOCF) was -0.5% (95% CI -0.7, -0.3; p<0.0001) for linagliptin 2.5 mg/metformin 1000 mg twice daily compared to metformin 1000 twice daily; -1.1% (95% CI -1.4, -0.9; p<0.0001) for linagliptin 2.5 mg/metformin 1000 mg twice daily compared to TRADJENTA 5 mg once daily; -0.6% (95% CI -0.8, -0.4; p<0.0001) for linagliptin 2.5 mg/metformin 500 mg twice daily compared to metformin 500 mg twice daily; and -0.8% (95% CI -1.0, -0.6; p<0.0001) for linagliptin 2.5 mg/metformin 500 mg twice daily compared to TRADJENTA 5 mg once daily.
Lipid effects were generally neutral. No meaningful change in body weight was noted in any of the 6 treatment groups.
Table 6 Glycemic Parameters at Final Visit (24-Week Study) for Linagliptin and Metformin, Alone and in Combination in Randomized Patients with Type 2 Diabetes Mellitus Inadequately Controlled on Diet and Exercise**
| Placebo | TRADJENTA 5 mg Once Daily* | Metformin 500 mg Twice Daily | Linagliptin 2.5 mg Twice Daily* + Metformin 500 mg Twice Daily | Metformin 1000 mg Twice Daily | Linagliptin 2.5 mg Twice Daily* + Metformin 1000 mg Twice Daily | |
| A1C (%) | ||||||
| Number of patients | n=65 | n=135 | n=141 | n=137 | n=138 | n=140 |
| Baseline (mean) | 8.7 | 8.7 | 8.7 | 8.7 | 8.5 | 8.7 |
| Change from baseline (adjusted mean****) | 0.1 | -0.5 | -0.6 | -1.2 | -1.1 | -1.6 |
| Difference from placebo (adjusted mean) (95% CI) | - | - 0.6 (-0.9, -0.3) | -0.8 (-1.0, -0.5) | -1.3 (-1.6, -1.1) | -1.2 (-1.5, -0.9) | -1.7 (-2.0, -1.4) |
| Patients [n (%)] achieving A1C <7%*** | 7 (10.8) | 14 (10.4) | 26 (18.6) | 41 (30.1) | 42 (30.7) | 74 (53.6) |
| Patients (%) receiving rescue medication | 29.2 | 11.1 | 13.5 | 7.3 | 8.0 | 4.3 |
| FPG (mg/dL) | ||||||
| Number of patients | n=61 | n=134 | n=136 | n=135 | n=132 | n=136 |
| Baseline (mean) | 203 | 195 | 191 | 199 | 191 | 196 |
| Change from baseline (adjusted mean****) | 10 | -9 | -16 | -33 | -32 | -49 |
| Difference from placebo (adjusted mean) (95% CI) | - | - 19 (-31, -6) | -26 (-38, -14) | -43 (-56, -31) | -42 (-55, -30) | -60 (-72, -47) |
| *Total daily dose of linagliptin is equal to 5 mg **Full analysis population using last observation on study ***Metformin 500 mg twice daily, n=140; Linagliptin 2.5 mg twice daily + Metformin 500 mg twice daily, n=136; Metformin 1000 mg twice daily, n=137; Linagliptin 2.5 mg twice daily + Metformin 1000 mg twice daily, n=138 ****HbA1c: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c as continuous covariates. FPG: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c and baseline FPG as continuous covariates. |
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The efficacy of TRADJENTA was evaluated in a 104-week, double-blind, glimepiride-controlled, non-inferiority study in patients with type 2 diabetes with insufficient glycemic control despite metformin therapy. Patients being treated with metformin only entered a run-in period of 2 weeks’ duration, whereas patients pretreated with metformin and one additional antihyperglycemic agent entered a run-in treatment period of 6 weeks’ duration with metformin monotherapy (dose of ≥1500 mg/day) and washout of the other agent. After an additional 2-week placebo run-in period, those with inadequate glycemic control (A1C 6.5% to 10%) were randomized 1:1 to the addition of TRADJENTA 5 mg once daily or glimepiride. Randomization was stratified by baseline HbA1c (<8.5% vs ≥8.5%), and the previous use of antidiabetic drugs (metformin alone vs metformin plus one other OAD). Patients receiving glimepiride were given an initial dose of 1 mg/day and then electively titrated over the next 12 weeks to a maximum dose of 4 mg/day as needed to optimize glycemic control. Thereafter, the glimepiride dose was to be kept constant, except for down-titration to prevent hypoglycemia.
