{"Name":"Combined oxidative phosphorylation defect type 20","DiseaseID__c":"GARD:0017699","id":17699,"encodedName":"combined-oxidative-phosphorylation-defect-type-20","IsDeleted":false,"Disease_Name_Full__c":"Combined oxidative phosphorylation defect type 20","Xref_IDs__c":"C4014660; DOID:0111478; MEDGEN:863097; MONDO:0014397; OMIM:615917; ORPHA:420728","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":3,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":0,"World_Estimate__c":"1 to 8,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":4,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0014397","Disease_Description__c":"Any combined oxidative phosphorylation deficiency in which the cause of the disease is a mutation in the VARS2 gene.","GARD_Name__c":"Combined oxidative phosphorylation defect type 20","GARD_Synonym__c":"combined oxidative phosphorylation deficiency 20; combined oxidative phosphorylation deficiency caused by mutation in vars2; combined oxidative phosphorylation deficiency type 20; coxpd20; vars2 combined oxidative phosphorylation deficiency","Curated_Disease_Description_Source__c":"ORPHA:420728","Curated_Disease_Description__c":"Combined oxidative phosphorylation defect type 20 is a rare mitochondrial oxidative phosphorylation disorder characterized by variable combination of psychomotor delay, hypotonia, muscle weakness, seizures, microcephaly, cardiomyopathy and mild dysmorphic facial features. Variable types of structural brain anomalies have also been reported. Biochemical studies typically show decreased activity of mitochondrial complexes (mainly complex I).","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as an Infant","SourceID__c":"ORPHA:420728","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0014397","ORPHANET_ID__c":"ORPHA:420728","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Deficiencia combinada de la fosforilación oxidativa tipo 20","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"deficiencia combinada de la fosforilación oxidativa tipo 20","Spanish_GARD_Synonym__c":"coxpd20","Category_Linearization__c":"ORPHA:68367","icd10_id__c":null,"mesh_id__c":null,"omim_id__c":null,"snomed_id__c":null,"umls_id__c":null,"GARD_Disease__c":[{"Curated_Disease_Description__c":"Combined oxidative phosphorylation defect type 20 is a rare mitochondrial oxidative phosphorylation disorder characterized by variable combination of psychomotor delay, hypotonia, muscle weakness, seizures, microcephaly, cardiomyopathy and mild dysmorphic facial features. Variable types of structural brain anomalies have also been reported. Biochemical studies typically show decreased activity of mitochondrial complexes (mainly complex I).","Curated_Disease_Description_Source__c":"ORPHA:420728","GARD_Synonym__c":"combined oxidative phosphorylation deficiency 20; combined oxidative phosphorylation deficiency caused by mutation in vars2; combined oxidative phosphorylation deficiency type 20; coxpd20; vars2 combined oxidative phosphorylation deficiency","Name":"Combined oxidative phosphorylation defect type 20","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"United Mitochondrial Disease Foundation","Website__c":"https://www.umdf.org"},{"Account_Name__c":"CureARS","Website__c":"https://www.curears.org/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Genetics","Tag_Category__c":"Cause;Disease Category;Specialist","category_description":"Genetic diseases affect the DNA, or genetic instructions, which directs how tissues, organs, and body systems function.","curated_tag_name":"Genetic diseases"},{"Tag_Name__c":"Neurology","Tag_Category__c":"Disease Category;Specialist","category_description":"Neurological diseases affect the brain, spinal cord, cranial nerves, autonomic nerves, or other peripheral nerves.","curated_tag_name":"Neurological diseases"},{"Tag_Name__c":"Inborn Errors of Metabolism","Tag_Category__c":"Cause;Disease Category","category_description":"Inherited metabolic diseases, or inborn errors of metabolism, are a group of genetic diseases that affect the ability of the body's cells to convert food into energy.","curated_tag_name":"Inherited metabolic diseases"},{"Tag_Name__c":"Mitochondrial","Tag_Category__c":"Account;Cause;Disease Category","category_description":"Mitochondrial diseases are a group of genetic diseases that affect the ability of the body's cells to make energy.","curated_tag_name":"Mitochondrial diseases"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:420728"}],"External_Identifier_Disease__c":[{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4014660","Source__c":"C4014660","Xref__c":"C4014660"},{"URL__c":"https://www.omim.org/entry/615917","Source__c":"C4014660; MONDO:0014397; ORPHA:420728","Xref__c":"OMIM:615917"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=863097","Source__c":"C4014660","Xref__c":"MEDGEN:863097"},{"URL__c":"https://www.orpha.net/en/disease/detail/420728","Source__c":"C4014660; MONDO:0014397; ORPHA:420728","Xref__c":"ORPHA:420728"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0111478","Source__c":"MONDO:0014397","Xref__c":"DOID:0111478"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0014397","Source__c":"GARD:0017699","Xref__c":"MONDO:0014397"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"VARS2","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001263","HPO_Synonym__c":"Delayed cognitive development; Delayed development; Delayed developmental milestones; Delayed intellectual development; Delayed milestones; Delayed psychomotor development; Developmental delay; Developmental delay in early childhood; Developmental delay, global; Developmental retardation; GDD; Lack of psychomotor development; Motor and developmental delay; Motormental retardation; Psychomotor delay; Psychomotor development deficiency; Psychomotor development failure; Psychomotor developmental delay; Retarded development; Retarded mental development; Retarded psychomotor development","HPO_Name__c":"Global developmental delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Initial bilateral ptosis followed by limitation of eye movements in all directions and slowing of saccades.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000590","HPO_Synonym__c":"External ophthalmoplegia, progressive","HPO_Name__c":"Progressive external ophthalmoplegia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A reduction in the activity of the mitochondrial respiratory chain complex IV, which is part of the electron transport chain in mitochondria.