| Disease ID | Source | Name | Description |
| 616451 | OMIM | Spastic paraplegia 74, autosomal recessive (SPG74) | A form of spastic paraplegia, a neurodegenerative disorder characterized by a slow, gradual, progressive weakness and spasticity of the lower limbs. Rate of progression and the severity of symptoms are quite variable. Initial symptoms may include difficulty with balance, weakness and stiffness in the legs, muscle spasms, and dragging the toes when walking. In some forms of the disorder, bladder symptoms (such as incontinence) may appear, or the weakness and stiffness may spread to other parts of the body. SPG74 is characterized by a combination of spastic paraplegia, optic atrophy, and peripheral neuropathy with childhood-onset and slow progression into late adulthood. The disease is caused by variants affecting the gene represented in this entry. |
| 615330 | OMIM | Multiple mitochondrial dysfunctions syndrome 3 (MMDS3) | A severe disorder of systemic energy metabolism, resulting in weakness, respiratory failure, lack of neurologic development, lactic acidosis, hyperglycinemia and early death. Some patients show failure to thrive, pulmonary hypertension, hypotonia and irritability. Biochemical features include severe combined deficiency of the 2-oxoacid dehydrogenases, defective lipoic acid synthesis and reduction in activity of mitochondrial respiratory chain complexes. The disease is caused by variants affecting the gene represented in this entry. |