Variant chrX-64268764-T-G details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_017677.4(MTMR8):c.1888A>C(p.Ile630Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000405 in 1,209,893 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 25 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 2 hem., cov: 22)

Exomes 𝑓: 0.000043 ( 0 hom. 23 hem. )

Consequence

MTMR8
NM_017677.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.610

Variant links:

Genes affected

MTMR8 (HGNC:16825): (myotubularin related protein 8) This gene encodes a member of the myotubularin-related family and is part of the MTMR6 subgroup. Family members are dual-specificity phosphatases and the encoded protein contains a phosphoinositide-binding domain (PID) and a SET-interacting domain (SID). Defects in other family members have been found in myotubular myopathic diseases. [provided by RefSeq, Mar 2010]

MTMR8 links:

LOC112268307 (HGNC:):

LOC112268307 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=0.0248034).

BS2

High Hemizygotes in GnomAd4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTMR8	NM_017677.4 linkuse as main transcript	c.1888A>C	p.Ile630Leu	missense_variant	14/14	ENST00000374852.4	NP_060147.2	Q96EF0-1
LOC112268307	XM_047442705.1 linkuse as main transcript	c.170+20958T>G		intron_variant			XP_047298661.1
LOC112268307	XM_047442706.1 linkuse as main transcript	c.126-36802T>G		intron_variant			XP_047298662.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MTMR8	ENST00000374852.4 linkuse as main transcript	c.1888A>C	p.Ile630Leu	missense_variant	14/14	1	NM_017677.4	ENSP00000363985.3		Q96EF0-1

Frequencies

GnomAD3 genomes

AF:

0.0000179

AC:

AN:

111665

Hom.:

Cov.:

AF XY:

0.0000591

AC XY:

AN XY:

33819

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:

0.000758

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000114

AC:

AN:

183407

Hom.:

AF XY:

0.000118

AC XY:

AN XY:

67845

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:

0.00105

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000221

GnomAD4 exome

AF:

0.0000428

AC:

AN:

1098228

Hom.:

Cov.:

AF XY:

0.0000633

AC XY:

AN XY:

363584

show subpopulations

Gnomad4 AFR exome

AF:

0.0000379

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000720

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000119

Gnomad4 OTH exome

AF:

0.000130

GnomAD4 genome

AF:

0.0000179

AC:

AN:

111665

Hom.:

Cov.:

AF XY:

0.0000591

AC XY:

AN XY:

33819

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:

0.000758

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000492

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.000115

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

Mar 22, 2023

The c.1888A>C (p.I630L) alteration is located in exon 14 (coding exon 14) of the MTMR8 gene. This alteration results from a A to C substitution at nucleotide position 1888, causing the isoleucine (I) at amino acid position 630 to be replaced by a leucine (L). 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

0.075

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.36

CADD

Benign

0.96

DANN

Benign

0.84

DEOGEN2

Benign

0.050

FATHMM_MKL

Benign

0.051

LIST_S2

Benign

0.29

M_CAP

Benign

0.0094

MetaRNN

Benign

0.025

MetaSVM

Benign

-0.45

MutationAssessor

Benign

-0.34

PrimateAI

Benign

0.36

PROVEAN

Benign

0.19

REVEL

Benign

0.15

Sift

Benign

0.29

Sift4G

Benign

1.0

Polyphen

0.0010

Vest4

0.050

MutPred

0.23

Gain of glycosylation at S625 (P = 0.1308);

MVP

0.41

MPC

0.0031

ClinPred

0.019

GERP RS

-0.80

Varity_R

0.14

gMVP

0.068

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