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008347","HPO_Name__c":"Decreased activity of mitochondrial complex IV","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Smaller than normal size according to sex and gestational age related norms, defined as a weight below the 10th percentile for the gestational age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001518","HPO_Synonym__c":"Birth weight less than 10th percentile; Low birth weight; Small for gestational age","HPO_Name__c":"Small for gestational age","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","Feature__r":{"HPO_Description__c":"Head circumference below 2 standard deviations below the mean for age and sex.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000252","HPO_Synonym__c":"Abnormally small cranium; Abnormally small skull; Decreased circumference of cranium; Decreased size of cranium; Decreased size of skull; Reduced head circumference; small cranium; Small head circumference","HPO_Name__c":"Microcephaly","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An increased concentration of alanine in the blood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003348","HPO_Synonym__c":"Increased blood alanine; Increased serum alanine","HPO_Name__c":"Hyperalaninemia","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hypertrophic cardiomyopathy (HCM) is defined by the presence of increased ventricular wall thickness or mass in the absence of loading conditions (hypertension, valve disease) sufficient to cause the observed abnormality.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001639","HPO_Synonym__c":"Cardiomyopathy, hypertrophic; Enlarged and thickened heart muscle; HCM","HPO_Name__c":"Hypertrophic cardiomyopathy","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The burst suppression pattern in electroencephalography refers to a characteristic periodic pattern of low voltage (<10 microvolts) suppressed background and a relatively shorter pattern of higher amplitude slow, sharp, and spiking complexes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010851","HPO_Name__c":"EEG with burst suppression","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The upper eyelid margin is positioned 3 mm or more lower than usual and covers the superior portion of the iris (objective); or, the upper lid margin obscures at least part of the pupil (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000508","HPO_Synonym__c":"Blepharoptosis; Drooping upper eyelid; Eyelid ptosis; Palpebral ptosis","HPO_Name__c":"Ptosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A reduction in the activity of the mitochondrial respiratory chain complex I, which is part of the electron transport chain in mitochondria.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011923","HPO_Name__c":"Decreased activity of mitochondrial complex I","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Left ventricular noncompaction (LVNC) is defined by 3 markers: prominent left ventricular (LV) trabeculae, deep intertrabecular recesses, and the thin compacted layer.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030682","HPO_Name__c":"Left ventricular noncompaction","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduced strength of muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001324","HPO_Synonym__c":"Muscle weakness; Muscular weakness","HPO_Name__c":"Muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A focal-onset seizure is a type of seizure originating within networks limited to one hemisphere. They may be discretely localized or more widely distributed, and may originate in subcortical structures.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007359","HPO_Synonym__c":"Focal onset seizure; Focal seizure; Focal seizures; Focal-onset seizures; Partial seizure; Partial seizures; Seizure affecting one half of brain","HPO_Name__c":"Focal-onset seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001252","HPO_Synonym__c":"Low muscle tone; Low or weak muscle tone; Muscle hypotonia; Muscular hypotonia","HPO_Name__c":"Hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Ataxia refers to impaired coordination of voluntary muscle movement. Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001251","HPO_Synonym__c":"Cerebellar ataxia","HPO_Name__c":"Ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An increase in the level of lactate in the brain identified by magnetic resonance spectroscopy (MRS).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012707","HPO_Name__c":"Elevated brain lactate level by MRS","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Imaging_MRI"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormal buildup of lactic acid in the body, leading to acidification of the blood and other bodily fluids.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003128","HPO_Synonym__c":"Hyperlacticacidemia; Increased lactate in body; Lactic acidemia; Lacticacidemia; Lacticacidosis","HPO_Name__c":"Lactic acidosis","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Underdevelopment of the corpus callosum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002079","HPO_Synonym__c":"Corpus callosum hypoplasia; Hypoplasia of corpus callosum; Hypoplastic corpus callosum; Underdevelopment of part of brain called corpus callosum","HPO_Name__c":"Hypoplasia of the corpus callosum","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Cerebellar hypoplasia is a descriptive term implying a cerebellum with a reduced volume, but a normal shape and is stable over time.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001321","HPO_Synonym__c":"Congenital cerebellar hypoplasia; Hypoplasia of cerebellum; Hypoplastic cerebellum; Small cerebellum; Underdeveloped cerebellum","HPO_Name__c":"Cerebellar hypoplasia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A condition in which there is increased muscle tone so that arms or legs, for example, are stiff and difficult to move.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001276","HPO_Synonym__c":"Hypertonicity; Increased muscle tone","HPO_Name__c":"Hypertonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615917","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002093","HPO_Synonym__c":"Respiratory impairment","HPO_Name__c":"Respiratory insufficiency","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics","Inborn Errors of Metabolism","Mitochondrial"],"Disease Category":["Genetics","Neurology","Inborn Errors of Metabolism","Mitochondrial"],"Specialist":["Genetics","Neurology","Pediatrics"],"Account":["Mitochondrial"]},"synonyms":["combined oxidative phosphorylation deficiency 20"," combined oxidative phosphorylation deficiency caused by mutation in vars2"," combined oxidative phosphorylation deficiency type 20"," coxpd20"," vars2 combined oxidative phosphorylation deficiency"]}