Important Safety Information, including Boxed WARNING:
WARNING: HEPATOTOXICITY Severe and fatal hepatotoxicity has been observed in clinical trials. Monitor hepatic function and interrupt, reduce, or discontinue dosing as recommended. See "Warnings+
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Indications

VOTRIENT® (pazopanib) tablets is indicated for the treatment of patients with advanced renal cell carcinoma (RCC).

VOTRIENT® (pazopanib) tablets is indicated for the treatment of patients with advanced soft tissue sarcoma (STS) who have received prior chemotherapy. Limitation of Use: The efficacy of VOTRIENT for the treatment of patients with adipocytic STS or gastrointestinal stromal tumors has not been demonstrated.

Important Safety Information for VOTRIENT® (pazopanib) tablets

WARNING: HEPATOTOXICITY

Severe and fatal hepatotoxicity has been observed in clinical trials. Monitor hepatic function and interrupt, reduce, or discontinue dosing as recommended. See “Warnings and Precautions,” Section 5.1, in complete Prescribing Information.

Hepatic Toxicity and Hepatic Impairment: Severe and fatal hepatotoxicity has occurred. Patients older than 65 years are at an increased risk. Increases in serum transaminase levels (ALT, AST) and bilirubin were observed. Transaminase elevations occur early in the course of treatment (92.5% of all transaminase elevations of any grade occurred in the first 18 weeks). In patients with preexisting moderate hepatic impairment, the starting dose of VOTRIENT should be reduced to 200 mg per day or alternatives to VOTRIENT should be considered. Treatment with VOTRIENT is not recommended in patients with severe hepatic impairment. Concomitant use of VOTRIENT and simvastatin increases the risk of ALT elevations and should be undertaken with caution [see Drug Interactions]. Before the initiation of treatment and regularly during treatment, monitor hepatic function and interrupt, reduce, or discontinue dosing as recommended.

QT Prolongation and Torsades de Pointes: Prolonged QT intervals and arrhythmias, including torsades de pointes, have occurred. Use with caution in patients with a history of QT interval prolongation, patients taking antiarrhythmics or other medications that may prolong QT interval, and those with relevant preexisting cardiac disease. Baseline and periodic monitoring of electrocardiograms and maintenance of electrolytes (eg, calcium, magnesium, and potassium) within the normal range should be performed.

Cardiac Dysfunction: Cardiac dysfunction, such as congestive heart failure (CHF) and decreased left ventricular ejection fraction (LVEF), has occurred. In the overall safety population for RCC (N=586), cardiac dysfunction was observed in 0.6% (4/586) of patients without routine on-study LVEF monitoring. In a randomized RCC trial of VOTRIENT compared with sunitinib, in patients who had baseline and follow-up LVEF measurements, myocardial dysfunction occurred in 13% (47/362) of patients on VOTRIENT compared with 11% (42/369) of patients on sunitinib. CHF occurred in 0.5% of patients on each arm. In the randomized STS trial, myocardial dysfunction occurred in 11% (16/142) of patients on VOTRIENT compared to 5% (2/40) of patients on placebo. One percent (3/240) of patients on VOTRIENT had CHF, which did not resolve in 1 patient. Monitor blood pressure (BP), and manage promptly using a combination of antihypertensive therapy and dose modification of VOTRIENT (interruption and reinitiation at a reduced dose based on clinical judgment). Carefully monitor patients for clinical signs or symptoms of CHF. Baseline and periodic evaluation of LVEF is recommended in patients at risk of cardiac dysfunction, including previous anthracycline exposure.

Hemorrhagic Events: Hemorrhagic events have occurred and can be fatal. Fatal hemorrhage occurred in 0.9% (5/586) of patients in the RCC trials; there were no reports of fatal hemorrhage in the STS trials. In the randomized RCC trial, 13% (37/290) of patients treated with VOTRIENT compared to 5% (7/145) of patients on placebo experienced at least 1 hemorrhagic event. The most common hemorrhagic events were hematuria (4%), epistaxis (2%), hemoptysis (2%), and rectal hemorrhage (1%). In the randomized STS trial, 22% (53/240) of patients treated with VOTRIENT compared to 8% (10/123) treated with placebo experienced at least 1 hemorrhagic event. The most common hemorrhagic events were epistaxis (8%), mouth hemorrhage (3%), and anal hemorrhage (2%). VOTRIENT should not be used in patients who have a history of hemoptysis, cerebral, or clinically significant gastrointestinal (GI) hemorrhage in the past 6 months.

