PIK3CA codon(s) 542, 545, 1047 any
PIK3CA exon(s) 10, 20, 21 any
|Tumor(s)||Diffuse Large B Cell Lymphoma|
Chronic Lymphocytic Leukemia
PIK3CA is the the p110 catalytic subunit-alpha of phosphatidylinositol 3 kinase. Activating mutations of PIK3CA occur in various types. PIK3CA mutations have been reported in approximately 8% of cases of diffuse large B cell lymphoma and are typically mutually exclusive of PTEN loss in that tumor type. PIK3CA mutations are very rare in chronic lymphocytic leukemia and believed to be absent in acute myeloid leukemia and myelodysplastic syndromes. PIK3CA mutations are potentially targetable in some settings and pathway inhibitors are currently under investigation .
Muller CI, et al. Rare mutations of the PIK3CA gene in malignancies of the hematopoietic system as well as endometrium, ovary, prostate and osteosarcomas, and discovery of a PIK3CA pseudogene. Leuk Res 2007;31(1):27-32
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