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NM_006218.4(PIK3CA):c.1624G>A (p.Glu542Lys) AND PIK3CA-related disorder

Germline classification:
Pathogenic (1 submission)
Last evaluated:
Jul 24, 2024
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV004532404.3

Allele description [Variation Report for NM_006218.4(PIK3CA):c.1624G>A (p.Glu542Lys)]

NM_006218.4(PIK3CA):c.1624G>A (p.Glu542Lys)

Gene:
PIK3CA:phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
3q26.32
Genomic location:
Preferred name:
NM_006218.4(PIK3CA):c.1624G>A (p.Glu542Lys)
Other names:
NM_006218.3(PIK3CA):c.1624G>A; NM_006218.4(PIK3CA):c.1624G>A
HGVS:
  • NC_000003.12:g.179218294G>A
  • NG_012113.2:g.74772G>A
  • NM_006218.4:c.1624G>AMANE SELECT
  • NP_006209.2:p.Glu542Lys
  • LRG_310t1:c.1624G>A
  • LRG_310:g.74772G>A
  • NC_000003.11:g.178936082G>A
  • NM_006218.2:c.1624G>A
  • NM_006218.3:c.1624G>A
  • P42336:p.Glu542Lys
  • NM_006218.2:c.1625G>A
Protein change:
E542K; GLU542LYS
Links:
UniProtKB: P42336#VAR_026173; OMIM: 171834.0009; dbSNP: rs121913273
NCBI 1000 Genomes Browser:
rs121913273
Molecular consequence:
  • NM_006218.4:c.1624G>A - missense variant - [Sequence Ontology: SO:0001583]
Functional consequence:
gain_of_function_variant [Sequence Ontology: SO:0002053]

Condition(s)

Name:
PIK3CA-related disorder
Synonyms:
PIK3CA-related condition; PIK3CA-Related Disorders
Identifiers:

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004717831PreventionGenetics, part of Exact Sciences
no assertion criteria provided
Pathogenic
(Jul 24, 2024) 		germlineclinical testing

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Details of each submission

From PreventionGenetics, part of Exact Sciences, SCV004717831.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided

Description

The PIK3CA c.1624G>A variant is predicted to result in the amino acid substitution p.Glu542Lys. This is a recurrent somatic variant reported in individuals with dysplastic megalencephaly, hemimegalencephaly, or CLOVES syndrome (Kurek et al. 2012. PubMed ID: 22658544; Mirzaa et al. 2013. PubMed ID: 23946963; D’Gama et al. 2015. PubMed ID: 25599672; Mirzaa et al. 2016. PubMed ID: 27631024). This variant has not been reported in a large population database, indicating this variant is rare. This variant is interpreted as pathogenic in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/31944/). This variant is interpreted as pathogenic.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Oct 8, 2024