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Clinical Trial Summary

This is a Phase II, single cohort study designed to evaluate outcomes in patients with muscle invasive bladder cancer (MIBC) with variant histology who receive neoadjuvant chemotherapy (NAC) with or without immunotherapy (IO) followed by trimodal therapy (TMT). Enrolled patients will undergo at least 3 cycles of NAC +/- IO (oncologist's choice) followed by a four- or six-week course of concurrent standard of care chemotherapy and radiation therapy. These patients will be compared with historical controls of patients with a diagnosis of pure urothelial carcinoma who have undergone TMT. This study has been designed to test the hypothesis that variant histology TMT can be delivered within 45 days of NAC +/- IO and is therefore a viable option in patients who are risk of systemic disease spread.


Clinical Trial Description

Trimodal therapy (TMT) is accepted as an NCCN category 1 alternative to radical cystectomy (with neoadjuvant chemotherapy) in patients with cT2N0M0 muscle-invasive urothelial cell bladder cancer (MIBC). Not all patients with MIBC have pure urothelial cell carcinoma; urothelial carcinoma with variant histology (VH) described any morphologic variant of conventional urothelial carcinoma that is believed to be derived from urothelial carcinoma and is typically admixed with conventional urothelial carcinoma in the same tumor. Variant histologies described include squamous differentiation, glandular differentiation, micropapillary, sarcomatoid, small cell/neuroendocrine, plasmacytoid and nested variant. This is a rare tumor type and understudied. For patients with variant histologies there is limited data on the use of trimodal therapy. There are a couple single institution retrospective studies and data from the NCDB, but no prospective data. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06417190
Study type Interventional
Source Cedars-Sinai Medical Center
Contact Clinical Trial Navigator
Phone 3104232133
Email cancer.trial.info@cshs.org
Status Not yet recruiting
Phase Phase 2
Start date July 2024
Completion date July 2030

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