{"Name":"Mitochondrial neurogastrointestinal encephalomyopathy","DiseaseID__c":"GARD:0009920","id":9920,"encodedName":"mitochondrial-neurogastrointestinal-encephalomyopathy","IsDeleted":false,"Disease_Name_Full__c":"Mitochondrial neurogastrointestinal encephalomyopathy","Xref_IDs__c":"718214007; C0872218; C119678; C537477; MEDGEN:167876; MONDO:0017575; ORPHA:298","USA_Estimate__c":"5,000","No_of_Specialist_Tagsa__c":9,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":2,"World_Estimate__c":"8,000 to 80,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":2,"No_of_Disease_Descriptions__c":4,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":3,"Description_Source__c":"MONDO:0017575","Disease_Description__c":"Mitochondrial NeuroGastroIntestinal Encephalomyopathy (MNGIE) syndrome is characterized by the association of gastrointestinal dysmotility, peripheral neuropathy, chronic progressive external ophthalmoplegia and leukoencephalopathy.","GARD_Name__c":"Mitochondrial neurogastrointestinal encephalomyopathy","GARD_Synonym__c":"mitochondrial neurogastrointestinal encephalomyopathy syndrome; mitochondrial neurogastrointestinal encephalopathy; mitochondrial neurogastrointestinal encephalopathy syndrome; mitochondrial neurogastrointestingal encephalopathy; mngie; mngie syndrome; thymidine phosphorylase deficiency","Curated_Disease_Description_Source__c":"GARD:0009920","Curated_Disease_Description__c":"Mitochondrial neurogastrointestinal encephalopathy (MNGIE) syndrome is a condition that mainly affects the digestive system and nervous system. Almost all people with MNGIE have gastrointestinal dysmotility, in which the muscles and nerves of the digestive system do not move food through the digestive tract efficiently and result in early satiety, nausea, dysphagia, gastroesophageal reflux, vomiting after eating (postprandial emesis), episodic abdominal pain and/or distention, and diarrhea . Affected people may also have cachexia, dropped eyelids or weakness of other muscles of the eyes, peripheral neuropathy (manifesting as tingling, numbness, and pain (paresthesias) symmetric weakness, that mainly affect the lower extremities) and hearing loss. Leukoencephalopathy, which is the deterioration of a type of brain tissue known as white matter, is a hallmark of MNGIE; however it does not usually cause symptoms in people with this disorder. MNGIE is caused by variations in the TYMP gene, important for allowing adequate levels of thymidine in the mitochondria. Inheritance is autosomal recessive. Diagnosis is confirmed by detecting the TYMP gene variations or the increased levels of thymidine and deoxyuridine in blood.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"5,000","Age_at_Onset_Snippet_Text__c":"from Childhood to Adulthood","SourceID__c":"ORPHA:298","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0017575","ORPHANET_ID__c":"ORPHA:298","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Encefalomiopatía neurogastrointestinal mitocondrial","Spanish_Description_Source__c":"ORPHA:298","Spanish_Description__c":"El síndrome de encefalopatía mioneurogastrointestinal (MNGIE, siglas en inglés) se caracteriza por la asociación de dismotilidad gastrointestinal, neuropatía periférica, oftalmoplejía externa progresiva crónica y leucoencefalopatía.","Spanish_Disease_Name__c":"encefalomiopatía neurogastrointestinal mitocondrial","Spanish_GARD_Synonym__c":"mngie","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":"Mitochondrial neurogastrointestinal encephalopathy (MNGIE) syndrome is a condition that mainly affects the digestive system and nervous system. Almost all people with MNGIE have gastrointestinal dysmotility, in which the muscles and nerves of the digestive system do not move food through the digestive tract efficiently and result in early satiety, nausea, dysphagia, gastroesophageal reflux, vomiting after eating (postprandial emesis), episodic abdominal pain and/or distention, and diarrhea . Affected people may also have cachexia, dropped eyelids or weakness of other muscles of the eyes, peripheral neuropathy (manifesting as tingling, numbness, and pain (paresthesias) symmetric weakness, that mainly affect the lower extremities) and hearing loss. Leukoencephalopathy, which is the deterioration of a type of brain tissue known as white matter, is a hallmark of MNGIE; however it does not usually cause symptoms in people with this disorder. MNGIE is caused by variations in the TYMP gene, important for allowing adequate levels of thymidine in the mitochondria. Inheritance is autosomal recessive. Diagnosis is confirmed by detecting the TYMP gene variations