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  • Title: Renal cell carcinoma of end-stage renal disease: an analysis of chromosome 3, 7, and 17 abnormalities by microsatellite amplification.
    Author: Hughson MD, Bigler S, Dickman K, Kovacs G.
    Journal: Mod Pathol; 1999 Mar; 12(3):301-9. PubMed ID: 10102616.
    Abstract:
    End-stage renal disease (ESRD) patients have an increased risk of carcinoma of the kidney, thought to result from development of a disproportionately high number of papillary renal cell carcinomas. This study was undertaken to discover whether these renal carcinomas have a deletion of the short arm of chromosome 3, which characterizes conventional (clear cell) carcinomas, or trisomies of chromosomes 7 and 17, which characterize the majority of sporadic papillary renal cell neoplasms. Archival specimens from 17 end-stage kidneys containing renal cell carcinomas were collected from 16 ESRD patients. DNA was extracted from paraffin blocks of tumor and nontumorous tissue. Microsatellites on the long and short arm of chromosomes 3, 7, and 17 were amplified in paired "normal" tumor samples. Heterozygous loci were analyzed for loss of heterozygosity, indicating a deletion, and for allele ratio differences, indicating a duplication. Successful microsatellite studies were obtained on 18 tumors (2 conventional carcinomas, 14 papillary carcinomas, 2 unclassified [solid, eosinophilic cell] carcinomas). Of the papillary carcinomas, none had a 3p deletion, five had trisomies of both chromosomes 7 and 17, six had no changes in chromosomes 7 and 17, and three had either trisomy 7 or trisomy 17 but not both. A 3p deletion was present in one of two conventional carcinomas. No chromosome 3, 7, or 17 changes were identified in the unclassified carcinomas. The genetic abnormalities in 6 of 18 ESRD tumors seemed to be the same as those found in sporadic papillary or conventional renal cell carcinomas. Nine of 14 papillary carcinomas did not show allelic duplications of chromosomes 7 and 17. This is uncharacteristic of the findings reported for most of the sporadic forms of the neoplasm and suggests that the genetic mechanism underlying the development of many papillary renal cell carcinomas in ESRD patients might be different than that of the general population.
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