Variant 20-37999319-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001303457.2(TTI1):c.2662G>A(p.Val888Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000243 in 1,422,644 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00025 ( 0 hom. )

Consequence

TTI1
NM_001303457.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.23

Variant links:

Genes affected

TTI1 (HGNC:29029): (TELO2 interacting protein 1) Involved in regulation of TOR signaling. Located in cytoplasm. Part of TORC1 complex and TORC2 complex. [provided by Alliance of Genome Resources, Apr 2022]

TTI1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TTI1	NM_001303457.2 linkuse as main transcript	c.2662G>A	p.Val888Met	missense_variant	5/8	ENST00000373447.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
TTI1	ENST00000373447.8 linkuse as main transcript	c.2662G>A	p.Val888Met	missense_variant	5/8	1	NM_001303457.2	P1
TTI1	ENST00000373448.6 linkuse as main transcript	c.2662G>A	p.Val888Met	missense_variant	6/9	1		P1
TTI1	ENST00000449821.1 linkuse as main transcript	c.2662G>A	p.Val888Met	missense_variant	4/7	2		P1
TTI1	ENST00000473288.1 linkuse as main transcript	n.121G>A		non_coding_transcript_exon_variant	2/4	5

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

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:

0.000265

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000909

AC:

AN:

142948

Hom.:

AF XY:

0.000117

AC XY:

AN XY:

77026

show subpopulations

Gnomad AFR exome

AF:

0.000183

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:

0.000149

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000254

AC:

323

AN:

1270424

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

151

AN XY:

622778

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.00

Gnomad4 NFE exome

AF:

0.000304

Gnomad4 OTH exome

AF:

0.000313

GnomAD4 genome

AF:

0.000151

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.000121

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:

0.000265

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000199

Hom.:

Bravo

AF:

0.000113

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.0000991

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 21, 2022

The c.2662G>A (p.V888M) alteration is located in exon 6 (coding exon 4) of the TTI1 gene. This alteration results from a G to A substitution at nucleotide position 2662, causing the valine (V) at amino acid position 888 to be replaced by a methionine (M). 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

-0.089

BayesDel_noAF

Benign

-0.090

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.048

T;T;T

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Uncertain

0.94

M_CAP

Benign

0.064

MetaRNN

Uncertain

0.63

D;D;D

MetaSVM

Uncertain

-0.27

MutationAssessor

Uncertain

2.3

M;M;M

MutationTaster

Benign

0.93

D;D;D

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.6

N;N;N

REVEL

Uncertain

0.34

Sift

Uncertain

0.012

D;D;D

Sift4G

Uncertain

0.0080

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.77

MVP

0.72

MPC

0.62

ClinPred

0.22

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.091

gMVP

0.38

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