Genetic Variant FHL2:p.Arg131Ser (chr2-105367680-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001318895.3(FHL2):c.391C>A(p.Arg131Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000656 in 152,332 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R131H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Consequence

FHL2
NM_001318895.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.79

Publications

7 publications found

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:

ENSG00000238273 (HGNC:):

ENSG00000238273 links:

C2orf49 (HGNC:28772): (chromosome 2 open reading frame 49) Predicted to be involved in embryonic morphogenesis. Located in nucleus. Part of tRNA-splicing ligase complex. [provided by Alliance of Genome Resources, Apr 2022]

C2orf49 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FHL2	NM_001318895.3 link	c.391C>A	p.Arg131Ser	missense_variant	Exon 5 of 7	ENST00000530340.6	NP_001305824.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FHL2	ENST00000530340.6 link	c.391C>A	p.Arg131Ser	missense_variant	Exon 5 of 7	1	NM_001318895.3	ENSP00000433567.2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152214

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251320

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000656

AC:

AN:

152332

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74490

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

41574

American (AMR)

AF:

0.00

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68024

Other (OTH)

AF:

0.00

AC:

AN:

2116

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.46

BayesDel_addAF

Uncertain

0.088

BayesDel_noAF

Benign

-0.11

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.26

.;.;T;T;T;T;T

Eigen

Benign

-0.20

Eigen_PC

Benign

0.045

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.88

.;.;.;.;.;.;D

M_CAP

Benign

0.044

MetaRNN

Uncertain

0.48

T;T;T;T;T;T;T

MetaSVM

Benign

-0.34

MutationAssessor

Benign

0.18

.;.;N;N;N;N;N

PhyloP100

3.8

PrimateAI

Benign

0.44

PROVEAN

Benign

0.53

.;N;N;N;N;N;N

REVEL

Uncertain

0.40

Sift

Benign

0.41

.;T;T;T;T;T;T

Sift4G

Benign

0.68

T;T;T;T;T;T;T

Polyphen

0.0060

.;.;B;B;B;B;B

Vest4

0.60

MutPred

0.38

.;.;Gain of disorder (P = 0.089);Gain of disorder (P = 0.089);Gain of disorder (P = 0.089);Gain of disorder (P = 0.089);Gain of disorder (P = 0.089);

MVP

0.96

ClinPred

0.29

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.1

Varity_R

0.21

Mutation Taster

=47/53

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over