rs281865415

Positions:

• chr11-121166652-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1 PM2 PP3_Strong

The NM_005422.4(TECTA):​c.5458C>T​(p.Leu1820Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as no classification for the single variant (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: TECTA NM_005422.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.54

Genes affected

TECTA (HGNC:11720): (tectorin alpha) The tectorial membrane is an extracellular matrix of the inner ear that contacts the stereocilia bundles of specialized sensory hair cells. Sound induces movement of these hair cells relative to the tectorial membrane, deflects the stereocilia, and leads to fluctuations in hair-cell membrane potential, transducing sound into electrical signals. Alpha-tectorin is one of the major noncollagenous components of the tectorial membrane. Mutations in the TECTA gene have been shown to be responsible for autosomal dominant nonsyndromic hearing impairment and a recessive form of sensorineural pre-lingual non-syndromic deafness. [provided by RefSeq, Jul 2008]

TBCEL-TECTA (HGNC:54857): (TBCEL-TECTA readthrough) Predicted to enable alpha-tubulin binding activity. Predicted to be involved in microtubule cytoskeleton organization; post-chaperonin tubulin folding pathway; and tubulin complex assembly. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

TECTA (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM1: In a domain ZP (size 254) in uniprot entity TECTA_HUMAN there are 13 pathogenic changes around while only 3 benign (81%) in NM_005422.4
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.968

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TECTA	NM_005422.4	c.5458C>T	p.Leu1820Phe	missense_variant	18/24	ENST00000392793.6	NP_005413.2
TBCEL-TECTA	NM_001378761.1	c.6400C>T	p.Leu2134Phe	missense_variant	24/30		NP_001365690.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TECTA	ENST00000392793.6	c.5458C>T	p.Leu1820Phe	missense_variant	18/24	5	NM_005422.4	ENSP00000376543.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461892 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727248

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.89
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	28
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.25	T;.;T
Eigen	Pathogenic	0.95
Eigen_PC	Pathogenic	0.93
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	.;D;D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.97	D;D;D
MetaSVM	Uncertain	0.59	D
MutationAssessor	Uncertain	2.2	M;.;M
PrimateAI	Pathogenic	0.83	D
PROVEAN	Benign	-0.96	N;.;N
REVEL	Pathogenic	0.71
Sift	Pathogenic	0.0	D;.;D
Sift4G	Pathogenic	0.0	D;.;D
Polyphen		1.0	D;.;D
Vest4		0.93
MutPred		0.94		Loss of ubiquitination at K1819 (P = 0.1037);.;Loss of ubiquitination at K1819 (P = 0.1037);
MVP		0.93
MPC		1.1
ClinPred		1.0	D
GERP RS		6.0
Varity_R		0.56
gMVP		0.72

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

Other links and lift over

dbSNP: rs281865415; hg19: chr11-121037361; COSMIC: COSV50690543;