Warnings for Tryvio
Included as part of the "PRECAUTIONS" Section
Precautions for Tryvio
Embryo-Fetal Toxicity
Based on data from animal reproduction studies with endothelin receptor antagonists (ERAs), TRYVIO may cause fetal harm when administered during pregnancy and is contraindicated for use in patients who are pregnant. The available human data for endothelin receptor antagonists do not establish the presence or absence of fetal harm related to the use of TRYVIO. Counsel patients who can become pregnant about the potential risk to a fetus. Obtain a pregnancy test prior to initiation of treatment with TRYVIO. Advise patients who can become pregnant to use effective contraception prior to initiation of treatment with TRYVIO, during treatment, and for one month after the final dose of TRYVIO. When pregnancy is detected, discontinue TRYVIO as soon as possible [see DOSAGE AND ADMINISTRATION and CONTRAINDICATIONS and Use In Specific Populations].
Hepatotoxicity
Elevations of aminotransferases and hepatotoxicity are known effects of ERAs, including TRYVIO. Elevations in alanine transaminase (ALT) or aspartate aminotransferase (AST) of greater than 5-fold upper limit of normal (ULN) were observed rarely in patients treated with aprocitentan in the clinical trial, including cases with positive rechallenge. There were no reports of patients with ALT and/or AST >3 × ULN and total bilirubin >2 × ULN or cases of liver failure observed in TRYVIO-treated patients in the clinical trials. To reduce the risk of potential serious hepatotoxicity, measure serum aminotransferase levels and total bilirubin prior to initiation of treatment and repeat during treatment periodically and as clinically indicated.
Do not initiate TRYVIO in patients with elevated aminotransferases (>3 × ULN) or moderate to severe hepatic impairment.
Advise patients with symptoms suggesting hepatotoxicity (nausea, vomiting, right upper quadrant pain, fatigue, anorexia, scleral icterus, jaundice, dark urine, fever, or itching) to immediately stop treatment with TRYVIO and seek medical attention.
If sustained, unexplained, clinically relevant aminotransferase elevations occur, or if elevations are accompanied by an increase in bilirubin >2 × ULN, or if clinical symptoms of hepatotoxicity occur, discontinue TRYVIO.
Fluid Retention
Fluid retention and peripheral edema are known effects of ERAs, including TRYVIO [see ADVERSE REACTIONS]. Edema/fluid retention was reported in 9% of TRYVIO-treated patients compared with 18% of patients receiving aprocitentan 25 mg (twice the recommended dose) and 2% on placebo in the clinical trial, requiring additional diuretic use in some patients. Older age and chronic kidney disease are risk factors for edema/fluid retention with TRYVIO. TRYVIO has not been studied in patients with heart failure New York Heart Association stage III–IV, unstable cardiac function, or with NTproBNP ≥500 pg/mL. TRYVIO is not recommended in these patients.
Monitor for signs and symptoms of fluid retention, weight gain, and worsening heart failure. If clinically significant fluid retention develops, treat appropriately, and consider discontinuation of TRYVIO.
Hemoglobin Decrease
Decreases in hemoglobin concentration and hematocrit have occurred following administration of other ERAs and were observed in the clinical trial with TRYVIO. Hemoglobin decreases usually presented early, stabilized thereafter, and were reversible after discontinuation. A decrease in hemoglobin of >2 g/dL from baseline was observed in 7% of patients compared to 1% of placebo patients. A decrease to below 10.0 g/dL was observed in 3% of TRYVIO-treated patients compared to 0 patients taking placebo. Initiation of TRYVIO is not recommended in patients with severe anemia. Measure hemoglobin prior to initiation of treatment and periodically during treatment as clinically indicated [see ADVERSE REACTIONS].
Decreased Sperm Counts
TRYVIO, like other ERAs, may have an adverse effect on spermatogenesis. Counsel men about potential effects on fertility [see Use In Specific Populations and Nonclinical Toxicology].
Patient Counseling Information
Advise the patient to read the FDA-approved patient labeling (Medication Guide).
