Español
Questions About Cancer? 1-800-4-CANCER
  • Print
  • Email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

NCI Dictionary of Genetics Terms

CNV

Refers to the genetic trait involving the number of copies of a particular gene present in the genome of an individual. Genetic variants, including insertions, deletions, and duplications of segments of DNA, are also collectively referred to as CNVs. CNVs account for a significant proportion of the genetic variation between individuals. Also called copy number variant.