Variant 3-152432765-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_021038.5(MBNL1):c.394G>A(p.Ala132Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000991 in 1,614,012 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

MBNL1
NM_021038.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.27

Variant links:

Genes affected

MBNL1 (HGNC:6923): (muscleblind like splicing regulator 1) This gene encodes a member of the muscleblind protein family which was initially described in Drosophila melanogaster. The encoded protein is a C3H-type zinc finger protein that modulates alternative splicing of pre-mRNAs. Muscleblind proteins bind specifically to expanded dsCUG RNA but not to normal size CUG repeats and may thereby play a role in the pathophysiology of myotonic dystrophy. Mice lacking this gene exhibited muscle abnormalities and cataracts. Several alternatively spliced transcript variants have been described but the full-length natures of only some have been determined. The different isoforms are thought to have different binding specificities and/or splicing activities. [provided by RefSeq, Sep 2015]

MBNL1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.31273758).

BS2

High AC in GnomAdExome4 at 12 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MBNL1	NM_021038.5 linkuse as main transcript	c.394G>A	p.Ala132Thr	missense_variant	4/10	ENST00000324210.10	NP_066368.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MBNL1	ENST00000324210.10 linkuse as main transcript	c.394G>A	p.Ala132Thr	missense_variant	4/10	1	NM_021038.5	ENSP00000319429	A1	Q9NR56-5

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152136

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251482

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135916

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000821

AC:

AN:

1461876

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00000899

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152136

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74310

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000225

Hom.:

ExAC

AF:

0.00000824

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

Jul 19, 2022

The c.394G>A (p.A132T) alteration is located in exon 3 (coding exon 3) of the MBNL1 gene. This alteration results from a G to A substitution at nucleotide position 394, causing the alanine (A) at amino acid position 132 to be replaced by a threonine (T). 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

0.079

BayesDel_addAF

Uncertain

0.021

BayesDel_noAF

Benign

-0.13

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.20

T;T;.;.;T;.;T;.;.;.;T;.;.;T

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.89

D;D;D;D;D;D;T;D;D;D;.;.;.;D

M_CAP

Benign

0.028

MetaRNN

Benign

0.31

T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.67

MutationAssessor

Benign

1.8

L;.;L;.;.;L;.;.;L;L;L;L;L;.

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D;D;D;D;D;D;D

PrimateAI

Pathogenic

0.82

PROVEAN

Benign

-0.11

N;.;N;N;N;N;N;N;N;N;N;N;N;N

REVEL

Benign

0.20

Sift

Benign

0.13

T;.;T;D;T;T;T;T;T;T;T;T;T;T

Sift4G

Benign

0.53

T;T;T;D;T;T;T;T;T;T;T;T;T;T

Polyphen

0.56

P;.;D;.;B;.;.;D;.;.;P;.;.;.

Vest4

0.43

MutPred

0.20

Gain of glycosylation at A132 (P = 0.0024);Gain of glycosylation at A132 (P = 0.0024);Gain of glycosylation at A132 (P = 0.0024);.;.;Gain of glycosylation at A132 (P = 0.0024);.;Gain of glycosylation at A132 (P = 0.0024);Gain of glycosylation at A132 (P = 0.0024);Gain of glycosylation at A132 (P = 0.0024);Gain of glycosylation at A132 (P = 0.0024);Gain of glycosylation at A132 (P = 0.0024);Gain of glycosylation at A132 (P = 0.0024);.;

MVP

0.52

MPC

2.1

ClinPred

0.73

GERP RS

4.8

Varity_R

0.23

gMVP

0.76

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