ClinVar Miner

Submissions for variant NM_006218.4(PIK3CA):c.341A>G (p.Asn114Ser)

gnomAD frequency: 0.00001  dbSNP: rs746860750
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Fulgent Genetics, Fulgent Genetics RCV005033964 SCV005661899 uncertain significance Familial cancer of breast; Hemifacial myohyperplasia; Megalencephaly-capillary malformation-polymicrogyria syndrome; Congenital macrodactylia; Seborrheic keratosis; Epidermal nevus; CLAPO syndrome; CLOVES syndrome; Ovarian cancer; Cerebral cavernous malformation 4; Cowden syndrome 5; Hepatocellular carcinoma; Gastric cancer; Colorectal cancer; Lung cancer 2024-06-20 criteria provided, single submitter clinical testing
CeGaT Center for Human Genetics Tuebingen RCV003437203 SCV004149433 uncertain significance not provided 2022-08-01 criteria provided, single submitter clinical testing
Labcorp Genetics (formerly Invitae), Labcorp RCV000470301 SCV000541322 uncertain significance Cowden syndrome 2025-09-23 criteria provided, single submitter clinical testing This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 114 of the PIK3CA protein (p.Asn114Ser). This variant is present in population databases (rs746860750, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with PIK3CA-related conditions. ClinVar contains an entry for this variant (Variation ID: 403919). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt PIK3CA protein function with a positive predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

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