Variant 17-41255627-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_030975.2(KRTAP9-9):c.242G>A(p.Cys81Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000133 in 1,611,148 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000047 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

KRTAP9-9
NM_030975.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.10

Variant links:

Genes affected

KRTAP9-9 (HGNC:16773): (keratin associated protein 9-9) 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. Alternative haplotypes of this gene are represented in the GRCh38 reference genome assembly. [provided by RefSeq, Dec 2015]

KRTAP9-9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.31029284).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KRTAP9-9	NM_030975.2 linkuse as main transcript	c.242G>A	p.Cys81Tyr	missense_variant	1/1		NP_112237.2	Q9BYP9-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KRTAP9-9	ENST00000394008.1 linkuse as main transcript	c.242G>A	p.Cys81Tyr	missense_variant	1/1	6		ENSP00000377576.1		Q9BYP9-3

Frequencies

GnomAD3 genomes

AF:

0.0000469

AC:

AN:

149376

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000669

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:

0.0000888

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000477

AC:

AN:

251422

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135888

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

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:

0.0000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000142

AC:

207

AN:

1461772

Hom.:

Cov.:

AF XY:

0.000138

AC XY:

100

AN XY:

727192

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000174

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.0000469

AC:

AN:

149376

Hom.:

Cov.:

AF XY:

0.0000137

AC XY:

AN XY:

72814

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000669

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000888

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.0000453

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000824

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

Feb 16, 2023

The c.242G>A (p.C81Y) alteration is located in exon 1 (coding exon 1) of the KRTAP9-9 gene. This alteration results from a G to A substitution at nucleotide position 242, causing the cysteine (C) at amino acid position 81 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

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.60

CADD

Benign

DANN

Benign

0.97

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.27

FATHMM_MKL

Benign

0.74

M_CAP

Benign

0.0022

MetaRNN

Benign

0.31

MetaSVM

Benign

-1.1

PrimateAI

Benign

0.35

PROVEAN

Pathogenic

-9.3

REVEL

Benign

0.14

Sift

Uncertain

0.029

Sift4G

Uncertain

0.028

Vest4

0.41

MVP

0.38

MPC

0.049

ClinPred

0.34

GERP RS

2.8

gMVP

0.15

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.

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