title: Use of clonal assay in determination of urothelial drug sensitivity in carcinoma in situ of the bladder: clinical correlations in 5 patients.
abstract: Five patients with carcinoma in situ of the bladder, including 4 with associated grossly apparent tumors, were followed for 2 years or until invasive disease appeared while receiving intravesical chemotherapy. In vitro drug sensitivity determinations were made using the clonal assay. Of 9 retrospective and prospective in vitro/in vivo drug sensitivity correlations 7 proved correct. However, in vitro growth occurred in only 50 per cent of the urothelial samplings in which adequate cells were present. The assay has some potential use in selecting agents for intravesical chemotherapy but the problem of unpredictable and limited in vitro growth must be overcome.
mesh_terms: D000287:Administration, Topical; D000368:Aged; D000970:Antineoplastic Agents / Q000008:administration & dosage* / Q000494:pharmacology; D002278:Carcinoma in Situ / Q000188:drug therapy*; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D002999:Clone Cells / Q000187:drug effects; D004848:Epithelium / Q000187:drug effects / Q000473:pathology; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008875:Middle Aged; D001743:Urinary Bladder / Q000473:pathology; D001749:Urinary Bladder Neoplasms / Q000188:drug therapy*
chemical_list: D000970:Antineoplastic Agents