chr12-51907649-G-A

Variant names:

• chr12-51907649-G-A
• rs573048639
• NM_000020.3:c.-52G>A

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Strong BP6 BS1

The NM_000020.3(ACVRL1):​c.-52G>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00386 in 152,164 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.0039 (1 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ACVRL1 NM_000020.3 5_prime_UTR
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:2
• Conservation: PhyloP100: -0.519
• Publications: 0 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: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.73).
• BP6: Variant 12-51907649-G-A is Benign according to our data. Variant chr12-51907649-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 309439.
• BS1: Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00386 (587/152164) while in subpopulation NFE AF = 0.00594 (404/67960). AF 95% confidence interval is 0.00547. There are 1 homozygotes in GnomAd4. There are 267 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

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.-52G>A		5_prime_UTR	Exon 1 of 10	NP_000011.2	P37023
	ACVRL1	NM_001406487.1		c.-52G>A		5_prime_UTR	Exon 2 of 11	NP_001393416.1	A0A0S2Z310
	ACVRL1	NM_001406488.1		c.-52G>A		5_prime_UTR	Exon 1 of 9	NP_001393417.1	H3BTZ2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ACVRL1	ENST00000388922.9	TSL:1 MANE Select	c.-52G>A		5_prime_UTR	Exon 1 of 10	ENSP00000373574.4	P37023
	ACVRL1	ENST00000551576.6	TSL:1	c.-52G>A		5_prime_UTR	Exon 2 of 11	ENSP00000455848.2	P37023
	ACVRL1	ENST00000910202.1		c.-52G>A		5_prime_UTR	Exon 1 of 11	ENSP00000580261.1

Frequencies

GnomAD3 genomes AF: 0.00387 AC: 588 AN: 152052 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.00111

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00523

Gnomad ASJ AF: 0.00576

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000829

Gnomad FIN AF: 0.00161

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.00594

Gnomad OTH AF: 0.00669

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 42 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 32

African (AFR) AC: 0 AN: 0

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2

East Asian (EAS) AF: 0.00 AC: 0 AN: 2

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AC: 0 AN: 0

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 32

Other (OTH) AF: 0.00 AC: 0 AN: 4

GnomAD4 genome AF: 0.00386 AC: 587 AN: 152164 Hom.: 1 Cov.: 32 AF XY: 0.00359 AC XY: 267 AN XY: 74402

African (AFR) AF: 0.00111 AC: 46 AN: 41550

American (AMR) AF: 0.00523 AC: 80 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00576 AC: 20 AN: 3470

East Asian (EAS) AF: 0.000194 AC: 1 AN: 5156

South Asian (SAS) AF: 0.000622 AC: 3 AN: 4822

European-Finnish (FIN) AF: 0.00161 AC: 17 AN: 10584

Middle Eastern (MID) AF: 0.00680 AC: 2 AN: 294

European-Non Finnish (NFE) AF: 0.00594 AC: 404 AN: 67960

Other (OTH) AF: 0.00662 AC: 14 AN: 2114

Alfa AF: 0.000641 Hom.: 0

Bravo AF: 0.00450

Asia WGS AF: 0.000867 AC: 3 AN: 3476

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	1	Telangiectasia, hereditary hemorrhagic, type 2 (2)
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.73
CADD	Benign	8.3
DANN	Benign	0.95
PhyloP100		-0.52
PromoterAI		0.013	Neutral
Mutation Taster		=300/0	polymorphism

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

Other links and lift over

dbSNP: rs573048639; hg19: chr12-52301433;