rs3738927

Variant names:

• chr2-157737548-A-G
• rs3738927
• NM_001111067.4:c.1513T>C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_001111067.4(ACVR1):​c.1513T>C​(p.Leu505Leu) variant causes a synonymous change. The variant allele was found at a frequency of 0.00369 in 1,614,030 control chromosomes in the GnomAD database, including 153 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.018 (76 hom., cov: 32)
  • Exomes 𝑓: 0.0022 (77 hom.)
• Consequence: ACVR1 NM_001111067.4 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: 3.78

Genes affected

ACVR1 (HGNC:171): (activin A receptor type 1) Activins are dimeric growth and differentiation factors which belong to the transforming growth factor-beta (TGF-beta) superfamily of structurally related signaling proteins. Activins signal through a heteromeric complex of receptor serine kinases which include at least two type I ( I and IB) and two type II (II and IIB) receptors. These receptors are all transmembrane proteins, composed of a ligand-binding extracellular domain with cysteine-rich region, a transmembrane domain, and a cytoplasmic domain with predicted serine/threonine specificity. Type I receptors are essential for signaling; and type II receptors are required for binding ligands and for expression of type I receptors. Type I and II receptors form a stable complex after ligand binding, resulting in phosphorylation of type I receptors by type II receptors. This gene encodes activin A type I receptor which signals a particular transcriptional response in concert with activin type II receptors. Mutations in this gene are associated with fibrodysplasia ossificans progressive. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.49).
• BP6: Variant 2-157737548-A-G is Benign according to our data. Variant chr2-157737548-A-G is described in ClinVar as [Benign]. Clinvar id is 331688.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-157737548-A-G is described in Lovd as [Benign].
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0588 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ACVR1	NM_001111067.4	c.1513T>C	p.Leu505Leu	synonymous_variant	Exon 11 of 11	ENST00000434821.7	NP_001104537.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ACVR1	ENST00000434821.7	c.1513T>C	p.Leu505Leu	synonymous_variant	Exon 11 of 11	1	NM_001111067.4	ENSP00000405004.1

Frequencies

GnomAD3 genomes AF: 0.0184 AC: 2792 AN: 152140 Hom.: 77 Cov.: 32

Gnomad AFR AF: 0.0610

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00792

Gnomad ASJ AF: 0.00115

Gnomad EAS AF: 0.0151

Gnomad SAS AF: 0.00124

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000368

Gnomad OTH AF: 0.0158

GnomAD3 exomes AF: 0.00594 AC: 1492 AN: 251158 Hom.: 46 AF XY: 0.00460 AC XY: 625 AN XY: 135740

Gnomad AFR exome AF: 0.0619

Gnomad AMR exome AF: 0.00263

Gnomad ASJ exome AF: 0.00149

Gnomad EAS exome AF: 0.0165

Gnomad SAS exome AF: 0.000719

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000299

Gnomad OTH exome AF: 0.00343

GnomAD4 exome AF: 0.00216 AC: 3164 AN: 1461772 Hom.: 77 Cov.: 31 AF XY: 0.00187 AC XY: 1357 AN XY: 727190

Gnomad4 AFR exome AF: 0.0599

Gnomad4 AMR exome AF: 0.00304

Gnomad4 ASJ exome AF: 0.00134

Gnomad4 EAS exome AF: 0.00862

Gnomad4 SAS exome AF: 0.000719

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000166

Gnomad4 OTH exome AF: 0.00590

GnomAD4 genome AF: 0.0184 AC: 2794 AN: 152258 Hom.: 76 Cov.: 32 AF XY: 0.0181 AC XY: 1344 AN XY: 74440

Gnomad4 AFR AF: 0.0608

Gnomad4 AMR AF: 0.00791

Gnomad4 ASJ AF: 0.00115

Gnomad4 EAS AF: 0.0149

Gnomad4 SAS AF: 0.00124

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000368

Gnomad4 OTH AF: 0.0161

Alfa AF: 0.00529 Hom.: 20

Bravo AF: 0.0200

Asia WGS AF: 0.00837 AC: 29 AN: 3478

EpiCase AF: 0.000436

EpiControl AF: 0.000296

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

May 04, 2021

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Progressive myositis ossificans Benign:2

Dec 05, 2021

Genome-Nilou Lab

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.49
CADD	Benign	7.9
DANN	Benign	0.78

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

Other links and lift over

dbSNP: rs3738927; hg19: chr2-158594060;