Variant chr18-24118154-A-G details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001135993.2(TTC39C):c.1108A>G(p.Lys370Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000659 in 1,613,826 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 (★).

Frequency

Genomes: 𝑓 0.00027 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00070 ( 0 hom. )

Consequence

TTC39C
NM_001135993.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.53

Variant links:

Genes affected

TTC39C (HGNC:26595): (tetratricopeptide repeat domain 39C) Predicted to be involved in cilium assembly and otolith morphogenesis. [provided by Alliance of Genome Resources, Apr 2022]

TTC39C links:

ENSG00000264924 (HGNC:):

ENSG00000264924 links:

Genome browser will be placed here

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=0.052090615).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TTC39C	NM_001135993.2 linkuse as main transcript	c.1108A>G	p.Lys370Glu	missense_variant	8/14	ENST00000317571.8	NP_001129465.1	Q8N584-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TTC39C	ENST00000317571.8 linkuse as main transcript	c.1108A>G	p.Lys370Glu	missense_variant	8/14	1	NM_001135993.2	ENSP00000323645.3		Q8N584-1

Frequencies

GnomAD3 genomes

AF:

0.000270

AC:

AN:

152128

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000529

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000219

AC:

AN:

251180

Hom.:

AF XY:

0.000228

AC XY:

AN XY:

135750

show subpopulations

Gnomad AFR exome

AF:

0.000246

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:

0.000449

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000699

AC:

1022

AN:

1461698

Hom.:

Cov.:

AF XY:

0.000653

AC XY:

475

AN XY:

727146

show subpopulations

Gnomad4 AFR exome

AF:

0.000179

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000562

Gnomad4 NFE exome

AF:

0.000886

Gnomad4 OTH exome

AF:

0.000464

GnomAD4 genome

AF:

0.000270

AC:

AN:

152128

Hom.:

Cov.:

AF XY:

0.000323

AC XY:

AN XY:

74332

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.000529

Gnomad4 OTH

AF:

0.000479

Alfa

AF:

0.000436

Hom.:

Bravo

AF:

0.000230

TwinsUK

AF:

0.00135

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000814

AC:

ExAC

AF:

0.000272

AC:

EpiCase

AF:

0.000872

EpiControl

AF:

0.000771

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

Oct 26, 2022

The c.1108A>G (p.K370E) alteration is located in exon 8 (coding exon 8) of the TTC39C gene. This alteration results from a A to G substitution at nucleotide position 1108, causing the lysine (K) at amino acid position 370 to be replaced by a glutamic acid (E). 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

0.11

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Uncertain

0.97

DEOGEN2

Benign

0.019

.;T;T;T

Eigen

Benign

-0.50

Eigen_PC

Benign

-0.28

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.85

D;D;D;D

M_CAP

Benign

0.013

MetaRNN

Benign

0.052

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-1.1

.;N;.;.

PrimateAI

Uncertain

0.55

PROVEAN

Benign

0.53

N;N;N;.

REVEL

Benign

0.10

Sift

Benign

1.0

T;T;T;.

Sift4G

Benign

1.0

T;T;T;T

Polyphen

0.0

.;B;.;.

Vest4

0.25

MVP

0.50

MPC

0.66

ClinPred

0.054

GERP RS

2.9

Varity_R

0.094

gMVP

0.28

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