Arterial Thromboembolic Events: Arterial thromboembolic events have occurred and can be fatal. Fatal events were observed in 0.3% (2/586) of patients in the RCC trials and in no patients in the STS trials. In the randomized RCC trial, 2% (5/290) of patients receiving VOTRIENT experienced myocardial infarction or ischemia, 0.3% (1/290) had a cerebrovascular accident, and 1% (4/290) had an event of transient ischemic attack. In the randomized STS trial, 2% (4/240) of patients receiving VOTRIENT experienced myocardial infarction or ischemia, 0.4% (1/240) had a cerebrovascular accident, and there were no incidents of transient ischemic attack. No arterial thromboembolic events were reported in patients who received placebo in either trial. Use with caution in patients who are at increased risk for these events or have had a history of these events. Do not use in patients who have had an arterial thromboembolic event in the past 6 months.

Venous Thromboembolic Events (VTEs): VTEs have occurred, including venous thrombosis and fatal pulmonary emboli. In the randomized RCC trial, VTEs were reported in 1% of patients treated with VOTRIENT and in 1% of patients treated with placebo. In the randomized STS trial, VTEs were reported in 5% of patients treated with VOTRIENT compared to 2% with placebo. Fatal pulmonary embolus occurred in 1% (2/240) of STS patients receiving VOTRIENT and in no patients receiving placebo. Monitor for signs and symptoms.

Thrombotic Microangiopathy (TMA): TMA, including thrombotic thrombocytopenic purpura (TTP) and hemolytic uremic syndrome (HUS) has been reported in clinical trials of VOTRIENT as monotherapy, in combination with bevacizumab, and in combination with topotecan. VOTRIENT is not indicated for use in combination with other agents. Six of the 7 TMA cases occurred within 90 days of the initiation of VOTRIENT. Improvement of TMA was observed after treatment was discontinued. Monitor for signs and symptoms of TMA. Permanently discontinue VOTRIENT in patients developing TMA. Manage as clinically indicated.

GI Perforation and Fistula: In the RCC and STS trials, GI perforation or fistula occurred in 0.9% (5/586) of patients and 1% (4/382) of patients receiving VOTRIENT, respectively. Fatal perforations occurred in 0.3% (2/586) of these patients in the RCC trials and in 0.3% (1/382) of these patients in the STS trials. Use with caution in patients at risk for these events, and monitor for signs and symptoms.

Interstitial Lung Disease (ILD)/Pneumonitis: ILD/pneumonitis, which can be fatal, has been reported in 0.1% of patients in the clinical trials treated with VOTRIENT. Monitor patients for ILD/pneumonitis and discontinue VOTRIENT if symptoms of ILD or pneumonitis develop.

Reversible Posterior Leukoencephalopathy Syndrome (RPLS): RPLS has been reported and may be fatal. Permanently discontinue VOTRIENT in patients developing RPLS.

Hypertension (HTN): HTN, including hypertensive crisis, has occurred in clinical trials. HTN occurs early in the course of treatment (approximately 40% of cases occurred by Day 9, and 90% of cases occurred in the first 18 weeks). BP should be well controlled prior to initiating VOTRIENT, monitored early after starting treatment (no longer than 1 week), and frequently thereafter. Treat increased BP promptly with standard antihypertensive therapy and dose reduction or interruption of VOTRIENT, as clinically warranted. Discontinue VOTRIENT if there is evidence of hypertensive crisis or if HTN is severe and persistent despite antihypertensive therapy and dose reduction of VOTRIENT. Approximately 1% of patients required permanent discontinuation of VOTRIENT because of HTN.

