Variant 17-41255407-T-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_030975.2(KRTAP9-9):c.22T>G(p.Cys8Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000566 in 1,589,060 control chromosomes in the GnomAD database, with no homozygous occurrence. 11/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000014 ( 0 hom., cov: 19)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

KRTAP9-9
NM_030975.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.73

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 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KRTAP9-9	NM_030975.2 linkuse as main transcript	c.22T>G	p.Cys8Gly	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.22T>G	p.Cys8Gly	missense_variant	1/1	6		ENSP00000377576.1		Q9BYP9-3

Frequencies

GnomAD3 genomes

AF:

0.0000144

AC:

AN:

138504

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000260

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000212

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000483

AC:

AN:

1450428

Hom.:

Cov.:

AF XY:

0.00000694

AC XY:

AN XY:

720052

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.00

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:

0.00000543

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000144

AC:

AN:

138632

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

66892

show subpopulations

Gnomad4 AFR

AF:

0.0000259

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000212

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000310

Hom.:

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

Apr 07, 2022

The c.22T>G (p.C8G) alteration is located in exon 1 (coding exon 1) of the KRTAP9-9 gene. This alteration results from a T to G substitution at nucleotide position 22, causing the cysteine (C) at amino acid position 8 to be replaced by a glycine (G). 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

-0.18

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Benign

0.91

Eigen

Benign

-0.10

Eigen_PC

Benign

-0.19

FATHMM_MKL

Benign

0.12

M_CAP

Benign

0.0027

MetaRNN

Uncertain

0.73

MetaSVM

Benign

-1.1

PrimateAI

Benign

0.23

PROVEAN

Pathogenic

-11

REVEL

Benign

0.14

Sift

Uncertain

0.020

Sift4G

Uncertain

0.010

Vest4

0.44

MutPred

0.72

Gain of relative solvent accessibility (P = 0.005);

MVP

0.14

MPC

0.040

ClinPred

0.80

GERP RS

2.6

gMVP

0.20

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