{"Name":"Hereditary methemoglobinemia","DiseaseID__c":"GARD:0002659","id":2659,"encodedName":"hereditary-methemoglobinemia","IsDeleted":false,"Disease_Name_Full__c":"Hereditary methemoglobinemia","Xref_IDs__c":"267550008; C0272087; C580280; C98898; D74.0; MEDGEN:473013; MONDO:0018963; ORPHA:621","USA_Estimate__c":null,"No_of_Specialist_Tagsa__c":5,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":0,"World_Estimate__c":null,"No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":2,"Disease_Characteristics_Score__c":6,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MONDO:0018963","Disease_Description__c":"Methemoglobinemia inherited in an autosomal recessive pattern. It is caused by deficiency of the enzyme NADH methemoglobin reductase or the presence of abnormal hemoglobin M. It presents with cyanosis early in life. There is no evidence of cardiopulmonary disease present.","GARD_Name__c":"Hereditary methemoglobinemia","GARD_Synonym__c":"autosomal recessive methemoglobinemia; congenital methemoglobinemia","Curated_Disease_Description_Source__c":"MONDO:0018963","Curated_Disease_Description__c":"Methemoglobinemia inherited in an autosomal recessive pattern. It is caused by deficiency of the enzyme NADH methemoglobin reductase or the presence of abnormal hemoglobin M. It presents with cyanosis early in life. There is no evidence of cardiopulmonary disease present.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":"as a Newborn and as an Infant","SourceID__c":"ORPHA:621","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0018963","ORPHANET_ID__c":"ORPHA:621","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Metahemoglobinemia hereditaria","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"metahemoglobinemia hereditaria","Spanish_GARD_Synonym__c":"metahemoglobinemia autosómica recesiva; metahemoglobinemia congénita","Category_Linearization__c":"ORPHA:97992","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":"Methemoglobinemia inherited in an autosomal recessive pattern. It is caused by deficiency of the enzyme NADH methemoglobin reductase or the presence of abnormal hemoglobin M. It presents with cyanosis early in life. There is no evidence of cardiopulmonary disease present.","Curated_Disease_Description_Source__c":"MONDO:0018963","GARD_Synonym__c":"autosomal recessive methemoglobinemia; congenital methemoglobinemia","Name":"Hereditary methemoglobinemia","estimateUsa":""}],"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":"Hematology","Tag_Category__c":"Disease Category;Specialist","category_description":"Blood diseases affect the blood or blood-forming organs, including red blood cells, white blood cells, platelets, plasma, and bone marrow.","curated_tag_name":"Blood diseases"},{"Tag_Name__c":"Neurodevelopmental disabilities","Tag_Category__c":"Specialist","curated_tag_name":"Neurodevelopmental disabilities"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:621"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:621"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0002659","Source__c":"RareSource"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C98898","Source__c":"C0272087; MONDO:0018963","Xref__c":"C98898"},{"URL__c":"https://www.orpha.net/en/disease/detail/621","Source__c":"C0272087; MONDO:0018963; ORPHA:621","Xref__c":"ORPHA:621"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=473013","Source__c":"C0272087","Xref__c":"MEDGEN:473013"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C580280","Source__c":"MONDO:0018963","Xref__c":"C580280"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0272087","Source__c":"C0272087","Xref__c":"C0272087"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=267550008","Source__c":"C0272087; MONDO:0018963","Xref__c":"267550008"},{"URL__c":"http://purl.bioontology.org/ontology/ICD10CM/D74.0","Source__c":"MONDO:0018963","Xref__c":"D74.0"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0018963","Source__c":"GARD:0002659","Xref__c":"MONDO:0018963"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"CYB5R3","GHR_URL__c":"https://medlineplus.gov/genetics/gene/cyb5r3","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A form of strabismus with one or both eyes turned inward ('crossed') to a relatively severe degree, usually defined as 10 diopters or more.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000565","HPO_Synonym__c":"Inward turning cross eyed","HPO_Name__c":"Esotropia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Spastic paralysis affecting all four limbs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002510","HPO_Synonym__c":"Spastic quadriplegia","HPO_Name__c":"Spastic tetraplegia","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Uncommon (<1-4%)","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":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Severe intellectual disability (ID) is defined as a type of ID characterized by severely sub-average adaptive functioning and intellectual functioning, with an intelligence quotient (IQ) the range of 20-34.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010864","HPO_Synonym__c":"Early and severe mental retardation; Intellectual disability, severe; Mental retardation, severe; Severe mental retardation","HPO_Name__c":"Severe intellectual disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Atrophy of the temporal cortex.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007112","HPO_Name__c":"Temporal cortical atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Unlocalized atrophy of the brain with decreased total brain matter volume and increased ventricular size.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002283","HPO_Synonym__c":"Diffuse brain atrophy; Generalized brain atrophy; Generalized brain degeneration; Generalized cerebral atrophy","HPO_Name__c":"Global brain atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A severe delay in the achievement of motor or mental milestones in the domains of development of a child.