Genetic Variant KRTAP2-1:p.Val87Ala (chr17-41047008-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001123387.1(KRTAP2-1):c.260T>C(p.Val87Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000724 in 152,012 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0 ( 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: 1.64

Publications

0 publications found

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:

ENSG00000306126 (HGNC:):

ENSG00000306126 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.1287303).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001123387.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KRTAP2-1	NM_001123387.1	MANE Select	c.260T>C	p.Val87Ala	missense	Exon 1 of 1	NP_001116859.1	Q9BYU5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
KRTAP2-1	ENST00000391419.3	TSL:6 MANE Select	c.260T>C	p.Val87Ala	missense	Exon 1 of 1	ENSP00000375238.3	Q9BYU5
ENSG00000306126	ENST00000815517.1		n.220-13291A>G		intron	N/A
ENSG00000306126	ENST00000815518.1		n.160-13291A>G		intron	N/A

Frequencies

GnomAD3 genomes

AF:

0.0000724

AC:

AN:

152012

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000266

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

1364150

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

673054

African (AFR)

AF:

0.00

AC:

AN:

31134

American (AMR)

AF:

0.00

AC:

AN:

35266

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24652

East Asian (EAS)

AF:

0.00

AC:

AN:

35562

South Asian (SAS)

AF:

0.00

AC:

AN:

77918

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33938

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4012

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1064698

Other (OTH)

AF:

0.00

AC:

AN:

56970

GnomAD4 genome

AF:

0.0000724

AC:

AN:

152012

Hom.:

Cov.:

AF XY:

0.0000674

AC XY:

AN XY:

74228

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.000266

AC:

AN:

41374

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4800

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67974

Other (OTH)

AF:

0.00

AC:

AN:

2092

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.270

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.42

BayesDel_addAF

Benign

-0.038

BayesDel_noAF

Benign

-0.29

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.010

Eigen

Benign

-0.029

Eigen_PC

Benign

0.11

FATHMM_MKL

Benign

0.32

M_CAP

Benign

0.0017

MetaRNN

Benign

0.13

MetaSVM

Benign

-0.94

MutationAssessor

Uncertain

2.5

PhyloP100

1.6

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-0.50

REVEL

Uncertain

0.29

Sift

Benign

0.11

Sift4G

Benign

0.35

Polyphen

0.14

Vest4

0.23

MutPred

0.39

Gain of loop (P = 0.0851)

MVP

0.061

ClinPred

0.41

GERP RS

5.8

PromoterAI

0.0031

Neutral

(source)

Varity_R

0.089

gMVP

0.049

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over