or the increased levels of thymidine and deoxyuridine in blood.","Curated_Disease_Description_Source__c":"GARD:0009920","GARD_Synonym__c":"mitochondrial neurogastrointestinal encephalomyopathy syndrome; mitochondrial neurogastrointestinal encephalopathy; mitochondrial neurogastrointestinal encephalopathy syndrome; mitochondrial neurogastrointestingal encephalopathy; mngie; mngie syndrome; thymidine phosphorylase deficiency","Name":"Mitochondrial neurogastrointestinal encephalomyopathy","Curated_USA_Estimate__c":"5,000","estimateUsa":"5,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Metabolic Support UK","Website__c":"https://www.metabolicsupportuk.org"},{"Account_Name__c":"Childhood Dementia Initiative","Website__c":"https://www.childhooddementia.org/"},{"Account_Name__c":"Alianza Iberoamericana de Enfermedades Raras o Poco Frecuentes","Website__c":"https://aliber.org/web/"},{"Account_Name__c":"Federación Mexicana de Enfermedades Raras (FEMEXER)","Website__c":"http://www.femexer.org/"},{"Account_Name__c":"Federación Española de Enfermedades Raras","Website__c":"https://enfermedades-raras.org/"},{"Account_Name__c":"Federación Colombiana de Enfermedades Raras","Website__c":"http://www.fecoer.org"},{"Account_Name__c":"Federación Argentina de Enfermedades Poco Frecuentes","Website__c":"https://fadepof.org.ar/"},{"Account_Name__c":"Asociación Todos Unidos Enfermedades Raras Uruguay","Website__c":"https://atueru.org.uy/"},{"Account_Name__c":"Federación Española de Enfermedades Metabólicas Hereditarias","Website__c":"https://metabolicos.es/"},{"Account_Name__c":"AGA GI Patient Center","Website__c":"https://patient.gastro.org/"},{"Account_Name__c":"United Mitochondrial Disease Foundation","Website__c":"https://www.umdf.org"},{"Account_Name__c":"International Foundation for Functional Gastrointestinal Disorders","Website__c":"https://iffgd.org/"},{"Account_Name__c":"Association of Gastrointestinal Motility Disorders","Website__c":"https://www.agmdhope.org/"},{"Account_Name__c":"United Leukodystrophy Foundation","Website__c":"https://ulf.org/"},{"Account_Name__c":"MitoAction","Website__c":"https://www.mitoaction.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":"Ophthalmology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Gastroenterology","Tag_Category__c":"Disease Category;Specialist","category_description":"Gastrointestinal diseases, or digestive diseases, affect the esophagus, stomach, small intestine, large intestine, liver, gallbladder, or pancreas.","curated_tag_name":"Gastrointestinal 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":"Congenital Abnormality","Tag_Category__c":"Disease Category","category_description":"Birth defects are structural changes present at birth that can affect almost any part of the body, including how the body looks, works, or both.","curated_tag_name":"Birth defects"},{"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":"Peripheral Neuropathy","Tag_Category__c":"Account","curated_tag_name":"Peripheral neuropathy"},{"Tag_Name__c":"Epilepsy","Tag_Category__c":"Account;Specialist","curated_tag_name":"Epilepsy"},{"Tag_Name__c":"Neuro-Ophthalmology","Tag_Category__c":"Specialist","curated_tag_name":"Neuro-ophthalmic diseases"},{"Tag_Name__c":"Neurodevelopmental disabilities","Tag_Category__c":"Specialist","curated_tag_name":"Neurodevelopmental disabilities"},{"Tag_Name__c":"Neuromuscular medicine","Tag_Category__c":"Specialist","curated_tag_name":"Neuromuscular medicine"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Adolescent","Provided_By__c":"ORPHA:298"},{"Age_At_Onset__c":"Childhood","Provided_By__c":"ORPHA:298"},{"Age_At_Onset__c":"Adult","Provided_By__c":"ORPHA:298"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0009920","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK26471","Source__c":"Gene Review","Xref__c":"NBK26471"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=167876","Source__c":"C0872218","Xref__c":"MEDGEN:167876"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C119678","Source__c":"C0872218; MONDO:0017575","Xref__c":"C119678"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C537477","Source__c":"MONDO:0017575","Xref__c":"C537477"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0872218","Source__c":"C0872218","Xref__c":"C0872218"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=718214007","Source__c":"C0872218; MONDO:0017575","Xref__c":"718214007"},{"URL__c":"https://www.orpha.net/en/disease/detail/298","Source__c":"C0872218; MONDO:0017575; ORPHA:298","Xref__c":"ORPHA:298"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0017575","Source__c":"GARD:0009920","