Glossary Term

Variant Allele Frequency

PCR TermsEN

Definition

The relative rate of occurrence of a specific variant allele compared to the total number of alleles at that locus in the sample. This measurement may be reported as a ratio or percentage.

Extended Notes

Source: National Cancer Institute, NCI Thesaurus 26.09d, C154665. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-20. No individual clinical interpretation or human reviewer is asserted.

Also Known As

VAFVariant Allele Frequency

References

NCI Thesaurus 26.09d — Variant Allele Frequency (C154665)
Source: National Cancer Institute, NCI Thesaurus 26.09d, C154665. NCI definition, reproduced without modification under CC BY 4.0.