Food and Drug Administration drug approval summary: Sunitinib malate for the treatment of gastrointestinal stromal tumor and advanced renal cell carcinoma.
On January 26, 2006, sunitinib (Sutent) received regular approval as monotherapy for the treatment of patients with gastrointestinal stromal tumor after disease progression on or intolerance to imatinib mesylate (Gleevec). Time-to-tumor progression (TTP) of sunitinib-treated patients was superior to that of placebo-treated patients. Median TTP of sunitinib-treated patients was 27.3 weeks, compared with 6.4 weeks for placebo-treated patients (p < .0001). Partial responses were observed in 6.8% of sunitinib-treated patients and no placebo-treated patients. Sunitinib also received accelerated approval on January 26, 2006, as monotherapy for treatment of advanced renal cell carcinoma (RCC). In two single-arm trials of sunitinib in patients with metastatic RCC, partial responses were observed in 25.5% (95% confidence interval [CI], 17.5, 34.9) and 36.5% (95% CI, 24.7, 49.6) of patients. Median response durations in the two trials were 27.1 weeks (95% CI, 24.4, incalculable) and 54 weeks (95% CI, 34.3, 70.1). Treatment-emergent adverse events in sunitinib-treated patients included diarrhea, mucositis, skin abnormalities, altered taste, electrolyte abnormalities, hypertension, and diminution in left ventricular ejection fraction. Cardiac safety of sunitinib in patients with preexisting cardiac abnormalities remains unknown. Based on nonclinical findings, physicians prescribing sunitinib should monitor for adrenal insufficiency in patients who undergo stressors such as surgery, trauma, or severe infection. Caution should be exercised when administering sunitinib in combination with known CYP3A4 inducers or inhibitors.
Rock
Edwin P
EP
Food and Drug Administration, Division of Drug Oncology Products, 10903 New Hampshire Avenue, Bldg. 22, Rm. 2133, Silver Spring, Maryland 20903, USA. edwin.rock@fda.hhs.gov
Goodman
Vicki
V
Jiang
Janet X
JX
Mahjoob
Kooros
K
Verbois
S Leigh
SL
Morse
David
D
Dagher
Ramzi
R
Justice
Robert
R
Pazdur
Richard
R
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D002292:Carcinoma, Renal Cell / Q000188:drug therapy* / Q000473:pathology; D002986:Clinical Trials as Topic; D017277:Drug Approval; D005260:Female; D046152:Gastrointestinal Stromal Tumors / Q000188:drug therapy*; D006801:Humans; D007211:Indoles / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D007680:Kidney Neoplasms / Q000188:drug therapy* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011758:Pyrroles / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D012449:Safety; D000077210:Sunitinib; D014481:United States; D014486:United States Food and Drug Administration
D000970:Antineoplastic Agents; D007211:Indoles; D011758:Pyrroles; D000077210:Sunitinib