Xref__c":"MONDO:0017575"},{"URL__c":"https://medlineplus.gov/genetics/condition/mitochondrial-neurogastrointestinal-encephalopathy-disease"},{"URL__c":"https://medlineplus.gov/genetics/condition/mitochondrial-neurogastrointestinal-encephalopathy-disease","Source__c":"GARD:0009920","Xref__c":"https://medlineplus.gov/genetics/condition/mitochondrial-neurogastrointestinal-encephalopathy-disease"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"LIG3","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"POLG","GHR_URL__c":"https://medlineplus.gov/genetics/gene/polg","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"TYMP","GHR_URL__c":"https://medlineplus.gov/genetics/gene/tymp","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"RRM2B","GHR_URL__c":"https://medlineplus.gov/genetics/gene/rrm2b","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Increased concentration of protein in the cerebrospinal fluid.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002922","HPO_Synonym__c":"Cerebrospinal fluid protein increased; Cerebrospinal fluid with increased protein; Elevated cerebrospinal fluid protein; Elevated csf protein; Hyperproteinorrhachia; Increased CSF protein; Increased protein in csf; Spinal fluid protein elevated","HPO_Name__c":"Increased CSF protein concentration","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A reduced desire to eat.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004396","HPO_Synonym__c":"Decreased appetite; Loss of appetite; Poor appetite","HPO_Name__c":"Poor appetite","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of an extraocular muscle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008049","HPO_Name__c":"Abnormality of the extraocular muscles","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A condition in which the stomach contents leak backwards from the stomach into the esophagus through the lower esophageal sphincter.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002020","HPO_Synonym__c":"Acid reflux; Acid reflux disease; Gastro-esophageal reflux; Gastroesophageal reflux disease; GERD; GORD; Heartburn","HPO_Name__c":"Gastroesophageal reflux","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of the cerebral white matter.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002500","HPO_Synonym__c":"Abnormality of subcortical white matter; Abnormality of the cerebral white matter; Cerebral white matter abnormalities; Leukoaraiosis; White matter abnormalities; White matter alterations","HPO_Name__c":"Abnormal cerebral white matter morphology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The term intellectual disability or intellectual developmental disorder is used to describe significantly sub-average intellectual and adaptive functioning based on clinical assessment and as measured by individually administered, appropriately normed, standardized and validated tests of intellectual functioning and adaptive behavior, with onset during the developmental period from infancy through adolescence.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001249","HPO_Synonym__c":"Intellectual disability; Mental deficiency; Mental retardation; Mental retardation, nonspecific; Mental-retardation; Nonprogressive intellectual disability; Nonprogressive mental retardation","HPO_Name__c":"Intellectual disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003199","HPO_Synonym__c":"Decreased muscle mass","HPO_Name__c":"Decreased muscle mass","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduced strength of the musculature of the distal extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002460","HPO_Synonym__c":"Distal limb muscle weakness; Distal limb weakness; Distal muscular weakness; Distal paresis; Muscle weakness, distal; Muscle weakness, distal limbs, due to neuronopathy; Weakness of distal muscles; Weakness of outermost muscles","HPO_Name__c":"Distal muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Distention of the abdomen.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003270","HPO_Synonym__c":"Abdominal bloating; Abdominal distension; Abdominal swelling; Belly bloating; Bloating; Distended abdomen","HPO_Name__c":"Abdominal distention","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of decreased nerve conduction velocity that affects the motor neuron.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003431","HPO_Synonym__c":"Decreased motor NCV; Decreased motor nerve conduction velocities; Reduced motor nerve conduction velocity","HPO_Name__c":"Decreased motor nerve conduction velocity","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_NCV"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An anomaly of the mitochondrion, the membranous cytoplasmic organelle the interior of which is subdivided by cristae. The mitochondrion is a self replicating organelle that is the site of tissue respiration.