Variant 1-205241817-G-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_014858.4(TMCC2):c.520G>A(p.Gly174Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000437 in 1,602,670 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000033 ( 0 hom. )

Consequence

TMCC2
NM_014858.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.771

Variant links:

Genes affected

TMCC2 (HGNC:24239): (transmembrane and coiled-coil domain family 2) Involved in amyloid precursor protein metabolic process. Located in endoplasmic reticulum. [provided by Alliance of Genome Resources, Apr 2022]

TMCC2 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=0.02708131).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TMCC2	NM_014858.4 linkuse as main transcript	c.520G>A	p.Gly174Ser	missense_variant	2/5	ENST00000358024.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TMCC2	ENST00000358024.8 linkuse as main transcript	c.520G>A	p.Gly174Ser	missense_variant	2/5	1	NM_014858.4	P3	O75069-1
TMCC2	ENST00000545499.5 linkuse as main transcript	c.286G>A	p.Gly96Ser	missense_variant	2/5	2		A1	O75069-2
TMCC2	ENST00000495538.5 linkuse as main transcript	n.751G>A		non_coding_transcript_exon_variant	2/5	5

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000290

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000688

AC:

AN:

218054

Hom.:

AF XY:

0.0000332

AC XY:

AN XY:

120492

show subpopulations

Gnomad AFR exome

AF:

0.000645

Gnomad AMR exome

AF:

0.000122

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:

0.0000212

Gnomad OTH exome

AF:

0.000185

GnomAD4 exome

AF:

0.0000331

AC:

AN:

1450368

Hom.:

Cov.:

AF XY:

0.0000236

AC XY:

AN XY:

720840

show subpopulations

Gnomad4 AFR exome

AF:

0.000481

Gnomad4 AMR exome

AF:

0.000115

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000235

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000190

Gnomad4 OTH exome

AF:

0.0000334

GnomAD4 genome

AF:

0.000144

AC:

AN:

152302

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.000289

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.0000869

Hom.:

Bravo

AF:

0.000166

ExAC

AF:

0.0000510

AC:

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 04, 2022

The c.520G>A (p.G174S) alteration is located in exon 2 (coding exon 2) of the TMCC2 gene. This alteration results from a G to A substitution at nucleotide position 520, causing the glycine (G) at amino acid position 174 to be replaced by a serine (S). 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

0.067

BayesDel_addAF

Benign

-0.53

BayesDel_noAF

Benign

-0.63

CADD

Benign

DANN

Benign

0.90

DEOGEN2

Benign

0.012

T;.

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.38

LIST_S2

Benign

0.47

T;T

M_CAP

Benign

0.031

MetaRNN

Benign

0.027

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.14

N;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-0.15

N;N

REVEL

Benign

0.028

Sift

Benign

0.22

T;T

Sift4G

Benign

0.26

T;T

Polyphen

0.0020

B;.

Vest4

0.28

MutPred

0.26

Gain of phosphorylation at G174 (P = 2e-04);.;

MVP

0.25

MPC

0.58

ClinPred

0.0089

GERP RS

0.33

Varity_R

0.042

gMVP

0.30

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