12-25245361-T-C

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS1

This summary comes from the ClinGen Evidence Repository: The filtering allele frequency of the c.24A>G (p.Val8=) variant in the KRAS gene is 0.0499% (35/51828) of European chromosomes by the Exome Aggregation Consortium, which is a high enough frequency to be classified as likely benign based on thresholds defined by the ClinGen RASopathy Expert Panel (BS1; PMID:29493581) LINK:https://erepo.genome.network/evrepo/ui/classification/CA135558/MONDO:0021060/004

Frequency

Genomes: 𝑓 0.00023 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00048 ( 0 hom. )

Consequence

KRAS
NM_004985.5 synonymous

Scores

2

Clinical Significance

Likely benign reviewed by expert panel B:15

Conservation

PhyloP100: 0.144
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS1
For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
KRASNM_004985.5 linkuse as main transcriptc.24A>G p.Val8Val synonymous_variant 2/5 ENST00000311936.8 NP_004976.2 P01116-2A0A024RAV5

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
KRASENST00000311936.8 linkuse as main transcriptc.24A>G p.Val8Val synonymous_variant 2/51 NM_004985.5 ENSP00000308495.3 P01116-2

Frequencies

GnomAD3 genomes
AF:
0.000230
AC:
35
AN:
152242
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000482
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000470
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.000245
AC:
61
AN:
248556
Hom.:
0
AF XY:
0.000238
AC XY:
32
AN XY:
134278
show subpopulations
Gnomad AFR exome
AF:
0.000125
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000508
Gnomad OTH exome
AF:
0.000329
GnomAD4 exome
AF:
0.000484
AC:
707
AN:
1460222
Hom.:
0
Cov.:
31
AF XY:
0.000435
AC XY:
316
AN XY:
726306
show subpopulations
Gnomad4 AFR exome
AF:
0.0000896
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.0000187
Gnomad4 NFE exome
AF:
0.000612
Gnomad4 OTH exome
AF:
0.000365
GnomAD4 genome
AF:
0.000230
AC:
35
AN:
152242
Hom.:
0
Cov.:
32
AF XY:
0.000202
AC XY:
15
AN XY:
74380
show subpopulations
Gnomad4 AFR
AF:
0.0000482
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000470
Gnomad4 OTH
AF:
0.000478
Alfa
AF:
0.000507
Hom.:
0
Bravo
AF:
0.000230

ClinVar

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

Submissions by phenotype

not provided Benign:7
Likely benign, no assertion criteria providedclinical testingDepartment of Pathology and Laboratory Medicine, Sinai Health System-- -
Likely benign, criteria provided, single submitterclinical testingARUP Laboratories, Molecular Genetics and Genomics, ARUP LaboratoriesOct 19, 2023- -
Likely benign, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenOct 01, 2022KRAS: BP4, BP7 -
Likely benign, no assertion criteria providedclinical testingGenome Diagnostics Laboratory, University Medical Center Utrecht-- -
Likely benign, no assertion criteria providedclinical testingClinical Genetics, Academic Medical Center-- -
Likely benign, no assertion criteria providedclinical testingJoint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+-- -
Likely benign, no assertion criteria providedclinical testingClinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center-- -
not specified Benign:4
Likely benign, criteria provided, single submitterclinical testingLaboratory for Molecular Medicine, Mass General Brigham Personalized MedicineFeb 24, 2010- -
Benign, criteria provided, single submitterclinical testingWomen's Health and Genetics/Laboratory Corporation of America, LabCorpDec 23, 2019- -
Likely benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
Benign, criteria provided, single submitterclinical testingGeneDxMay 23, 2014This 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
Likely benign, reviewed by expert panelcurationClinGen RASopathy Variant Curation Expert PanelApr 18, 2017The filtering allele frequency of the c.24A>G (p.Val8=) variant in the KRAS gene is 0.0499% (35/51828) of European chromosomes by the Exome Aggregation Consortium, which is a high enough frequency to be classified as likely benign based on thresholds defined by the ClinGen RASopathy Expert Panel (BS1; PMID:29493581) -
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 21, 2024- -
Malignant tumor of urinary bladder;C0023467:Acute myeloid leukemia;C0024623:Gastric cancer;C0235974:Carcinoma of pancreas;C0242379:Lung cancer;C0346153:Familial cancer of breast;C0917804:Cerebral arteriovenous malformation;C1838329:Toriello-Lacassie-Droste syndrome;C1860991:Noonan syndrome 3;C2674723:Autoimmune lymphoproliferative syndrome type 4;C3809005:Cardiofaciocutaneous syndrome 2;C4552097:Linear nevus sebaceous syndrome Benign:1
Likely benign, criteria provided, single submitterclinical testingFulgent Genetics, Fulgent GeneticsAug 26, 2021- -
Cardiovascular phenotype Benign:1
Benign, criteria provided, single submitterclinical testingAmbry GeneticsDec 30, 2021This alteration is classified as benign based on a combination of the following: 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
-0.46
CADD
Benign
9.2
DANN
Benign
0.75
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.6

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: rs147406419; hg19: chr12-25398295; COSMIC: COSV55544412; API