Genetic Variant KRTAP24-1:p.Arg136Gln (chr21-30282526-C-T) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_001085455.3(KRTAP24-1):c.407G>A(p.Arg136Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000103 in 1,612,484 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

KRTAP24-1
NM_001085455.3 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -4.42

Variant links:

Genes affected

KRTAP24-1 (HGNC:33902): (keratin associated protein 24-1) Predicted to enable structural molecule activity. Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

KRTAP24-1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0063867867).

BP6

Variant 21-30282526-C-T is Benign according to our data. Variant chr21-30282526-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 3117007.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRTAP24-1	NM_001085455.3 link	c.407G>A	p.Arg136Gln	missense_variant	Exon 1 of 1	ENST00000340345.6	NP_001078924.1	Q3LI83

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRTAP24-1	ENST00000340345.6 link	c.407G>A	p.Arg136Gln	missense_variant	Exon 1 of 1	6	NM_001085455.3	ENSP00000339238.4		Q3LI83

Frequencies

GnomAD3 genomes

AF:

0.000132

AC:

AN:

152084

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00404

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000206

AC:

AN:

247876

Hom.:

AF XY:

0.000171

AC XY:

AN XY:

134464

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000291

Gnomad ASJ exome

AF:

0.00323

Gnomad EAS exome

AF:

0.000167

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000468

Gnomad NFE exome

AF:

0.0000267

Gnomad OTH exome

AF:

0.000334

GnomAD4 exome

AF:

0.000100

AC:

146

AN:

1460400

Hom.:

Cov.:

AF XY:

0.000102

AC XY:

AN XY:

726394

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000246

Gnomad4 ASJ exome

AF:

0.00308

Gnomad4 EAS exome

AF:

0.000151

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000225

Gnomad4 OTH exome

AF:

0.000348

GnomAD4 genome

AF:

0.000132

AC:

AN:

152084

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74280

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00404

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000429

Hom.:

Bravo

AF:

0.000144

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000238

AC:

ExAC

AF:

0.000182

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000119

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Feb 06, 2023

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely 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

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.63

BayesDel_noAF

Benign

-0.84

CADD

Benign

0.0010

DANN

Benign

0.34

DEOGEN2

Benign

0.00034

Eigen

Benign

-2.1

Eigen_PC

Benign

-2.2

FATHMM_MKL

Benign

0.0016

LIST_S2

Benign

0.36

M_CAP

Benign

0.0011

MetaRNN

Benign

0.0064

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.59

PrimateAI

Benign

0.18

PROVEAN

Benign

0.15

REVEL

Benign

0.0090

Sift

Benign

0.89

Sift4G

Benign

1.0

Polyphen

0.0010

Vest4

0.062

MVP

0.17

MPC

0.013

ClinPred

0.010

GERP RS

-9.6

Varity_R

0.015

gMVP

0.045

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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