NM_005422.4:c.2638A>G

Variant names:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_005422.4(TECTA):c.2638A>G(p.Thr880Ala) variant causes a missense change. The variant allele was found at a frequency of 0.0000812 in 1,613,964 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. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000042 ( 0 hom. )

Consequence

TECTA
NM_005422.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:2

Conservation

PhyloP100: 5.32

Variant links:

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]

TECTA links:

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]

TBCEL-TECTA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008613646).

BP6

Variant 11-121129908-A-G is Benign according to our data. Variant chr11-121129908-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 229295.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=2}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000459 (70/152342) while in subpopulation AFR AF= 0.00156 (65/41576). AF 95% confidence interval is 0.00126. There are 0 homozygotes in gnomad4. There are 32 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TECTA	NM_005422.4 link	c.2638A>G	p.Thr880Ala	missense_variant	Exon 10 of 24	ENST00000392793.6	NP_005413.2	O75443
TBCEL-TECTA	NM_001378761.1 link	c.3595A>G	p.Thr1199Ala	missense_variant	Exon 16 of 30		NP_001365690.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TECTA	ENST00000392793.6 link	c.2638A>G	p.Thr880Ala	missense_variant	Exon 10 of 24	5	NM_005422.4	ENSP00000376543.1	O75443
TECTA	ENST00000264037.2 link	c.2638A>G	p.Thr880Ala	missense_variant	Exon 9 of 23	1		ENSP00000264037.2	O75443
TECTA	ENST00000642222.1 link	c.2638A>G	p.Thr880Ala	missense_variant	Exon 10 of 24			ENSP00000493855.1	A0A2R8YDL0
TECTA	ENST00000645008.1 link	c.-57A>G		upstream_gene_variant				ENSP00000496274.1	A0A2R8YGQ5

Frequencies

GnomAD3 genomes

AF:

0.000460

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00157

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:

0.0000441

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000143

AC:

AN:

251092

Hom.:

AF XY:

0.0000663

AC XY:

AN XY:

135696

show subpopulations

Gnomad AFR exome

AF:

0.00209

Gnomad AMR exome

AF:

0.0000289

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:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000417

AC:

AN:

1461622

Hom.:

Cov.:

AF XY:

0.0000399

AC XY:

AN XY:

727094

show subpopulations

Gnomad4 AFR exome

AF:

0.00146

Gnomad4 AMR exome

AF:

0.0000447

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:

0.00000450

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.000459

AC:

AN:

152342

Hom.:

Cov.:

AF XY:

0.000430

AC XY:

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.00156

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:

0.0000441

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.000134

Hom.:

Bravo

AF:

0.000529

ESP6500AA

AF:

0.00182

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000198

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:2

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Oct 29, 2024

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

See Variant Classification Assertion Criteria. -

not specified

Uncertain:1

Aug 26, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant classified as Uncertain Significance - Favor Benign. The p.Thr880Ala var iant in TECTA has not been previously reported in individuals with hearing loss, but has been identified in 0.23 % (24/10400) of African chromosomes by the Exom e Aggregation Consortium (ExAC, http://exac.broadinstitute.org; rs143315827). Co mputational prediction tools and conservation analysis do not provide strong sup port for or against an impact to the protein. In summary, while the clinical sig nificance of the p.Thr880Ala variant is uncertain, these data suggest it is more likely to be benign. -

Inborn genetic diseases

Uncertain:1

Dec 13, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2638A>G (p.T880A) alteration is located in exon 9 (coding exon 9) of the TECTA gene. This alteration results from a A to G substitution at nucleotide position 2638, causing the threonine (T) at amino acid position 880 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.47

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.21

T;.;T

Eigen

Benign

-0.37

Eigen_PC

Benign

-0.19

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.70

.;T;T

M_CAP

Benign

0.0059

MetaRNN

Benign

0.0086

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

L;.;L

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-0.64

N;.;N

REVEL

Benign

0.10

Sift

Benign

0.34

T;.;T

Sift4G

Benign

0.36

T;.;T

Polyphen

0.060

B;.;B

Vest4

0.14

MVP

0.51

MPC

0.33

ClinPred

0.050

GERP RS

5.6

Varity_R

0.13

gMVP

0.67

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

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over