12-51920831-C-TG

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PVS1_StrongPM2PP5

The NM_000020.3(ACVRL1):​c.1450delinsTG​(p.Arg484TrpfsTer10) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. R484R) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 31)

Consequence

ACVRL1
NM_000020.3 frameshift

Scores

Not classified

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 1.48
Variant links:
Genes affected
ACVRL1 (HGNC:175): (activin A receptor like type 1) This gene encodes a type I cell-surface receptor for the TGF-beta superfamily of ligands. It shares with other type I receptors a high degree of similarity in serine-threonine kinase subdomains, a glycine- and serine-rich region (called the GS domain) preceding the kinase domain, and a short C-terminal tail. The encoded protein, sometimes termed ALK1, shares similar domain structures with other closely related ALK or activin receptor-like kinase proteins that form a subfamily of receptor serine/threonine kinases. Mutations in this gene are associated with hemorrhagic telangiectasia type 2, also known as Rendu-Osler-Weber syndrome 2. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 13 pathogenic variants in the truncated region.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 12-51920831-C-TG is Pathogenic according to our data. Variant chr12-51920831-C-TG is described in ClinVar as [Pathogenic]. Clinvar id is 426038.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ACVRL1NM_000020.3 linkuse as main transcriptc.1450delinsTG p.Arg484TrpfsTer10 frameshift_variant 10/10 ENST00000388922.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ACVRL1ENST00000388922.9 linkuse as main transcriptc.1450delinsTG p.Arg484TrpfsTer10 frameshift_variant 10/101 NM_000020.3 P1

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD4 exome
Cov.:
35
GnomAD4 genome
Cov.:
31

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Pulmonary arterial hypertension related to hereditary hemorrhagic telangiectasia Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyRare Disease Genomics Group, St George's University of London-- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

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.

Other links and lift over

dbSNP: rs1085307427; hg19: chr12-52314615; API