After 52 and 104 weeks, TRADJENTA and glimepiride both had reductions from baseline in A1C (52 weeks: -0.4% for TRADJENTA, -0.6% for glimepiride; 104 weeks: -0.2% for TRADJENTA, -0.4% for glimepiride) from a baseline mean of 7.7% (Table 7). The mean difference between groups in A1C change from baseline was 0.2% with 2-sided 97.5% confidence interval (0.1%, 0.3%) for the intent-to-treat population using last observation carried forward. These results were consistent with the completers analysis.
Table 7 Glycemic Parameters at 52 and 104 Weeks in Study Comparing TRADJENTA to Glimepiride as Add-On Therapy in Patients Inadequately Controlled on Metformin**
| Week 52 | Week 104 | |||
| TRADJENTA 5 mg + Metformin | Glimepiride + Metformin (mean Glimepiride dose 3 mg) | TRADJENTA 5 mg + Metformin | Glimepiride + Metformin (mean Glimepiride dose 3 mg) | |
| A1C (%) | ||||
| Number of patients | n = 764 | n = 755 | n = 764 | n=755 |
| Baseline (mean) | 7.7 | 7.7 | 7.7 | 7.7 |
| Change from baseline (adjusted mean***) | -0.4 | -0.6 | -0.2 | -0.4 |
| Difference from glimepiride (adjusted mean) (97.5% CI) | 0.2 (0.1, 0.3) | - | 0.2 (0.1, 0.3) | - |
| FPG (mg/dL) | ||||
| Number of patients | n=733 | n=725 | n=733 | n=725 |
| Baseline (mean) | 164 | 166 | 164 | 166 |
| Change from baseline (adjusted mean***) | -8* | -15 | -2† | -9 |
| Hypoglycemia incidence (%)*** | ||||
| Number of patients | n = 776 | n = 775 | n = 776 | n = 775 |
| Incidence**** | 5.3 * | 31.1 | 7.5 * | 36.1 |
| *p<0.0001 vs glimepiride; †p=0.0012 vs glimepiride **Full analysis population using last observation on study ***Hypoglycemic incidence included both asymptomatic events (not accompanied by typical symptoms and plasma glucose concentration of ≤70 mg/dL) and symptomatic events with typical symptoms of hypoglycemia and plasma glucose concentration of ≤70 mg/dL. ****HbA1c: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c as continuous covariates. FPG: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c and baseline FPG as continuous covariates. Hypoglycemia incidence (%): Cochran-Mantel-Haenszel test was performed on the patient population contained in the treated set, to compare the proportion of patients with hypoglycemic events between patients treated with linagliptin and patients treated with glimepiride. |
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Patients treated with linagliptin had a mean baseline body weight of 86 kg and were observed to have an adjusted mean decrease in body weight of 1.1 kg at 52 weeks and 1.4 kg at 104 weeks. Patients on glimepiride had a mean baseline body weight of 87 kg and were observed to have an adjusted mean increase from baseline in body weight of 1.4 kg at 52 weeks and 1.3 kg at 104 weeks (treatment difference p<0.0001 for both timepoints).
A total of 389 patients with type 2 diabetes participated in a 24-week, randomized, double-blind, placebo-controlled study designed to assess the efficacy of TRADJENTA in combination with pioglitazone. Therapy was stopped in patients on oral antihyperglycemic therapy for a period of 6 weeks (4 weeks followed by a 2week, open-label, placebo run-in period). Drug-naive patients entered directly into the 2-week placebo run-in period. After the run-in period, patients were randomized to receive either TRADJENTA 5 mg or placebo, both in addition to pioglitazone 30 mg daily. Patients who failed to meet specific glycemic goals during the studies were treated with metformin rescue. Glycemic endpoints measured were A1C and FPG.
