Warnings for Sancuso
Included as part of the "PRECAUTIONS" Section
Precautions for Sancuso
Progressive Ileus And Gastric Distention
SANCUSO may mask a progressive ileus and/or gastric distention. This should be particularly considered before use of SANCUSO in patients who have had recent abdominal surgery. Monitor for decreased bowel activity, particularly in patients with risk factors for gastrointestinal obstruction.
Serotonin Syndrome
The development of serotonin syndrome has been reported with 5-HT3 receptor antagonists. Most reports have been associated with concomitant use of serotonergic drugs (e.g., selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), monoamine oxidase inhibitors, mirtazapine, fentanyl, lithium, tramadol, and intravenous methylene blue). Some of the reported cases were fatal. Serotonin syndrome occurring with overdose of another 5-HT3 receptor antagonist alone has also been reported. The majority of reports of serotonin syndrome related to 5-HT3 receptor antagonist use occurred in a post-anesthesia care unit or an infusion center.
Symptoms associated with serotonin syndrome may include the following combination of signs and symptoms: mental status changes (e.g., agitation, hallucinations, delirium, and coma), autonomic instability (e.g., tachycardia, labile blood pressure, dizziness, diaphoresis, flushing, hyperthermia), neuromuscular symptoms (e.g., tremor, rigidity, myoclonus, hyperreflexia, incoordination), seizures, with or without gastrointestinal symptoms (e.g., nausea, vomiting, diarrhea). Patients should be monitored for the emergence of serotonin syndrome, especially with concomitant use of SANCUSO and other serotonergic drugs. If symptoms of serotonin syndrome occur, discontinue SANCUSO and initiate supportive treatment. Patients should be informed of the increased risk of serotonin syndrome, especially if SANCUSO is used concomitantly with other serotonergic drugs. [see DRUG INTERACTIONS].
Skin Reactions
In clinical trials with SANCUSO, application site reactions were reported that were generally mild in intensity and did not lead to discontinuation of use. The incidence of reactions was comparable with placebo.
If severe reactions, or a generalized skin reaction occur (e.g., allergic rash, including erythematous, macular, papular rash or pruritus), remove the SANCUSO transdermal system.
Increased Drug Exposure With Use Of External Heat Sources
Prolonged exposure to heat results in increasing plasma concentrations of granisetron during the period of heat exposure [see CLINICAL PHARMACOLOGY]. Do not apply a heat pad or heat lamp over or in the vicinity of the SANCUSO transdermal system and avoid extended exposure to heat [see DOSAGE AND ADMINISTRATION].
Phototoxicity With Ultraviolet Light Exposure
Granisetron may be affected by direct natural or artificial sunlight, including sunlamps. An in vitro study using Chinese hamster ovary cells suggests that granisetron has the potential for photogenotoxicity [see Nonclinical Toxicology]. To avoid a potential skin reaction, advise patients to cover the application site of the transdermal system with clothing if there is a risk of exposure to direct natural or artificial sunlight throughout the period of wear and for 10 days following its removal.
Patient Counseling Information
Advise the patient to read the FDA-approved patient labeling (PATIENT INFORMATION).
Progressive Ileus And Gastric Distention
Advise the patient to report new or worsening constipation to their healthcare provider and seek immediate medical care if symptoms of an ileus (pain or swelling in their abdomen) occur [see WARNINGS AND PRECAUTIONS].
Serotonin Syndrome
Advise the patient of the possibility of serotonin syndrome with concomitant use of SANCUSO and another serotonergic agent such as medications to treat depression and migraines. Advise the patient to seek immediate medical attention if the following symptoms occur: changes in mental status, autonomic instability, neuromuscular symptoms, with or without gastrointestinal symptoms [see WARNINGS AND PRECAUTIONS].
Skin Reactions
Instruct the patient remove the transdermal system if they have a severe skin reaction, or a generalized skin reaction (e.g., allergic rash, including erythematous, macular, papular rash or pruritus) [see WARNINGS AND PRECAUTIONS].
Increased Drug Exposure With Use Of External Heat Sources
Advise the patient to avoid prolonged exposure to heat and not to apply a heat pad or heat lamp over or near the SANCUSO transdermal system and avoid extended exposure to heat [see WARNINGS AND PRECAUTIONS].
Phototoxicity With Ultraviolet Light Exposure
Advise the patient to avoid direct sunlight or exposure to sunlamps and to cover the application site of the transdermal system with clothing, if there is a risk of exposure to sunlight or sunlamps throughout the period of wear and for 10 days following its removal [see WARNINGS AND PRECAUTIONS].
Application And Removal Instructions
Instruct the patient on how to apply and remove the transdermal system:
- Only wear one transdermal system at any time.
- Do not cut the transdermal system.
- Apply the transdermal system to clean, dry, nearly hairless, intact healthy skin on the upper outer arm.
- After the transdermal system is applied, wash hands thoroughly.
- Remove the transdermal system by peeling off gently from the skin.
- Upon removal, fold the used transdermal system in half with the sticky side together, and discard in household trash in a manner that prevents accidental contact or ingestion by children, pets or others.
- SANCUSO contains granisetron. Do not use other granisetron-containing products with SANCUSO [see DOSAGE AND ADMINISTRATION].
