Genetic Variant KRTAP9-1:p.Arg216Cys (chr17-41190532-C-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.646C>T(p.Arg216Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000404 in 1,609,446 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

KRTAP9-1
NM_001190460.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.16

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=0.07804459).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRTAP9-1	NM_001190460.1 link	c.646C>T	p.Arg216Cys	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.646C>T	p.Arg216Cys	missense_variant	Exon 1 of 1	6	NM_001190460.1	ENSP00000381488.1		A8MXZ3

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151250

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000243

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000295

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000165

AC:

AN:

242900

Hom.:

AF XY:

0.0000152

AC XY:

AN XY:

131458

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000595

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:

0.0000183

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000425

AC:

AN:

1458196

Hom.:

Cov.:

AF XY:

0.0000386

AC XY:

AN XY:

724926

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000684

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:

0.0000513

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151250

Hom.:

Cov.:

AF XY:

0.0000271

AC XY:

AN XY:

73838

show subpopulations

Gnomad4 AFR

AF:

0.0000243

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000295

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000386

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 27, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.646C>T (p.R216C) alteration is located in exon 1 (coding exon 1) of the KRTAP9-1 gene. This alteration results from a C to T substitution at nucleotide position 646, causing the arginine (R) at amino acid position 216 to be replaced by a cysteine (C). 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

0.14

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.73

CADD

Benign

7.5

DANN

Benign

0.89

DEOGEN2

Benign

0.016

T;.;.

Eigen

Benign

-0.69

Eigen_PC

Benign

-0.91

FATHMM_MKL

Benign

0.0054

LIST_S2

Benign

0.12

T;T;T

M_CAP

Benign

0.0011

MetaRNN

Benign

0.078

T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.7

L;.;.

PrimateAI

Benign

0.17

PROVEAN

Benign

-1.9

N;.;.

REVEL

Benign

0.028

Sift

Uncertain

0.0060

D;.;.

Sift4G

Uncertain

0.010

D;D;T

Vest4

0.077

MutPred

0.23

Loss of phosphorylation at T218 (P = 0.0917);.;.;

MVP

0.21

MPC

0.034

ClinPred

0.17

GERP RS

-0.25

Varity_R

0.081

gMVP

0.11

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