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012103","HPO_Name__c":"Abnormality of the mitochondrion","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduction of total body weight.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001824","HPO_Synonym__c":"Loss of weight","HPO_Name__c":"Weight loss","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormal intestinal contractions, such as spasms and intestinal paralysis, related to the loss of the ability of the gut to coordinate muscular activity because of endogenous or exogenous causes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002579","HPO_Synonym__c":"GI dysmotility","HPO_Name__c":"Gastrointestinal dysmotility","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Paralysis of the external ocular muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000544","HPO_Synonym__c":"Chronic progressive external ophthalmoplegia; CPEO; Ophthalmoplegia externa; Paralysis or weakness of muscles within or surrounding outer part of eye; Progressive paralysis or weakness of muscles of eye motility; Progressive paralysis or weakness of muscles of eye movement","HPO_Name__c":"External ophthalmoplegia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Severe weight loss, wasting of muscle, loss of appetite, and general debility related to a chronic disease.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004326","HPO_Synonym__c":"Wasting syndrome","HPO_Name__c":"Cachexia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of the gastrointestinal tract.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011024","HPO_Synonym__c":"Abnormality of the gastrointestinal tract; Abnormality of the GI tract","HPO_Name__c":"Abnormality of the gastrointestinal tract","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal appearance of muscle fibers observed on muscle biopsy. Ragged red fibers can be visualized with Gomori trichrome staining as irregular and intensely red subsarcolemmal zones, whereas the normal myofibrils are green. The margins of affect fibers appear red and ragged. The ragged-red is due to the accumulation of abnormal mitochondria below the plasma membrane of the muscle fiber, leading to the appearance of a red rim and speckled sarcoplasm.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003200","HPO_Synonym__c":"Mitochondrial proliferation in muscle tissue; Ragged red muscle fibers; Ragged-red fibers","HPO_Name__c":"Ragged-red muscle fibers","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An unpleasant sensation characterized by physical discomfort (such as pricking, throbbing, or aching) and perceived to originate in the abdomen.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002027","HPO_Synonym__c":"Abdominal pain; Pain in stomach; Stomach pain","HPO_Name__c":"Abdominal pain","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Demyelinating neuropathy is characterized by slow nerve conduction velocities with reduced amplitudes of sensory/motor nerve conduction and prolonged distal latencies.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007108","HPO_Name__c":"Demyelinating peripheral neuropathy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally increased frequency (usually defined as three or more) loose or watery bowel movements a day.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002014","HPO_Synonym__c":"Diarrhea; Watery stool","HPO_Name__c":"Diarrhea","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Forceful ejection of the contents of the stomach through the mouth by means of a series of involuntary spasmic contractions.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002013","HPO_Synonym__c":"Emesis; Throwing up; Vomiting","HPO_Name__c":"Vomiting","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Hypogonadotropic hypogonadism is characterized by reduced function of the gonads (testes in males or ovaries in females) and results from the absence of the gonadal stimulating pituitary hormones: follicle stimulating hormone (FSH) and luteinizing hormone (LH).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000044","HPO_Synonym__c":"Hypogonadotrophic hypogonadism; Low gonadotropins (secondary hypogonadism)","HPO_Name__c":"Hypogonadotropic hypogonadism","Feature_System__c":"Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Difficulty in swallowing.