Genetic Variant KRTAP2-1:p.Arg110Gln (chr17-41046939-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

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

The NM_001123387.1(KRTAP2-1):c.329G>A(p.Arg110Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

KRTAP2-1
NM_001123387.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.08

Variant links:

Genes affected

KRTAP2-1 (HGNC:16775): (keratin associated protein 2-1) Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

KRTAP2-1 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=0.2835998).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRTAP2-1	NM_001123387.1 link	c.329G>A	p.Arg110Gln	missense_variant	Exon 1 of 1	ENST00000391419.3	NP_001116859.1	Q9BYU5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRTAP2-1	ENST00000391419.3 link	c.329G>A	p.Arg110Gln	missense_variant	Exon 1 of 1	6	NM_001123387.1	ENSP00000375238.3		Q9BYU5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000700

AC:

AN:

142810

Hom.:

AF XY:

0.00

AC XY:

AN XY:

76894

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000930

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000143

AC:

AN:

1397526

Hom.:

Cov.:

AF XY:

0.00000145

AC XY:

AN XY:

689858

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000185

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 25, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.329G>A (p.R110Q) alteration is located in exon 1 (coding exon 1) of the KRTAP2-1 gene. This alteration results from a G to A substitution at nucleotide position 329, causing the arginine (R) at amino acid position 110 to be replaced by a glutamine (Q). 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

0.12

BayesDel_addAF

Benign

-0.033

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0045

Eigen

Uncertain

0.28

Eigen_PC

Uncertain

0.30

FATHMM_MKL

Benign

0.18

M_CAP

Benign

0.0020

MetaRNN

Benign

0.28

MetaSVM

Benign

-0.87

MutationAssessor

Uncertain

2.2

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-1.3

REVEL

Benign

0.15

Sift

Benign

0.26

Sift4G

Benign

0.35

Polyphen

1.0

Vest4

0.34

MutPred

0.60

Gain of sheet (P = 0.0221);

MVP

0.081

ClinPred

0.71

GERP RS

5.9

Varity_R

0.16

gMVP

0.048

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