Genetic Variant NM_001101312.2:c.593T>C (chr7-150793095-A-G) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_001101312.2(TMEM176B):c.593T>C(p.Met198Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,613,670 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TMEM176B
NM_001101312.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.35

Publications

0 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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.816

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM176B	NM_001101312.2 link	c.593T>C	p.Met198Thr	missense_variant	Exon 5 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.593T>C	p.Met198Thr	missense_variant	Exon 5 of 7	1	NM_001101312.2	ENSP00000318409.5		Q3YBM2-1

Frequencies

GnomAD3 genomes

AF:

0.0000461

AC:

AN:

151900

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461770

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727182

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86238

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53380

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111954

Other (OTH)

AF:

0.00

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000461

AC:

AN:

151900

Hom.:

Cov.:

AF XY:

0.0000539

AC XY:

AN XY:

74190

show subpopulations

African (AFR)

AF:

0.000169

AC:

AN:

41342

American (AMR)

AF:

0.00

AC:

AN:

15244

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5166

South Asian (SAS)

AF:

0.00

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67952

Other (OTH)

AF:

0.00

AC:

AN:

2078

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 23, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.593T>C (p.M198T) alteration is located in exon 5 (coding exon 4) of the TMEM176B gene. This alteration results from a T to C substitution at nucleotide position 593, causing the methionine (M) at amino acid position 198 to be replaced by a threonine (T). 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

0.29

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.41

CADD

Benign

(source)

DANN

Benign

0.91

DEOGEN2

Benign

0.20

T;T;T;T;T;.

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.51

FATHMM_MKL

Benign

0.050

LIST_S2

Benign

0.47

.;.;.;T;.;T

M_CAP

Benign

0.0076

MetaRNN

Pathogenic

0.82

D;D;D;D;D;D

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.7

L;L;L;L;L;.

PhyloP100

1.3

PrimateAI

Uncertain

0.48

PROVEAN

Pathogenic

-5.3

D;D;D;D;D;D

REVEL

Benign

0.071

Sift

Uncertain

0.0010

D;D;D;D;D;D

Sift4G

Uncertain

0.0030

D;D;D;D;D;D

Polyphen

0.89

P;P;P;P;P;.

Vest4

0.50

MutPred

0.82

Loss of MoRF binding (P = 0.0916);Loss of MoRF binding (P = 0.0916);Loss of MoRF binding (P = 0.0916);Loss of MoRF binding (P = 0.0916);Loss of MoRF binding (P = 0.0916);.;

MVP

0.14

MPC

0.19

ClinPred

0.50

GERP RS

2.5

Varity_R

0.54

gMVP

0.41

Mutation Taster

=94/6

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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NM_001101312.2:c.593T>C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over