Genetic Variant TRAPPC9:p.Phe1083Leu (chr8-139732009-G-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001160372.4(TRAPPC9):c.3249C>A(p.Phe1083Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000139 in 1,443,760 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Synonymous variant affecting the same amino acid position (i.e. F1083F) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

TRAPPC9
NM_001160372.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.51

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

intellectual disability, autosomal recessive 13
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
intellectual disability-obesity-brain malformations-facial dysmorphism syndrome
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
autosomal recessive non-syndromic intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

TRAPPC9 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.37194788).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRAPPC9	NM_001160372.4 link	c.3249C>A	p.Phe1083Leu	missense_variant	Exon 22 of 23	ENST00000438773.4	NP_001153844.1	Q96Q05-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRAPPC9	ENST00000438773.4 link	c.3249C>A	p.Phe1083Leu	missense_variant	Exon 22 of 23	1	NM_001160372.4	ENSP00000405060.3		Q96Q05-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000457

AC:

AN:

218814

AF XY:

0.00000848

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000103

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000139

AC:

AN:

1443760

Hom.:

Cov.:

AF XY:

0.00000140

AC XY:

AN XY:

716258

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33156

American (AMR)

AF:

0.00

AC:

AN:

42396

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25714

East Asian (EAS)

AF:

0.00

AC:

AN:

38852

South Asian (SAS)

AF:

0.00

AC:

AN:

83238

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51922

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5744

European-Non Finnish (NFE)

AF:

0.00000181

AC:

AN:

1103076

Other (OTH)

AF:

0.00

AC:

AN:

59662

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000827

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.86

BayesDel_addAF

Pathogenic

0.26

BayesDel_noAF

Uncertain

0.13

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.030

T;T;.;T

Eigen

Benign

-0.45

Eigen_PC

Benign

-0.46

FATHMM_MKL

Uncertain

0.84

LIST_S2

Benign

0.73

.;.;T;T

M_CAP

Benign

0.022

MetaRNN

Benign

0.37

T;T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.6

L;L;.;L

PhyloP100

1.5

PrimateAI

Uncertain

0.75

PROVEAN

Benign

-0.34

.;N;N;.

REVEL

Benign

0.21

Sift

Benign

0.22

.;T;T;.

Sift4G

Benign

0.72

.;T;T;.

Polyphen

0.68

P;P;B;P

Vest4

0.95, 0.92

MutPred

0.72

Gain of sheet (P = 0.0827);Gain of sheet (P = 0.0827);.;Gain of sheet (P = 0.0827);

MVP

0.18

MPC

0.41

ClinPred

0.22

GERP RS

0.40

Varity_R

0.12

gMVP

0.74

Mutation Taster

=62/38

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over