Genetic Variant MTA3:p.Thr129Asn (chr2-42644131-C-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001330442.2(MTA3):c.386C>A(p.Thr129Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000631 in 1,586,024 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000042 ( 0 hom. )

Consequence

MTA3
NM_001330442.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.21

Variant links:

Genes affected

MTA3 (HGNC:23784): (metastasis associated 1 family member 3) Predicted to enable histone deacetylase binding activity; transcription coactivator activity; and transcription corepressor activity. Involved in negative regulation of transcription, DNA-templated. Located in nucleoplasm. Part of NuRD complex. [provided by Alliance of Genome Resources, Apr 2022]

MTA3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MTA3	NM_001330442.2 link	c.386C>A	p.Thr129Asn	missense_variant	Exon 6 of 17	ENST00000405094.2	NP_001317371.1	Q9BTC8-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MTA3	ENST00000405094.2 link	c.386C>A	p.Thr129Asn	missense_variant	Exon 6 of 17	5	NM_001330442.2	ENSP00000385823.1		Q9BTC8-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152086

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000479

GnomAD3 exomes

AF:

0.00000865

AC:

AN:

231132

Hom.:

AF XY:

0.0000159

AC XY:

AN XY:

125802

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000187

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000418

AC:

AN:

1433938

Hom.:

Cov.:

AF XY:

0.00000560

AC XY:

AN XY:

713934

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000456

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152086

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74262

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000196

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:

0.000479

ExAC

AF:

0.0000248

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 11, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.386C>A (p.T129N) alteration is located in exon 6 (coding exon 6) of the MTA3 gene. This alteration results from a C to A substitution at nucleotide position 386, causing the threonine (T) at amino acid position 129 to be replaced by an asparagine (N). 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

0.17

BayesDel_addAF

Uncertain

0.020

BayesDel_noAF

Benign

-0.21

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.66

D;D;.;D;D

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.94

.;D;D;D;D

M_CAP

Benign

0.065

MetaRNN

Uncertain

0.44

T;T;T;T;T

MetaSVM

Uncertain

0.36

MutationAssessor

Uncertain

2.2

.;.;M;.;M

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-2.6

D;D;N;N;D

REVEL

Uncertain

0.45

Sift

Benign

0.18

T;T;T;T;T

Sift4G

Benign

0.18

T;T;T;T;T

Polyphen

0.83

P;P;D;D;.

Vest4

0.68

MutPred

0.43

Loss of phosphorylation at T73 (P = 0.0773);Loss of phosphorylation at T73 (P = 0.0773);.;.;.;

MVP

0.56

MPC

0.40

ClinPred

0.79

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.27

gMVP

0.63

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