Wound Healing: VOTRIENT may impair wound healing. Interruption of therapy is recommended in patients undergoing surgical procedures; treatment with VOTRIENT should be stopped at least 7 days prior to scheduled surgery. VOTRIENT should be discontinued in patients with wound dehiscence.

Hypothyroidism: Hypothyroidism was reported in 7% (19/290) of patients treated with VOTRIENT in the randomized RCC trial and in 5% (11/240) of patients treated with VOTRIENT in the randomized STS trial. No patients on the placebo arm of either trial had hypothyroidism. Monitoring of thyroid function tests is recommended.

Proteinuria: In the randomized RCC trial, proteinuria was reported as an adverse reaction in 9% (27/290) of patients receiving VOTRIENT, leading to discontinuation of treatment in 2 patients. There were no reports of proteinuria in patients receiving placebo. In the randomized STS trial, proteinuria was reported as an adverse reaction in 1% (2/240) of patients, and nephrotic syndrome was reported in 1 patient treated with VOTRIENT compared to none in patients receiving placebo. Treatment was withdrawn in the patient with nephrotic syndrome. Monitor urine protein at baseline and periodically as clinically indicated. Interrupt treatment for 24-hour urine protein ≥3 grams, and discontinue for repeat episodes despite dose reductions.

Infection: Serious infections (with or without neutropenia), some with fatal outcomes, have been reported. Monitor for signs and symptoms, and treat active infection promptly. Consider interruption or discontinuation of VOTRIENT.

Increased Toxicity with Other Cancer Therapy: VOTRIENT is not indicated for use in combination with other agents. Increased toxicity and mortality have been observed in clinical trials administering VOTRIENT in combination with lapatinib or with pemetrexed. The fatal toxicities observed included pulmonary hemorrhage, GI hemorrhage, and sudden death. A safe and effective combination dose has not been established with these regimens.

Increased Toxicity in Developing Organs: The safety and effectiveness of VOTRIENT in pediatric patients have not been established. VOTRIENT is not indicated for use in pediatric patients. Animal studies have demonstrated pazopanib can severely affect organ growth and maturation during early postnatal development, and resulted in toxicity to the lungs, liver, heart, and kidney, and in death. VOTRIENT may potentially cause serious adverse effects on organ development in pediatric patients, particularly in patients younger than 2 years of age.

Pregnancy Category D: VOTRIENT can cause fetal harm when administered to a pregnant woman. Women of childbearing potential should be advised of the potential hazard to the fetus and to avoid becoming pregnant while taking VOTRIENT. 

Diarrhea: Diarrhea occurred frequently and was predominantly mild to moderate in severity in both the RCC and STS clinical trials. Patients should be advised how to manage mild diarrhea and to notify their health care provider if moderate to severe diarrhea occurs so appropriate management can be implemented to minimize its impact.

Lipase Elevations: In a single-arm RCC trial, increases in lipase values were observed for 27% (48/181) of patients. In the RCC trials of VOTRIENT, clinical pancreatitis was observed in <1% (4/586) of patients.

Pneumothorax: Two of 290 patients treated with VOTRIENT and no patients on the placebo arm in the randomized RCC trial developed a pneumothorax. In the randomized STS trial, pneumothorax occurred in 3% (8/240) of patients treated with VOTRIENT and in no patients on the placebo arm.

Bradycardia: In the randomized trial of VOTRIENT for the treatment of RCC, bradycardia based on vital signs (<60 beats per minute) was observed in 19% (52/280) of patients treated with VOTRIENT and in 11% (16/144) of patients on the placebo arm. In the randomized trial of VOTRIENT for the treatment of STS, bradycardia based on vital signs (<60 beats per minute) was observed in 19% (45/238) of patients treated with VOTRIENT and in 4% (5/121) of patients on the placebo arm.

Drug Interactions: Coadministration with strong CYP3A4 inhibitors (eg, ketoconazole, ritonavir, clarithromycin) increases concentrations of pazopanib and should be avoided, but, if warranted, reduce the dose of VOTRIENT to 400 mg. Avoid grapefruit and grapefruit juice.

