Variant chr4-146903642-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_031956.4(TTC29):c.488A>G(p.Tyr163Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 152,136 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Consequence

TTC29
NM_031956.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.89

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.827

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TTC29	NM_031956.4 linkuse as main transcript	c.488A>G	p.Tyr163Cys	missense_variant	6/13	ENST00000325106.9	NP_114162.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TTC29	ENST00000325106.9 linkuse as main transcript	c.488A>G	p.Tyr163Cys	missense_variant	6/13	1	NM_031956.4	ENSP00000316740	P4	Q8NA56-1
TTC29	ENST00000508306.5 linkuse as main transcript	c.488A>G	p.Tyr163Cys	missense_variant, NMD_transcript_variant	6/14	1		ENSP00000422648
TTC29	ENST00000513335.5 linkuse as main transcript	c.566A>G	p.Tyr189Cys	missense_variant	7/14	2		ENSP00000423505
TTC29	ENST00000504425.5 linkuse as main transcript	c.488A>G	p.Tyr163Cys	missense_variant	6/13	5		ENSP00000425778	A1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152136

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000404

AC:

AN:

247496

Hom.:

AF XY:

0.00

AC XY:

AN XY:

134266

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000293

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152136

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74316

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.00000828

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

Dec 08, 2023

The c.488A>G (p.Y163C) alteration is located in exon 6 (coding exon 4) of the TTC29 gene. This alteration results from a A to G substitution at nucleotide position 488, causing the tyrosine (Y) at amino acid position 163 to be replaced by a cysteine (C). 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

0.19

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

0.020

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.070

.;T;.;.

Eigen

Uncertain

0.38

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Uncertain

0.83

LIST_S2

Uncertain

0.89

D;D;D;D

M_CAP

Benign

0.014

MetaRNN

Pathogenic

0.83

D;D;D;D

MetaSVM

Benign

-0.94

MutationAssessor

Uncertain

2.7

.;M;.;.

MutationTaster

Benign

0.85

D;D;D;D

PrimateAI

Uncertain

0.62

PROVEAN

Pathogenic

-6.2

D;D;.;D

REVEL

Uncertain

0.32

Sift

Uncertain

0.0030

D;D;.;D

Sift4G

Pathogenic

0.0010

D;D;D;D

Polyphen

1.0

D;D;.;D

Vest4

0.82

MutPred

0.66

Loss of loop (P = 0.0603);.;.;.;

MVP

0.45

MPC

0.11

ClinPred

0.97

GERP RS

4.4

Varity_R

0.40

gMVP

0.66

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