17-76733143-A-G

Position:

chr17-76733143-A-G

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_001080510.5(METTL23):c.250A>G(p.Ile84Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000304 in 1,613,914 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

METTL23
NM_001080510.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: -1.36

Variant links:

Genes affected

METTL23 (HGNC:26988): (methyltransferase 23, arginine) The protein encoded by this gene functions as a transcription factor regulator in the transcriptional pathway for human cognition. It is a partner of the alpha subunit of the GA-binding protein transcription factor. Mutations in this gene cause mild autosomal recessive intellectual disability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2014]

METTL23 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.01869893).

BP6

Variant 17-76733143-A-G is Benign according to our data. Variant chr17-76733143-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1031798.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
METTL23	NM_001080510.5 linkuse as main transcript	c.250A>G	p.Ile84Val	missense_variant	3/5	ENST00000341249.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
METTL23	ENST00000341249.11 linkuse as main transcript	c.250A>G	p.Ile84Val	missense_variant	3/5	1	NM_001080510.5	P1	Q86XA0-1

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000402

AC:

AN:

248940

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

135062

show subpopulations

Gnomad AFR exome

AF:

0.000194

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000886

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.0000246

AC:

AN:

1461594

Hom.:

Cov.:

AF XY:

0.0000248

AC XY:

AN XY:

727060

show subpopulations

Gnomad4 AFR exome

AF:

0.000239

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000104

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000117

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.0000853

AC:

AN:

152320

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.000120

Gnomad4 AMR

AF:

0.000327

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.0000680

ExAC

AF:

0.0000331

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Intellectual disability, autosomal recessive 44

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Aug 30, 2018

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 16, 2024

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.60

BayesDel_noAF

Benign

-0.82

CADD

Benign

0.0010

DANN

Benign

0.31

DEOGEN2

Benign

0.0018

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

Eigen

Benign

-2.2

Eigen_PC

Benign

-2.2

FATHMM_MKL

Benign

0.11

LIST_S2

Benign

0.46

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

M_CAP

Benign

0.0045

MetaRNN

Benign

0.019

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

MetaSVM

Benign

-0.93

MutationAssessor

Benign

0.0

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

MutationTaster

Benign

1.0

N;N;N;N;N;N;N;N;N;N

PrimateAI

Benign

0.23

PROVEAN

Benign

-0.42

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

REVEL

Benign

0.11

Sift

Benign

0.86

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

Sift4G

Benign

0.87

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

Polyphen

0.0010

.;B;.;.;.;.;.;.;.;.;B;.;.;.

Vest4

0.052

MVP

0.15

MPC

.;.;.;.;.;.;.;.;.;.;8.64925113599E-4;.;.;.

ClinPred

0.012

GERP RS

-12

Varity_R

0.055

gMVP

0.29

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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