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NM_000251.3(MSH2):c.1778A>T (p.Gln593Leu) AND not specified

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Feb 8, 2019
Review status:
1 star out of maximum of 4 stars
criteria provided, single submitter
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:
RCV001193996.1

Allele description [Variation Report for NM_000251.3(MSH2):c.1778A>T (p.Gln593Leu)]

NM_000251.3(MSH2):c.1778A>T (p.Gln593Leu)

Gene:
MSH2:mutS homolog 2 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
2p21
Genomic location:
Preferred name:
NM_000251.3(MSH2):c.1778A>T (p.Gln593Leu)
HGVS:
  • NC_000002.12:g.47475043A>T
  • NG_007110.2:g.76920A>T
  • NM_000251.3:c.1778A>TMANE SELECT
  • NM_001258281.1:c.1580A>T
  • NP_000242.1:p.Gln593Leu
  • NP_000242.1:p.Gln593Leu
  • NP_001245210.1:p.Gln527Leu
  • LRG_218t1:c.1778A>T
  • LRG_218:g.76920A>T
  • LRG_218p1:p.Gln593Leu
  • NC_000002.11:g.47702182A>T
  • NM_000251.2:c.1778A>T
Protein change:
Q527L
Links:
dbSNP: rs1558517711
NCBI 1000 Genomes Browser:
rs1558517711
Molecular consequence:
  • NM_000251.3:c.1778A>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001258281.1:c.1580A>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Synonyms:
AllHighlyPenetrant
Identifiers:
MedGen: CN169374

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Assertion and evidence details

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Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV001363212Women's Health and Genetics/Laboratory Corporation of America, LabCorp
criteria provided, single submitter

(LabCorp Variant Classification Summary - May 2015)		Uncertain significance
(Feb 8, 2019) 		germlineclinical testing

Citation Link

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Summary from all submissions

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

Details of each submission

From Women's Health and Genetics/Laboratory Corporation of America, LabCorp, SCV001363212.1

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

Description

Variant summary: The variant, MSH2 c.1778A>T (p.Gln593Leu) results in a non-conservative amino acid change located in the DNA mismatch repair protein MutS, core domain of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant was absent in 246228 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.1778A>T in individuals affected with Lynch Syndrome and no experimental evidence demonstrating its impact on protein function have been reported. One clinical diagnostic laboratory has submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance.

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

Last Updated: Sep 29, 2024