Genetic Variant KRTAP4-11:p.Arg101His (chr17-41118014-C-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_033059.4(KRTAP4-11):c.302G>A(p.Arg101His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000059 in 1,390,144 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R101C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00025 ( 1 hom., cov: 25)

Exomes 𝑓: 0.000044 ( 2 hom. )

Consequence

KRTAP4-11
NM_033059.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.666

Variant links:

Genes affected

KRTAP4-11 (HGNC:18911): (keratin associated protein 4-11) This protein is a member of the keratin-associated protein (KAP) family. The KAP proteins form a matrix of keratin intermediate filaments which contribute to the structure of hair fibers. KAP family members appear to have unique, family-specific amino- and carboxyl-terminal regions and are subdivided into three multi-gene families according to amino acid composition: the high sulfur, the ultrahigh sulfur, and the high tyrosine/glycine KAPs. This protein is a member of the ultrahigh sulfur KAP family and the gene is localized to a cluster of KAPs at 17q12-q21. [provided by RefSeq, Mar 2009]

KRTAP4-11 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.029470354).

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRTAP4-11	NM_033059.4 link	c.302G>A	p.Arg101His	missense_variant	Exon 1 of 1	ENST00000391413.4	NP_149048.2	Q9BYQ6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRTAP4-11	ENST00000391413.4 link	c.302G>A	p.Arg101His	missense_variant	Exon 1 of 1	6	NM_033059.4	ENSP00000375232.2		Q9BYQ6

Frequencies

GnomAD3 genomes

AF:

0.000251

AC:

AN:

99456

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000967

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:

0.0000604

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000449

AC:

AN:

244858

Hom.:

AF XY:

0.0000300

AC XY:

AN XY:

133516

show subpopulations

Gnomad AFR exome

AF:

0.000352

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000657

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000358

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000442

AC:

AN:

1290688

Hom.:

Cov.:

197

AF XY:

0.0000456

AC XY:

AN XY:

635724

show subpopulations

Gnomad4 AFR exome

AF:

0.000673

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000299

Gnomad4 SAS exome

AF:

0.000154

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000158

Gnomad4 OTH exome

AF:

0.0000586

GnomAD4 genome

AF:

0.000251

AC:

AN:

99456

Hom.:

Cov.:

AF XY:

0.000230

AC XY:

AN XY:

47772

show subpopulations

Gnomad4 AFR

AF:

0.000967

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:

0.0000604

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00877

Hom.:

ExAC

AF:

0.000102

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 23, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.302G>A (p.R101H) alteration is located in exon 1 (coding exon 1) of the KRTAP4-11 gene. This alteration results from a G to A substitution at nucleotide position 302, causing the arginine (R) at amino acid position 101 to be replaced by a histidine (H). 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

0.11

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.62

CADD

Benign

DANN

Benign

0.83

DEOGEN2

Benign

0.15

Eigen

Benign

-0.94

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.038

LIST_S2

Benign

0.090

M_CAP

Benign

0.0096

MetaRNN

Benign

0.029

MetaSVM

Benign

-0.88

MutationAssessor

Uncertain

2.0

PrimateAI

Benign

0.18

PROVEAN

Uncertain

-3.4

REVEL

Benign

0.035

Sift

Benign

0.12

Sift4G

Benign

0.10

Polyphen

0.013

Vest4

0.054

MVP

0.072

MPC

0.0084

ClinPred

0.026

GERP RS

2.0

Varity_R

0.074

gMVP

0.055

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