1-6425050-G-A

Position:

chr1-6425050-G-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 0P and 3B. BP4_ModerateBS1_Supporting

The NM_031475.3(ESPN):c.95G>A(p.Arg32His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000565 in 1,469,266 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R32C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

ESPN
NM_031475.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 1.05

Variant links:

Genes affected

ESPN (HGNC:13281): (espin) This gene encodes a multifunctional actin-bundling protein. It plays a major role in regulating the organization, dimensions, dynamics, and signaling capacities of the actin filament-rich, microvillus-type specializations that mediate sensory transduction in various mechanosensory and chemosensory cells. Mutations in this gene are associated with autosomal recessive neurosensory deafness, and autosomal dominant sensorineural deafness without vestibular involvement. [provided by RefSeq, Nov 2009]

ESPN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.20571816).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000178 (27/152078) while in subpopulation AFR AF= 0.000602 (25/41540). AF 95% confidence interval is 0.000418. There are 0 homozygotes in gnomad4. There are 14 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ESPN	NM_031475.3 linkuse as main transcript	c.95G>A	p.Arg32His	missense_variant	1/13	ENST00000645284.1	NP_113663.2	B1AK53-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ESPN	ENST00000645284.1 linkuse as main transcript	c.95G>A	p.Arg32His	missense_variant	1/13		NM_031475.3	ENSP00000496593.1		B1AK53-1
ESPN	ENST00000636330.1 linkuse as main transcript	c.95G>A	p.Arg32His	missense_variant	1/11	5		ENSP00000490186.1		A0A1B0GUN9

Frequencies

GnomAD3 genomes

AF:

0.000165

AC:

AN:

151972

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000555

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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

GnomAD3 exomes

AF:

0.0000385

AC:

AN:

77940

Hom.:

AF XY:

0.0000223

AC XY:

AN XY:

44816

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000207

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

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

AF:

0.0000425

AC:

AN:

1317188

Hom.:

Cov.:

AF XY:

0.0000400

AC XY:

AN XY:

649366

show subpopulations

Gnomad4 AFR exome

AF:

0.000988

Gnomad4 AMR exome

AF:

0.000117

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:

9.53e-7

Gnomad4 OTH exome

AF:

0.000477

GnomAD4 genome

AF:

0.000178

AC:

AN:

152078

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.000602

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.000181

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Uncertain significance, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Jul 09, 2024	In silico analysis indicates that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jul 05, 2022	This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 32 of the ESPN protein (p.Arg32His). This variant is present in population databases (no rsID available, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with ESPN-related conditions. ClinVar contains an entry for this variant (Variation ID: 1373960). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.58

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.091

T;T;T

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Benign

0.44

LIST_S2

Benign

0.22

.;T;T

M_CAP

Uncertain

0.18

MetaRNN

Benign

0.21

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.2

M;.;M

MutationTaster

Benign

0.68

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

-2.0

.;.;N

REVEL

Benign

0.099

Sift

Benign

0.041

.;.;D

Sift4G

Uncertain

0.050

.;.;T

Polyphen

1.0

D;.;D

Vest4

0.061

MutPred

0.42

Loss of phosphorylation at S30 (P = 0.1006);Loss of phosphorylation at S30 (P = 0.1006);Loss of phosphorylation at S30 (P = 0.1006);

MVP

0.31

MPC

0.71

ClinPred

0.51

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.070

gMVP

0.24

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