High-density mapping of chromosomal arm 1q in renal collecting duct carcinoma: region of minimal deletion at 1q32.1-32.2

Cancer Res. 1996 Nov 1;56(21):5044-6.


Collecting duct carcinoma (CDC) of the kidney is a rare malignant neoplasm of distal nephron origin. Previous studies of CDC have shown loss of heterozygosity on chromosomal arm 1q in 57% of the cases studied. To better characterize 1q loss in CDC, we performed high-density mapping of the entire long arm of chromosome 1 in 13 CDC tumor samples. We observed complete deletion of chromosomal arm 1q in 5 samples and partial deletion in 4 additional tumors. Our study further showed that the region of minimal deletion is located at 1q32.1-32.2. Sixty-nine percent (9 of 13) of the tumors showed loss of heterozygosity in this area. These data suggest that a gene or group of genes that contribute to the development of distal nephron tumors may be located within the 1q32.1-32.2 region.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chromosome Deletion*
  • Chromosome Mapping*
  • Chromosomes, Human, Pair 1*
  • Humans
  • Kidney Neoplasms / genetics*
  • Kidney Tubules, Collecting*