Frequent microsatellite instability in primary small cell lung cancer.

Journal Article (Journal Article)

Alterations in microsatellite sequences characterize hereditary nonpolyposis colorectal cancer. This microsatellite instability is due in some kindreds to a germline mutation of the mismatch repair gene hMSH2 on chromosome 2p. Although microsatellite alterations have been reported in other hereditary nonpolyposis colorectal cancer-associated tumors including endometrial and gastric cancers, such changes were not detected in most other major neoplasms. We found that 15 of 33 (45%) primary small cell lung cancers, tumors not found in the hereditary nonpolyposis colorectal cancer syndrome, displayed alterations of microsatellite loci which consisted of deletions or expansions of (CA)n dinucleotide repeats. In 8 of these 15 neoplasms, microsatellite instability was detected in more than 10% of all tested alleles. However, small cell lung cancers that revealed instability contained widespread allelic loss and had a uniformly poor prognosis. These results expand considerably the known spectrum of tumors with microsatellite instability.

Full Text

Duke Authors

Cited Authors

  • Merlo, A; Mabry, M; Gabrielson, E; Vollmer, R; Baylin, SB; Sidransky, D

Published Date

  • April 15, 1994

Published In

Volume / Issue

  • 54 / 8

Start / End Page

  • 2098 - 2101

PubMed ID

  • 8174113

Pubmed Central ID

  • 8174113

International Standard Serial Number (ISSN)

  • 0008-5472


  • eng

Conference Location

  • United States