Genetic Variant NM_000020.3:c.1131A>G (chr12-51916118-A-G) – ACMG Classification: Benign (-21 pts)

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000020.3(ACVRL1):c.1131A>G(p.Ala377Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00167 in 1,613,782 control chromosomes in the GnomAD database, including 42 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0089 ( 21 hom., cov: 33)

Exomes 𝑓: 0.00091 ( 21 hom. )

Consequence

ACVRL1
NM_000020.3 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:11

Conservation

PhyloP100: -2.73

Publications

0 publications found

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]

ACVRL1 Gene-Disease associations (from GenCC):

telangiectasia, hereditary hemorrhagic, type 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), ClinGen, Genomics England PanelApp
hereditary hemorrhagic telangiectasia
Inheritance: AR, AD Classification: SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Orphanet

ACVRL1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.86).

BP6

Variant 12-51916118-A-G is Benign according to our data. Variant chr12-51916118-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 254706.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-2.73 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00894 (1361/152232) while in subpopulation AFR AF = 0.0313 (1299/41538). AF 95% confidence interval is 0.0299. There are 21 homozygotes in GnomAd4. There are 640 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 21 AD,AR gene

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

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ACVRL1	NM_000020.3	MANE Select	c.1131A>G	p.Ala377Ala	synonymous	Exon 8 of 10	NP_000011.2
ACVRL1	NM_001077401.2		c.1131A>G	p.Ala377Ala	synonymous	Exon 7 of 9	NP_001070869.1
ACVRL1	NM_001406487.1		c.1131A>G	p.Ala377Ala	synonymous	Exon 9 of 11	NP_001393416.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ACVRL1	ENST00000388922.9	TSL:1 MANE Select	c.1131A>G	p.Ala377Ala	synonymous	Exon 8 of 10	ENSP00000373574.4
ACVRL1	ENST00000550683.5	TSL:1	c.1173A>G	p.Ala391Ala	synonymous	Exon 7 of 9	ENSP00000447884.1
ACVRL1	ENST00000551576.6	TSL:1	c.1131A>G	p.Ala377Ala	synonymous	Exon 9 of 11	ENSP00000455848.2

Frequencies

GnomAD3 genomes

AF:

0.00891

AC:

1356

AN:

152114

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0312

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00275

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00718

GnomAD2 exomes

AF:

0.00232

AC:

583

AN:

251216

AF XY:

0.00166

show subpopulations

Gnomad AFR exome

AF:

0.0326

Gnomad AMR exome

AF:

0.00110

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000704

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.000909

AC:

1329

AN:

1461550

Hom.:

Cov.:

AF XY:

0.000781

AC XY:

568

AN XY:

727008

show subpopulations

African (AFR)

AF:

0.0324

AC:

1084

AN:

33470

American (AMR)

AF:

0.00152

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39686

South Asian (SAS)

AF:

0.0000348

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53396

Middle Eastern (MID)

AF:

0.00173

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000270

AC:

AN:

1111756

Other (OTH)

AF:

0.00222

AC:

134

AN:

60384

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

139

208

278

347

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

114

152

190

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00894

AC:

1361

AN:

152232

Hom.:

Cov.:

AF XY:

0.00860

AC XY:

640

AN XY:

74430

show subpopulations

African (AFR)

AF:

0.0313

AC:

1299

AN:

41538

American (AMR)

AF:

0.00275

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5160

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68018

Other (OTH)

AF:

0.00710

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

135

202

270

337

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00431

Hom.:

Bravo

AF:

0.00994

Asia WGS

AF:

0.00231

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Telangiectasia, hereditary hemorrhagic, type 2 (4)

not provided (3)

not specified (3)

Cardiovascular phenotype (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.86

CADD

Benign

0.83

(source)

DANN

Benign

0.26

PhyloP100

-2.7

Mutation Taster

=98/2

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over