| Disease ID | Source | Name | Description |
| 616860 | OMIM | Anemia, sideroblastic, 3, pyridoxine-refractory (SIDBA3) | A form of sideroblastic anemia, a bone marrow disorder defined by the presence of pathologic iron deposits in erythroblast mitochondria. Sideroblastic anemia is characterized by anemia of varying severity, hypochromic peripheral erythrocytes, systemic iron overload secondary to chronic ineffective erythropoiesis, and the presence of bone marrow ringed sideroblasts. Sideroblasts are characterized by iron-loaded mitochondria clustered around the nucleus. SIDBA3 is refractory to treatment with vitamin B6, while iron chelation therapy may result in clinical improvement. SIDBA3 inheritance is autosomal recessive. The disease is caused by variants affecting the gene represented in this entry. |
| 616859 | OMIM | Spasticity, childhood-onset, with hyperglycinemia (SPAHGC) | An autosomal recessive disorder characterized by childhood-onset of spasticity, spinal lesions, leukodystrophy, optic atrophy in some patients, non-ketotic hyperglycinemia, and defective enzymatic glycine cleavage. Glycine levels in the cerebrospinal fluid are mildly increased in some but not all patients. The increase is less pronounced than in patients with classic non-ketotic hyperglycinemia. The disease is caused by variants affecting the gene represented in this entry. |