| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Myoclonic epilepsy with ragged red fibers | Is a | False | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Kearns-Sayre syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Mitochondrial-lipid-glycogen storage myopathy | Is a | False | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Juvenile myopathy, encephalopathy, lactic acidosis, stroke (disorder) | Is a | False | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Leber's optic atrophy | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| [X]Mitochondrial myopathy, not elsewhere classified | Is a | False | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| congenitale hyperammoniëmie type I (aandoening) | Is a | False | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Cytochrome-c oxidase deficiency | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Mitochondrial myopathy | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Histiocytoid mitochondrial cardiomyopathy due to cytochrome aa3 deficiency (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Mitochondrial cardiomyopathy (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 1 | 
| Hypertrophic mitochondrial cardiomyopathy (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 1 | 
| Histiocytoid mitochondrial cardiomyopathy (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Hypertrophic mitochondrial cardiomyopathy associated with cataracts and lactic acidosis (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 3 | 
| Fatal infantile mitochondrial cardiomyopathy (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Maternally inherited mitochondrial cardiomyopathy and myopathy | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 3 | 
| Family history of mitochondrial disease | Associated finding | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 1 | 
| Childhood myocerebrohepatopathy spectrum (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Mitochondrial metabolism defect | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Deficiency of mitochondrial complex III | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Autosomal dominant optic atrophy plus syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Sensory ataxic neuropathy with dysarthria and ophthalmoparesis syndrome (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 3 | 
| Maternally inherited mitochondrial dystonia (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Hypertrophic cardiomyopathy with hypotonia and lactic acidosis syndrome (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 3 | 
| Zellweger-like syndrome without peroxisomal anomaly (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Fatal mitochondrial disease due to combined oxidative phosphorylation deficiency 3 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Congenital cataract, hypertrophic cardiomyopathy, mitochondrial myopathy syndrome (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 3 | 
| MEHMO syndrome | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| syndroom van proximale tubulopathie, diabetes mellitus en cerebellaire ataxie (aandoening) | Is a | False | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Maternally inherited cardiomyopathy and hearing loss syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Infantile onset spinocerebellar ataxia (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 5 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Autosomal recessive ataxia due to ubiquinone deficiency (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Demyelination of central nervous system co-occurrent and due to mitochondrial disease (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 1 | 
| Demyelination of central nervous system co-occurrent and due to mitochondrial disease (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Epileptic encephalopathy with global cerebral demyelination (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 8 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Leukoencephalopathy with brain stem and spinal cord involvement and high lactate syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Liver disease co-occurrent and due to mitochondrial disorder (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Liver disease co-occurrent and due to mitochondrial disorder (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 13 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 15 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 7 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 9 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 21 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Encephalopathy, hypertrophic cardiomyopathy, renal tubular disease syndrome | Is a | False | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Leukoencephalopathy, thalamus and brainstem anomalies, high lactate syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 2 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 4 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Early-onset spastic ataxia, myoclonic epilepsy, neuropathy syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Infantile hypertrophic cardiomyopathy due to mitochondrial ribosomal protein L44 deficiency (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Infantile hypertrophic cardiomyopathy due to mitochondrial ribosomal protein L44 deficiency (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Hypertrophic cardiomyopathy and renal tubular disease due to mitochondrial deoxyribonucleic acid mutation (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 4 | 
| Mitochondrial hypertrophic cardiomyopathy with lactic acidosis due to MTO1 deficiency | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Mitochondrial hypertrophic cardiomyopathy with lactic acidosis due to MTO1 deficiency | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Severe neonatal lactic acidosis due to NFS1-ISD11 complex deficiency (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 14 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 17 (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Combined oxidative phosphorylation defect type 17 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Mitochondrially encoded ATP synthase membrane subunit 6-related mitochondrial spastic paraplegia (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Hyperuricemia, pulmonary hypertension, renal failure, alkalosis syndrome | Is a | False | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Lipoic acid synthetase deficiency (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Lipoyl transferase 1 deficiency (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Autosomal recessive optic atrophy type 7 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation deficiency type 20 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 11 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Autosomal recessive spastic ataxia, optic atrophy, dysarthria syndrome | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Gonadal dysgenesis with auditory dysfunction, autosomal recessive inheritance | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Autosomal dominant progressive external ophthalmoplegia (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Autosomal recessive progressive external ophthalmoplegia | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Maternally inherited diabetes and deafness (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Dilated cardiomyopathy due to mitochondrial disease | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Glomerular disease due to mitochondrial cytopathy | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Chronic diarrhea with villous atrophy syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Encephalopathy, hypertrophic cardiomyopathy, renal tubular disease syndrome | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 4 | 
| Ocular anomalies, axonal neuropathy, developmental delay syndrome | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Lethal left ventricular non-compaction, seizures, hypotonia, cataract, developmental delay syndrome | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 4 | 
| Combined oxidative phosphorylation defect type 30 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 29 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 27 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 26 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 25 (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 23 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 23 | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 4 | 
| Neonatal encephalomyopathy, cardiomyopathy, respiratory distress syndrome (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 5 | 
| Maternally inherited mitochondrial myopathy (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Maternally inherited mitochondrial cardiomyopathy (disorder) | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| Non-syndromic mitochondrial sensorineural deafness (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 28 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| QRSL1-related combined oxidative phosphorylation defect | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| QRSL1-related combined oxidative phosphorylation defect | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 3 | 
| Cataract, growth hormone deficiency, sensory neuropathy, sensorineural hearing loss, skeletal dysplasia syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Non-progressive predominantly posterior cavitating leukodystrophy with peripheral neuropathy (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Auditory neuropathy, optic atrophy syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Optic atrophy, ataxia, peripheral neuropathy, global developmental delay syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Combined oxidative phosphorylation defect type 24 | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Mitochondrial enoyl coenzyme A reductase protein-associated neurodegeneration syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Encephalopathy due to mitochondrial and peroxisomal fission defect (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Hydrops, lactic acidosis, sideroblastic anemia, multisystemic failure syndrome (disorder) | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  | 
| Chorea due to mitochondrial cytopathy | Due to | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some | 2 | 
| WARS2-related combined oxidative phosphorylation defect | Is a | True | Mitochondrial cytopathy (disorder) | Inferred relationship | Some |  |