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002015","HPO_Synonym__c":"Difficulty swallowing; Poor swallowing; Swallowing difficulties; Swallowing difficulty","HPO_Name__c":"Dysphagia","Feature_System__c":"Nervous System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced function of the gonads (testes in males or ovaries in females) associated with excess pituitary gonadotropin secretion and resulting in delayed sexual development and growth delay.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000815","HPO_Synonym__c":"Hypergonadotrophic hypogonadism; Primary hypogonadism","HPO_Name__c":"Hypergonadotropic hypogonadism","Feature_System__c":"Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Partial or complete wasting (loss) of muscularois propria tissue that was once present. The atrophy may involve a marked vacuolar degeneration of myocytes, loss of muscle fibers and some cases a highly characteristic honeycomb fibrosis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025149","HPO_Name__c":"Atrophic muscularis propria","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Increased susceptibility to fatigue.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003388","HPO_Name__c":"Easy fatigability","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Weakness of the muscles responsible for dorsiflexion of the foot, that is, of the movement of the toes towards the shin. The foot dorsiflexors include the tibialis anterior, the extensor hallucis longus, the extensor digitorum longus, and the peroneus tertius muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0009027","HPO_Synonym__c":"Foot drop; Foot extensor weakness; Footdrop; Inability to heel walk; Inability to walk on heels","HPO_Name__c":"Foot dorsiflexor weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"A loss of global cognitive ability of sufficient amount to interfere with normal social or occupational function. Dementia represents a loss of previously present cognitive abilities, generally in adults, and can affect memory, thinking, language, judgment, and behavior.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000726","HPO_Synonym__c":"Dementia; Dementia, progressive; Progressive dementia","HPO_Name__c":"Dementia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A sensation of unease in the stomach together with an urge to vomit.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002018","HPO_Synonym__c":"Nausea","HPO_Name__c":"Nausea","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormal sensations such as tingling, pricking, or numbness of the skin with no apparent physical cause.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003401","HPO_Synonym__c":"Paresthesias; Pins and needles feeling; Tingling","HPO_Name__c":"Paresthesia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality characterized by disruption of the normal functioning of peripheral axons.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003477","HPO_Synonym__c":"Axonal neuropathy; Axonal peripheral neuropathy","HPO_Name__c":"Peripheral axonal neuropathy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormal small intestinal contractions, such as spasms and intestinal paralysis related to the loss of the ability of the gut to coordinate muscular activity because of endogenous or exogenous causes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012850","HPO_Name__c":"Small intestinal dysmotility","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of hearing impairment in one or both ears related to an abnormal functionality of the cochlear nerve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000407","HPO_Synonym__c":"Hearing loss, sensorineural; Sensorineural deafness; Sensorineural hearing loss","HPO_Name__c":"Sensorineural hearing impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A chronic disorder of the liver in which liver tissue becomes scarred and is partially replaced by regenerative nodules and fibrotic tissue resulting in loss of liver function.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001394","HPO_Synonym__c":"Hepatic cirrhosis; Scar tissue replaces healthy tissue in the liver","HPO_Name__c":"Cirrhosis","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduced speed of conduction of the action potential along a sensory nerve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003448","HPO_Synonym__c":"Decreased sensory NCV; Decreased sensory nerve conduction velocities","HPO_Name__c":"Decreased sensory nerve conduction velocity","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_NCV"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Any anomaly of cell structure.