FAM124B
Chr 2family with sequence similarity 124 member B
FAM124B encodes a protein that localizes to mitochondria and the nucleoplasm, though its specific function remains unclear. Mutations cause autosomal recessive developmental and epileptic encephalopathy with onset in infancy, characterized by severe intellectual disability, refractory seizures, and progressive brain atrophy. The gene shows low constraint against loss-of-function variants, consistent with the recessive inheritance pattern observed in affected individuals.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Highly tolerant — LoF variants common in population
Mild missense constraint
ClinVar Variant Classifications
100 submitted variants in ClinVar
Classification Summary
Curated Variants Distribution
Classified variants from ClinVar · 5 ACMG categories
| Classification | LoF | Missense + Inframe | Non-coding | Synonymous | Total |
|---|---|---|---|---|---|
Pathogenic | 0 | 0 | 28 | 0 | 28 |
Likely Pathogenic | 0 | 0 | 1 | 0 | 1 |
VUS | 0 | 61 | 2 | 0 | 63 |
Likely Benign | 0 | 6 | 0 | 1 | 7 |
Benign | 0 | 0 | 0 | 0 | 0 |
| Total | 0 | 67 | 31 | 1 | 99 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
FAM124B · 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