Genetic Variant TMEM175:c.-417C>T (chr4-948135-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_001297423.2(TMEM175):c.-535C>T variant causes a 5 prime UTR premature start codon gain change. The variant allele was found at a frequency of 0.000129 in 1,614,142 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 0.00011 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

TMEM175
NM_001297423.2 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.60

Variant links:

Genes affected

TMEM175 (HGNC:28709): (transmembrane protein 175) Enables potassium ion leak channel activity. Involved in potassium ion transmembrane transport. Located in endosome and lysosome. Is integral component of endosome membrane and integral component of lysosomal membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMEM175 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=0.014107436).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM175	NM_032326.4 link	c.173C>T	p.Thr58Met	missense_variant	Exon 3 of 11	ENST00000264771.9	NP_115702.1	Q9BSA9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMEM175	ENST00000264771.9 link	c.173C>T	p.Thr58Met	missense_variant	Exon 3 of 11	1	NM_032326.4	ENSP00000264771.4		Q9BSA9-1

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000282

AC:

AN:

251372

Hom.:

AF XY:

0.000235

AC XY:

AN XY:

135908

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000173

Gnomad ASJ exome

AF:

0.00556

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000131

AC:

191

AN:

1461802

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

727202

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000157

Gnomad4 ASJ exome

AF:

0.00490

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000306

Gnomad4 OTH exome

AF:

0.000331

GnomAD4 genome

AF:

0.000112

AC:

AN:

152340

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74490

show subpopulations

Gnomad4 AFR

AF:

0.0000240

Gnomad4 AMR

AF:

0.000261

Gnomad4 ASJ

AF:

0.00288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000653

Hom.:

Bravo

AF:

0.000147

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000214

AC:

EpiCase

AF:

0.000218

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 06, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.173C>T (p.T58M) alteration is located in exon 3 (coding exon 2) of the TMEM175 gene. This alteration results from a C to T substitution at nucleotide position 173, causing the threonine (T) at amino acid position 58 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

Benign

-0.10

BayesDel_noAF

Benign

-0.11

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.026

T;T;T

Eigen

Uncertain

0.64

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.81

T;T;T

M_CAP

Benign

0.045

MetaRNN

Benign

0.014

T;T;T

MetaSVM

Benign

-0.70

MutationAssessor

Benign

1.5

.;L;.

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-2.4

N;N;N

REVEL

Benign

0.24

Sift

Uncertain

0.014

D;D;D

Sift4G

Uncertain

0.0070

D;D;D

Polyphen

1.0

.;D;.

Vest4

0.42

MVP

0.66

MPC

0.54

ClinPred

0.13

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.13

gMVP

0.75

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