Variant X-13779840-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001001995.3(GPM6B):c.675C>G(p.Ile225Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000059 in 1,186,970 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000089 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.0000056 ( 0 hom. 2 hem. )

Consequence

GPM6B
NM_001001995.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.32

Variant links:

Genes affected

GPM6B (HGNC:4461): (glycoprotein M6B) This gene encodes a membrane glycoprotein that belongs to the proteolipid protein family. Proteolipid protein family members are expressed in most brain regions and are thought to be involved in cellular housekeeping functions such as membrane trafficking and cell-to-cell communication. This protein may also be involved in osteoblast differentiation. Alternate splicing results in multiple transcript variants. Pseudogenes of this gene are located on chromosomes Y and 22. [provided by RefSeq, Jan 2016]

GPM6B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High Hemizygotes in GnomAdExome at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GPM6B	NM_001001995.3 linkuse as main transcript	c.675C>G	p.Ile225Met	missense_variant	5/8	ENST00000316715.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GPM6B	ENST00000316715.9 linkuse as main transcript	c.675C>G	p.Ile225Met	missense_variant	5/8	2	NM_001001995.3	P3	Q13491-4

Frequencies

GnomAD3 genomes

AF:

0.00000894

AC:

AN:

111837

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33983

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:

0.000280

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000222

AC:

AN:

180458

Hom.:

AF XY:

0.0000308

AC XY:

AN XY:

65000

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000292

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000558

AC:

AN:

1075133

Hom.:

Cov.:

AF XY:

0.00000577

AC XY:

AN XY:

346843

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000135

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000242

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000894

AC:

AN:

111837

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33983

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000280

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.0000247

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

May 31, 2023

The c.675C>G (p.I225M) alteration is located in exon 5 (coding exon 5) of the GPM6B gene. This alteration results from a C to G substitution at nucleotide position 675, causing the isoleucine (I) at amino acid position 225 to be replaced by a methionine (M). 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

0.13

BayesDel_addAF

Pathogenic

0.35

BayesDel_noAF

Pathogenic

0.56

Cadd

Uncertain

Dann

Uncertain

1.0

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.96

D;D;D;D;D;D

M_CAP

Uncertain

0.12

MetaRNN

Uncertain

0.53

D;D;D;D;D;D

MetaSVM

Benign

-0.67

MutationTaster

Benign

1.0

D;D;D;D;D;D

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-0.90

N;N;N;N;N;N

REVEL

Pathogenic

0.82

Sift

Uncertain

0.021

D;D;D;D;D;D

Sift4G

Uncertain

0.011

D;D;D;D;D;D

Polyphen

0.98, 1.0, 0.99

.;D;D;D;D;.

Vest4

0.62

MutPred

0.68

.;.;Gain of disorder (P = 0.0652);.;.;.;

MVP

0.65

MPC

1.8

ClinPred

0.57

GERP RS

4.6

Varity_R

0.62

gMVP

0.93

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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