Variant 17-6812922-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000338694.7(TEKT1):c.761G>A(p.Arg254His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000206 in 1,614,212 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R254C) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00021 ( 0 hom. )

Consequence

TEKT1
ENST00000338694.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.21

Variant links:

Genes affected

TEKT1 (HGNC:15534): (tektin 1) This gene product belongs to the tektin family of proteins. Tektins comprise a family of filament-forming proteins that are coassembled with tubulins to form ciliary and flagellar microtubules. This gene is predominantly expressed in the testis and in mouse, tektin 1 mRNA was localized to the spermatocytes and round spermatids in the seminiferous tubules, indicating that it may play a role in spermatogenesis. [provided by RefSeq, Jul 2008]

TEKT1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05595401).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TEKT1	NM_053285.2 linkuse as main transcript	c.761G>A	p.Arg254His	missense_variant	6/8	ENST00000338694.7	NP_444515.1
TEKT1	XM_011524027.4 linkuse as main transcript	c.761G>A	p.Arg254His	missense_variant	6/7		XP_011522329.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
TEKT1	ENST00000338694.7 linkuse as main transcript	c.761G>A	p.Arg254His	missense_variant	6/8	1	NM_053285.2	ENSP00000341346	P1
TEKT1	ENST00000572291.1 linkuse as main transcript	c.149G>A	p.Arg50His	missense_variant	2/3	5		ENSP00000458518
TEKT1	ENST00000571744.1 linkuse as main transcript	c.95G>A	p.Arg32His	missense_variant	1/2	3		ENSP00000460197
TEKT1	ENST00000575592.1 linkuse as main transcript	c.*352G>A		3_prime_UTR_variant, NMD_transcript_variant	5/7	2		ENSP00000460359

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000171

AC:

AN:

251298

Hom.:

AF XY:

0.000169

AC XY:

AN XY:

135818

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000492

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:

0.000185

Gnomad OTH exome

AF:

0.000816

GnomAD4 exome

AF:

0.000213

AC:

311

AN:

1461858

Hom.:

Cov.:

AF XY:

0.000217

AC XY:

158

AN XY:

727230

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.000236

Gnomad4 OTH exome

AF:

0.000281

GnomAD4 genome

AF:

0.000138

AC:

AN:

152354

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74506

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000201

Hom.:

Bravo

AF:

0.000151

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000123

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 15, 2024

The c.761G>A (p.R254H) alteration is located in exon 6 (coding exon 5) of the TEKT1 gene. This alteration results from a G to A substitution at nucleotide position 761, causing the arginine (R) at amino acid position 254 to be replaced by a histidine (H). 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

0.078

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.018

T;T

Eigen

Benign

-0.39

Eigen_PC

Benign

-0.31

FATHMM_MKL

Benign

0.73

LIST_S2

Benign

0.73

T;T

M_CAP

Benign

0.0086

MetaRNN

Benign

0.056

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

2.0

.;M

MutationTaster

Benign

0.78

D;D

PrimateAI

Benign

0.22

PROVEAN

Benign

-1.9

.;N

REVEL

Benign

0.033

Sift

Benign

0.15

.;T

Sift4G

Benign

0.17

T;T

Polyphen

0.017

.;B

Vest4

0.12

MVP

0.22

MPC

0.11

ClinPred

0.043

GERP RS

3.8

Varity_R

0.15

gMVP

0.38

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