12-8823315-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 0P and 15B. BP4_ModerateBP6_Very_StrongBP7BS2

The NM_144670.6(A2ML1):c.196C>T(p.Leu66Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00316 in 1,614,144 control chromosomes in the GnomAD database, including 22 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0019 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0033 ( 22 hom. )

Consequence

A2ML1
NM_144670.6 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.373

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:

A2ML1-AS1 (HGNC:41022): (A2ML1 antisense RNA 1)

A2ML1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.46).

BP6

Variant 12-8823315-C-T is Benign according to our data. Variant chr12-8823315-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 224929.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr12-8823315-C-T is described in Lovd as [Likely_benign].

BP7

Synonymous conserved (PhyloP=0.373 with no splicing effect.

BS2

High AC in GnomAd4 at 283 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
A2ML1	NM_144670.6 link	c.196C>T	p.Leu66Leu	synonymous_variant	Exon 2 of 36	ENST00000299698.12	NP_653271.3	B3KVV6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
A2ML1	ENST00000299698.12 link	c.196C>T	p.Leu66Leu	synonymous_variant	Exon 2 of 36	1	NM_144670.6	ENSP00000299698.7	A8K2U0-1
A2ML1-AS1	ENST00000537288.1 link	n.286+7347G>A		intron_variant	Intron 1 of 1	3
A2ML1	ENST00000537546.1 link	n.-198C>T		upstream_gene_variant		4

Frequencies

GnomAD3 genomes

AF:

0.00185

AC:

282

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000531

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000852

Gnomad ASJ

AF:

0.00144

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00352

Gnomad FIN

AF:

0.00113

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00303

Gnomad OTH

AF:

0.00287

GnomAD3 exomes

AF:

0.00270

AC:

673

AN:

249518

Hom.:

AF XY:

0.00302

AC XY:

409

AN XY:

135366

show subpopulations

Gnomad AFR exome

AF:

0.000194

Gnomad AMR exome

AF:

0.000840

Gnomad ASJ exome

AF:

0.00139

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00598

Gnomad FIN exome

AF:

0.00167

Gnomad NFE exome

AF:

0.00344

Gnomad OTH exome

AF:

0.00297

GnomAD4 exome

AF:

0.00330

AC:

4825

AN:

1461872

Hom.:

Cov.:

AF XY:

0.00343

AC XY:

2498

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.000687

Gnomad4 AMR exome

AF:

0.000917

Gnomad4 ASJ exome

AF:

0.00134

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00568

Gnomad4 FIN exome

AF:

0.00163

Gnomad4 NFE exome

AF:

0.00347

Gnomad4 OTH exome

AF:

0.00389

GnomAD4 genome

AF:

0.00186

AC:

283

AN:

152272

Hom.:

Cov.:

AF XY:

0.00181

AC XY:

135

AN XY:

74458

show subpopulations

Gnomad4 AFR

AF:

0.000529

Gnomad4 AMR

AF:

0.000851

Gnomad4 ASJ

AF:

0.00144

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00373

Gnomad4 FIN

AF:

0.00113

Gnomad4 NFE

AF:

0.00303

Gnomad4 OTH

AF:

0.00284

Alfa

AF:

0.00251

Hom.:

Bravo

AF:

0.00181

Asia WGS

AF:

0.00202

AC:

AN:

3478

EpiCase

AF:

0.00305

EpiControl

AF:

0.00403

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Aug 30, 2019

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

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Feb 20, 2022

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Jul 22, 2017

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. -

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Otitis media, susceptibility to

Benign:1

Dec 22, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.46

CADD

Benign

7.6

DANN

Benign

0.88

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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