Concomitant use of strong CYP3A4 inducers (eg, rifampin) should be avoided due to the potential to decrease concentrations of pazopanib. VOTRIENT should not be used in patients who cannot avoid chronic use of CYP3A4 inducers.

Concomitant treatment with strong inhibitors of P-glycoprotein (PgP) or breast cancer resistance protein (BCRP) should be avoided due to risk of increased exposure to pazopanib.

CYP Substrates: Concomitant use of VOTRIENT with agents with narrow therapeutic windows that are metabolized by CYP3A4, CYP2D6, or CYP2C8 is not recommended. Coadministration may result in inhibition of the metabolism of these products and create the potential for serious adverse events.

Concomitant use of VOTRIENT and simvastatin increases the incidence of ALT elevations. If a patient develops ALT elevations, follow dosing guidelines for VOTRIENT, consider alternatives to VOTRIENT, or consider discontinuing simvastatin. There are insufficient data to assess the risk of concomitant administration of alternative statins and VOTRIENT.

Drugs That Raise Gastric pH: Avoid concomitant use of VOTRIENT with drugs that raise gastric pH (eg, esomeprazole) due to the potential to decrease concentrations of pazopanib. Consider short-acting antacids in place of proton pump inhibitors (PPIs) and H2 receptor antagonists. Separate antacid and pazopanib dosing by several hours.

Adverse Reactions in the Randomized RCC Trial: A dose interruption was required for 42% of patients on VOTRIENT. The VOTRIENT dose was reduced for 36% of patients.

The most common adverse reactions (≥20%) for VOTRIENT vs placebo were diarrhea (52% vs 9%), HTN (40% vs 10%), hair color changes (depigmentation) (38% vs 3%), nausea (26% vs 9%), anorexia (22% vs 10%), and vomiting (21% vs 8%).

Laboratory abnormalities occurring in >10% of patients and more commonly (≥5%) in patients taking VOTRIENT vs placebo included increases in ALT (53% vs 22%), AST (53% vs 19%), glucose (41% vs 33%), and total bilirubin (36% vs 10%); decreases in phosphorus (34% vs 11%), sodium (31% vs 24%), magnesium (26% vs 14%), and glucose (17% vs 3%); and leukopenia (37% vs 6%), neutropenia (34% vs 6%), thrombocytopenia (32% vs 5%), and lymphocytopenia (31% vs 24%).

Adverse Reactions in the Randomized STS Trial: A dose interruption was required for 58% of patients on VOTRIENT. The VOTRIENT dose was reduced for 38% of patients. VOTRIENT therapy was discontinued due to adverse reactions in 17% of patients.

The most common adverse reactions (≥20%) in patients who received VOTRIENT vs placebo were fatigue (65% vs 48%), diarrhea (59% vs 15%), nausea (56% vs 22%), decreased weight (48% vs 15%), HTN (42% vs 6%), decreased appetite (40% vs 19%), hair color changes (39% vs 2%), vomiting (33% vs 11%), tumor pain (29% vs 21%), dysgeusia (28% vs 3%), headache (23% vs 8%), musculoskeletal pain (23% vs 20%), myalgia (23% vs 9%), GI pain (23% vs 9%), and dyspnea (20% vs 17%).

Laboratory abnormalities occurring in >10% of STS patients and more commonly (≥5%) in patients receiving VOTRIENT vs placebo included increases in AST (51% vs 22%), ALT (46% vs 18%), glucose (45% vs 35%), alkaline phosphatase (32% vs 23%), total bilirubin (29% vs 7%), and potassium (16% vs 11%); decreases in albumin (34% vs 21%) and sodium (31% vs 20%); and leukopenia (44% vs 15%), lymphocytopenia (43% vs 36%), thrombocytopenia (36% vs 6%), and neutropenia (33% vs 7%).

In a pooled analysis of VOTRIENT clinical trials, East Asian patients had a higher frequency of neutropenia, thrombocytopenia, and palmar-plantar erythrodysesthesia syndrome than non-East Asian patients. (See Adverse Reactions, Section 6.1, in complete Prescribing Information.)

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