Nonclinical Toxicology
Carcinogenesis, Mutagenesis, Impairment Of Fertility
In a 24-month carcinogenicity study, rats were treated orally with granisetron 1, 5 or 50 mg/kg/day (6, 30 or 300 mg/m2/day). The 50 mg/kg/day dose was reduced to 25 mg/kg/day (150 mg/m2/day) during week 59 due to toxicity. For a 50 kg person of average height (1.46 m2 body surface area), these doses represent about 2.6, 13, and 65 times the recommended clinical dose (3.1 mg/day, 2.3 mg/m2/day, delivered by the SANCUSO transdermal system, on a body surface area basis). There was a statistically significant increase in the incidence of hepatocellular carcinomas and adenomas in males treated with 5 mg/kg/day (30 mg/m2/day, about 13 times the recommended human dose with SANCUSO, on a body surface area basis) and above, and in females treated with 25 mg/kg/day (150 mg/m2/day, about 65 times the recommended human dose with SANCUSO, on a body surface area basis). No increase in liver tumors was observed at a dose of 1 mg/kg/day (6 mg/m2/day, about 2.6 times the recommended human dose with SANCUSO, on a body surface area basis) in males and 5 mg/kg/day (30 mg/m2/day, about 13 times the recommended human dose with SANCUSO, on a body surface area basis) in females.
In a 12-month oral toxicity study, treatment with granisetron 100 mg/kg/day (600 mg/m2/day, about 261 times the recommended human dose with SANCUSO, on a body surface area basis) produced hepatocellular adenomas in male and female rats while no such tumors were found in the control rats. A 24-month mouse carcinogenicity study of granisetron did not show a statistically significant increase in tumor incidence, but the study was not conclusive. Because of the tumor findings in rat studies, SANCUSO should be prescribed only at the dose and for the indication recommended [see INDICATIONS, DOSAGE AND ADMINISTRATION].
Granisetron was not mutagenic in an in vitro Ames test and mouse lymphoma cell forward mutation assay, and in vivo mouse micronucleus test and in vitro and ex vivo rat hepatocyte UDS assays. It, however, produced a significant increase in UDS in HeLa cells in vitro and a significant increased incidence of cells with polyploidy in an in vitro human lymphocyte chromosomal aberration test.
Granisetron at subcutaneous doses up to 6 mg/kg/day (36 mg/m2/day, about 16 times the recommended human dose of SANCUSO, on a body surface area basis), and oral doses up to 100 mg/kg/day (600 mg/m2/day, about 261 times the recommended human dose of SANCUSO, on a body surface area basis) was found to have no effect on fertility and reproductive performance of male and female rats.
Phototoxicity
When tested for potential photogenotoxicity in vitro in a Chinese hamster ovary (CHO) cell line, at 200 and 300 mcg/mL, granisetron increased the percentage of cells with chromosomal aberration following photoirradiation [see WARNINGS AND PRECAUTIONS].
Granisetron was not phototoxic when tested in vitro in a mouse fibroblast cell line. When tested in vivo in guinea-pigs, SANCUSO transdermal system did not show any potential for photoirritation or photosensitivity. No phototoxicity studies have been performed in humans.
Use In Specific Populations
Pregnancy
Risk Summary
Available published data and postmarketing reports with granisetron use in pregnant women have not identified a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes. In a published ex vivo human placental perfusion model, no transplacental passage of granisetron was detected at a concentration (5 ng/mL) that mimics the plasma concentration achieved following transdermal application of SANCUSO. In animal reproduction studies, no adverse developmental effects were observed in pregnant rats and rabbits administered granisetron hydrochloride during organogenesis at intravenous doses up to 24 times and 16 times, respectively, the maximum recommended human dose delivered by the SANCUSO transdermal system, based on body surface area (see Data).
The estimated 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 risks of major birth defects and miscarriage in clinically recognized pregnancies are 2-4% and 15-20%, respectively.
In animal reproduction studies, no adverse developmental effects were observed in pregnant rats and rabbits administered granisetron hydrochloride at intravenous doses up to 24 times and 16 times, respectively, the maximum recommended human dose delivered by the SANCUSO transdermal system, based on body surface area (see Data).
Data
Animal Data
Reproduction studies with granisetron hydrochloride have been performed in pregnant rats at intravenous doses up to 9 mg/kg/day (54 mg/m2/day, about 24 times the recommended human dose delivered by the SANCUSO transdermal system, based on body surface area) and oral doses up to 125 mg/kg/day (750 mg/m2/day, about 326 times the recommended human dose with SANCUSO based on body surface area). Reproduction studies have been performed in pregnant rabbits at intravenous doses up to 3 mg/kg/day (36 mg/m2/day, about 16 times the human dose with SANCUSO based on body surface area) and at oral doses up to 32 mg/kg/day (384 mg/m2/day, about 167 times the human dose with SANCUSO based on body surface area). These studies did not reveal any harm to the fetus due to granisetron.
Lactation
Risk Summary
There are no data on the presence of granisetron in human milk, the effects on the breastfed child, or the effects on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for SANCUSO and any potential adverse effects on the breastfed child from SANCUSO or from the underlying maternal condition.
Pediatric Use
Safety and effectiveness of SANCUSO have not been established in pediatric patients.
Geriatric Use
Clinical studies of SANCUSO did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, cautious treatment selection for an elderly patient is prudent because of the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.
Renal Impairment Or Hepatic Impairment
Although no studies have been performed to investigate the pharmacokinetics of SANCUSO in patients with renal or hepatic impairment, pharmacokinetic information is available for intravenous granisetron [see CLINICAL PHARMACOLOGY]. No dosage adjustment is recommended for renal or hepatic impairment.