rs1085307405

Variant names:

• chr12-51913236-C-G
• rs1085307405
• NM_000020.3:c.199C>G

Your query was ambiguous. Multiple possible variants found:

• chr12-51913236-C-G
• chr12-51913236-C-T

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PM1 PM2 PM5 PP2 PP3_Moderate PP5_Moderate

The NM_000020.3(ACVRL1):​c.199C>G​(p.Arg67Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R67W) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ACVRL1 NM_000020.3 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: -0.147
• Publications: 1 publications found

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]

ACVRL1 Gene-Disease associations (from GenCC):

• telangiectasia, hereditary hemorrhagic, type 2

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• hereditary hemorrhagic telangiectasia

  Inheritance: AR, AD Classification: SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PM1: In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain in NM_000020.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr12-51913236-C-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 426010.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP2: Missense variant in the ACVRL1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 203 curated pathogenic missense variants (we use a threshold of 10). The gene has 24 curated benign missense variants. Gene score misZ: 2.4458 (below the threshold of 3.09). Trascript score misZ: 3.182 (above the threshold of 3.09). GenCC associations: The gene is linked to telangiectasia, hereditary hemorrhagic, type 2, hereditary hemorrhagic telangiectasia.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.847
• PP5: Variant 12-51913236-C-G is Pathogenic according to our data. Variant chr12-51913236-C-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 1163055.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000020.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ACVRL1	NM_000020.3	MANE Select	c.199C>G	p.Arg67Gly	missense	Exon 3 of 10	NP_000011.2	P37023
	ACVRL1	NM_001077401.2		c.199C>G	p.Arg67Gly	missense	Exon 2 of 9	NP_001070869.1	A0A0S2Z310
	ACVRL1	NM_001406487.1		c.199C>G	p.Arg67Gly	missense	Exon 4 of 11	NP_001393416.1	A0A0S2Z310

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ACVRL1	ENST00000388922.9	TSL:1 MANE Select	c.199C>G	p.Arg67Gly	missense	Exon 3 of 10	ENSP00000373574.4	P37023
	ACVRL1	ENST00000550683.5	TSL:1	c.241C>G	p.Arg81Gly	missense	Exon 2 of 9	ENSP00000447884.1	G3V1W8
	ACVRL1	ENST00000551576.6	TSL:1	c.199C>G	p.Arg67Gly	missense	Exon 4 of 11	ENSP00000455848.2	P37023

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Likely pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.68
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Benign	20
DANN	Benign	0.97
DEOGEN2	Uncertain	0.76	D
Eigen	Benign	-0.14
Eigen_PC	Benign	-0.16
FATHMM_MKL	Benign	0.44	N
LIST_S2	Benign	0.79	T
M_CAP	Pathogenic	0.37	D
MetaRNN	Pathogenic	0.85	D
MetaSVM	Uncertain	0.37	D
MutationAssessor	Benign	1.5	L
PhyloP100		-0.15
PrimateAI	Benign	0.38	T
PROVEAN	Pathogenic	-5.6	D
REVEL	Pathogenic	0.69
Sift	Uncertain	0.0040	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.73	P
Vest4		0.48
MutPred		0.83		Loss of methylation at R67 (P = 0.0435)
MVP		0.99
MPC		1.2
ClinPred		0.94	D
GERP RS		3.9
Varity_R		0.63
gMVP		0.90
Mutation Taster		=17/83	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1085307405; hg19: chr12-52307020;