Variant chr2-74491541-C-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_022492.6(TTC31):c.745C>A(p.Pro249Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000376 in 1,613,666 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. 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. P249S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00025 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00039 ( 0 hom. )

Consequence

TTC31
NM_022492.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.34

Variant links:

Genes affected

TTC31 (HGNC:25759): (tetratricopeptide repeat domain 31)

TTC31 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=0.08550641).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TTC31	NM_022492.6 linkuse as main transcript	c.745C>A	p.Pro249Thr	missense_variant	8/13	ENST00000233623.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TTC31	ENST00000233623.11 linkuse as main transcript	c.745C>A	p.Pro249Thr	missense_variant	8/13	1	NM_022492.6	P1	Q49AM3-1

Frequencies

GnomAD3 genomes

AF:

0.000250

AC:

AN:

151868

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000484

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:

0.000500

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000116

AC:

AN:

249402

Hom.:

AF XY:

0.000118

AC XY:

AN XY:

135310

show subpopulations

Gnomad AFR exome

AF:

0.000129

Gnomad AMR exome

AF:

0.0000290

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:

0.000230

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000389

AC:

568

AN:

1461798

Hom.:

Cov.:

AF XY:

0.000358

AC XY:

260

AN XY:

727206

show subpopulations

Gnomad4 AFR exome

AF:

0.000179

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000488

Gnomad4 OTH exome

AF:

0.000298

GnomAD4 genome

AF:

0.000250

AC:

AN:

151868

Hom.:

Cov.:

AF XY:

0.000216

AC XY:

AN XY:

74124

show subpopulations

Gnomad4 AFR

AF:

0.0000484

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:

0.000500

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000318

Hom.:

Bravo

AF:

0.000246

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.000132

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.000593

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 16, 2021

The c.745C>A (p.P249T) alteration is located in exon 8 (coding exon 8) of the TTC31 gene. This alteration results from a C to A substitution at nucleotide position 745, causing the proline (P) at amino acid position 249 to be replaced by a threonine (T). 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

-0.37

BayesDel_noAF

Benign

-0.38

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0048

.;.;T

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.48

FATHMM_MKL

Benign

0.31

LIST_S2

Benign

0.76

T;T;T

M_CAP

Benign

0.013

MetaRNN

Benign

0.086

T;T;T

MetaSVM

Benign

-0.96

MutationAssessor

Benign

0.90

L;.;L

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.36

PROVEAN

Uncertain

-3.0

.;D;N

REVEL

Benign

0.041

Sift

Benign

0.074

.;T;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

0.61

.;.;P

Vest4

0.32

MVP

0.71

MPC

0.16

ClinPred

0.061

GERP RS

2.5

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.0

Varity_R

0.043

gMVP

0.19

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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