2-157806765-C-T

Position:

• chr2-157806765-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001111067.4(ACVR1):​c.-7-7265G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0528 in 152,240 control chromosomes in the GnomAD database, including 305 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.053 (305 hom., cov: 31)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ACVR1 NM_001111067.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.140

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 -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.64).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0801 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ACVR1	NM_001111067.4	c.-7-7265G>A		intron_variant		ENST00000434821.7	NP_001104537.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ACVR1	ENST00000434821.7	c.-7-7265G>A		intron_variant		1	NM_001111067.4	ENSP00000405004.1

Frequencies

GnomAD3 genomes AF: 0.0529 AC: 8043 AN: 152122 Hom.: 306 Cov.: 31

Gnomad AFR AF: 0.0153

Gnomad AMI AF: 0.0340

Gnomad AMR AF: 0.0503

Gnomad ASJ AF: 0.0164

Gnomad EAS AF: 0.000770

Gnomad SAS AF: 0.0126

Gnomad FIN AF: 0.0776

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.0819

Gnomad OTH AF: 0.0464

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 2 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 2

Gnomad4 NFE exome AF: 0.00

GnomAD4 genome AF: 0.0528 AC: 8042 AN: 152240 Hom.: 305 Cov.: 31 AF XY: 0.0508 AC XY: 3780 AN XY: 74430

Gnomad4 AFR AF: 0.0153

Gnomad4 AMR AF: 0.0502

Gnomad4 ASJ AF: 0.0164

Gnomad4 EAS AF: 0.000771

Gnomad4 SAS AF: 0.0126

Gnomad4 FIN AF: 0.0776

Gnomad4 NFE AF: 0.0819

Gnomad4 OTH AF: 0.0459

Alfa AF: 0.0659 Hom.: 255

Bravo AF: 0.0492

Asia WGS AF: 0.00895 AC: 31 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.64
CADD	Benign	15
DANN	Benign	0.83

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: rs17798043; hg19: chr2-158663277;