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Molecular assay reagents intended to identify mutations in the phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha (PIK3CA) gene, located at chromosome 3q26.32, which encodes the protein serine/threonine protein kinase PIK3CA. Genetic variants at this locus have been associated with various diseases, including breast cancer, colon cancer; congenital lipomatous overgrowth, vascular malformations, and epidermal nevi; congenital macrodactylia; Cowden syndrome 5; epidermal nevus; hepatocellular carcinoma; lung cancer; megalencephaly cutis marmorata telangiectatica congenita; ovarian cancer; seborrheic keratosis; and stomach cancer.
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