# JAK2 NP_004963.1:p.V617X

National Cancer Institute

## Source

National Cancer Institute. JAK2 NP_004963.1:p.V617X. NCI Thesaurus. Code C117283.

A change in the amino acid residue at position 617 in the tyrosine-protein kinase JAK2 protein where valine has been replaced by another amino acid. A change to phenylalanine at this position is associated with polycythemia vera.