Genetic Variant TMEM151B:p.Ala203Val (chr6-44275434-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP3BP4

The NM_001137560.2(TMEM151B):c.608C>T(p.Ala203Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000788 in 1,535,268 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000083 ( 0 hom. )

Consequence

TMEM151B
NM_001137560.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.00

Variant links:

Genes affected

TMEM151B (HGNC:21315): (transmembrane protein 151B) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMEM151B links:

ENSG00000272442 (HGNC:):

ENSG00000272442 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

Multiple lines of computational evidence support a deleterious effect 6: AlphaMissense, Cadd, Dann, Eigen, PrimateAI, REVEL [when max_spliceai, M_CAP, MetaRNN, MutationTaster was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.27382827).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM151B	NM_001137560.2 link	c.608C>T	p.Ala203Val	missense_variant	Exon 3 of 3	ENST00000451188.7	NP_001131032.1	Q8IW70-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TMEM151B	ENST00000451188.7 link	c.608C>T	p.Ala203Val	missense_variant	Exon 3 of 3	5	NM_001137560.2	ENSP00000393161.2	Q8IW70-1
ENSG00000272442	ENST00000505802.1 link	n.312+1928C>T		intron_variant	Intron 1 of 9	2		ENSP00000424257.1	H0Y9J4
TMEM151B	ENST00000438774.2 link	c.576+1928C>T		intron_variant	Intron 2 of 2	3		ENSP00000409337.2	Q8IW70-2

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000350

AC:

AN:

142900

Hom.:

AF XY:

0.0000390

AC XY:

AN XY:

76902

show subpopulations

Gnomad AFR exome

AF:

0.000143

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:

0.0000766

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000832

AC:

115

AN:

1382942

Hom.:

Cov.:

AF XY:

0.0000721

AC XY:

AN XY:

679180

show subpopulations

Gnomad4 AFR exome

AF:

0.0000321

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000974

Gnomad4 OTH exome

AF:

0.000175

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000152

Hom.:

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 20, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.608C>T (p.A203V) alteration is located in exon 3 (coding exon 3) of the TMEM151B gene. This alteration results from a C to T substitution at nucleotide position 608, causing the alanine (A) at amino acid position 203 to be replaced by a valine (V). 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

Pathogenic

0.93

BayesDel_addAF

Uncertain

0.070

BayesDel_noAF

Uncertain

0.12

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.31

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.016

MetaRNN

Benign

0.27

MetaSVM

Uncertain

0.026

MutationAssessor

Uncertain

2.8

PrimateAI

Pathogenic

0.86

PROVEAN

Uncertain

-3.4

REVEL

Pathogenic

0.69

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.010

Polyphen

1.0

Vest4

0.41

MutPred

0.54

Gain of sheet (P = 0.1451);

MVP

0.13

ClinPred

0.84

GERP RS

4.7

Varity_R

0.66

gMVP

0.86

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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