Genetic Variant TMEM176B:p.Asp52Val (chr7-150796415-T-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_001101312.2(TMEM176B):c.155A>T(p.Asp52Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000815 in 1,614,112 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00050 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00085 ( 3 hom. )

Consequence

TMEM176B
NM_001101312.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0320

Publications

1 publications found

Variant links:

Genes affected

TMEM176B (HGNC:29596): (transmembrane protein 176B) Predicted to be involved in negative regulation of dendritic cell differentiation. Predicted to be located in nuclear membrane. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMEM176B links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.012642145).

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM176B	NM_001101312.2 link	c.155A>T	p.Asp52Val	missense_variant	Exon 2 of 7	ENST00000326442.10	NP_001094782.1	Q3YBM2-1A0A090N7V7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMEM176B	ENST00000326442.10 link	c.155A>T	p.Asp52Val	missense_variant	Exon 2 of 7	1	NM_001101312.2	ENSP00000318409.5		Q3YBM2-1

Frequencies

GnomAD3 genomes

AF:

0.000500

AC:

AN:

152106

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00259

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000823

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000688

AC:

173

AN:

251346

AF XY:

0.000618

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.000347

Gnomad ASJ exome

AF:

0.00446

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000977

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000848

AC:

1239

AN:

1461888

Hom.:

Cov.:

AF XY:

0.000829

AC XY:

603

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.000149

AC:

AN:

33480

American (AMR)

AF:

0.000335

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00402

AC:

105

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.0000374

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000958

AC:

1065

AN:

1112008

Other (OTH)

AF:

0.000762

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

Heterozygous variant carriers

139

209

278

348

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000499

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.000417

AC XY:

AN XY:

74418

show subpopulations

African (AFR)

AF:

0.000193

AC:

AN:

41524

American (AMR)

AF:

0.000131

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00259

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.0000943

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000823

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.524

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00111

Hom.:

Bravo

AF:

0.000616

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.00182

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000552

AC:

EpiCase

AF:

0.000981

EpiControl

AF:

0.00119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 09, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.155A>T (p.D52V) alteration is located in exon 2 (coding exon 1) of the TMEM176B gene. This alteration results from a A to T substitution at nucleotide position 155, causing the aspartic acid (D) at amino acid position 52 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

Benign

0.12

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-0.58

CADD

Benign

(source)

DANN

Benign

0.82

DEOGEN2

Benign

0.15

T;T;T;T;T;.

Eigen

Benign

-0.59

Eigen_PC

Benign

-0.77

FATHMM_MKL

Benign

0.015

LIST_S2

Benign

0.60

.;.;.;T;.;T

M_CAP

Benign

0.0067

MetaRNN

Benign

0.013

T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.8

L;L;L;L;L;L

PhyloP100

0.032

PrimateAI

Benign

0.31

PROVEAN

Uncertain

-3.6

D;D;D;D;D;D

REVEL

Benign

0.060

Sift

Benign

0.14

T;T;T;T;T;D

Sift4G

Benign

0.29

T;T;T;T;T;T

Polyphen

0.84

P;P;P;P;P;.

Vest4

0.44

MVP

0.19

MPC

0.22

ClinPred

0.043

GERP RS

0.22

PromoterAI

-0.017

Neutral

(source)

Varity_R

0.13

gMVP

0.34

Mutation Taster

=98/2

polymorphism

(source)

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

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7-150796415-T-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over