Variant 6-37637381-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_153487.4(MDGA1):c.2855C>T(p.Ala952Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000787 in 1,613,420 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00040 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000045 ( 0 hom. )

Consequence

MDGA1
NM_153487.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.00

Variant links:

Genes affected

MDGA1 (HGNC:19267): (MAM domain containing glycosylphosphatidylinositol anchor 1) This gene encodes a glycosylphosphatidylinositol (GPI)-anchored cell surface glycoprotein that is expressed predominantly in the developing nervous system. In addition to possessing several cell adhesion molecule-like domains, the mature protein has six Ig-like domains, a single fibronectin type III domain, a MAM domain and a C-terminal GPI-anchoring site. Studies in other mammals suggest this protein plays a role in cell adhesion, migration, and axon guidance and, in the developing brain, neuronal migration. In humans, this gene is associated with bipolar disorder and schizophrenia. [provided by RefSeq, Oct 2016]

MDGA1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.013602525).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MDGA1	NM_153487.4 linkuse as main transcript	c.2855C>T	p.Ala952Val	missense_variant	17/17	ENST00000434837.8
MDGA1	XM_017010734.2 linkuse as main transcript	c.2873C>T	p.Ala958Val	missense_variant	17/17

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MDGA1	ENST00000434837.8 linkuse as main transcript	c.2855C>T	p.Ala952Val	missense_variant	17/17	1	NM_153487.4	P1	Q8NFP4-1

Frequencies

GnomAD3 genomes

AF:

0.000401

AC:

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00133

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000724

AC:

AN:

248600

Hom.:

AF XY:

0.0000815

AC XY:

AN XY:

134966

show subpopulations

Gnomad AFR exome

AF:

0.000906

Gnomad AMR exome

AF:

0.0000580

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000178

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000452

AC:

AN:

1461106

Hom.:

Cov.:

AF XY:

0.0000385

AC XY:

AN XY:

726800

show subpopulations

Gnomad4 AFR exome

AF:

0.00111

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000162

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.000400

AC:

AN:

152314

Hom.:

Cov.:

AF XY:

0.000389

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.00132

Gnomad4 AMR

AF:

0.000392

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000483

Hom.:

Bravo

AF:

0.000329

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000245

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000744

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 31, 2022

The c.2855C>T (p.A952V) alteration is located in exon 17 (coding exon 17) of the MDGA1 gene. This alteration results from a C to T substitution at nucleotide position 2855, causing the alanine (A) at amino acid position 952 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.088

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.50

Cadd

Benign

Dann

Benign

0.94

DEOGEN2

Benign

0.057

Eigen

Benign

-0.50

Eigen_PC

Benign

-0.31

FATHMM_MKL

Benign

0.42

LIST_S2

Benign

0.72

M_CAP

Benign

0.0053

MetaRNN

Benign

0.014

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

MutationTaster

Benign

0.99

N;N

PrimateAI

Benign

0.45

PROVEAN

Benign

-0.080

REVEL

Benign

0.034

Sift

Benign

0.41

Sift4G

Benign

0.17

Polyphen

0.027

Vest4

0.043

MVP

0.36

MPC

0.27

ClinPred

0.028

GERP RS

3.0

Varity_R

0.049

gMVP

0.35

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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