In initial combination with pioglitazone 30 mg, TRADJENTA 5 mg provided statistically significant improvements in A1C and FPG compared to placebo with pioglitazone (Table 8). Rescue therapy was used in 7.9% of patients treated with TRADJENTA 5 mg/pioglitazone 30 mg and 14.1% of patients treated with placebo/pioglitazone 30 mg. Patient weight increased in both groups during the study with an adjusted mean change from baseline of 2.3 kg and 1.2 kg in the TRADJENTA 5 mg/pioglitazone 30 mg and placebo/pioglitazone 30 mg groups, respectively (p = 0.0141).
Table 8 Glycemic Parameters in Placebo-Controlled Study for TRADJENTA in Combination Therapy with Pioglitazone*
| TRADJENTA 5 mg + Pioglitazone | Placebo + Pioglitazone | |
| A1C (%) | ||
| Number of patients | n = 252 | n = 128 |
| Baseline (mean) | 8.6 | 8.6 |
| Change from baseline (adjusted mean***) | -1.1 | -0.6 |
| Difference from placebo (adjusted mean) (95% CI) | -0.5 (-0.7, -0.3) | - |
| Patients [n (%)] achieving A1C <7%** | 108 (42.9) | 39 (30.5) |
| FPG (mg/dL) | ||
| Number of patients | n = 243 | n = 122 |
| Baseline (mean) | 188 | 186 |
| Change from baseline (adjusted mean***) | -33 | -18 |
| Difference from placebo (adjusted mean) (95% CI) | -14 (-21, -7) | - |
| *Full analysis population using last observation on study **HbA1c: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c as continuous covariates. FPG: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c and baseline FPG as continuous covariates. |
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A total of 245 patients with type 2 diabetes participated in an 18-week, randomized, double-blind, placebo-controlled study designed to assess the efficacy of TRADJENTA in combination with sulfonylurea (SU). Patients on sulfonylurea monotherapy (n = 142) were randomized after completing a 2-week, single-blind, placebo run-in period. Patients on a sulfonylurea plus one additional oral antihyperglycemic agent (n = 103) were randomized after a wash-out period of 4 weeks and a 2-week, single-blind, placebo run-in period. Patients were randomized to the addition of TRADJENTA 5 mg or to placebo, each administered once daily. Patients who failed to meet specific glycemic goals during the studies were treated with metformin rescue. Glycemic endpoints measured included A1C and FPG.
In combination with a sulfonylurea, TRADJENTA provided statistically significant improvements in A1C compared with placebo following 18 weeks’ treatment; the improvements in FPG observed with TRADJENTA were not statistically significant compared with placebo (Table 9). Rescue therapy was used in 7.6% of patients treated with TRADJENTA 5 mg and 15.9% of patients treated with placebo. There was no significant difference between TRADJENTA and placebo in body weight.
