Variant 19-48714427-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_001130915.2(MAMSTR):c.662C>T(p.Ala221Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000107 in 1,388,910 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00011 ( 1 hom. )

Consequence

MAMSTR
NM_001130915.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.19

Variant links:

Genes affected

MAMSTR (HGNC:26689): (MEF2 activating motif and SAP domain containing transcriptional regulator) Predicted to enable transcription coregulator activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to act upstream of or within positive regulation of myotube differentiation and positive regulation of transcription by RNA polymerase II. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

MAMSTR links:

Genome browser will be placed here

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=0.004667729).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MAMSTR	NM_001130915.2 linkuse as main transcript	c.662C>T	p.Ala221Val	missense_variant	7/10	ENST00000318083.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MAMSTR	ENST00000318083.11 linkuse as main transcript	c.662C>T	p.Ala221Val	missense_variant	7/10	2	NM_001130915.2	P2	Q6ZN01-1
MAMSTR	ENST00000594582.1 linkuse as main transcript	c.219+379C>T		intron_variant		1			Q6ZN01-3
MAMSTR	ENST00000356751.8 linkuse as main transcript	c.353C>T	p.Ala118Val	missense_variant	5/8	2		A2	Q6ZN01-2

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152088

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000387

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000434

AC:

AN:

13814

Hom.:

AF XY:

0.000477

AC XY:

AN XY:

8384

show subpopulations

Gnomad AFR exome

AF:

0.00245

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00102

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000374

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000110

AC:

136

AN:

1236714

Hom.:

Cov.:

AF XY:

0.000123

AC XY:

AN XY:

603894

show subpopulations

Gnomad4 AFR exome

AF:

0.0000414

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000710

Gnomad4 SAS exome

AF:

0.000819

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000808

Gnomad4 OTH exome

AF:

0.0000785

GnomAD4 genome

AF:

0.0000788

AC:

AN:

152196

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74426

show subpopulations

Gnomad4 AFR

AF:

0.0000722

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000388

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000718

ExAC

AF:

0.0000903

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

Sep 26, 2023

The c.662C>T (p.A221V) alteration is located in exon 7 (coding exon 6) of the MAMSTR gene. This alteration results from a C to T substitution at nucleotide position 662, causing the alanine (A) at amino acid position 221 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

0.11

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.47

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.026

T;.

Eigen

Benign

-0.46

Eigen_PC

Benign

-0.56

FATHMM_MKL

Benign

0.084

LIST_S2

Benign

0.60

T;T

MetaRNN

Benign

0.0047

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.7

L;.

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-0.77

N;N

REVEL

Benign

0.077

Sift

Benign

0.10

T;T

Sift4G

Benign

0.26

T;T

Polyphen

0.89

P;.

Vest4

0.14

MutPred

0.12

Gain of MoRF binding (P = 0.0924);.;

MVP

0.25

MPC

0.30

ClinPred

0.023

GERP RS

1.3

Varity_R

0.042

gMVP

0.35

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.18

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