Which Exon contain the PIK3CA c.3140A>G (H1047R) Mutation in Breast Cancer.?

As iam studying Mutations in PIK3CA gene in Breast Cancer so I want to know the location of H1047R mutation whether it is found on Exon 20 or Exon 21? As in literature these mutation found in exon...

01 June 2017 4,022 3 View