dbSNP rs757779139: TMC2:p.Arg88Gln (chr20-2558636-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_080751.3(TMC2):c.263G>A(p.Arg88Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000255 in 1,569,788 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R88L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

TMC2
NM_080751.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.766

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:

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=0.041246444).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMC2	NM_080751.3 link	c.263G>A	p.Arg88Gln	missense_variant	Exon 3 of 20	ENST00000358864.2	NP_542789.2	Q8TDI7-1
TMC2	XM_005260660.5 link	c.338G>A	p.Arg113Gln	missense_variant	Exon 1 of 18		XP_005260717.1
TMC2	XR_001754152.2 link	n.472G>A		non_coding_transcript_exon_variant	Exon 1 of 13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMC2	ENST00000358864.2 link	c.263G>A	p.Arg88Gln	missense_variant	Exon 3 of 20	1	NM_080751.3	ENSP00000351732.1		Q8TDI7-1
TMC2	ENST00000644205.1 link	n.422G>A		non_coding_transcript_exon_variant	Exon 1 of 15

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152244

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00000212

AC:

AN:

1417544

Hom.:

Cov.:

AF XY:

0.00000143

AC XY:

AN XY:

700672

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:

0.00000184

Gnomad4 OTH exome

AF:

0.0000170

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152244

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74380

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

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

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.73

CADD

Benign

0.28

DANN

Benign

0.80

DEOGEN2

Benign

0.0037

Eigen

Benign

-1.9

Eigen_PC

Benign

-2.0

FATHMM_MKL

Benign

0.033

LIST_S2

Benign

0.48

M_CAP

Benign

0.0090

MetaRNN

Benign

0.041

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.79

PrimateAI

Benign

0.19

PROVEAN

Benign

-0.080

REVEL

Benign

0.0040

Sift

Benign

0.32

Sift4G

Benign

0.59

Polyphen

0.0

Vest4

0.078

MutPred

0.25

Loss of MoRF binding (P = 0.0652);

MVP

0.048

MPC

0.14

ClinPred

0.080

GERP RS

-5.6

Varity_R

0.024

gMVP

0.078

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over