Variant 20-2558734-C-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_080751.3(TMC2):c.361C>A(p.Pro121Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000316 in 1,582,562 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

TMC2
NM_080751.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.756

Variant links:

Genes affected

TMC2 (HGNC:16527): (transmembrane channel like 2) This gene encodes a transmembrane protein that is necesssary for mechanotransduction in cochlear hair cells of the inner ear. Mutations in this gene may underlie hereditary disorders of balance and hearing. [provided by RefSeq, Aug 2015]

TMC2 links:

TMC2 (HGNC:):

TMC2 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=0.050700516).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TMC2	NM_080751.3 linkuse as main transcript	c.361C>A	p.Pro121Thr	missense_variant	3/20	ENST00000358864.2	NP_542789.2	Q8TDI7-1
TMC2	XM_005260660.5 linkuse as main transcript	c.436C>A	p.Pro146Thr	missense_variant	1/18		XP_005260717.1
TMC2	XR_001754152.2 linkuse as main transcript	n.570C>A		non_coding_transcript_exon_variant	1/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TMC2	ENST00000358864.2 linkuse as main transcript	c.361C>A	p.Pro121Thr	missense_variant	3/20	1	NM_080751.3	ENSP00000351732.1		Q8TDI7-1
TMC2	ENST00000644205.1 linkuse as main transcript	n.520C>A		non_coding_transcript_exon_variant	1/15

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000723

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:

0.00000140

AC:

AN:

1430354

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

708544

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:

0.00

Gnomad4 OTH exome

AF:

0.0000340

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.0000723

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000644

Hom.:

Bravo

AF:

0.0000604

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 21, 2024

The c.361C>A (p.P121T) alteration is located in exon 3 (coding exon 3) of the TMC2 gene. This alteration results from a C to A substitution at nucleotide position 361, causing the proline (P) at amino acid position 121 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

0.071

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.65

CADD

Benign

6.8

DANN

Benign

0.62

DEOGEN2

Benign

0.0027

Eigen

Benign

-0.99

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.074

LIST_S2

Benign

0.33

M_CAP

Benign

0.016

MetaRNN

Benign

0.051

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.3

PrimateAI

Benign

0.22

PROVEAN

Benign

-0.040

REVEL

Benign

0.022

Sift

Benign

0.56

Sift4G

Benign

0.53

Polyphen

0.010

Vest4

0.10

MVP

0.17

MPC

0.14

ClinPred

0.071

GERP RS

0.95

Varity_R

0.052

gMVP

0.13

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