12-8841389-T-C

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_144670.6(A2ML1):c.1101T>C(p.Asp367Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00494 in 1,614,070 control chromosomes in the GnomAD database, including 354 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.026 ( 177 hom., cov: 32)

Exomes 𝑓: 0.0027 ( 177 hom. )

Consequence

A2ML1
NM_144670.6 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: -0.489

Variant links:

Genes affected

A2ML1 (HGNC:23336): (alpha-2-macroglobulin like 1) This gene encodes a member of the alpha-macroglobulin superfamily. The encoded protein is thought to be an N-glycosylated monomeric protein that acts as an inhibitor of several proteases. It has been shown to form covalent interactions with proteases, and has been reported as the p170 antigen recognized by autoantibodies in the autoimmune disease paraneoplastic pemphigus (PNP; PMID:20805888). Mutations in these gene have also been associated with some cases of Noonan syndrome (NS; PMID:24939586) as well as some cases of otitis media (PMID:26121085). Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Aug 2015]

A2ML1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.68).

BP6

Variant 12-8841389-T-C is Benign according to our data. Variant chr12-8841389-T-C is described in ClinVar as [Benign]. Clinvar id is 413815.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr12-8841389-T-C is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-0.489 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0884 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
A2ML1	NM_144670.6 link	c.1101T>C	p.Asp367Asp	synonymous_variant	Exon 11 of 36	ENST00000299698.12	NP_653271.3	B3KVV6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
A2ML1	ENST00000299698.12 link	c.1101T>C	p.Asp367Asp	synonymous_variant	Exon 11 of 36	1	NM_144670.6	ENSP00000299698.7		A8K2U0-1

Frequencies

GnomAD3 genomes

AF:

0.0263

AC:

4002

AN:

152158

Hom.:

176

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0910

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0115

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000829

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.0172

GnomAD3 exomes

AF:

0.00671

AC:

1674

AN:

249470

Hom.:

AF XY:

0.00465

AC XY:

630

AN XY:

135356

show subpopulations

Gnomad AFR exome

AF:

0.0927

Gnomad AMR exome

AF:

0.00484

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000262

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000371

Gnomad OTH exome

AF:

0.00363

GnomAD4 exome

AF:

0.00272

AC:

3970

AN:

1461794

Hom.:

177

Cov.:

AF XY:

0.00227

AC XY:

1649

AN XY:

727202

show subpopulations

Gnomad4 AFR exome

AF:

0.0930

Gnomad4 AMR exome

AF:

0.00579

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000336

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.000170

Gnomad4 OTH exome

AF:

0.00573

GnomAD4 genome

AF:

0.0263

AC:

4006

AN:

152276

Hom.:

177

Cov.:

AF XY:

0.0254

AC XY:

1892

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.0909

Gnomad4 AMR

AF:

0.0114

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000829

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000235

Gnomad4 OTH

AF:

0.0170

Alfa

AF:

0.00751

Hom.:

Bravo

AF:

0.0298

Asia WGS

AF:

0.00491

AC:

AN:

3478

EpiCase

AF:

0.000382

EpiControl

AF:

0.000652

ClinVar

Significance: Benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Clinical Genetics, Academic Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Dec 22, 2016

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not provided

Benign:3

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 06, 2017

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: The A2ML1 c.1101T>C (p.Asp367Asp) variant involves the alteration of a non-conserved nucleotide, resulting in a synonymous change. Mutation taster predicts a polymorphism outcome for this variant. 5/5 splice prediction tools predict no significant impact on normal splicing. ESE finder predicts that this variant may affect binding of multiple ESE sites. However, these predictions have yet to be confirmed by functional studies. This variant was found in 969/120652 control chromosomes (48 homozygotes) from ExAC, predominantly observed in the African subpopulation at a frequency of 0.089778 (880/9802). This frequency is about 22444 times the estimated maximal expected allele frequency of a pathogenic A2ML1 variant (0.000004), thus it is a common benign polymorphism found primarily in the populations of African origin. In addition, multiple clinical diagnostic laboratories (via ClinVar) have classified this variant as benign. Taken together, this variant is classified as benign. -

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.68

CADD

Benign

3.5

DANN

Benign

0.86

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over