Genetic Variant KRTAP5-1:p.Ala224Val (chr11-1584579-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001005922.1(KRTAP5-1):c.671C>T(p.Ala224Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000228 in 1,613,646 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00030 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00022 ( 0 hom. )

Consequence

KRTAP5-1
NM_001005922.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.00200

Variant links:

Genes affected

KRTAP5-1 (HGNC:23596): (keratin associated protein 5-1) Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

KRTAP5-1 links:

KRTAP5-AS1 (HGNC:27877): (KRTAP5-1/KRTAP5-2 antisense RNA 1)

KRTAP5-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0072728395).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRTAP5-1	NM_001005922.1 link	c.671C>T	p.Ala224Val	missense_variant	Exon 1 of 1	ENST00000382171.2	NP_001005922.1	Q6L8H4
KRTAP5-AS1	NR_021489.2 link	n.328+11511G>A		intron_variant	Intron 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRTAP5-1	ENST00000382171.2 link	c.671C>T	p.Ala224Val	missense_variant	Exon 1 of 1	6	NM_001005922.1	ENSP00000371606.2		Q6L8H4

Frequencies

GnomAD3 genomes

AF:

0.000297

AC:

AN:

151770

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000267

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000525

Gnomad ASJ

AF:

0.00519

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000883

Gnomad OTH

AF:

0.000963

GnomAD3 exomes

AF:

0.000390

AC:

AN:

251366

Hom.:

AF XY:

0.000353

AC XY:

AN XY:

135858

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.000665

Gnomad ASJ exome

AF:

0.00417

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000211

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.000221

AC:

323

AN:

1461876

Hom.:

Cov.:

AF XY:

0.000217

AC XY:

158

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.000448

Gnomad4 AMR exome

AF:

0.000738

Gnomad4 ASJ exome

AF:

0.00555

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000374

Gnomad4 NFE exome

AF:

0.0000782

Gnomad4 OTH exome

AF:

0.000679

GnomAD4 genome

AF:

0.000297

AC:

AN:

151770

Hom.:

Cov.:

AF XY:

0.000243

AC XY:

AN XY:

74102

show subpopulations

Gnomad4 AFR

AF:

0.000267

Gnomad4 AMR

AF:

0.000525

Gnomad4 ASJ

AF:

0.00519

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000883

Gnomad4 OTH

AF:

0.000963

Alfa

AF:

0.000486

Hom.:

Bravo

AF:

0.000416

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000329

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000356

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 28, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.671C>T (p.A224V) alteration is located in exon 1 (coding exon 1) of the KRTAP5-1 gene. This alteration results from a C to T substitution at nucleotide position 671, causing the alanine (A) at amino acid position 224 to be replaced by a valine (V). 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

-0.57

BayesDel_noAF

Benign

-0.69

CADD

Benign

4.2

DANN

Benign

0.86

DEOGEN2

Benign

0.016

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.0067

M_CAP

Benign

0.0010

MetaRNN

Benign

0.0073

MetaSVM

Benign

-0.90

MutationAssessor

Benign

-1.0

PROVEAN

Benign

-0.63

REVEL

Benign

0.050

Sift

Pathogenic

0.0

Sift4G

Benign

0.49

Polyphen

0.68

Vest4

0.14

MVP

0.11

MPC

0.041

ClinPred

0.013

GERP RS

1.4

Varity_R

0.051

gMVP

0.0093

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