Genetic Variant TMEM132C:p.Glu197Val (chr12-128415236-A-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001136103.3(TMEM132C):c.590A>T(p.Glu197Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000267 in 1,608,664 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. E197G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

TMEM132C
NM_001136103.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.09

Variant links:

Genes affected

TMEM132C (HGNC:25436): (transmembrane protein 132C) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMEM132C 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;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM132C	NM_001136103.3 link	c.590A>T	p.Glu197Val	missense_variant	Exon 2 of 9	ENST00000435159.3	NP_001129575.2	Q8N3T6
TMEM132C	NM_001387058.1 link	c.530A>T	p.Glu177Val	missense_variant	Exon 2 of 9		NP_001373987.1
TMEM132C	XM_047429886.1 link	c.590A>T	p.Glu197Val	missense_variant	Exon 2 of 9		XP_047285842.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMEM132C	ENST00000435159.3 link	c.590A>T	p.Glu197Val	missense_variant	Exon 2 of 9	5	NM_001136103.3	ENSP00000410852.2		Q8N3T6

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151854

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000419

AC:

AN:

238556

Hom.:

AF XY:

0.00000770

AC XY:

AN XY:

129836

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.00000938

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000275

AC:

AN:

1456810

Hom.:

Cov.:

AF XY:

0.0000276

AC XY:

AN XY:

724372

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.0000342

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151854

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74160

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 06, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.590A>T (p.E197V) alteration is located in exon 2 (coding exon 2) of the TMEM132C gene. This alteration results from a A to T substitution at nucleotide position 590, causing the glutamic acid (E) at amino acid position 197 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

0.28

BayesDel_addAF

Benign

-0.0096

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.14

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.033

MetaRNN

Uncertain

0.47

MetaSVM

Benign

-0.61

MutationAssessor

Pathogenic

3.1

PrimateAI

Benign

0.32

PROVEAN

Uncertain

-3.6

REVEL

Uncertain

0.33

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0040

Polyphen

0.98

Vest4

0.48

MutPred

0.55

Loss of sheet (P = 0.0817);

MVP

0.28

MPC

0.50

ClinPred

0.95

GERP RS

3.9

Varity_R

0.33

gMVP

0.69

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