Embryo-Fetal Toxicity
Counsel patients who can become pregnant to use effective methods of contraception before treatment with TRYVIO, during treatment with TRYVIO, and for one month after treatment discontinuation. Patients who can become pregnant should have a negative pregnancy test prior to initiation of TRYVIO, [see WARNINGS AND PRECAUTIONS and Use In Specific Populations].
Patients should be instructed to contact their healthcare provider if they suspect they may be pregnant. Patients should seek additional contraceptive advice from a gynecologist or similar expert as needed.
Educate and counsel patients who can become pregnant on the use of emergency contraception in the event of unprotected sex or contraceptive failure.
Advise pre-pubertal females and/or their guardian(s) to report any changes in their reproductive status immediately to their prescriber.
Lactation
Advise females not to breastfeed during treatment with TRYVIO [see Use In Specific Populations ].
Hepatotoxicity
Educate patients on signs of hepatotoxicity. Advise patients that they should contact their healthcare provider if they have unexplained nausea, vomiting, right upper quadrant pain, fatigue, anorexia, jaundice, dark urine, fever, or itching.
Fluid Retention
Educate patients on signs of fluid retention. Advise patients that they should contact their healthcare provider if they have unusual weight increase or swelling of the ankles or legs.
Nonclinical Toxicology
Carcinogenesis, Mutagenesis, Impairment Of Fertility
Carcinogenesis
Two-year carcinogenicity studies with macitentan (for which aprocitentan is a major metabolite) did not identify any carcinogenic potential at doses up to 100 mg/kg/day and 250 mg/kg/day in mice and rats, which produced aprocitentan exposures approximately 30-fold and 11-fold, respectively, the clinical aprocitentan exposure at the MRHD based on AUC.
Mutagenesis
Aprocitentan did not induce mutagenicity or genotoxicity in a standard battery of in vitro and in vivo assays that included a bacterial reverse mutation assay, a chromosome aberration test in human lymphocytes, and an in vivo bone marrow micronucleus test in rats.
Impairment Of Fertility
In a fertility study in male rats given aprocitentan for 15 weeks at doses up to 250 mg/kg/day, no effect on fertility or spermatogenesis was observed at 52-fold the clinical exposure at the MRHD based on AUC. In repeated dose toxicity studies, treatment with aprocitentan resulted in testicular tubular degeneration/atrophy in male rats and dogs at high doses of 250 mg/kg/day and 25 mg/kg/day, respectively, which represents approximately 41- and 52-fold the clinical exposure at the MRHD, based on AUC, respectively. The testicular toxicity was not evident in male rats and dogs at 50 mg/kg/day and 5 mg/kg/day, respectively, which represents approximately 14- and 10-fold the clinical exposure at the MRHD based on AUC.
In female rats given aprocitentan prior to mating, minimally increased pre-implantation loss was observed at doses ≥50 mg/kg/day, which represent ≥23-fold the clinical exposure at the MRHD based on AUC. No impact on fertility was observed at 10 mg/kg/day, which represents 5-fold the clinical exposure at the MRHD based on AUC.
Use In Specific Populations
Pregnancy
Risk Summary
Based on animal reproduction studies with other ERAs, TRYVIO can cause embryo-fetal toxicity, including birth defects and fetal death when administered to a pregnant patient and is contraindicated during pregnancy [see CONTRAINDICATIONS]. Available data from post-marketing reports and published literature over decades of use with endothelin receptor antagonists in the same class as TRYVIO have not identified an increased risk of fetal harm; however, these data are limited. Methodological limitations of these postmarketing reports and published literature include lack of a control group; limited information regarding dose, duration, and timing of drug exposure; and missing data. These limitations preclude establishing a reliable estimate of the risk of adverse fetal and neonatal outcomes with maternal endothelin receptor antagonist use. Administration of macitentan, where approximately ≥50% of total exposure was to aprocitentan, was teratogenic in rats and rabbits at all doses tested (see Data). Available data from reports of pregnancy in clinical trials with TRYVIO are insufficient to rule out a drug-associated risk of major birth defects, miscarriage or other adverse maternal or fetal outcomes. Advise pregnant patients of the potential risk to a fetus.
