NM_005422.4:c.4481T>G

Variant names:

• chr11-121158016-T-G
• rs200544452
• NM_005422.4:c.4481T>G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_005422.4(TECTA):​c.4481T>G​(p.Val1494Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. V1494A) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TECTA NM_005422.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.29
• Publications: 4 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 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005422.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TECTA	NM_005422.4	MANE Select	c.4481T>G	p.Val1494Gly	missense	Exon 14 of 24	NP_005413.2
	TBCEL-TECTA	NM_001378761.1		c.5438T>G	p.Val1813Gly	missense	Exon 20 of 30	NP_001365690.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TECTA	ENST00000392793.6	TSL:5 MANE Select	c.4481T>G	p.Val1494Gly	missense	Exon 14 of 24	ENSP00000376543.1
	TECTA	ENST00000264037.2	TSL:1	c.4481T>G	p.Val1494Gly	missense	Exon 13 of 23	ENSP00000264037.2
	TECTA	ENST00000642222.1		c.4481T>G	p.Val1494Gly	missense	Exon 14 of 24	ENSP00000493855.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.67
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Benign	0.13	T
Eigen	Uncertain	0.37
Eigen_PC	Uncertain	0.37
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.077	D
MetaRNN	Uncertain	0.50	D
MetaSVM	Benign	-0.77	T
MutationAssessor	Benign	1.1	L
PhyloP100		3.3
PrimateAI	Uncertain	0.65	T
PROVEAN	Benign	-0.84	N
REVEL	Uncertain	0.39
Sift	Benign	0.39	T
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.66
MutPred		0.57		Loss of stability (P = 0.0594)
MVP		0.71
MPC		1.2
ClinPred		0.94	D
GERP RS		3.1
Varity_R		0.44
gMVP		0.71
Mutation Taster		=32/68	disease causing

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

Other links and lift over

dbSNP: rs200544452; hg19: chr11-121028725;