4-54727315-A-G

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000222.3(KIT):c.1638A>G(p.Lys546Lys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0271 in 1,613,900 control chromosomes in the GnomAD database, including 716 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.023 ( 54 hom., cov: 33)

Exomes 𝑓: 0.027 ( 662 hom. )

Consequence

KIT
NM_000222.3 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:11

Conservation

PhyloP100: 1.77

Variant links:

Genes affected

KIT (HGNC:6342): (KIT proto-oncogene, receptor tyrosine kinase) This gene encodes a receptor tyrosine kinase. This gene was initially identified as a homolog of the feline sarcoma viral oncogene v-kit and is often referred to as proto-oncogene c-Kit. The canonical form of this glycosylated transmembrane protein has an N-terminal extracellular region with five immunoglobulin-like domains, a transmembrane region, and an intracellular tyrosine kinase domain at the C-terminus. Upon activation by its cytokine ligand, stem cell factor (SCF), this protein phosphorylates multiple intracellular proteins that play a role in in the proliferation, differentiation, migration and apoptosis of many cell types and thereby plays an important role in hematopoiesis, stem cell maintenance, gametogenesis, melanogenesis, and in mast cell development, migration and function. This protein can be a membrane-bound or soluble protein. Mutations in this gene are associated with gastrointestinal stromal tumors, mast cell disease, acute myelogenous leukemia, and piebaldism. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2020]

KIT links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.59).

BP6

Variant 4-54727315-A-G is Benign according to our data. Variant chr4-54727315-A-G is described in ClinVar as [Benign]. Clinvar id is 255569.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr4-54727315-A-G is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=1.77 with no splicing effect.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0233 (3548/152338) while in subpopulation EAS AF= 0.0487 (253/5190). AF 95% confidence interval is 0.0438. There are 54 homozygotes in gnomad4. There are 1723 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 3548 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIT	NM_000222.3 link	c.1638A>G	p.Lys546Lys	synonymous_variant	Exon 10 of 21	ENST00000288135.6	NP_000213.1	P10721-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIT	ENST00000288135.6 link	c.1638A>G	p.Lys546Lys	synonymous_variant	Exon 10 of 21	1	NM_000222.3	ENSP00000288135.6		P10721-1

Frequencies

GnomAD3 genomes

AF:

0.0233

AC:

3549

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00523

Gnomad AMI

AF:

0.0625

Gnomad AMR

AF:

0.0182

Gnomad ASJ

AF:

0.0755

Gnomad EAS

AF:

0.0484

Gnomad SAS

AF:

0.0333

Gnomad FIN

AF:

0.0163

Gnomad MID

AF:

0.0190

Gnomad NFE

AF:

0.0307

Gnomad OTH

AF:

0.0272

GnomAD3 exomes

AF:

0.0275

AC:

6895

AN:

251176

Hom.:

140

AF XY:

0.0286

AC XY:

3883

AN XY:

135744

show subpopulations

Gnomad AFR exome

AF:

0.00547

Gnomad AMR exome

AF:

0.00900

Gnomad ASJ exome

AF:

0.0669

Gnomad EAS exome

AF:

0.0492

Gnomad SAS exome

AF:

0.0328

Gnomad FIN exome

AF:

0.0181

Gnomad NFE exome

AF:

0.0295

Gnomad OTH exome

AF:

0.0283

GnomAD4 exome

AF:

0.0275

AC:

40150

AN:

1461562

Hom.:

662

Cov.:

AF XY:

0.0282

AC XY:

20537

AN XY:

727090

show subpopulations

Gnomad4 AFR exome

AF:

0.00370

Gnomad4 AMR exome

AF:

0.0102

Gnomad4 ASJ exome

AF:

0.0681

Gnomad4 EAS exome

AF:

0.0392

Gnomad4 SAS exome

AF:

0.0332

Gnomad4 FIN exome

AF:

0.0175

Gnomad4 NFE exome

AF:

0.0275

Gnomad4 OTH exome

AF:

0.0282

GnomAD4 genome

AF:

0.0233

AC:

3548

AN:

152338

Hom.:

Cov.:

AF XY:

0.0231

AC XY:

1723

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.00519

Gnomad4 AMR

AF:

0.0182

Gnomad4 ASJ

AF:

0.0755

Gnomad4 EAS

AF:

0.0487

Gnomad4 SAS

AF:

0.0330

Gnomad4 FIN

AF:

0.0163

Gnomad4 NFE

AF:

0.0307

Gnomad4 OTH

AF:

0.0279

Alfa

AF:

0.0305

Hom.:

Bravo

AF:

0.0227

Asia WGS

AF:

0.0460

AC:

160

AN:

3478

EpiCase

AF:

0.0326

EpiControl

AF:

0.0281

ClinVar

Significance: Benign

Submissions summary: Benign:11

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Genome Diagnostics Laboratory, Amsterdam University Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Gastrointestinal stromal tumor

Benign:3

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Jul 07, 2023

KCCC/NGS Laboratory, Kuwait Cancer Control Center

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Benign:2

Aug 01, 2019

GeneDx

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

- -

Mastocytosis

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Piebaldism

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Hereditary cancer-predisposing syndrome

Benign:1

May 08, 2019

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

-0.59

CADD

Benign

6.3

DANN

Benign

0.42

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over