rs587780482

Variant names:

• chr8-140221475-T-G
• rs587780482
• NM_001160372.4:c.2540A>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001160372.4(TRAPPC9):​c.2540A>C​(p.Asp847Ala) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D847N) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TRAPPC9 NM_001160372.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.65
• Publications: 0 publications found

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: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
• intellectual disability-obesity-brain malformations-facial dysmorphism syndrome

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• autosomal recessive non-syndromic intellectual disability

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

LOC124902029 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25975287).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001160372.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRAPPC9	NM_001160372.4	MANE Select	c.2540A>C	p.Asp847Ala	missense	Exon 17 of 23	NP_001153844.1	Q96Q05-1
	TRAPPC9	NM_001374682.1		c.2561A>C	p.Asp854Ala	missense	Exon 18 of 24	NP_001361611.1
	TRAPPC9	NM_031466.8		c.2540A>C	p.Asp847Ala	missense	Exon 17 of 23	NP_113654.5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRAPPC9	ENST00000438773.4	TSL:1 MANE Select	c.2540A>C	p.Asp847Ala	missense	Exon 17 of 23	ENSP00000405060.3	Q96Q05-1
	TRAPPC9	ENST00000520857.5	TSL:1	c.2069A>C	p.Asp690Ala	missense	Exon 15 of 21	ENSP00000430116.1	H0YBR0
	TRAPPC9	ENST00000521667.5	TSL:1	n.945A>C		non_coding_transcript_exon	Exon 6 of 12

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Uncertain	0.020	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	21
DANN	Benign	0.74
DEOGEN2	Benign	0.025	T
Eigen	Benign	-0.32
Eigen_PC	Benign	-0.18
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.71	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.26	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.0	L
PhyloP100		5.7
PrimateAI	Benign	0.38	T
PROVEAN	Benign	-1.4	N
REVEL	Benign	0.21
Sift	Benign	0.56	T
Sift4G	Benign	0.076	T
Polyphen		0.48	P
Vest4		0.64
MutPred		0.49		Loss of loop (P = 0.0235)
MVP		0.20
MPC		0.19
ClinPred		0.69	D
GERP RS		5.5
Varity_R		0.17
gMVP		0.37
Mutation Taster		=68/32	polymorphism

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

Other links and lift over

dbSNP: rs587780482; hg19: chr8-141231574;