TRAPPC4
Chr 11ARtrafficking protein particle complex subunit 4
Also known as: CGI-104, HSPC172, NEDESBA, PTD009, SBDN, SYNBINDIN, TRS23
Primary Disease Associations & Inheritance
Neurodevelopmental disorder with epilepsy, spasticity, and brain atrophyMIM #618741
AR
Clinical highlights
Gene-disease validity (ClinGen)
neurodevelopmental disorder with epilepsy, spasticity, and brain atrophy · ARDefinitivesufficient evidence for diagnostic panels
Interpreting a novel variant
Loss of function is the curated mechanism (Gene2Phenotype), though the gene is not strongly LoF-constrained in the population — weigh truncating variants against that tolerance.Curated gene-level mechanism — a prior for triage, not a per-variant call.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Tolerant — LoF & missense variants common in population
LoF Constraint?
1.48LOEUF
pLI 0.000
Z-score 0.45
OE 0.85 (0.51–1.48)
Highly tolerant — LoF variants common in population
Missense Constraint?
0.43Z-score
OE missense 0.89 (0.76–1.04)
106 obs / 119.1 exp
Mild missense constraint
Observed / Expected Ratios?
LoF OE?0.85 (0.51–1.48)
0≤0.351.4
Missense OE?0.89 (0.76–1.04)
0≤0.61.4
Synonymous OE?1.46
0≤1.21.6
LoF obs/exp: 9 / 10.6Missense obs/exp: 106 / 119.1Syn Z: -2.49
ClinVar Variant Classifications
0 submitted variants in ClinVar
Protein Context — Lollipop Plot
TRAPPC4 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
External Resources
Links to major genomics databases and tools
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
No active trials found for this gene.
Search ClinicalTrials.gov →External Resources
Links to major genomics databases and tools