Table 9 Glycemic Parameters in Placebo-Controlled Study for TRADJENTA in Combination with Sulfonylurea*
| TRADJENTA 5 mg + SU | Placebo + SU | |
| A1C (%) | ||
| Number of patients | n = 158 | n = 82 |
| Baseline (mean) | 8.6 | 8.6 |
| Change from baseline (adjusted mean***) | -0.5 | -0.1 |
| Difference from placebo (adjusted mean) (95% CI) | -0.5 (-0.7, -0.2) | - |
| Patients [n (%)] achieving A1C <7%** | 23 (14.7) | 3 (3.7) |
| FPG (mg/dL) | ||
| Number of patients | n = 155 | n = 78 |
| Baseline (mean) | 180 | 171 |
| Change from baseline (adjusted mean***) | -8 | -2 |
| Difference from placebo (adjusted mean) (95% CI) | -6 (-17, 4) | - |
| SU = sulfonylurea *Full analysis population using last observation on study **TRADJENTA 5 mg + SU, n=156; Placebo + SU, n=82 ***HbA1c: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c as continuous covariates. FPG: ANCOVA model included treatment and number of prior OADs as class-effects, as well as baseline HbA1c and baseline FPG as continuous covariates |
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A total of 1058 patients with type 2 diabetes participated in a 24-week, randomized, double-blind, placebo-controlled study designed to assess the efficacy of TRADJENTA in combination with a sulfonylurea and metformin. The most common sulfonylureas used by patients in the study were: glimepiride (31%), glibenclamide (26%), and gliclazide (26%, not available in the United States). Patients on a sulfonylurea and metformin were randomized to receive TRADJENTA 5 mg or placebo, each administered once daily. Patients who failed to meet specific glycemic goals during the study were treated with pioglitazone rescue. Glycemic endpoints measured included A1C and FPG.
In combination with a sulfonylurea and metformin, TRADJENTA provided statistically significant improvements in A1C and FPG compared with placebo (Table 10). In the entire study population (patients on TRADJENTA in combination with sulfonylurea and metformin), a mean reduction from baseline relative to placebo in A1C of -0.6% and in FPG of -13 mg/dL was seen. Rescue therapy was used in 5.4% of patients treated with TRADJENTA 5 mg and in 13% of patients treated with placebo. Change from baseline in body weight did not differ significantly between the groups.
Table 10 Glycemic Parameters in Placebo-Controlled Study for TRADJENTA in Combination with Metformin and Sulfonylurea*
| TRADJENTA 5 mg + Metformin + SU | Placebo + Metformin + SU | |
| A1C (%) | ||
| Number of patients | n = 778 | n = 262 |
| Baseline (mean) | 8.2 | 8.1 |
| Change from baseline (adjusted mean***) | -0.7 | -0.1 |
| Difference from placebo (adjusted mean) (95% CI) | -0.6 (-0.7, -0.5) | - |
| Patients [n (%)] achieving A1C <7%** | 217 (29.2) | 20 (8.1) |
| FPG (mg/dL) | ||
| Number of patients | n = 739 | n = 248 |
| Baseline (mean) | 159 | 163 |
| Change from baseline (adjusted mean***) | -5 | 8 |
| Difference from placebo (adjusted mean) (95% CI) | -13 (-18, -7) | - |
| SU= sulfonylurea *Full analysis population using last observation on study **TRADJENTA 5 mg + Metformin + SU, n=742; Placebo + Metformin + SU, n=247 ***HbA1c: ANCOVA model included treatment as class-effects and baseline HbA1c as continuous covariates. FPG: ANCOVA model included treatment as class-effects, as well as baseline HbA1c and baseline FPG as continuous covariates. |
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A total of 1261 patients with type 2 diabetes inadequately controlled on basal insulin alone or basal insulin in combination with oral drugs participated in a randomized, double-blind placebo-controlled trial designed to evaluate the efficacy of TRADJENTA as add-on therapy to basal insulin over 24 weeks. Randomization was stratified by baseline HbA1c (<8.5% vs ≥8.5%), renal function impairment status (based on baseline eGFR), and concomitant use of oral antidiabetic drugs (none, metformin only, pioglitazone only, metformin + pioglitazone). Patients with a baseline A1C of ≥7% and ≤10% were included in the study including 709 patients with renal impairment (eGFR <90 mL/min), most of whom (n=575) were categorized as mild renal impairment (eGFR 60 to <90 mL/min). Patients entered a 2 week placebo run-in period on basal insulin (e.g., insulin glargine, insulin detemir, or NPH insulin) with or without metformin and/or pioglitazone background therapy. Following the run-in period, patients with inadequate glycemic control were randomized to the addition of either 5 mg of TRADJENTA or placebo, administered once daily. Patients were maintained on a stable dose of insulin prior to enrollment, during the run-in period, and during the first 24 weeks of treatment. Patients who failed to meet specific glycemic goals during the double-blind treatment period were rescued by increasing background insulin dose.
