STIVARGA Rx
Generic Name and Formulations:
Regorafenib 40mg; tabs.

Company:
Bayer Healthcare Pharmaceuticals Inc
Indications for STIVARGA:
Treatment of patients with metastatic colorectal cancer who have been previously treated with fluoropyrimidine-, oxaliplatin- and irinotecan-based chemotherapy, an anti-VEGF therapy, and, if KRAS wild type, an anti-EGFR therapy. Treatment of patients with locally advanced, unresectable or metastatic gastrointestinal stromal tumor (GIST) who have been previously treated with imatinib mesylate or sunitinib malate.

Adult:
Swallow whole with water after a low-fat meal (contains <600 calories and <30% fat). 160mg once daily for the first 21 days of each 28-day cycle; until disease progression or unacceptable toxicity. Dose modifications: see full prescribing information.

Children:
<18yrs: not established.

Warnings/Precautions:
Risk of severe hepatotoxicity (may be fatal). Monitor hepatic function before starting and at least every 2 weeks during first 2 months of treatment; interrupt and reduce or discontinue if hepatotoxicity or hepatocellular necrosis occurs. Severe hepatic impairment: not recommended. Increased risk of hemorrhage; permanently discontinue if severe or life-threatening. Interrupt and reduce or permanently discontinue if dermatological toxicity occurs (eg, hand-foot skin reaction [a.k.a. palmar-plantar erythrodysesthesia], rash). Ensure BP is controlled before starting; monitor weekly for the first 6 weeks then every cycle or as clinically indicated; withhold if severe or uncontrolled. Myocardial ischemia/infarction: withhold if new or acute onset develops; resume when resolved. Discontinue if reversible posterior leukoencephalopathy syndrome (RPLS) or GI perforation/fistula develops. Wound healing complications: stop treatment at least 2 weeks before surgery; discontinue if wound dehiscence occurs. Fetal toxicity. Pregnancy (Cat. D); use effective contraception during treatment and up to 2 months after completion. Nursing mothers: not recommended.

Interactions:
Avoid concomitant strong CYP3A4 inducers (eg, rifampin, phenytoin, carbamazepine, phenobarbital, St. John’s Wort). Avoid concomitant strong CYP3A4 inhibitors (eg, clarithromycin, grapefruit juice, itraconazole, ketoconazole, posaconazole, telithromycin, voriconazole). Monitor INR levels with concomitant warfarin.

Pharmacological Class:
Kinase inhibitor.

Adverse Reactions:
Asthenia/fatigue, decreased appetite and food intake, hand-foot skin reaction, diarrhea, mucositis, weight loss, infection, hypertension, dysphonia, GI and abdominal pain, rash, fever, nausea; hepatotoxicity, hemorrhage, GI perforation, cardiac ischemia/infarction, RPLS.

Metabolism:
Hepatic (CYP3A4, UGT1A9); 99.5% protein bound.

Elimination:
Fecal (major), renal.

Generic Availability:
NO

How Supplied:
Tabs—84 (3 x 28)