Journal
CLINICAL CANCER RESEARCH
Volume 14, Issue 1, Pages 224-229Publisher
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/1078-0432.CCR-07-0733
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Funding
- NCI NIH HHS [U01-CN-4550-01, 5 P30 CA16672, U10 CA45809, U01-CN-85186] Funding Source: Medline
- DIVISION OF CANCER PREVENTION AND CONTROL [N01CN085186] Funding Source: NIH RePORTER
- NATIONAL CANCER INSTITUTE [U10CA045809, P30CA016672] Funding Source: NIH RePORTER
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Purpose: The study aims to evaluate the efficacy and toxicity of fenretinide in preventing tumor recurrence in patients with transitional cell carcinoma (TCC) of the bladder. Experimental Design: We conducted a multicenter phase ill, randomized, placebo-controlled trial of fenretinide (200 mg/day orally for 12 months) in patients with non - muscle-invasive bladder-TCC (stagesTa,Tis, or T1) after transurethral resection with or without adjuvant intravesical Bacillus Calmette-Guerin (BCG). Patients received cystoscopic evaluation and bladder cytology every 3 months during the 1-year on study drug and a final evaluation at 15 months. The primary endpoint was time to recurrence. Results: A total of 149 patients were enrolled; 137 were evaluable for recurrence. The risk of recurrence was considered to be low in 72% (no prior BCG) and intermediate or high in 32% (prior BCG) of the evaluable patients. Of the lower-risk group, 68% had solitary tumors and 32% had multifocal, low-grade papillary (Ta, grade 1 or grade 2) tumors. The 1-year recurrence rates by Kaplan-Meier estimate were 32.3% (placebo) versus 31.5% (fenretinide; P = 0.88 log-rank test). fenretinide was well tolerated and had no unexpected toxic effects; only elevated serum triglyceride levels were significantly more frequent on fenretinide (versus placebo). The Data Safety and Monitoring Board recommended study closure at 149 patients (before reaching the accrual goal of 160 patients) because an interim review of the data showed a low likelihood of detecting a difference between the two arms, even if the original accrual goal was met. Conclusions: Although well tolerated, fenretinide did not reduce the time-to-recurrence in patients with Ta,T1, or TisTCC of the bladder.
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