2-47046372-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_020458.4(TTC7A):c.1860C>T(p.Leu620Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00543 in 1,614,128 control chromosomes in the GnomAD database, including 424 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.028 ( 211 hom., cov: 33)

Exomes 𝑓: 0.0031 ( 213 hom. )

Consequence

TTC7A
NM_020458.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -3.33

Variant links:

Genes affected

TTC7A (HGNC:19750): (tetratricopeptide repeat domain 7A) This gene encodes a protein containing tetratricopeptide repeats. Mutations in this gene disrupt intestinal development and can cause early onset inflammatory bowel disease and intestinal atresia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

TTC7A links:

STPG4 (HGNC:26850): (sperm-tail PG-rich repeat containing 4) Predicted to enable chromatin binding activity and histone binding activity. Predicted to be involved in DNA demethylation of male pronucleus and positive regulation of DNA demethylation. Predicted to act upstream of or within C-5 methylation of cytosine. Predicted to be located in cytoplasm and nucleus. Predicted to be active in female pronucleus; germinal vesicle; and male pronucleus. [provided by Alliance of Genome Resources, Apr 2022]

STPG4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.62).

BP6

Variant 2-47046372-C-T is Benign according to our data. Variant chr2-47046372-C-T is described in ClinVar as [Benign]. Clinvar id is 458794.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-3.34 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0953 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TTC7A	NM_020458.4 link	c.1860C>T	p.Leu620Leu	synonymous_variant	Exon 16 of 20	ENST00000319190.11	NP_065191.2	Q9ULT0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TTC7A	ENST00000319190.11 link	c.1860C>T	p.Leu620Leu	synonymous_variant	Exon 16 of 20	2	NM_020458.4	ENSP00000316699.5		Q9ULT0-1

Frequencies

GnomAD3 genomes

AF:

0.0281

AC:

4268

AN:

152144

Hom.:

211

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0980

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00844

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00187

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000441

Gnomad OTH

AF:

0.0172

GnomAD3 exomes

AF:

0.00757

AC:

1904

AN:

251440

Hom.:

AF XY:

0.00584

AC XY:

794

AN XY:

135890

show subpopulations

Gnomad AFR exome

AF:

0.101

Gnomad AMR exome

AF:

0.00402

Gnomad ASJ exome

AF:

0.00129

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00189

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000299

Gnomad OTH exome

AF:

0.00326

GnomAD4 exome

AF:

0.00308

AC:

4500

AN:

1461866

Hom.:

213

Cov.:

AF XY:

0.00270

AC XY:

1965

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.105

Gnomad4 AMR exome

AF:

0.00465

Gnomad4 ASJ exome

AF:

0.00103

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00191

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000166

Gnomad4 OTH exome

AF:

0.00626

GnomAD4 genome

AF:

0.0281

AC:

4272

AN:

152262

Hom.:

211

Cov.:

AF XY:

0.0268

AC XY:

1994

AN XY:

74438

show subpopulations

Gnomad4 AFR

AF:

0.0978

Gnomad4 AMR

AF:

0.00843

Gnomad4 ASJ

AF:

0.000576

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00145

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000441

Gnomad4 OTH

AF:

0.0170

Alfa

AF:

0.0108

Hom.:

Bravo

AF:

0.0322

Asia WGS

AF:

0.0110

AC:

AN:

3478

EpiCase

AF:

0.000545

EpiControl

AF:

0.000178

ClinVar

Significance: Benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Jul 09, 2018

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

TTC7A-related disorder

Benign:1

Apr 01, 2019

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Multiple gastrointestinal atresias

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.62

CADD

Benign

1.4

DANN

Benign

0.82

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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