Genetic Variant KRTAP9-1:p.Arg231Leu (chr17-41190578-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001190460.1(KRTAP9-1):c.692G>T(p.Arg231Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000249 in 1,609,126 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

KRTAP9-1
NM_001190460.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.540

Variant links:

Genes affected

KRTAP9-1 (HGNC:18912): (keratin associated protein 9-1) Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

KRTAP9-1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.11559287).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRTAP9-1	NM_001190460.1 link	c.692G>T	p.Arg231Leu	missense_variant	Exon 1 of 1	ENST00000398470.1	NP_001177389.1	A8MXZ3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRTAP9-1	ENST00000398470.1 link	c.692G>T	p.Arg231Leu	missense_variant	Exon 1 of 1	6	NM_001190460.1	ENSP00000381488.1		A8MXZ3

Frequencies

GnomAD3 genomes

AF:

0.00000660

AC:

AN:

151566

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000209

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000416

AC:

AN:

240228

Hom.:

AF XY:

0.00

AC XY:

AN XY:

130286

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000335

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000206

AC:

AN:

1457560

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

724574

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000350

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000660

AC:

AN:

151566

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73982

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000209

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 27, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.692G>T (p.R231L) alteration is located in exon 1 (coding exon 1) of the KRTAP9-1 gene. This alteration results from a G to T substitution at nucleotide position 692, causing the arginine (R) at amino acid position 231 to be replaced by a leucine (L). 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

0.16

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.60

CADD

Benign

2.1

DANN

Benign

0.88

DEOGEN2

Benign

0.018

T;.;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.017

LIST_S2

Benign

0.042

T;T;T

M_CAP

Benign

0.0031

MetaRNN

Benign

0.12

T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Pathogenic

3.1

M;.;.

PrimateAI

Benign

0.17

PROVEAN

Uncertain

-2.5

D;.;.

REVEL

Benign

0.049

Sift

Benign

0.079

T;.;.

Sift4G

Benign

0.20

T;T;T

Vest4

0.084

MutPred

0.31

Gain of sheet (P = 0.0477);.;.;

MVP

0.14

MPC

0.032

ClinPred

0.15

GERP RS

-5.6

Varity_R

0.061

gMVP

0.070

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.19

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