Variant 17-41149599-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_033188.4(KRTAP4-5):c.169C>T(p.His57Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000626 in 1,598,626 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

KRTAP4-5
NM_033188.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.05

Variant links:

Genes affected

KRTAP4-5 (HGNC:18899): (keratin associated protein 4-5) This protein is a member of the keratin-associated protein (KAP) family. The KAP proteins form a matrix of keratin intermediate filaments which contribute to the structure of hair fibers. KAP family members appear to have unique, family-specific amino- and carboxyl-terminal regions and are subdivided into three multi-gene families according to amino acid composition: the high sulfur, the ultrahigh sulfur, and the high tyrosine/glycine KAPs. This protein is a member of the ultrahigh sulfur KAP family and the gene is localized to a cluster of KAPs at 17q12-q21. [provided by RefSeq, Jul 2008]

KRTAP4-5 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06492838).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KRTAP4-5	NM_033188.4 linkuse as main transcript	c.169C>T	p.His57Tyr	missense_variant	1/1	ENST00000343246.6	NP_149445.3	Q9BYR2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KRTAP4-5	ENST00000343246.6 linkuse as main transcript	c.169C>T	p.His57Tyr	missense_variant	1/1	6	NM_033188.4	ENSP00000340546.4		Q9BYR2

Frequencies

GnomAD3 genomes

AF:

0.0000461

AC:

AN:

151696

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000328

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:

0.00

Gnomad OTH

AF:

0.000960

GnomAD3 exomes

AF:

0.0000121

AC:

AN:

248898

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135174

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.00000890

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.00000207

AC:

AN:

1446930

Hom.:

Cov.:

147

AF XY:

0.00000139

AC XY:

AN XY:

719618

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000699

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000461

AC:

AN:

151696

Hom.:

Cov.:

AF XY:

0.0000540

AC XY:

AN XY:

74046

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000328

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000960

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.000144

ExAC

AF:

0.00000825

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 08, 2024

The c.169C>T (p.H57Y) alteration is located in exon 1 (coding exon 1) of the KRTAP4-5 gene. This alteration results from a C to T substitution at nucleotide position 169, causing the histidine (H) at amino acid position 57 to be replaced by a tyrosine (Y). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.63

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.0044

Eigen

Benign

-0.89

Eigen_PC

Benign

-0.90

FATHMM_MKL

Benign

0.066

LIST_S2

Benign

0.040

M_CAP

Benign

0.0028

MetaRNN

Benign

0.065

MetaSVM

Benign

-0.91

MutationAssessor

Benign

2.0

PROVEAN

Benign

-1.8

REVEL

Benign

0.036

Sift

Uncertain

0.0030

Sift4G

Benign

0.14

Polyphen

0.14

Vest4

0.11

MutPred

0.36

Loss of loop (P = 0.1242);

MVP

0.067

MPC

0.16

ClinPred

0.071

GERP RS

0.59

Varity_R

0.16

gMVP

0.028

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