Variant 4-146867562-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_031956.4(TTC29):c.821C>T(p.Ala274Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000183 in 1,531,152 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

TTC29
NM_031956.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.07

Variant links:

Genes affected

TTC29 (HGNC:29936): (tetratricopeptide repeat domain 29) Involved in cilium movement and cilium organization. Located in sperm flagellum. Implicated in spermatogenic failure 42. [provided by Alliance of Genome Resources, Apr 2022]

TTC29 links:

TTC29 (HGNC:):

TTC29 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.229202).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TTC29	NM_031956.4 linkuse as main transcript	c.821C>T	p.Ala274Val	missense_variant	8/13	ENST00000325106.9	NP_114162.2	Q8NA56-1A0A140VK62Q8TC83

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
TTC29	ENST00000325106.9 linkuse as main transcript	c.821C>T	p.Ala274Val	missense_variant	8/13	1	NM_031956.4	ENSP00000316740.4	Q8NA56-1
TTC29	ENST00000508306.5 linkuse as main transcript	n.821C>T		non_coding_transcript_exon_variant	8/14	1		ENSP00000422648.1	E7EQZ6
TTC29	ENST00000513335.5 linkuse as main transcript	c.899C>T	p.Ala300Val	missense_variant	9/14	2		ENSP00000423505.1	G5E9Z5
TTC29	ENST00000504425.5 linkuse as main transcript	c.821C>T	p.Ala274Val	missense_variant	8/13	5		ENSP00000425778.1	E7EQ14

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152042

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000229

AC:

AN:

174642

Hom.:

AF XY:

0.00

AC XY:

AN XY:

93894

show subpopulations

Gnomad AFR exome

AF:

0.0000952

Gnomad AMR exome

AF:

0.00

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:

0.0000398

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000145

AC:

AN:

1379110

Hom.:

Cov.:

AF XY:

0.0000147

AC XY:

AN XY:

682464

show subpopulations

Gnomad4 AFR exome

AF:

0.0000647

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000137

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000141

Gnomad4 OTH exome

AF:

0.0000354

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152042

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74268

show subpopulations

Gnomad4 AFR

AF:

0.0000966

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:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000658

Hom.:

Bravo

AF:

0.0000340

ESP6500AA

AF:

0.000275

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000168

AC:

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

Sep 26, 2024

The c.821C>T (p.A274V) alteration is located in exon 8 (coding exon 6) of the TTC29 gene. This alteration results from a C to T substitution at nucleotide position 821, causing the alanine (A) at amino acid position 274 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

0.21

BayesDel_addAF

Benign

-0.031

BayesDel_noAF

Benign

-0.28

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.088

.;T;.;.

Eigen

Benign

-0.17

Eigen_PC

Benign

-0.10

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.83

T;T;T;T

M_CAP

Benign

0.053

MetaRNN

Benign

0.23

T;T;T;T

MetaSVM

Benign

-0.59

MutationAssessor

Benign

0.81

.;L;.;.

PrimateAI

Benign

0.35

PROVEAN

Uncertain

-2.8

D;D;.;D

REVEL

Uncertain

0.39

Sift

Uncertain

0.0040

D;D;.;D

Sift4G

Uncertain

0.0060

D;D;D;D

Polyphen

0.66

P;P;.;P

Vest4

0.24

MVP

0.78

MPC

0.015

ClinPred

0.24

GERP RS

4.6

Varity_R

0.25

gMVP

0.45

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

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