chr8-140311306-C-T

Position:

chr8-140311306-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001160372.4(TRAPPC9):c.1564G>A(p.Ala522Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00039 in 1,613,774 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00041 ( 1 hom. )

Consequence

TRAPPC9
NM_001160372.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:2

Conservation

PhyloP100: 3.51

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:

TRAPPC9 (HGNC:):

TRAPPC9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04399711).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TRAPPC9	NM_001160372.4 linkuse as main transcript	c.1564G>A	p.Ala522Thr	missense_variant	10/23	ENST00000438773.4	NP_001153844.1	Q96Q05-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
TRAPPC9	ENST00000438773.4 linkuse as main transcript	c.1564G>A	p.Ala522Thr	missense_variant	10/23	1	NM_001160372.4	ENSP00000405060.3	Q96Q05-1
TRAPPC9	ENST00000520857.5 linkuse as main transcript	c.1093G>A	p.Ala365Thr	missense_variant	8/21	1		ENSP00000430116.1	H0YBR0
TRAPPC9	ENST00000648948.2 linkuse as main transcript	c.1564G>A	p.Ala522Thr	missense_variant	10/23			ENSP00000498020.1	Q96Q05-1

Frequencies

GnomAD3 genomes

AF:

0.000237

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000514

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000267

AC:

AN:

251120

Hom.:

AF XY:

0.000258

AC XY:

AN XY:

135768

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000545

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000406

AC:

593

AN:

1461446

Hom.:

Cov.:

AF XY:

0.000407

AC XY:

296

AN XY:

727098

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.0000765

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000566

Gnomad4 NFE exome

AF:

0.000502

Gnomad4 OTH exome

AF:

0.000447

GnomAD4 genome

AF:

0.000236

AC:

AN:

152328

Hom.:

Cov.:

AF XY:

0.000282

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.0000240

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:

0.000515

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000399

Hom.:

Bravo

AF:

0.000200

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.000214

AC:

EpiCase

AF:

0.000600

EpiControl

AF:

0.000178

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jul 26, 2022	This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 620 of the TRAPPC9 protein (p.Ala620Thr). This variant is present in population databases (rs148453804, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with TRAPPC9-related conditions. ClinVar contains an entry for this variant (Variation ID: 212417). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The threonine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Jul 16, 2021	Has not been previously published as pathogenic or benign to our knowledge; In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 27535533) -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Mar 04, 2015

- -

Intellectual disability, autosomal recessive 13

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Feb 05, 2018

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 30, 2022

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Intellectual disability

Benign:1

Likely benign, no assertion criteria provided

clinical testing

Centre de Biologie Pathologie Génétique, Centre Hospitalier Universitaire de Lille

Jan 01, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.056

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.41

CADD

Benign

DANN

Benign

0.56

DEOGEN2

Benign

0.016

T;T;.;T

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.69

FATHMM_MKL

Benign

0.25

LIST_S2

Benign

0.79

.;.;T;T

M_CAP

Benign

0.0030

MetaRNN

Benign

0.044

T;T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

-1.4

N;N;.;N

PrimateAI

Benign

0.37

PROVEAN

Benign

0.17

.;N;N;.

REVEL

Benign

0.10

Sift

Benign

0.58

.;T;T;.

Sift4G

Benign

1.0

.;T;T;.

Polyphen

0.0010

B;B;B;B

Vest4

0.19, 0.21

MVP

0.067

MPC

0.48

ClinPred

0.025

GERP RS

0.16

Varity_R

0.031

gMVP

0.29

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