X-13713450-CAA-CAAAAAA

Variant names:

• chrX-13713450-C-CAAAA
• rs57103709
• NM_001011658.4:c.*953_*956dupTTTT

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BS1 BS2

The NM_001011658.4(TRAPPC2):​c.*953_*956dupTTTT variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.00044 (0 hom., 6 hem., cov: 0)
  • Exomes 𝑓: 0.0 (0 hom. 0 hem.)
  • Failed GnomAD Quality Control
• Consequence: TRAPPC2 NM_001011658.4 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.240

Genes affected

TRAPPC2 (HGNC:23068): (trafficking protein particle complex subunit 2) The protein encoded by this gene is thought to be part of a large multi-subunit complex involved in the targeting and fusion of endoplasmic reticulum-to-Golgi transport vesicles with their acceptor compartment. In addition, the encoded protein can bind c-myc promoter-binding protein 1 and block its transcriptional repression capability. Mutations in this gene are a cause of spondyloepiphyseal dysplasia tarda (SEDT). A processed pseudogene of this gene is located on chromosome 19, and other pseudogenes are found on chromosomes 8 and Y. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Mar 2010]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000437 (37/84742) while in subpopulation AFR AF= 0.00165 (34/20657). AF 95% confidence interval is 0.00121. There are 0 homozygotes in gnomad4. There are 6 alleles in male gnomad4 subpopulation. Median coverage is 0. This position pass quality control queck.
• BS2: High Hemizygotes in GnomAd4 at 6 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRAPPC2	NM_001011658.4	c.*953_*956dupTTTT		3_prime_UTR_variant	Exon 6 of 6	ENST00000380579.6	NP_001011658.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRAPPC2	ENST00000380579	c.*953_*956dupTTTT		3_prime_UTR_variant	Exon 6 of 6	1	NM_001011658.4	ENSP00000369953.1
TRAPPC2	ENST00000683983	c.*953_*956dupTTTT		3_prime_UTR_variant	Exon 6 of 6			ENSP00000507474.1
TRAPPC2	ENST00000359680	c.*953_*956dupTTTT		3_prime_UTR_variant	Exon 5 of 5	1		ENSP00000352708.5
TRAPPC2	ENST00000683569	c.*953_*956dupTTTT		3_prime_UTR_variant	Exon 7 of 7			ENSP00000508155.1

Frequencies

GnomAD3 genomes AF: 0.000437 AC: 37 AN: 84764 Hom.: 0 Cov.: 0 AF XY: 0.000365 AC XY: 6 AN XY: 16440

Gnomad AFR AF: 0.00165

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000144

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000389

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000217

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 22 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 14

Gnomad4 AMR exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.000437 AC: 37 AN: 84742 Hom.: 0 Cov.: 0 AF XY: 0.000365 AC XY: 6 AN XY: 16442

Gnomad4 AFR AF: 0.00165

Gnomad4 AMR AF: 0.000144

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000391

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000217

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs57103709; hg19: chrX-13731569;