Variant 8-143429776-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_201589.4(MAFA):c.631G>A(p.Ala211Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000675 in 1,495,678 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000017 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000072 ( 0 hom. )

Consequence

MAFA
NM_201589.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.369

Variant links:

Genes affected

MAFA (HGNC:23145): (MAF bZIP transcription factor A) MAFA is a transcription factor that binds RIPE3b, a conserved enhancer element that regulates pancreatic beta cell-specific expression of the insulin gene (INS; MIM 176730) (Olbrot et al., 2002 [PubMed 12011435]).[supplied by OMIM, Mar 2008]

MAFA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.04931757).

BS2

High AC in GnomAdExome4 at 99 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MAFA	NM_201589.4 link	c.631G>A	p.Ala211Thr	missense_variant	1/1	ENST00000333480.3	NP_963883.2	Q8NHW3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MAFA	ENST00000333480.3 link	c.631G>A	p.Ala211Thr	missense_variant	1/1	6	NM_201589.4	ENSP00000328364.2		Q8NHW3
MAFA	ENST00000528185.1 link	n.123G>A		non_coding_transcript_exon_variant	1/2	3

Frequencies

GnomAD3 genomes

AF:

0.0000172

AC:

AN:

116120

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000370

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000336

AC:

AN:

119208

Hom.:

AF XY:

0.0000305

AC XY:

AN XY:

65536

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:

0.0000963

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000443

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000718

AC:

AN:

1379454

Hom.:

Cov.:

AF XY:

0.0000676

AC XY:

AN XY:

680698

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:

0.0000381

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000882

Gnomad4 OTH exome

AF:

0.0000173

GnomAD4 genome

AF:

0.0000172

AC:

AN:

116224

Hom.:

Cov.:

AF XY:

0.0000180

AC XY:

AN XY:

55660

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000370

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000264

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Islet cell adenomatosis

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Neuberg Centre For Genomic Medicine, NCGM

Jun 22, 2023

The missense variant c.631G>A p.Ala211Thr in the MAFA gene has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. This variant is reported with the allele frequency 0.003% in the gnomAD Exomes. The amino acid Alanine at position 211 is changed to a Threonine changing protein sequence and it might alter its composition and physico-chemical properties. Computational evidence Polyphen, SIFT and MutationTaster predicts conflicting evidence on protein structure and function for this variant. For these reasons, this variant has been classified as Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.092

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.29

CADD

Benign

8.2

DANN

Benign

0.97

DEOGEN2

Benign

0.18

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.091

LIST_S2

Benign

0.34

M_CAP

Pathogenic

0.63

MetaRNN

Benign

0.049

MetaSVM

Uncertain

0.071

MutationAssessor

Benign

0.0

PrimateAI

Pathogenic

0.80

PROVEAN

Benign

-0.52

REVEL

Benign

0.23

Sift

Benign

0.61

Sift4G

Benign

0.58

Polyphen

0.0040

Vest4

0.12

MutPred

0.25

Gain of glycosylation at A211 (P = 0.0498);

MVP

0.067

ClinPred

0.032

GERP RS

-0.88

Varity_R

0.034

gMVP

0.17

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