Variant 12-82896326-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_152588.3(TMTC2):c.1163C>G(p.Pro388Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000406 in 1,613,994 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00039 ( 3 hom. )

Consequence

TMTC2
NM_152588.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.57

Variant links:

Genes affected

TMTC2 (HGNC:25440): (transmembrane O-mannosyltransferase targeting cadherins 2) The protein encoded by this gene is an integral membrane protein localized to the endoplasmic reticulum (ER). The encoded protein contains many tetratricopeptide repeats, sequences known for being involved in protein-protein interactions. This protein binds both the calcium uptake pump SERCA2B and the carbohydrate-binding chaperone calnexin, and it appears to play a role in calcium homeostasis in the ER. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2016]

TMTC2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.20284545).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TMTC2	NM_152588.3 linkuse as main transcript	c.1163C>G	p.Pro388Arg	missense_variant	3/12	ENST00000321196.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TMTC2	ENST00000321196.8 linkuse as main transcript	c.1163C>G	p.Pro388Arg	missense_variant	3/12	1	NM_152588.3	P1

Frequencies

GnomAD3 genomes

AF:

0.000526

AC:

AN:

151984

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00243

Gnomad ASJ

AF:

0.000865

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000426

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.000462

AC:

116

AN:

251304

Hom.:

AF XY:

0.000457

AC XY:

AN XY:

135812

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.00147

Gnomad ASJ exome

AF:

0.000496

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000431

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.000394

AC:

576

AN:

1461892

Hom.:

Cov.:

AF XY:

0.000397

AC XY:

289

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.000179

Gnomad4 AMR exome

AF:

0.00159

Gnomad4 ASJ exome

AF:

0.000344

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000386

Gnomad4 OTH exome

AF:

0.000729

GnomAD4 genome

AF:

0.000526

AC:

AN:

152102

Hom.:

Cov.:

AF XY:

0.000471

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.00243

Gnomad4 ASJ

AF:

0.000865

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000426

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.000419

Hom.:

Bravo

AF:

0.000907

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000698

AC:

ExAC

AF:

0.000469

AC:

EpiCase

AF:

0.000436

EpiControl

AF:

0.000356

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 26, 2021

The c.1163C>G (p.P388R) alteration is located in exon 3 (coding exon 3) of the TMTC2 gene. This alteration results from a C to G substitution at nucleotide position 1163, causing the proline (P) at amino acid position 388 to be replaced by an arginine (R). 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

Pathogenic

0.72

BayesDel_addAF

Benign

-0.018

BayesDel_noAF

Pathogenic

0.17

Cadd

Uncertain

Dann

Uncertain

1.0

DEOGEN2

Benign

0.0078

T;.;T

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

D;D;D

M_CAP

Benign

0.039

MetaRNN

Benign

0.20

T;T;T

MetaSVM

Benign

-0.77

MutationAssessor

Benign

1.8

L;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.69

PROVEAN

Benign

-1.4

N;N;N

REVEL

Benign

0.23

Sift

Benign

0.23

T;T;T

Sift4G

Benign

0.21

T;T;T

Polyphen

0.99

D;D;.

Vest4

0.88

MVP

0.40

MPC

0.20

ClinPred

0.069

GERP RS

5.9

Varity_R

0.20

gMVP

0.65

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