Variant chr14-90618007-C-T 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_001010854.2(TTC7B):c.1790G>A(p.Arg597Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000479 in 1,461,528 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

TTC7B
NM_001010854.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.10

Variant links:

Genes affected

TTC7B (HGNC:19858): (tetratricopeptide repeat domain 7B) Involved in phosphatidylinositol phosphate biosynthetic process and protein localization to plasma membrane. Located in cytosol and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

TTC7B links:

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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=0.15204072).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
TTC7B	NM_001010854.2 linkuse as main transcript	c.1790G>A	p.Arg597Gln	missense_variant	16/20	ENST00000328459.11
TTC7B	NM_001401365.1 linkuse as main transcript	c.1790G>A	p.Arg597Gln	missense_variant	16/22
TTC7B	NM_001320421.2 linkuse as main transcript	c.1484G>A	p.Arg495Gln	missense_variant	16/21

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TTC7B	ENST00000328459.11 linkuse as main transcript	c.1790G>A	p.Arg597Gln	missense_variant	16/20	1	NM_001010854.2	P1	Q86TV6-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251454

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135900

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461528

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727002

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000165

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

Jul 05, 2023

The c.1790G>A (p.R597Q) alteration is located in exon 16 (coding exon 16) of the TTC7B gene. This alteration results from a G to A substitution at nucleotide position 1790, causing the arginine (R) at amino acid position 597 to be replaced by a glutamine (Q). 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

0.069

BayesDel_addAF

Benign

-0.081

BayesDel_noAF

Benign

-0.15

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.024

T;T;T

Eigen

Benign

-0.12

Eigen_PC

Benign

0.022

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.91

D;D;D

M_CAP

Benign

0.035

MetaRNN

Benign

0.15

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.81

L;.;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.57

PROVEAN

Benign

-0.56

N;N;N

REVEL

Benign

0.17

Sift

Benign

0.32

T;T;T

Sift4G

Benign

0.29

T;T;T

Polyphen

0.93

P;.;.

Vest4

0.42

MVP

0.29

MPC

0.41

ClinPred

0.18

GERP RS

5.5

Varity_R

0.42

gMVP

0.45

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