chr8-140451111-G-A

Position:

chr8-140451111-G-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_001160372.4(TRAPPC9):c.263C>T(p.Ser88Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000914 in 1,614,064 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00068 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00094 ( 1 hom. )

Consequence

TRAPPC9
NM_001160372.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:9B:2

Conservation

PhyloP100: 7.89

Variant links:

Genes affected

TRAPPC9 (HGNC:30832): (trafficking protein particle complex subunit 9) This gene encodes a protein that likely plays a role in NF-kappa-B signaling. Mutations in this gene have been associated with autosomal-recessive cognitive disability. Alternatively spliced transcript variants have been described.[provided by RefSeq, Feb 2010]

TRAPPC9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0205445).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000683 (104/152234) while in subpopulation NFE AF= 0.00109 (74/68016). AF 95% confidence interval is 0.000889. There are 0 homozygotes in gnomad4. There are 56 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRAPPC9	NM_001160372.4 linkuse as main transcript	c.263C>T	p.Ser88Leu	missense_variant	2/23	ENST00000438773.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TRAPPC9	ENST00000438773.4 linkuse as main transcript	c.263C>T	p.Ser88Leu	missense_variant	2/23	1	NM_001160372.4	P1	Q96Q05-1
TRAPPC9	ENST00000648948.2 linkuse as main transcript	c.263C>T	p.Ser88Leu	missense_variant	2/23			P1	Q96Q05-1

Frequencies

GnomAD3 genomes

AF:

0.000684

AC:

104

AN:

152118

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00207

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00109

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000676

AC:

170

AN:

251454

Hom.:

AF XY:

0.000625

AC XY:

AN XY:

135900

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00152

Gnomad NFE exome

AF:

0.00114

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000938

AC:

1371

AN:

1461830

Hom.:

Cov.:

AF XY:

0.000854

AC XY:

621

AN XY:

727212

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000696

Gnomad4 FIN exome

AF:

0.00193

Gnomad4 NFE exome

AF:

0.00109

Gnomad4 OTH exome

AF:

0.000695

GnomAD4 genome

AF:

0.000683

AC:

104

AN:

152234

Hom.:

Cov.:

AF XY:

0.000752

AC XY:

AN XY:

74446

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00207

Gnomad4 NFE

AF:

0.00109

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000945

Hom.:

Bravo

AF:

0.000533

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00140

AC:

ExAC

AF:

0.000848

AC:

103

EpiCase

AF:

0.000382

EpiControl

AF:

0.000948

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:9Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Intellectual disability, autosomal recessive 13

Uncertain:4

Uncertain significance, criteria provided, single submitter	research	HudsonAlpha Institute for Biotechnology, HudsonAlpha Institute for Biotechnology	Jul 03, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Apr 18, 2020	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Oct 31, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Baylor Genetics	Jul 31, 2018	This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

not provided

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 21, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Aug 30, 2024	In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Jan 16, 2015

- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 18, 2017

The p.S186L variant (also known as c.557C>T), located in coding exon 2 of the TRAPPC9 gene, results from a C to T substitution at nucleotide position 557. The serine at codon 186 is replaced by leucine, an amino acid with dissimilar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Intellectual Disability, Recessive

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Intellectual disability

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Centre de Biologie Pathologie Génétique, Centre Hospitalier Universitaire de Lille

Jan 01, 2019

- -

TRAPPC9-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Nov 01, 2022

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

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.073

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.22

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.21

T;T;.;T

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.86

.;.;D;D

M_CAP

Benign

0.0053

MetaRNN

Benign

0.021

T;T;T;T

MetaSVM

Benign

-0.77

MutationAssessor

Benign

1.4

L;L;.;L

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-3.1

.;D;D;.

REVEL

Benign

0.15

Sift

Uncertain

0.0050

.;D;T;.

Sift4G

Uncertain

0.0070

.;D;D;.

Polyphen

0.97

D;D;P;D

Vest4

0.46, 0.43

MVP

0.39

MPC

0.46

ClinPred

0.051

GERP RS

5.3

Varity_R

0.21

gMVP

0.56

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