TRADJENTA used in combination with insulin (with or without metformin and/or pioglitazone), provided statistically significant improvements in A1C and FPG compared to placebo (Table 11) after 24 weeks of treatment. The mean total daily insulin dose at baseline was 42 units for patients treated with TRADJENTA and 40 units for patients treated with placebo. Background baseline diabetes therapy included use of: insulin alone (16.1%), insulin combined with metformin only (75.5%), insulin combined with metformin and pioglitazone (7.4%), and insulin combined with pioglitazone only (1%). The mean change from baseline to Week 24 in the daily dose of insulin was +1.3 IU in the placebo group and +0.6 IU in the TRADJENTA group. The mean change in body weight from baseline to Week 24 was similar in the two treatment groups. The rate of hypoglycemia, defined as all symptomatic or asymptomatic episodes with a self-measured blood glucose was also similar in both groups (21.4% TRADJENTA; 22.9% placebo) in the first 24 weeks of the study.
Table 11 Glycemic Parameters in Placebo-Controlled Study for TRADJENTA in Combination with Insulin*
| TRADJENTA 5 mg + Insulin | Placebo + Insulin | |
| A1C (%) | ||
| Number of patients | n = 618 | n = 617 |
| Baseline (mean) | 8.3 | 8.3 |
| Change from baseline (adjusted mean***) | -0.6 | 0.1 |
| Difference from placebo (adjusted mean) (95% CI) | -0.7 (-0.7, -0.6) | - |
| Patients [n (%)] achieving A1C <7%** | 116 (19.5) | 48 (8.1) |
| FPG (mg/dL) | ||
| Number of patients | n = 613 | n = 608 |
| Baseline (mean) | 147 | 151 |
| Change from baseline (adjusted mean***) | -8 | 3 |
| Difference from placebo (adjusted mean) (95% CI) | -11 (-16, -6) | - |
| *Full analysis population using last observation carried forward (LOCF) method on study **TRADJENTA + Insulin, n=595; Placebo + Insulin, n=593 ***HbA1c: ANCOVA model included treatment, categorical renal function impairment status and concomitant OADs as class-effects, as well as baseline HbA1c as continuous covariates. FPG: ANCOVA model included treatment, categorical renal function impairment status and concomitant OADs as class-effects, as well as baseline HbA1c and baseline FPG as continuous covariates. |
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The difference between treatment with linagliptin and placebo in terms of adjusted mean change from baseline in HbA1c after 24 weeks was comparable for patients with no renal impairment (eGFR ≥90 mL/min, n=539), with mild renal impairment (eGFR 60 to <90 mL/min, n= 565), or with moderate renal impairment (eGFR 30 to <60 mL/min, n=124).
A total of 133 patients with type 2 diabetes participated in a 52 week, double-blind, randomized, placebo-controlled trial designed to evaluate the efficacy and safety of TRADJENTA in patients with both type 2 diabetes and severe chronic renal impairment. Participants with an estimated (based on the four variables modified diet in renal disease [MDRD] equation) GFR value of <30 mL/min were eligible to participate in the study. Randomization was stratified by baseline HbA1c (≤8% and >8%) and background antidiabetic therapy (insulin or any combination with insulin, SU or glinides as monotherapy and pioglitazone or any other antidiabetics excluding any other DPP-4 inhibitors). For the initial 12 weeks of the study, background antidiabetic therapy was kept stable and included insulin, sulfonylurea, glinides, and pioglitazone. For the remainder of the trial, dose adjustments in antidiabetic background therapy were allowed. At baseline in this trial, 62.5% of patients were receiving insulin alone as background diabetes therapy, and 12.5% were receiving sulfonylurea alone.
After 12 weeks of treatment, TRADJENTA 5 mg provided statistically significant improvement in A1C compared to placebo, with an adjusted mean change of -0.6% compared to placebo (95% confidence interval -0.9, -0.3) based on the analysis using last observation carried forward (LOCF). With adjustments in antidiabetic background therapy after the initial 12 weeks, efficacy was maintained for 52 weeks, with an adjusted mean change from baseline in A1C of -0.7% compared to placebo (95% confidence interval -1.0, -0.4) based on analysis using LOCF.
