title: Cytogenetic study of ten carcinomas of the bladder: involvement of chromosomes 1 and 11.
abstract: In direct preparations of ten untreated transitional cell carcinomas of the bladder, chromosomes #1 and #11 were most frequently involved in structural changes (in at least seven tumors each). Three tumors had one or two 11p- chromosomes, and, in other tumors, chromosome #11 had taken part in translocations or isochromosome formation, which, except in one tumor, resulted in a loss of short arm material. Also, there was a tendency for the presence of fewer than expected normal chromosomes #11. Chromosome #1 anomalies are common in most types of tumor; however, chromosome #11 abnormalities, particularly the loss of short arm material, are not common and may thus characterize carcinoma of the bladder, a finding that is of interest in view of the location of an oncogene, c-Ha-ras1, on 11p. Translocations probably involved chromosome #17 in four tumors. Structurally changed chromosomes #3 were seen in four tumors, including one or two 3q- chromosomes in two or possibly three tumors.
mesh_terms: D000328:Adult; D000368:Aged; D002295:Carcinoma, Transitional Cell / Q000235:genetics*; D002872:Chromosome Deletion; D002900:Chromosomes, Human, 1-3; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D001749:Urinary Bladder Neoplasms / Q000235:genetics*