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011344","HPO_Synonym__c":"Global developmental delay, severe","HPO_Name__c":"Severe global developmental delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001257","HPO_Synonym__c":"Involuntary muscle stiffness, contraction, or spasm; Muscle spasticity; Muscular spasticity","HPO_Name__c":"Spasticity","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of the nervous system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000707","HPO_Synonym__c":"Abnormality of the nervous system; Neurologic abnormalities; Neurological abnormality","HPO_Name__c":"Abnormality of the nervous system","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","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":"ORPHA:621","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormal structure or appearance of the nail.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001597","HPO_Synonym__c":"Abnormality of the nail","HPO_Name__c":"Abnormal nail morphology","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Lightening or darkening of the lips from their usual coloring.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025118","HPO_Name__c":"Lip discoloration","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","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":"ORPHA:621","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Perceived difficulty to breathe that occurs with exercise or exertion and improves with rest.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002875","HPO_Synonym__c":"Exertional breathlessness; Shortness of breathing upon physical activity","HPO_Name__c":"Exertional dyspnea","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"Decreased size of the basal ganglia.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012697","HPO_Name__c":"Small basal ganglia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"Delayed myelination.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012448","HPO_Name__c":"Delayed myelination","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Atrophy of the frontal cortex.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006913","HPO_Synonym__c":"Frontal cortex degeneration","HPO_Name__c":"Frontal cortical atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Bluish discoloration of the skin and mucosa due to poor circulation or inadequate oxygenation of arterial or capillary blood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000961","HPO_Synonym__c":"Blue discoloration of the skin","HPO_Name__c":"Cyanosis","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A slow, continuous, involuntary writhing movement that prevents maintenance of a stable posture. Athetosis involves continuous smooth movements that appear random and are not composed of recognizable sub-movements or movement fragments. In contrast to chorea, in athetosis, the same regions of the body are repeatedly involved. Athetosis may worsen with attempts at movement of posture, but athetosis can also occur at rest.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002305","HPO_Synonym__c":"Athetoid movements; Involuntary writhing movements; Involuntary writhing movements in fingers, hands, toes, and feet","HPO_Name__c":"Athetosis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormally increased levels of methemoglobin in the blood. In this form of hemoglobin, there is an oxidized ferric iron (Fe +3) rather than the reduced ferrous form (Fe 2+) that is normally found in hemoglobin. Methemoglobin has a reduced affinity for oxygen, resulting in a reduced ability to release oxygen to tissues.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012119","HPO_Name__c":"Methemoglobinemia","Feature_System__c":"Blood and Blood-Forming Tissue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001250","HPO_Synonym__c":"Epileptic seizure; Seizures","HPO_Name__c":"Seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormal bluish coloration of the sclera.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000592","HPO_Synonym__c":"Blue sclera; Bluish sclerae; Gray sclerae; Whites of eyes are a bluish-gray color","HPO_Name__c":"Blue sclerae","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Cerebellar atrophy is defined as a cerebellum with initially normal structures, in a posterior fossa with normal size, which displays enlarged fissures (interfolial spaces) in comparison to the foliae secondary to loss of tissue. Cerebellar atrophy implies irreversible loss of tissue and result from an ongoing progressive disease until a final stage is reached or a single injury, e.g. an intoxication or infectious event.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001272","HPO_Synonym__c":"Atrophic cerebellum; Degeneration of cerebellum","HPO_Name__c":"Cerebellar atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of dystonia (abnormally increased muscular tone causing fixed abnormal postures) that affects muscles of the limbs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002451","HPO_Name__c":"Limb dystonia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:621","HPO_Frequency__c":"Uncommon (<1-4%)","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":"ORPHA:621","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced amount of myelin in the nervous system resulting from defective myelinogenesis in the white matter of the central nervous system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006808","HPO_Synonym__c":"Hypomyelination of the brain","HPO_Name__c":"Cerebral hypomyelination","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology","Hematology"],"Specialist":["Genetics","Neurology","Hematology","Neurodevelopmental disabilities","Pediatrics"]},"synonyms":["autosomal recessive methemoglobinemia"," congenital methemoglobinemia"]}