NM_004985.5(KRAS):c.470A>G (p.Tyr157Cys) AND RASopathy

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Jul 14, 2022
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:: RCV002517746.3

Allele description [Variation Report for NM_004985.5(KRAS):c.470A>G (p.Tyr157Cys)]

NM_004985.5(KRAS):c.470A>G (p.Tyr157Cys)

Gene:

KRAS:KRAS proto-oncogene, GTPase [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

12p12.1

Genomic location:

Preferred name:

NM_004985.5(KRAS):c.470A>G (p.Tyr157Cys)

HGVS:

NC_000012.12:g.25209892T>C
NG_007524.2:g.46112A>G
NM_001369786.1:c.*24A>G
NM_001369787.1:c.470A>G
NM_004985.5:c.470A>GMANE SELECT
NM_033360.4:c.*24A>G
NP_001356716.1:p.Tyr157Cys
NP_004976.2:p.Tyr157Cys
LRG_344t1:c.470A>G
LRG_344t2:c.*24A>G
LRG_344:g.46112A>G
LRG_344p1:p.Tyr157Cys
NC_000012.11:g.25362826T>C
NG_007524.1:g.46029A>G
NM_004985.3:c.470A>G

Protein change:

Y157C

Links:

dbSNP: rs794727720

NCBI 1000 Genomes Browser:

rs794727720

Molecular consequence:

NM_001369786.1:c.*24A>G - 3 prime UTR variant - [Sequence Ontology: SO:0001624]
NM_033360.4:c.*24A>G - 3 prime UTR variant - [Sequence Ontology: SO:0001624]
NM_001369787.1:c.470A>G - missense variant - [Sequence Ontology: SO:0001583]
NM_004985.5:c.470A>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: RASopathy
Synonyms:: rasopathies; Noonan spectrum disorder
Identifiers:: MONDO: MONDO:0021060; MedGen: C5555857

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV002955633	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Jul 14, 2022)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV002955633

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Jul 14, 2022)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002955633.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C65"). ClinVar contains an entry for this variant (Variation ID: 197769). This missense change has been observed in individual(s) with clinical features of KRAS-related conditions (Invitae). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces tyrosine, which is neutral and polar, with cysteine, which is neutral and slightly polar, at codon 157 of the KRAS protein (p.Tyr157Cys).

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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