Genetic Variant TMEM176B:p.Ser94Asn (chr7-150793995-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001101312.2(TMEM176B):c.281G>A(p.Ser94Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000675 in 1,613,690 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S94R) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000060 ( 0 hom. )

Consequence

TMEM176B
NM_001101312.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.207

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 made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.044212878).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM176B	NM_001101312.2 link	c.281G>A	p.Ser94Asn	missense_variant	Exon 3 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.281G>A	p.Ser94Asn	missense_variant	Exon 3 of 7	1	NM_001101312.2	ENSP00000318409.5		Q3YBM2-1

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00105

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000771

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000878

AC:

AN:

250550

Hom.:

AF XY:

0.000118

AC XY:

AN XY:

135356

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000381

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000796

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000602

AC:

AN:

1461384

Hom.:

Cov.:

AF XY:

0.0000674

AC XY:

AN XY:

727016

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00149

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000171

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000138

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00105

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000773

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.000136

ExAC

AF:

0.0000988

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 21, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.281G>A (p.S94N) alteration is located in exon 3 (coding exon 2) of the TMEM176B gene. This alteration results from a G to A substitution at nucleotide position 281, causing the serine (S) at amino acid position 94 to be replaced by an asparagine (N). 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

-0.59

BayesDel_noAF

Benign

-0.77

CADD

Benign

4.5

DANN

Benign

0.87

DEOGEN2

Benign

0.016

T;T;T;T;T

Eigen

Benign

-0.74

Eigen_PC

Benign

-0.69

FATHMM_MKL

Benign

0.014

LIST_S2

Benign

0.26

.;.;.;T;.

M_CAP

Benign

0.0048

MetaRNN

Benign

0.044

T;T;T;T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

0.34

N;N;N;N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.22

N;N;N;N;N

REVEL

Benign

0.061

Sift

Benign

0.53

T;T;T;T;T

Sift4G

Benign

0.31

T;T;T;T;T

Polyphen

0.077

B;B;B;B;B

Vest4

0.080

MutPred

0.46

Loss of glycosylation at S94 (P = 0.08);Loss of glycosylation at S94 (P = 0.08);Loss of glycosylation at S94 (P = 0.08);Loss of glycosylation at S94 (P = 0.08);Loss of glycosylation at S94 (P = 0.08);

MVP

0.42

MPC

0.045

ClinPred

0.028

GERP RS

3.0

Varity_R

0.034

gMVP

0.21

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