Variant chr8-33499261-A-C 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_001102401.4(TTI2):c.1439T>G(p.Ile480Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,730 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

TTI2
NM_001102401.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.388

Variant links:

Genes affected

TTI2 (HGNC:26262): (TELO2 interacting protein 2) This gene encodes a regulator of the DNA damage response. The protein is a component of the Triple T complex (TTT) which also includes telomere length regulation protein and TELO2 interacting protein 1. The TTT complex is involved in cellular resistance to DNA damage stresses and may act as a regulator of phosphoinositide-3-kinase-related protein kinase (PIKK) abundance. [provided by RefSeq, May 2013]

TTI2 links:

MAK16 (HGNC:13703): (MAK16 homolog) Enables RNA binding activity. Predicted to be involved in maturation of 5.8S rRNA and maturation of LSU-rRNA. Located in nucleolus. [provided by Alliance of Genome Resources, Apr 2022]

MAK16 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=0.10903984).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TTI2	NM_001102401.4 linkuse as main transcript	c.1439T>G	p.Ile480Ser	missense_variant	8/8	ENST00000431156.7
MAK16	NM_032509.4 linkuse as main transcript	c.*632A>C		3_prime_UTR_variant	10/10	ENST00000360128.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TTI2	ENST00000431156.7 linkuse as main transcript	c.1439T>G	p.Ile480Ser	missense_variant	8/8	1	NM_001102401.4	P1
MAK16	ENST00000360128.11 linkuse as main transcript	c.*632A>C		3_prime_UTR_variant	10/10	1	NM_032509.4	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251420

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135890

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

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

AF:

0.00000274

AC:

AN:

1461730

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727166

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000894

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000113

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

Mar 04, 2024

The c.1439T>G (p.I480S) alteration is located in exon 7 (coding exon 7) of the TTI2 gene. This alteration results from a T to G substitution at nucleotide position 1439, causing the isoleucine (I) at amino acid position 480 to be replaced by a serine (S). 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

0.27

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.010

T;T;T;.

Eigen

Benign

-0.53

Eigen_PC

Benign

-0.57

FATHMM_MKL

Benign

0.16

LIST_S2

Benign

0.76

T;.;.;T

M_CAP

Benign

0.027

MetaRNN

Benign

0.11

T;T;T;T

MetaSVM

Benign

-0.92

MutationAssessor

Uncertain

2.4

M;M;M;.

MutationTaster

Benign

1.0

N;N;N;N;N;N

PrimateAI

Benign

0.43

PROVEAN

Benign

-1.2

.;N;N;N

REVEL

Benign

0.050

Sift

Uncertain

0.0060

.;D;D;D

Sift4G

Uncertain

0.0080

D;D;D;D

Polyphen

0.34

B;B;B;P

Vest4

0.32

MutPred

0.49

Gain of disorder (P = 0.0016);Gain of disorder (P = 0.0016);Gain of disorder (P = 0.0016);.;

MVP

0.40

MPC

0.21

ClinPred

0.42

GERP RS

1.9

Varity_R

0.067

gMVP

0.33

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