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Ref Type Journal Article
PMID (22998907)
Authors Kowalski M, Guindon J, Brazas L, Moore C, Entwistle J, Cizeau J, Jewett MA, MacDonald GC
Title A phase II study of oportuzumab monatox: an immunotoxin therapy for patients with noninvasive urothelial carcinoma in situ previously treated with bacillus Calmette-Guérin.
Journal Vol Issue Date Pages Journal Short Title
The Journal of urology 188 5 2012 Nov 1712-8 J Urol
URL
Abstract Text A phase II study was performed to assess the efficacy and tolerability of intravesical oportuzumab monatox in patients with urothelial carcinoma in situ of the bladder. Bacillus Calmette-Guérin treatment had previously failed in all patients.A total of 46 patients received 1 induction cycle of 6 (cohort 1) or 12 (cohort 2) weekly intravesical oportuzumab monatox (VB4-845) instillations of 30 mg, followed by up to 3 maintenance cycles of 3 weekly administrations every 3 months.A complete response to oportuzumab monatox was seen in 9 of 22 patients (41%) in cohort 1 and 9 of 23 (39%) in cohort 2 at the 3-month evaluation. A total of 20 patients (44%) achieved a complete response. Two other patients without carcinoma in situ who achieved a complete response were not included in the study due to the development of noninvasive papillary (Ta) disease. Median time to recurrence in patients who achieved a complete response was 274 and 408 days in cohorts 1 and 2, respectively. Overall 7 patients (16%) remained disease-free. Post-study assessment demonstrated that these patients were still disease-free at last followup (18 to 25 months). The most common adverse events were mild to moderate reversible bladder symptoms.Oportuzumab monatox was effective and well tolerated in patients with bacillus Calmette-Guérin refractory carcinoma in situ of the bladder. These results demonstrate the clinical benefit of oportuzumab monatox and support its continued development for the second line treatment of nonmuscle invasive bladder cancer.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References