Genetic Variant MEX3D:p.Ala574Pro (chr19-1555799-C-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_203304.4(MEX3D):c.1720G>C(p.Ala574Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000582 in 1,392,026 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 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000061 ( 0 hom. )

Consequence

MEX3D
NM_203304.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.532

Variant links:

Genes affected

MEX3D (HGNC:16734): (mex-3 RNA binding family member D) Enables mRNA 3'-UTR AU-rich region binding activity. Located in nucleus and perinuclear region of cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

MEX3D 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=0.062659115).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MEX3D	NM_203304.4 link	c.1720G>C	p.Ala574Pro	missense_variant	Exon 2 of 2	ENST00000402693.5	NP_976049.3	Q86XN8-1
MEX3D	NM_001174118.2 link	c.1720G>C	p.Ala574Pro	missense_variant	Exon 2 of 3		NP_001167589.1	Q86XN8-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MEX3D	ENST00000402693.5 link	c.1720G>C	p.Ala574Pro	missense_variant	Exon 2 of 2	1	NM_203304.4	ENSP00000384398.3		Q86XN8-1
MEX3D	ENST00000605173.2 link	c.1192G>C	p.Ala398Pro	missense_variant	Exon 2 of 3	1		ENSP00000475059.1		S4R446

Frequencies

GnomAD3 genomes

AF:

0.0000330

AC:

AN:

151680

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:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000442

Gnomad OTH

AF:

0.000482

GnomAD3 exomes

AF:

0.000115

AC:

AN:

17458

Hom.:

AF XY:

0.000194

AC XY:

AN XY:

10320

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:

0.000248

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000613

AC:

AN:

1240240

Hom.:

Cov.:

AF XY:

0.0000629

AC XY:

AN XY:

603670

show subpopulations

Gnomad4 AFR exome

AF:

0.0000420

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000361

Gnomad4 SAS exome

AF:

0.0000849

Gnomad4 FIN exome

AF:

0.0000333

Gnomad4 NFE exome

AF:

0.0000601

Gnomad4 OTH exome

AF:

0.000137

GnomAD4 genome

AF:

0.0000329

AC:

AN:

151786

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74188

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:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000442

Gnomad4 OTH

AF:

0.000477

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 30, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1720G>C (p.A574P) alteration is located in exon 2 (coding exon 2) of the MEX3D gene. This alteration results from a G to C substitution at nucleotide position 1720, causing the alanine (A) at amino acid position 574 to be replaced by a proline (P). 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

0.067

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.64

CADD

Benign

1.1

DANN

Benign

0.95

DEOGEN2

Benign

0.014

T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.092

LIST_S2

Benign

0.33

T;T

M_CAP

Benign

0.063

MetaRNN

Benign

0.063

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.0

N;.

PrimateAI

Uncertain

0.76

PROVEAN

Benign

-0.41

N;.

REVEL

Benign

0.058

Sift

Benign

0.25

T;.

Sift4G

Benign

0.10

T;T

Polyphen

0.83

P;.

Vest4

0.068

MutPred

0.33

Gain of catalytic residue at A574 (P = 0.0034);.;

MVP

0.19

ClinPred

0.049

GERP RS

-1.4

Varity_R

0.044

gMVP

0.45

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