Abstract: |
Objective To assess the efficacy and tolerability of everolimus in advanced urothelial carcimoma (UC). Patients and Methods The present study comprised a single-arm, non-randomized study in which all patients received everolimus 10 mg orally once daily continuously (one cycle = 4 weeks). In total, 45 patients with metastatic UC progressing after one to four cytotoxic agents were enrolled between February 2009 and November 2010 at the Memorial Sloan-Kettering Cancer Center. The primary endpoints were 2-month progression-free survival (PFS) and the safety of everolimus, with the secondary endpoint being the response rate. A Simon minimax two-stage design tested the null hypothesis that the true two month PFS rate was ≤50%, as opposed to the alternative hypothesis of ≥70%. Results The most common grade 3/4 toxicities were fatigue, infection, anaemia, lymphopaenia, hyperglycaemia and hypophosphataemia. There were two partial responses in nodal metastases, with one patient achieving a 94% decrease in target lesions and remaining on drug at 26 months. An additional 12 patients exhibited minor tumour regression. There were 23 of 45 (51%) patients who were progression-free at 2 months with a median (95% CI) PFS of 2.6 (1.8-3.5) months and a median (95% CI) overall survival of 8.3 (5.5-12.1) months. No clear association was observed between mammalian target of rapamycin pathway marker expression and 2-month PFS. Conclusions Although everolimus did not meet its primary endpoint, one partial response, one near-complete response and twelve minor regressions were observed. Everolimus possesses meaningful anti-tumour activity in a subset of patients with advanced UC. Studies aiming to define the genetic basis of everolimus activity in individual responders are ongoing. © 2013 BJU International. |
Keywords: |
s6 kinase; adult; clinical article; human tissue; aged; aged, 80 and over; middle aged; gene mutation; overall survival; constipation; drug tolerability; fatigue; neutropenia; cytotoxic agent; advanced cancer; diarrhea; drug efficacy; drug withdrawal; hypophosphatemia; side effect; antineoplastic agents; lymph node metastasis; gene; edema; progression free survival; drug eruption; infection; multiple cycle treatment; pain; phase 2 clinical trial; anemia; bleeding; leukopenia; mucosa inflammation; nausea; neuropathy; thrombocytopenia; dehydration; weight reduction; kidney failure; tumor regression; bladder cancer; fibroblast growth factor receptor 3; oncogene h ras; urinary bladder neoplasms; coughing; drug fever; dyspnea; flushing; hyperglycemia; hypomagnesemia; lymphocytopenia; pneumonia; pruritus; hypoxia; chemotherapy induced emesis; confusion; hyperkalemia; hypoalbuminemia; hypokalemia; hyponatremia; phosphatidylinositol 3,4,5 trisphosphate 3 phosphatase; urinary tract infection; muscle weakness; urinary frequency; xerostomia; initiation factor 4e binding protein 1; enteritis; visceral metastasis; hyperbilirubinemia; heartburn; urinary urgency; hypercholesterolemia; heart arrhythmia; gastroesophageal reflux; carcinoma, transitional cell; clinical trials, phase ii as topic; dry skin; transitional cell carcinoma; urothelial cancer; everolimus; b raf kinase; pik3ca gene; sirolimus; hypertriglyceridemia; mtor; bronchitis; hypernatremia; partial thromboplastin time; dysgeusia; braf gene; myositis; international normalized ratio; prosthesis infection; perianal abscess; fgfr3 gene
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