8-139732033-G-A

Position:

• chr8-139732033-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_001160372.4(TRAPPC9):​c.3225C>T​(p.Tyr1075=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00209 in 1,604,026 control chromosomes in the GnomAD database, including 51 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.010 (26 hom., cov: 33)
  • Exomes 𝑓: 0.0012 (25 hom.)
• Consequence: TRAPPC9 NM_001160372.4 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6
• Conservation: PhyloP100: -0.123

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 Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.48).
• BP6: Variant 8-139732033-G-A is Benign according to our data. Variant chr8-139732033-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 130631.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0101 (1536/152312) while in subpopulation AFR AF= 0.0351 (1461/41570). AF 95% confidence interval is 0.0336. There are 26 homozygotes in gnomad4. There are 683 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 26 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TRAPPC9	NM_001160372.4	c.3225C>T	p.Tyr1075=	synonymous_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.3225C>T	p.Tyr1075=	synonymous_variant	22/23	1	NM_001160372.4	ENSP00000405060	P1

Frequencies

GnomAD3 genomes AF: 0.0100 AC: 1525 AN: 152194 Hom.: 24 Cov.: 33

Gnomad AFR AF: 0.0350

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00281

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000309

Gnomad OTH AF: 0.00383

GnomAD3 exomes AF: 0.00246 AC: 566 AN: 230478 Hom.: 12 AF XY: 0.00182 AC XY: 227 AN XY: 124556

Gnomad AFR exome AF: 0.0332

Gnomad AMR exome AF: 0.00173

Gnomad ASJ exome AF: 0.000104

Gnomad EAS exome AF: 0.0000576

Gnomad SAS exome AF: 0.000212

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000232

Gnomad OTH exome AF: 0.000882

GnomAD4 exome AF: 0.00125 AC: 1813 AN: 1451714 Hom.: 25 Cov.: 32 AF XY: 0.00107 AC XY: 772 AN XY: 721034

Gnomad4 AFR exome AF: 0.0372

Gnomad4 AMR exome AF: 0.00184

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000255

Gnomad4 SAS exome AF: 0.000119

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000313

Gnomad4 OTH exome AF: 0.00212

GnomAD4 genome AF: 0.0101 AC: 1536 AN: 152312 Hom.: 26 Cov.: 33 AF XY: 0.00917 AC XY: 683 AN XY: 74484

Gnomad4 AFR AF: 0.0351

Gnomad4 AMR AF: 0.00281

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000309

Gnomad4 OTH AF: 0.00379

Alfa AF: 0.00319 Hom.: 5

Bravo AF: 0.0109

Asia WGS AF: 0.00375 AC: 13 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 16, 2020	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

not specified Benign:1

Likely benign, no assertion criteria provided

clinical testing

Genetic Services Laboratory, University of Chicago

-

Likely benign based on allele frequency in 1000 Genomes Project or ESP global frequency and its presence in a patient with a rare or unrelated disease phenotype. NOT Sanger confirmed. -

Inborn genetic diseases Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

May 14, 2016

This alteration is classified as 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, Recessive Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.48
CADD	Benign	4.8
DANN	Benign	0.76

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: rs58740567; hg19: chr8-140744276; COSMIC: COSV66900375; COSMIC: COSV66900375;