rs1137282

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BA1BP4BP7

This summary comes from the ClinGen Evidence Repository: The c.519T>C variant in the KRAS gene is a synonymous (silent) variant (p.Asp173=) at a nucleotide that is not conserved as shown by UCSC browser, and not predicted by SpliceAI to impact splicing (BP4, BP7). The filtering allele frequency in gnomAD v2.1.1 is 0.2201 (28382/128282 alleles with 3073 homozygotes) in the European (non-Finnish) population, which is higher than the ClinGen RASopathy VCEP threshold (>0.0005) for BA1, and therefore meets this criterion (BA1). In summary, this variant meets criteria to be classified as benign for autosomal dominant RASopathies based on the ACMG/AMP criteria applied, as specified by the ClinGen RASopathy Variant Curation Expert Panel: BA1, BP4, BP7 (Specification Version 2.3, 12/3/2024) LINK:https://erepo.genome.network/evrepo/ui/classification/CA135582/MONDO:0021060/044

Frequency

Genomes: 𝑓 0.20 ( 2983 hom., cov: 33)
Exomes 𝑓: 0.21 ( 31762 hom. )

Consequence

KRAS
NM_004985.5 synonymous

Scores

2

Clinical Significance

Benign reviewed by expert panel B:15

Conservation

PhyloP100: 0.886
Variant links:
Genes affected
KRAS (HGNC:6407): (KRAS proto-oncogene, GTPase) This gene, a Kirsten ras oncogene homolog from the mammalian ras gene family, encodes a protein that is a member of the small GTPase superfamily. A single amino acid substitution is responsible for an activating mutation. The transforming protein that results is implicated in various malignancies, including lung adenocarcinoma, mucinous adenoma, ductal carcinoma of the pancreas and colorectal carcinoma. Alternative splicing leads to variants encoding two isoforms that differ in the C-terminal region. [provided by RefSeq, Jul 2008]
ETFRF1 (HGNC:27052): (electron transfer flavoprotein regulatory factor 1) Involved in respiratory electron transport chain. Located in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4
For more information check the summary or visit ClinGen Evidence Repository.
BP7
For more information check the summary or visit ClinGen Evidence Repository.
BA1
For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
KRASNM_004985.5 linkc.519T>C p.Asp173Asp synonymous_variant Exon 5 of 5 ENST00000311936.8 NP_004976.2 P01116-2A0A024RAV5

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
KRASENST00000311936.8 linkc.519T>C p.Asp173Asp synonymous_variant Exon 5 of 5 1 NM_004985.5 ENSP00000308495.3 P01116-2

Frequencies

GnomAD3 genomes
AF:
0.195
AC:
29671
AN:
151992
Hom.:
2977
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.175
Gnomad AMI
AF:
0.396
Gnomad AMR
AF:
0.196
Gnomad ASJ
AF:
0.170
Gnomad EAS
AF:
0.0981
Gnomad SAS
AF:
0.192
Gnomad FIN
AF:
0.150
Gnomad MID
AF:
0.234
Gnomad NFE
AF:
0.220
Gnomad OTH
AF:
0.204
GnomAD3 exomes
AF:
0.191
AC:
47675
AN:
249898
Hom.:
4761
AF XY:
0.194
AC XY:
26205
AN XY:
135124
show subpopulations
Gnomad AFR exome
AF:
0.177
Gnomad AMR exome
AF:
0.171
Gnomad ASJ exome
AF:
0.163
Gnomad EAS exome
AF:
0.0958
Gnomad SAS exome
AF:
0.191
Gnomad FIN exome
AF:
0.156
Gnomad NFE exome
AF:
0.222
Gnomad OTH exome
AF:
0.209
GnomAD4 exome
AF:
0.207
AC:
301862
AN:
1457408
Hom.:
31762
Cov.:
31
AF XY:
0.207
AC XY:
149768
AN XY:
725240
show subpopulations
Gnomad4 AFR exome
AF:
0.177
Gnomad4 AMR exome
AF:
0.175
Gnomad4 ASJ exome
AF:
0.162
Gnomad4 EAS exome
AF:
0.116
Gnomad4 SAS exome
AF:
0.193
Gnomad4 FIN exome
AF:
0.162
Gnomad4 NFE exome
AF:
0.217
Gnomad4 OTH exome
AF:
0.201
GnomAD4 genome
AF:
0.195
AC:
29692
AN:
152110
Hom.:
2983
Cov.:
33
AF XY:
0.190
AC XY:
14159
AN XY:
74350
show subpopulations
Gnomad4 AFR
AF:
0.175
Gnomad4 AMR
AF:
0.196
Gnomad4 ASJ
AF:
0.170
Gnomad4 EAS
AF:
0.0981
Gnomad4 SAS
AF:
0.193
Gnomad4 FIN
AF:
0.150
Gnomad4 NFE
AF:
0.220
Gnomad4 OTH
AF:
0.206
Alfa
AF:
0.213
Hom.:
3561
Bravo
AF:
0.196
Asia WGS
AF:
0.183
AC:
634
AN:
3466
EpiCase
AF:
0.216
EpiControl
AF:
0.222

ClinVar

Significance: Benign
Submissions summary: Benign:15
Revision: reviewed by expert panel
LINK: link

Submissions by phenotype

not specified Benign:8
-
Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Jun 08, 2015
Eurofins Ntd Llc (ga)
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Jan 15, 2015
Greenwood Genetic Center Diagnostic Laboratories, Greenwood Genetic Center
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Nov 12, 2023
Unidad de Genómica Garrahan, Hospital de Pediatría Garrahan
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant is classified as Benign based on local population frequency. This variant was detected in 23% of patients studied by a panel of primary immunodeficiencies. Number of patients: 22. Only high quality variants are reported. -

-
PreventionGenetics, part of Exact Sciences
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

-
Clinical Genetics, Academic Medical Center
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Mar 19, 2007
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

-
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

not provided Benign:3
Nov 22, 2024
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: not provided

- -

Jun 07, 2016
GeneDx
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

RASopathy Benign:2
Feb 04, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Dec 03, 2024
ClinGen RASopathy Variant Curation Expert Panel
Significance: Benign
Review Status: reviewed by expert panel
Collection Method: curation

The c.519T>C variant in the KRAS gene is a synonymous (silent) variant (p.Asp173=) at a nucleotide that is not conserved as shown by UCSC browser, and not predicted by SpliceAI to impact splicing (BP4, BP7). The filtering allele frequency in gnomAD v2.1.1 is 0.2201 (28382/128282 alleles with 3073 homozygotes) in the European (non-Finnish) population, which is higher than the ClinGen RASopathy VCEP threshold (>0.0005) for BA1, and therefore meets this criterion (BA1). In summary, this variant meets criteria to be classified as benign for autosomal dominant RASopathies based on the ACMG/AMP criteria applied, as specified by the ClinGen RASopathy Variant Curation Expert Panel: BA1, BP4, BP7 (Specification Version 2.3, 12/3/2024) -

Noonan syndrome Benign:1
Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Cardiovascular phenotype Benign:1
Jul 19, 2016
Ambry Genetics
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.24
CADD
Benign
7.9
DANN
Benign
0.79
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs1137282; hg19: chr12-25362777; COSMIC: COSV55562336; COSMIC: COSV55562336; API