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025461","HPO_Name__c":"Abnormal cell morphology","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Peripheral neuropathy is a general term for any disorder of the peripheral nervous system. The main clinical features used to classify peripheral neuropathy are distribution, type (mainly demyelinating versus mainly axonal), duration, and course.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0009830","HPO_Synonym__c":"Peripheral nerve damage; Peripheral neuritis","HPO_Name__c":"Peripheral neuropathy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"This term describes abnormality of the white matter of the cerebrum resulting from damage to the myelin sheaths of nerve cells.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002352","HPO_Name__c":"Leukoencephalopathy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A reduced number of large myelinated nerve fibers.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003387","HPO_Synonym__c":"Depletion of large myelinated fibers; Loss of large myelinated fibers; Loss of larger myelinated nerve fibers","HPO_Name__c":"Decreased number of large peripheral myelinated nerve fibers","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Elevations of the levels of SGOT and SGPT in the serum. SGOT (serum glutamic oxaloacetic transaminase) and SGPT (serum glutamic pyruvic transaminase) are transaminases primarily found in the liver and heart and are released into the bloodstream as the result of liver or heart damage. SGOT and SGPT are used clinically mainly as markers of liver damage.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002910","HPO_Synonym__c":"Abnormal liver enzymes; Abnormal liver function; Abnormal liver function tests; Elevated circulating hepatic transaminase activity; Elevated liver enzymes; Elevated serum transaminases; Elevated transaminases; High liver enzymes; Increased liver enzymes; Increased liver function tests; Increased transaminases; Raised liver enzymes; Subclinical abnormal liver function tests","HPO_Name__c":"Elevated circulating hepatic transaminase concentration","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A form of hepatic steatosis characterized by the presence of large, lipid-laden vesicles in the affected hepatocytes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001403","HPO_Synonym__c":"Macrovesicular steatosis","HPO_Name__c":"Macrovesicular hepatic steatosis","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality affecting one or both hands.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001155","HPO_Synonym__c":"Abnormal hands; Abnormality of the hand; Hand anomalies; Hand deformities","HPO_Name__c":"Abnormality of the hand","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007141","HPO_Synonym__c":"Mixed polyneuropathy; Nerve damage causing decreased feeling and movement; Sensorimotor peripheral neuropathy","HPO_Name__c":"Sensorimotor neuropathy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction in erythrocytes volume or hemoglobin concentration.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001903","HPO_Synonym__c":"Anaemia; Low number of red blood cells or hemoglobin","HPO_Name__c":"Anemia","Feature_System__c":"Blood and Blood-Forming Tissue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:298","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Ophthalmoplegia is a paralysis or weakness of one or more of the muscles that control eye movement.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000597","HPO_Synonym__c":"Extraocular muscle palsy; Extraocular muscle paralysis; Weakness of extraocular eye movement; Weakness of muscles controlling eye movement","HPO_Name__c":"Ophthalmoparesis","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics","Inborn Errors of Metabolism","Mitochondrial"],"Disease Category":["Genetics","Neurology","Gastroenterology","Inborn Errors of Metabolism","Congenital Abnormality","Mitochondrial"],"Specialist":["Genetics","Neurology","Ophthalmology","Gastroenterology","Epilepsy","Neuro-Ophthalmology","Neurodevelopmental disabilities","Neuromuscular medicine","Pediatrics"],"Account":["Mitochondrial","Peripheral Neuropathy","Epilepsy"]},"synonyms":["mitochondrial neurogastrointestinal encephalomyopathy syndrome"," mitochondrial neurogastrointestinal encephalopathy"," mitochondrial neurogastrointestinal encephalopathy syndrome"," mitochondrial neurogastrointestingal encephalopathy"," mngie"," mngie syndrome"," thymidine phosphorylase deficiency"],"spanishId":13530,"spanishName":"encefalomiopatia-neurogastrointestinal-mitocondrial"}