Genetic Variant NM_001080532.3:c.2947C>G (chr15-81332775-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001080532.3(TMC3):c.2947C>G(p.Arg983Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000018 in 1,611,320 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

TMC3
NM_001080532.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.15

Variant links:

Genes affected

TMC3 (HGNC:22995): (transmembrane channel like 3) Predicted to enable mechanosensitive ion channel activity. Predicted to be involved in ion transmembrane transport. Predicted to be integral component of plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMC3 links:

TMC3-AS1 (HGNC:51424): (TMC3 antisense RNA 1)

TMC3-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07428506).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMC3	NM_001080532.3 link	c.2947C>G	p.Arg983Gly	missense_variant	Exon 22 of 22	ENST00000359440.6	NP_001074001.1	Q7Z5M5-1
TMC3-AS1	NR_120365.1 link	n.426+234G>C		intron_variant	Intron 2 of 6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMC3	ENST00000359440.6 link	c.2947C>G	p.Arg983Gly	missense_variant	Exon 22 of 22	1	NM_001080532.3	ENSP00000352413.5		Q7Z5M5-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152106

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:

0.00000415

AC:

AN:

240826

Hom.:

AF XY:

0.00

AC XY:

AN XY:

131044

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:

0.00000923

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000178

AC:

AN:

1459214

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

725700

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:

0.0000234

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152106

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74302

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:

0.00000756

ExAC

AF:

0.00000828

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 10, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2947C>G (p.R983G) alteration is located in exon 22 (coding exon 22) of the TMC3 gene. This alteration results from a C to G substitution at nucleotide position 2947, causing the arginine (R) at amino acid position 983 to be replaced by a glycine (G). 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

0.073

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.51

CADD

Benign

8.3

DANN

Benign

0.97

DEOGEN2

Benign

0.0088

.;T

Eigen

Benign

-0.74

Eigen_PC

Benign

-0.75

FATHMM_MKL

Benign

0.18

LIST_S2

Benign

0.35

T;T

M_CAP

Benign

0.018

MetaRNN

Benign

0.074

T;T

MetaSVM

Benign

-0.96

MutationAssessor

Benign

0.69

.;N

PrimateAI

Benign

0.24

PROVEAN

Benign

-0.37

N;N

REVEL

Benign

0.13

Sift

Benign

0.062

T;T

Sift4G

Uncertain

0.0090

D;D

Polyphen

0.016

.;B

Vest4

0.049

MutPred

0.12

.;Gain of relative solvent accessibility (P = 0.0166);

MVP

0.23

MPC

0.19

ClinPred

0.064

GERP RS

2.5

Varity_R

0.095

gMVP

0.14

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