Genetic Variant TEKT2:p.Ile114Val (chr1-36085893-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_014466.3(TEKT2):c.340A>G(p.Ile114Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000607 in 1,614,030 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000058 ( 0 hom. )

Consequence

TEKT2
NM_014466.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.33

Publications

2 publications found

Variant links:

Genes affected

TEKT2 (HGNC:11725): (tektin 2) 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 expressed in the testis and its protein is localized to the flagella of the sperms, indicating that it may play a role in spermatogenesis. [provided by RefSeq, Jul 2008]

TEKT2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.037815124).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TEKT2	NM_014466.3 link	c.340A>G	p.Ile114Val	missense_variant	Exon 4 of 10	ENST00000207457.8	NP_055281.2	Q9UIF3
TEKT2	XM_005270753.3 link	c.340A>G	p.Ile114Val	missense_variant	Exon 4 of 10		XP_005270810.1	Q9UIF3
TEKT2	XM_011541258.4 link	c.340A>G	p.Ile114Val	missense_variant	Exon 4 of 10		XP_011539560.1	Q9UIF3
TEKT2	XM_017001055.2 link	c.340A>G	p.Ile114Val	missense_variant	Exon 4 of 10		XP_016856544.1	Q9UIF3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TEKT2	ENST00000207457.8 link	c.340A>G	p.Ile114Val	missense_variant	Exon 4 of 10	1	NM_014466.3	ENSP00000207457.3	Q9UIF3
TEKT2	ENST00000469024.1 link	n.*144A>G		non_coding_transcript_exon_variant	Exon 4 of 10	2		ENSP00000434183.1	E9PRS9
TEKT2	ENST00000469024.1 link	n.*144A>G		3_prime_UTR_variant	Exon 4 of 10	2		ENSP00000434183.1	E9PRS9

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000118

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000519

AC:

AN:

250630

AF XY:

0.0000295

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000707

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000581

AC:

AN:

1461786

Hom.:

Cov.:

AF XY:

0.0000536

AC XY:

AN XY:

727188

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33474

American (AMR)

AF:

0.000157

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53376

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000656

AC:

AN:

1111980

Other (OTH)

AF:

0.0000166

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152244

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74424

show subpopulations

African (AFR)

AF:

0.0000722

AC:

AN:

41550

American (AMR)

AF:

0.000131

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10594

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000815

Hom.:

Bravo

AF:

0.0000869

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000577

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 11, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.340A>G (p.I114V) alteration is located in exon 4 (coding exon 3) of the TEKT2 gene. This alteration results from a A to G substitution at nucleotide position 340, causing the isoleucine (I) at amino acid position 114 to be replaced by a valine (V). 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

0.077

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.60

CADD

Benign

(source)

DANN

Benign

0.73

DEOGEN2

Benign

0.039

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.16

FATHMM_MKL

Benign

0.75

LIST_S2

Benign

0.85

M_CAP

Benign

0.0027

MetaRNN

Benign

0.038

MetaSVM

Benign

-1.0

MutationAssessor

Benign

2.0

PhyloP100

3.3

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.040

REVEL

Benign

0.041

Sift

Benign

0.45

Sift4G

Benign

0.34

Polyphen

0.0080

Vest4

0.16

MVP

0.040

MPC

0.073

ClinPred

0.036

GERP RS

4.7

Varity_R

0.078

gMVP

0.11

Mutation Taster

=89/11

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

chr1-36085893-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over