Loss of heterozygosity analyzed by single nucleotide polymorphism array in cancer

World J Gastroenterol. 2005 Nov 21;11(43):6740-4. doi: 10.3748/wjg.v11.i43.6740.


Neoplastic progression is generally characterized by the accumulation of multiple genetic alterations including loss of tumor suppression gene function. Loss of heterozygosity (LOH) has been used to identify genomic regions that harbor tumor suppressor genes and to characterize different tumor types, pathological stages and progression. LOH pattern has been detected by allelotyping using restriction fragment length polymorphism, and later by simple sequence length polymorphisms (SSLPs or microsatellite) for 10 years. This paper reviews the detection of LOH by recently developed single nucleotide polymorphism (SNP) arrays (all analyzed by Affymetrix array); furthermore, its advantage and disadvantage were analyzed in several kinds of cancer.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Genes, Tumor Suppressor
  • Humans
  • Loss of Heterozygosity*
  • Microsatellite Repeats
  • Neoplasms / genetics*
  • Polymorphism, Single Nucleotide*
  • Sequence Analysis, DNA / methods*