rs727504674

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001318895.3(FHL2):c.512C>T(p.Thr171Met) variant causes a missense change. The variant allele was found at a frequency of 0.000148 in 1,608,320 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 (★★). Synonymous variant affecting the same amino acid position (i.e. T171T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

FHL2
NM_001318895.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 4.00

Variant links:

Genes affected

FHL2 (HGNC:3703): (four and a half LIM domains 2) This gene encodes a member of the four-and-a-half-LIM-only protein family. Family members contain two highly conserved, tandemly arranged, zinc finger domains with four highly conserved cysteines binding a zinc atom in each zinc finger. This protein is thought to have a role in the assembly of extracellular membranes. Also, this gene is down-regulated during transformation of normal myoblasts to rhabdomyosarcoma cells and the encoded protein may function as a link between presenilin-2 and an intracellular signaling pathway. Multiple alternatively spliced variants encoding different isoforms have been identified. [provided by RefSeq, Jan 2016]

FHL2 links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.2187497).

BS2

High AC in GnomAd at 18 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FHL2	NM_001318895.3 linkuse as main transcript	c.512C>T	p.Thr171Met	missense_variant	6/7	ENST00000530340.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FHL2	ENST00000530340.6 linkuse as main transcript	c.512C>T	p.Thr171Met	missense_variant	6/7	1	NM_001318895.3	P1	Q14192-1
	ENST00000457290.2 linkuse as main transcript	n.40+384G>A		intron_variant, non_coding_transcript_variant		1

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

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:

0.000176

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000633

AC:

AN:

236880

Hom.:

AF XY:

0.0000391

AC XY:

AN XY:

127850

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000211

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000345

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000659

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000151

AC:

220

AN:

1456090

Hom.:

Cov.:

AF XY:

0.000144

AC XY:

104

AN XY:

723692

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000183

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000235

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000186

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

AF:

0.000118

AC:

AN:

152230

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74380

show subpopulations

Gnomad4 AFR

AF:

0.0000965

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:

0.000176

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000727

Hom.:

Bravo

AF:

0.0000604

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000494

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Aug 02, 2013

The Thr171Met variant in FHL2 has not been reported in individuals with cardiomy opathy. Data from large population studies is insufficient to assess the frequen cy of this variant. Threonine (Thr) is not well conserved in evolution and 1 mam malian species carries the variant amino acid (Met), raising the possibility tha t this change may be tolerated. Additional computational analyses (biochemical a mino acid properties, AlignGVGD, PolyPhen2, and SIFT) suggest that this variant may impact the protein, though this information is not predictive enough to dete rmine pathogenicity. Additional information is needed to fully assess the clinic al significance of this variant. -

Primary dilated cardiomyopathy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jan 29, 2024

This sequence change replaces threonine, which is neutral and polar, with methionine, which is neutral and non-polar, at codon 171 of the FHL2 protein (p.Thr171Met). This variant is present in population databases (rs727504674, gnomAD 0.02%). This missense change has been observed in individual(s) with hypertrophic cardiomyopathy (PMID: 25358972). ClinVar contains an entry for this variant (Variation ID: 179156). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt FHL2 protein function with a negative predictive value of 80%. Experimental studies have shown that this missense change affects FHL2 function (PMID: 25358972). 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

0.099

BayesDel_addAF

Uncertain

0.070

BayesDel_noAF

Benign

-0.24

Cadd

Uncertain

Dann

Uncertain

1.0

Eigen

Benign

0.028

Eigen_PC

Benign

0.019

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.56

M_CAP

Uncertain

0.27

MetaRNN

Benign

0.22

MetaSVM

Uncertain

-0.18

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D;N

PROVEAN

Pathogenic

-6.5

Sift

Pathogenic

0.0

Vest4

0.22

MVP

0.97

ClinPred

0.28

GERP RS

2.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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