8-101543303-C-G

Variant names:

Variant summary

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

The NM_024915.4(GRHL2):c.83C>G(p.Ala28Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000052 in 1,614,038 control chromosomes in the GnomAD database, including 1 homozygotes. 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: 32)

Exomes 𝑓: 0.000050 ( 1 hom. )

Consequence

GRHL2
NM_024915.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 7.91

Variant links:

Genes affected

GRHL2 (HGNC:2799): (grainyhead like transcription factor 2) The protein encoded by this gene is a transcription factor that can act as a homodimer or as a heterodimer with either GRHL1 or GRHL3. Defects in this gene are a cause of non-syndromic sensorineural deafness autosomal dominant type 28 (DFNA28).[provided by RefSeq, Mar 2009]

GRHL2 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=0.08176586).

BS1

Variant frequency is greater than expected in population eas. gnomad4_exome allele frequency = 0.0000499 (73/1461824) while in subpopulation EAS AF= 0.00068 (27/39700). AF 95% confidence interval is 0.00048. There are 1 homozygotes in gnomad4_exome. There are 33 alleles in male gnomad4_exome subpopulation. Median coverage is 31. 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 rank	MANE	Protein	UniProt
GRHL2	NM_024915.4 link	c.83C>G	p.Ala28Gly	missense_variant	Exon 2 of 16	ENST00000646743.1	NP_079191.2	Q6ISB3-1
GRHL2	NM_001330593.2 link	c.35C>G	p.Ala12Gly	missense_variant	Exon 2 of 16		NP_001317522.1	Q6ISB3-2B4DL28
GRHL2	XM_011517306.4 link	c.35C>G	p.Ala12Gly	missense_variant	Exon 2 of 16		XP_011515608.1	Q6ISB3-2
GRHL2	XM_011517307.4 link	c.83C>G	p.Ala28Gly	missense_variant	Exon 2 of 16		XP_011515609.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
GRHL2	ENST00000646743.1 link	c.83C>G	p.Ala28Gly	missense_variant	Exon 2 of 16		NM_024915.4	ENSP00000495564.1	Q6ISB3-1
GRHL2	ENST00000472106.2 link	n.411C>G		non_coding_transcript_exon_variant	Exon 2 of 2	1
GRHL2	ENST00000395927.1 link	c.35C>G	p.Ala12Gly	missense_variant	Exon 2 of 16	2		ENSP00000379260.1	Q6ISB3-2

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000770

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.000283

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000876

AC:

AN:

251232

Hom.:

AF XY:

0.0000810

AC XY:

AN XY:

135768

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000870

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.000185

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000499

AC:

AN:

1461824

Hom.:

Cov.:

AF XY:

0.0000454

AC XY:

AN XY:

727216

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000680

Gnomad4 SAS exome

AF:

0.0000927

Gnomad4 FIN exome

AF:

0.000356

Gnomad4 NFE exome

AF:

0.00000899

Gnomad4 OTH exome

AF:

0.000132

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74430

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000771

Gnomad4 SAS

AF:

0.000415

Gnomad4 FIN

AF:

0.000283

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000752

Hom.:

Bravo

AF:

0.0000831

ExAC

AF:

0.0000824

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Apr 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with glycine, which is neutral and non-polar, at codon 28 of the GRHL2 protein (p.Ala28Gly). This variant is present in population databases (rs561693958, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with GRHL2-related conditions. ClinVar contains an entry for this variant (Variation ID: 505366). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. 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. -

Jul 28, 2023

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

not specified

Uncertain:1

Nov 01, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Ala28Gly variant in GRHL2 has not been previously reported in individuals with hearing loss, but has been identified in 0.1% (7/8652) of East Asian chromo somes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs561693958). However, this frequency in the general population is not hi gh enough to rule out a pathogenic role. Computational prediction tools and cons ervation analyses suggest that this variant may not impact the protein, though t his information is not predictive enough to rule out pathogenicity. In summary, the clinical significance of the p.Ala28Gly variant is uncertain. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.31

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

T;T;.

Eigen

Uncertain

0.41

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.93

.;D;D

M_CAP

Benign

0.016

MetaRNN

Benign

0.082

T;T;T

MetaSVM

Benign

-0.90

MutationAssessor

Benign

1.9

M;M;.

PrimateAI

Uncertain

0.75

PROVEAN

Benign

-1.4

N;.;N

REVEL

Benign

0.24

Sift

Benign

0.14

T;.;T

Sift4G

Benign

0.26

T;.;T

Polyphen

0.0040

B;B;.

Vest4

0.55

MutPred

0.12

Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);.;

MVP

0.068

MPC

0.36

ClinPred

0.15

GERP RS

6.0

Varity_R

0.16

gMVP

0.38

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