4-173529000-G-C

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_021973.3(HAND2):c.290C>G(p.Pro97Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000472 in 1,609,850 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000048 ( 0 hom. )

Consequence

HAND2
NM_021973.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.95

Variant links:

Genes affected

HAND2 (HGNC:4808): (heart and neural crest derivatives expressed 2) The protein encoded by this gene belongs to the basic helix-loop-helix family of transcription factors. This gene product is one of two closely related family members, the HAND proteins, which are asymmetrically expressed in the developing ventricular chambers and play an essential role in cardiac morphogenesis. Working in a complementary fashion, they function in the formation of the right ventricle and aortic arch arteries, implicating them as mediators of congenital heart disease. In addition, this transcription factor plays an important role in limb and branchial arch development. [provided by RefSeq, Jul 2008]

HAND2 links:

HAND2-AS1 (HGNC:48872): (HAND2 antisense RNA 1) Predicted to be involved in positive regulation of gene expression. Predicted to act upstream of or within with a positive effect on cardiac right ventricle morphogenesis. Predicted to act upstream of or within transcription elongation from RNA polymerase II promoter. Predicted to be located in chromatin; cytoplasm; and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

HAND2-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HAND2	NM_021973.3 link	c.290C>G	p.Pro97Arg	missense_variant	Exon 1 of 2	ENST00000359562.4	NP_068808.1	P61296-1
HAND2-AS1	NR_136197.1 link	n.240+161G>C		intron_variant	Intron 1 of 3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HAND2	ENST00000359562.4 link	c.290C>G	p.Pro97Arg	missense_variant	Exon 1 of 2	1	NM_021973.3	ENSP00000352565.4		P61296-1

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

151962

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000294

AC:

AN:

238440

Hom.:

AF XY:

0.0000307

AC XY:

AN XY:

130222

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000117

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:

0.0000192

Gnomad OTH exome

AF:

0.000171

GnomAD4 exome

AF:

0.0000480

AC:

AN:

1457888

Hom.:

Cov.:

AF XY:

0.0000510

AC XY:

AN XY:

724882

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000135

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000177

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000486

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.0000395

AC:

AN:

151962

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74222

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000283

Hom.:

Bravo

AF:

0.0000529

ExAC

AF:

0.00000829

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Feb 09, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces proline, which is neutral and non-polar, with arginine, which is basic and polar, at codon 97 of the HAND2 protein (p.Pro97Arg). This variant is present in population databases (rs751803965, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with HAND2-related conditions. ClinVar contains an entry for this variant (Variation ID: 2629477). 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. -

HAND2-related disorder

Uncertain:1

Mar 07, 2023

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The HAND2 c.290C>G variant is predicted to result in the amino acid substitution p.Pro97Arg. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.012% of alleles in individuals of Latino descent in gnomAD (http://gnomad.broadinstitute.org/variant/4-174450151-G-C). Although we suspect that this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.61

BayesDel_addAF

Benign

-0.0081

BayesDel_noAF

Uncertain

-0.020

CADD

Uncertain

DANN

Benign

0.69

DEOGEN2

Uncertain

0.43

Eigen

Benign

-0.16

Eigen_PC

Benign

-0.082

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.74

M_CAP

Pathogenic

0.84

MetaRNN

Uncertain

0.49

MetaSVM

Uncertain

0.37

MutationAssessor

Benign

1.2

PrimateAI

Pathogenic

0.93

PROVEAN

Benign

-1.5

REVEL

Uncertain

0.48

Sift

Benign

0.28

Sift4G

Benign

0.46

Polyphen

0.64

Vest4

0.45

MutPred

0.22

Gain of MoRF binding (P = 0.0138);

MVP

0.95

MPC

1.2

ClinPred

0.11

GERP RS

4.0

Varity_R

0.13

gMVP

0.55

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