NM_005422.4:c.1327C>T

Variant names:

• chr11-121125425-C-T
• rs745831106
• NM_005422.4:c.1327C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_005422.4(TECTA):​c.1327C>T​(p.His443Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.0000157 in 1,461,860 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000016 (0 hom.)
• Consequence: TECTA NM_005422.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.09
• Publications: 0 publications found

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]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TECTA	NM_005422.4	c.1327C>T	p.His443Tyr	missense_variant	Exon 8 of 24	ENST00000392793.6	NP_005413.2
TBCEL-TECTA	NM_001378761.1	c.2284C>T	p.His762Tyr	missense_variant	Exon 14 of 30		NP_001365690.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TECTA	ENST00000392793.6	c.1327C>T	p.His443Tyr	missense_variant	Exon 8 of 24	5	NM_005422.4	ENSP00000376543.1
TECTA	ENST00000264037.2	c.1327C>T	p.His443Tyr	missense_variant	Exon 7 of 23	1		ENSP00000264037.2
TECTA	ENST00000642222.1	c.1327C>T	p.His443Tyr	missense_variant	Exon 8 of 24			ENSP00000493855.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000358 AC: 9 AN: 251472 AF XY: 0.0000515

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000157 AC: 23 AN: 1461860 Hom.: 0 Cov.: 30 AF XY: 0.0000248 AC XY: 18 AN XY: 727230

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.000243 AC: 21 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53386

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 33

ExAC AF: 0.0000494 AC: 6

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Nov 23, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.His443Tyr variant in TECTA has not been previously reported in individuals with hearing loss, but has been identified in 6/16510 South Asian chromosomes b y the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs745831106). Computational prediction tools and conservation analysis suggest t hat the p.His443Tyr variant may impact the protein, though this information is n ot predictive enough to determine pathogenicity. In summary, the clinical signif icance of the p.His443Tyr variant is uncertain. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.29
BayesDel_addAF	Benign	-0.092	T
BayesDel_noAF	Uncertain	-0.070
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.24	T;.;T
Eigen	Uncertain	0.53
Eigen_PC	Uncertain	0.55
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.90	.;D;D
M_CAP	Benign	0.022	T
MetaRNN	Uncertain	0.61	D;D;D
MetaSVM	Benign	-0.76	T
MutationAssessor	Benign	1.6	L;.;L
PhyloP100		6.1
PrimateAI	Pathogenic	0.83	D
PROVEAN	Benign	-2.3	N;.;N
REVEL	Uncertain	0.30
Sift	Benign	0.13	T;.;T
Sift4G	Uncertain	0.0020	D;.;D
Polyphen		1.0	D;.;D
Vest4		0.94
MutPred		0.66		Loss of disorder (P = 0.0964);Loss of disorder (P = 0.0964);Loss of disorder (P = 0.0964);
MVP		0.85
MPC		1.2
ClinPred		0.57	D
GERP RS		4.7
Varity_R		0.44
gMVP		0.86
Mutation Taster		=43/57	disease causing

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

Other links and lift over

dbSNP: rs745831106; hg19: chr11-120996134;