chr8-140451083-C-G

Variant names:

• chr8-140451083-C-G
• rs1554689955
• NM_001160372.4:c.291G>C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001160372.4(TRAPPC9):​c.291G>C​(p.Glu97Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,804 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: TRAPPC9 NM_001160372.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.52

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18764862).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRAPPC9	NM_001160372.4	c.291G>C	p.Glu97Asp	missense_variant	Exon 2 of 23	ENST00000438773.4	NP_001153844.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRAPPC9	ENST00000438773.4	c.291G>C	p.Glu97Asp	missense_variant	Exon 2 of 23	1	NM_001160372.4	ENSP00000405060.3
TRAPPC9	ENST00000648948.2	c.291G>C	p.Glu97Asp	missense_variant	Exon 2 of 23			ENSP00000498020.1
TRAPPC9	ENST00000520857.5	c.-154G>C		upstream_gene_variant		1		ENSP00000430116.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461804 Hom.: 0 Cov.: 77 AF XY: 0.00 AC XY: 0 AN XY: 727200

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Apr 10, 2017

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.049	T;T;.;T
Eigen	Benign	-0.22
Eigen_PC	Benign	-0.098
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.83	.;.;T;T
M_CAP	Benign	0.0085	T
MetaRNN	Benign	0.19	T;T;T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	0.81	L;L;.;L
PrimateAI	Uncertain	0.64	T
PROVEAN	Benign	-1.6	.;N;N;.
REVEL	Benign	0.16
Sift	Benign	0.18	.;T;T;.
Sift4G	Benign	0.26	.;T;T;.
Polyphen		0.43	B;B;B;B
Vest4		0.24, 0.20
MutPred		0.31		Loss of helix (P = 0.0376);Loss of helix (P = 0.0376);.;Loss of helix (P = 0.0376);
MVP		0.19
MPC		1.3
ClinPred		0.73	D
GERP RS		4.5
Varity_R		0.097
gMVP		0.44

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

Other links and lift over

dbSNP: rs1554689955; hg19: chr8-141461182;