TRADJENTA®
(TRAD gen ta)
(linagliptin) Tablets
Read this Medication Guide carefully before you start taking TRADJENTA and each time you get a refill. There may be new information. This information does not take the place of talking to your doctor about your medical condition or your treatment. If you have any questions about TRADJENTA, ask your doctor or pharmacist.
What is the most important information I should know about TRADJENTA?
Serious side effects can happen to people taking TRADJENTA, including:
Before you start taking TRADJENTA, tell your doctor if you have ever had:
Stop taking TRADJENTA and call your doctor right away if you have pain in your stomach area (abdomen) that is severe and will not go away. The pain may be felt going from your abdomen through to your back. The pain may happen with or without vomiting. These may be symptoms of pancreatitis.
These may be symptoms of heart failure.
What is TRADJENTA?
It is not known if TRADJENTA is safe and effective in children under 18 years of age.
Who should not take TRADJENTA?
Do not take TRADJENTA if you:
Symptoms of a serious allergic reaction to TRADJENTA may include:
If you have any of these symptoms, stop taking TRADJENTA and contact your doctor or go to the nearest hospital emergency room right away.
What should I tell my doctor before using TRADJENTA?
Before you take TRADJENTA, tell your doctor if you:
Tell your doctor about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
TRADJENTA may affect the way other medicines work, and other medicines may affect how TRADJENTA works.
Especially tell your doctor if you take
Know the medicines you take. Keep a list of them and show it to your doctor and pharmacist when you get a new medicine.
How should I take TRADJENTA?
What are the possible side effects of TRADJENTA?
TRADJENTA may cause serious side effects, including:
If you have these symptoms, stop taking TRADJENTA and call your doctor or go to the nearest hospital emergency room right away.
The most common side effects of TRADJENTA include stuffy or runny nose and sore throat, cough, and diarrhea These are not all the possible side effects of TRADJENTA. For more information, ask your doctor or pharmacist. Tell your doctor if you have any side effect that bothers you or that does not go away.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
How should I store TRADJENTA?
Keep TRADJENTA and all medicines out of the reach of children.
General information about the safe and effective use of TRADJENTA.
Medicines are sometimes prescribed for purposes other than those listed in Medication Guides. Do not use TRADJENTA for a condition for which it was not prescribed. Do not give TRADJENTA to other people, even if they have the same symptoms you have. It may harm them. This Medication Guide summarizes the most important information about TRADJENTA. If you would like more information, talk with your doctor. You can ask your pharmacist or doctor for information about TRADJENTA that is written for health professionals. For more information, go to www.TRADJENTA.com (or scan the code below to go to www.TRADJENTA.com) or call Boehringer Ingelheim Pharmaceuticals, Inc. at 1-800-542-6257, or (TTY) 1-800-459-9906.
What are the ingredients in TRADJENTA?
Active Ingredient: linagliptin
Inactive Ingredients: mannitol, pregelatinized starch, corn starch, copovidone, and magnesium stearate. The film coating contains the following inactive ingredients: hypromellose, titanium dioxide, talc, polyethylene glycol, and red ferric oxide.
What is type 2 diabetes?
Type 2 diabetes is a condition in which your body does not make enough insulin, and/or the insulin that your body produces does not work as well as it should. Your body can also make too much sugar. When this happens, sugar (glucose) builds up in the blood. This can lead to serious medical problems.
The main goal of treating diabetes is to lower your blood sugar to a normal level. High blood sugar can be lowered by diet and exercise, and by certain medicines when necessary.
Talk to your doctor about how to prevent, recognize, and take care of low blood sugar (hypoglycemia), high blood sugar (hyperglycemia), and other problems you have because of your diabetes.
This Medication Guide has been approved by the U. S. Food and Drug Administration.
