Genetic Variant TMC1:c.-195-12_-195-11dupTT (chr9-72627898-A-ATT) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_138691.3(TMC1):c.-195-12_-195-11dupTT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000845 in 343,302 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000067 ( 0 hom., cov: 24)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

TMC1
NM_138691.3 intron

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0420

Variant links:

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]

TMC1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMC1	NM_138691.3 link	c.-195-12_-195-11dupTT		intron_variant	Intron 3 of 23	ENST00000297784.10	NP_619636.2	Q8TDI8
TMC1	XM_017014256.2 link	c.19+11432_19+11433dupTT		intron_variant	Intron 2 of 20		XP_016869745.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMC1	ENST00000297784.10 link	c.-195-23_-195-22insTT		intron_variant	Intron 3 of 23	1	NM_138691.3	ENSP00000297784.6		Q8TDI8

Frequencies

GnomAD3 genomes

AF:

0.00000672

AC:

AN:

148760

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000247

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:

0.000144

AC:

AN:

194542

Hom.:

Cov.:

AF XY:

0.000125

AC XY:

AN XY:

111584

show subpopulations

Gnomad4 AFR exome

AF:

0.000221

Gnomad4 AMR exome

AF:

0.000193

Gnomad4 ASJ exome

AF:

0.000176

Gnomad4 EAS exome

AF:

0.000136

Gnomad4 SAS exome

AF:

0.000149

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000158

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000672

AC:

AN:

148760

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

72442

show subpopulations

Gnomad4 AFR

AF:

0.0000247

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

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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