| Disease ID | Source | Name | Description |
| 617899 | OMIM | Leukodystrophy, hypomyelinating, 14 (HLD14) | An autosomal recessive, severe disorder characterized by atrophy of the basal ganglia and cerebellum, hypomyelination, severe developmental delay, typically without intentional movements and language development, and microcephaly. Almost all patients exhibit spasticity, extrapyramidal movement abnormalities, and severe drug-resistant epilepsy. Disease onset is early in infancy, and most patients die in the first years of life. The disease is caused by variants affecting the gene represented in this entry. The disease-causing variant may be a homozygous 3-bp deletion in the promoter region of the UFM1 gene, which segregates with the disorder in affected families. In vitro expression studies in different cell lines showed that the mutation significantly reduces transcriptional activity in certain neuronal cell lines (SY5Y and U373), but not in other cell lines, including HeLa and HOF-F2. |