9-72694619-T-G

Variant names:

• chr9-72694619-T-G
• rs140388347
• NM_138691.3:c.141T>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_138691.3(TMC1):​c.141T>G​(p.Asp47Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 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: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: TMC1 NM_138691.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.166

Genes affected

TMC1 (HGNC:16513): (transmembrane channel like 1) This gene is considered a member of a gene family predicted to encode transmembrane proteins. The specific function of this gene is unknown; however, it is known to be required for normal function of cochlear hair cells. Mutations in this gene have been associated with progressive postlingual hearing loss and profound prelingual deafness. [provided by RefSeq, Jul 2008]

ACMG classification

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=0.08443719).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMC1	NM_138691.3	c.141T>G	p.Asp47Glu	missense_variant	Exon 7 of 24	ENST00000297784.10	NP_619636.2
TMC1	XM_017014256.2	c.144T>G	p.Asp48Glu	missense_variant	Exon 4 of 21		XP_016869745.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMC1	ENST00000297784.10	c.141T>G	p.Asp47Glu	missense_variant	Exon 7 of 24	1	NM_138691.3	ENSP00000297784.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000400 AC: 1 AN: 249926 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135082

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: 0.00000886

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460882 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 726724

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: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	17
DANN	Uncertain	1.0
DEOGEN2	Benign	0.073	T;T;.;T
Eigen	Benign	-0.24
Eigen_PC	Benign	-0.22
FATHMM_MKL	Benign	0.72	D
LIST_S2	Benign	0.56	.;.;T;T
M_CAP	Benign	0.0076	T
MetaRNN	Benign	0.084	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L;L;.;L
PrimateAI	Uncertain	0.63	T
PROVEAN	Benign	0.33	N;.;.;N
REVEL	Benign	0.12
Sift	Benign	1.0	T;.;.;T
Sift4G	Benign	1.0	T;.;.;T
Polyphen		0.96	D;D;.;D
Vest4		0.18
MutPred		0.19		Loss of loop (P = 0.0804);Loss of loop (P = 0.0804);Loss of loop (P = 0.0804);Loss of loop (P = 0.0804);
MVP		0.13
MPC		0.50
ClinPred		0.39	T
GERP RS		0.075
Varity_R		0.034
gMVP		0.048

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

Other links and lift over

dbSNP: rs140388347; hg19: chr9-75309535;