The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. 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.
Data
Animal Data
In embryo-fetal development toxicity studies in pregnant rats and rabbits given macitentan (for which aprocitentan is a major metabolite) during the period of major organogenesis, cardiovascular and mandibular arch fusion malformations were observed at all doses studied. The lowest doses in rats and rabbits produced aprocitentan exposures that were equivalent to and 15-fold, respectively, the clinical exposures at the maximum recommended human dose (MRHD) based on area under the curve (AUC).
In pre- and post-natal development studies, female rats given macitentan (for which aprocitentan is a major metabolite) from late pregnancy through lactation showed reduced pup survival and impairment of the male fertility of the offspring at all doses. The lowest dose produced aprocitentan exposures approximately 2-fold the clinical exposures at the MRHD based on AUC.
Lactation
Risk Summary
There are no data on the presence of aprocitentan in human milk, the effects on the breastfed infant, or the effect on milk production. In rats, aprocitentan was excreted into milk during lactation (see Data). When a drug is present in animal milk, it is likely that the drug will be present in human milk. Because of the potential for serious adverse reactions in breastfed infants, advise women not to breastfeed during treatment with TRYVIO.
Data
A single 14C-radiolabeled macitentan dose of 3 mg/kg was given orally to lactating Wistar rats. Aprocitentan was consistently observed in milk samples across all collection times after oral administration.
Females And Males Of Reproductive Potential
Based on data from animal reproductive toxicity studies with other ERAs, TRYVIO can cause fetal harm, including birth defects and fetal death, when administered to a pregnant patient and is contraindicated during pregnancy [see CONTRAINDICATIONS and Pregnancy].
Pregnancy Testing
Verify that patients who can become pregnant, are not pregnant prior to initiating TRYVIO. The patient should contact their physician immediately if onset of menses is delayed or pregnancy is suspected. If the pregnancy test is positive, the physician and patient should discuss the risks to the patient, the pregnancy, and the fetus [see WARNINGS AND PRECAUTIONS, DOSAGE AND ADMINISTRATION and CONTRAINDICATIONS].
Contraception
Patients using TRYVIO who can become pregnant should use effective contraception prior to initiation of treatment, during treatment, and for one month after discontinuation of treatment with TRYVIO to prevent pregnancy [see WARNINGS AND PRECAUTIONS].
Infertility
Other ERAs have shown an adverse effect on spermatogenesis in humans and/or animals. TRYVIO, like other ERAs, may impair fertility in males of reproductive potential. It is not known whether effects on fertility would be reversible [see WARNINGS AND PRECAUTIONS and Nonclinical Toxicology].
Pediatric Use
The safety and efficacy of TRYVIO in pediatric patients have not been established.
Geriatric Use
Of the total number of subjects in the PRECISION study of TRYVIO, 321 (44%) were 65 years and older, while 72 (10%) were 75 years and older. Edema/fluid retention was more common in these patients than younger patients [see WARNINGS AND PRECAUTIONS].
No dose adjustment is required in patients over the age of 65 years [see CLINICAL PHARMACOLOGY].
Renal Impairment
TRYVIO is not recommended in patients with kidney failure (eGFR <15 mL/min) or on dialysis. The effect of kidney failure (eGFR <15 mL/min) or dialysis on aprocitentan pharmacokinetics is unknown [see CLINICAL PHARMACOLOGY]. Patients with renal impairment are at increased risk of edema/fluid retention [see WARNINGS AND PRECAUTIONS].
No dose adjustment is required in patients with mild to severe renal impairment (eGFR ≥15 mL/min).
Hepatic Impairment
TRYVIO is not recommended in patients with moderate and severe hepatic impairment (Child-Pugh class B and C) because these patients may be at increased risk for poor outcomes from hepatotoxicity.
No dose adjustment is required in patients with mild hepatic impairment (Child-Pugh class A) [see CLINICAL PHARMACOLOGY].