8-139732122-G-C

Position:

• chr8-139732122-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001160372.4(TRAPPC9):​c.3136C>G​(p.Arg1046Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,453,578 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: TRAPPC9 NM_001160372.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.60

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TRAPPC9	NM_001160372.4	c.3136C>G	p.Arg1046Gly	missense_variant	22/23	ENST00000438773.4	NP_001153844.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TRAPPC9	ENST00000438773.4	c.3136C>G	p.Arg1046Gly	missense_variant	22/23	1	NM_001160372.4	ENSP00000405060.3

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD3 exomes AF: 0.00000430 AC: 1 AN: 232652 Hom.: 0 AF XY: 0.00000790 AC XY: 1 AN XY: 126514

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: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000959

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1453578 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 722390

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.02e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

Alfa AF: 0.0000243 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.0074	T
BayesDel_noAF	Benign	-0.25
CADD	Uncertain	26
DANN	Benign	0.96
DEOGEN2	Benign	0.024	T;T;.;T
Eigen	Benign	-0.22
Eigen_PC	Benign	-0.13
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Uncertain	0.90	.;.;D;D
M_CAP	Benign	0.0085	T
MetaRNN	Benign	0.25	T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.0	N;N;.;N
PrimateAI	Benign	0.45	T
PROVEAN	Benign	0.28	.;N;N;.
REVEL	Benign	0.17
Sift	Benign	0.49	.;T;T;.
Sift4G	Benign	0.14	.;T;T;.
Polyphen		0.36	B;B;P;B
Vest4		0.63, 0.64
MutPred		0.46		Loss of MoRF binding (P = 0.0156);Loss of MoRF binding (P = 0.0156);.;Loss of MoRF binding (P = 0.0156);
MVP		0.37
MPC		0.45
ClinPred		0.33	T
GERP RS		2.4
Varity_R		0.16
gMVP		0.86

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.37		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.37		Position offset: 28

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

Publications

LitVar

Other links and lift over

dbSNP: rs376617920; hg19: chr8-140744365;