Genetic Variant KRTAP5-7:p.Glu8Lys (chr11-71527322-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_001012503.2(KRTAP5-7):c.22G>A(p.Glu8Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000291 in 1,613,340 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E8G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

KRTAP5-7
NM_001012503.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0320

Variant links:

Genes affected

KRTAP5-7 (HGNC:23602): (keratin associated protein 5-7) Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

KRTAP5-7 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=0.021144629).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRTAP5-7	NM_001012503.2 link	c.22G>A	p.Glu8Lys	missense_variant	Exon 1 of 1	ENST00000398536.6	NP_001012521.1	Q6L8G8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRTAP5-7	ENST00000398536.6 link	c.22G>A	p.Glu8Lys	missense_variant	Exon 1 of 1	6	NM_001012503.2	ENSP00000417330.2		Q6L8G8

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000638

AC:

AN:

250688

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135760

show subpopulations

Gnomad AFR exome

AF:

0.0000634

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00109

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000287

AC:

AN:

1461188

Hom.:

Cov.:

AF XY:

0.0000248

AC XY:

AN XY:

726896

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.000918

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.00000809

Gnomad4 OTH exome

AF:

0.0000995

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152152

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74314

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000576

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000113

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.0000577

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 31, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.22G>A (p.E8K) alteration is located in exon 1 (coding exon 1) of the KRTAP5-7 gene. This alteration results from a G to A substitution at nucleotide position 22, causing the glutamic acid (E) at amino acid position 8 to be replaced by a lysine (K). 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

-0.46

BayesDel_noAF

Benign

-0.71

CADD

Benign

9.7

DANN

Uncertain

0.98

DEOGEN2

Benign

0.0014

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.72

FATHMM_MKL

Benign

0.14

LIST_S2

Benign

0.32

M_CAP

Benign

0.0014

MetaRNN

Benign

0.021

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.0

PROVEAN

Benign

-0.75

REVEL

Benign

0.043

Sift

Pathogenic

0.0

Sift4G

Benign

0.54

Polyphen

0.0020

Vest4

0.25

MutPred

0.20

Gain of methylation at E8 (P = 0.0071);

MVP

0.030

MPC

0.011

ClinPred

0.028

GERP RS

1.3

Varity_R

0.078

gMVP

0.045

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