{"Name":"Giant axonal neuropathy 1","DiseaseID__c":"GARD:0006500","id":6500,"encodedName":"giant-axonal-neuropathy-1","IsDeleted":false,"Disease_Name_Full__c":"Giant axonal neuropathy 1","Xref_IDs__c":"C1850386; DOID:0090068; MEDGEN:376775; MONDO:0009749; OMIM:256850; ORPHA:643","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":3,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MONDO:0009749","Disease_Description__c":"Giant axonal neuropathy (GAN) is a severe, slowly progressive neurodegenerative disorder characterized by progressive motor and sensory peripheral neuropathy, central nervous system involvement (including pyramidal and cerebellar signs), and characteristic kinky hair in most cases.","GARD_Name__c":"Giant axonal neuropathy 1","GARD_Synonym__c":"gan; gan giant axonal neuropathy; gan1; giant axonal neuropathy 1, autosomal recessive; giant axonal neuropathy caused by mutation in gan; giant axonal neuropathy type 1; giant axonal neuropathy-1","Curated_Disease_Description_Source__c":"GARD:0006500","Curated_Disease_Description__c":"Giant axonal neuropathy (GAN) is a neurodegenerative disorder characterized by abnormally large and dysfunctional axons (the specialized extensions of nerve cells that are required for the transmission of nerve impulses). The condition typically appears in infancy or early childhood with severe peripheral motor and sensory neuropathy (affecting movement and sensation in the arms and legs). Early signs include difficulty walking, lack of coordination, and loss of strength. Over time, the central nervous system (brain and spinal cord) becomes involved, causing a gradual decline in mental function, loss of control of body movements, and seizures. Giant axonal neuropathy is caused by genetic changes in the GAN gene. It follows and autosomal dominant pattern of inheritance.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":"as an Infant and as a Child","SourceID__c":"ORPHA:643","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0009749","ORPHANET_ID__c":"ORPHA:643","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Neuropatía axonal gigante","Spanish_Description_Source__c":"ORPHA:643","Spanish_Description__c":"La neuropatía axonal gigante (GAN, siglas en inglés) es un trastorno neurodegenerativo grave, lentamente progresivo, caracterizado por neuropatía periférica sensoriomotora progresiva, afectación del sistema nervioso central (incluyendo signos piramidales y cerebelosos) y cabello rizado característico, en la mayoría de los casos.","Spanish_Disease_Name__c":"neuropatía axonal gigante","Spanish_GARD_Synonym__c":null,"Category_Linearization__c":"ORPHA:98006","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":"Giant axonal neuropathy (GAN) is a neurodegenerative disorder characterized by abnormally large and dysfunctional axons (the specialized extensions of nerve cells that are required for the transmission of nerve impulses). The condition typically appears in infancy or early childhood with severe peripheral motor and sensory neuropathy (affecting movement and sensation in the arms and legs). Early signs include difficulty walking, lack of coordination, and loss of strength. Over time, the central nervous system (brain and spinal cord) becomes involved, causing a gradual decline in mental function, loss of control of body movements, and seizures. Giant axonal neuropathy is caused by genetic changes in the GAN gene. It follows and autosomal dominant pattern of inheritance.","Curated_Disease_Description_Source__c":"GARD:0006500","GARD_Synonym__c":"gan; gan giant axonal neuropathy; gan1; giant axonal neuropathy 1, autosomal recessive; giant axonal neuropathy caused by mutation in gan; giant axonal neuropathy type 1; giant axonal neuropathy-1","Name":"Giant axonal neuropathy 1","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Muscular Dystrophy Association","Website__c":"https://www.mda.org"},{"Account_Name__c":"Muscular Dystrophy Canada","Website__c":"https://muscle.ca/"},{"Account_Name__c":"Hannah's Hope Fund","Website__c":"https://hannahshopefund.org/"},{"Account_Name__c":"Alex The Leukodystrophy Charity","Website__c":"https://www.alextlc.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":"Peripheral Neuropathy","Tag_Category__c":"Account","curated_tag_name":"Peripheral neuropathy"},{"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":"Childhood","Provided_By__c":"ORPHA:643"},{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:643"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C1850386"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0006500","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1136","Source__c":"Gene Review","Xref__c":"NBK1136"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0090068","Source__c":"MONDO:0009749","Xref__c":"DOID:0090068"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C1850386","Source__c":"C1850386","Xref__c":"C1850386"},{"URL__c":"https://www.orpha.net/en/disease/detail/643","Source__c":"C1850386; MONDO:0009749","Xref__c":"ORPHA:643"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=376775","Source__c":"C1850386","Xref__c":"MEDGEN:376775"},{"URL__c":"https://www.omim.org/entry/256850","Source__c":"C1850386; MONDO:0009749; ORPHA:643","Xref__c":"OMIM:256850"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0009749","Source__c":"GARD:0006500","Xref__c":"MONDO:0009749"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"GAN","GHR_URL__c":"https://medlineplus.gov/genetics/gene/gan","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The term wooly hair refers to an abnormal variant of hair that is fine, with tightly coiled curls, and often hypopigmented. Optical microscopy may reveal the presence of tight spirals and a clear diameter reduction as compared with normal hair. Electron microscopy may show flat, oval hair shafts with reduced transversal diameter.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002224","HPO_Synonym__c":"Kinked hair; Wooly hair","HPO_Name__c":"Woolly hair","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","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:643","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An anomaly of the pituitary gland.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012503","HPO_Synonym__c":"Abnormality of the pituitary gland; disorder of pituitary gland","HPO_Name__c":"Abnormal pituitary gland morphology","Feature_System__c":"Nervous System; Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Any structural abnormality of the cerebellum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001317","HPO_Synonym__c":"Abnormality of the cerebellum; Cerebellar abnormalities; Cerebellar abnormality; Cerebellar anomaly; Cerebellar signs","HPO_Name__c":"Abnormal cerebellum morphology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003405","HPO_Name__c":"Diffuse axonal swelling","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The legs angle inward, such that the knees are close together and the ankles far apart.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002857","HPO_Synonym__c":"Genu valga; Genu valgus; Genua valga; Knee joint valgus deformity; Knock knees","HPO_Name__c":"Genu valgum","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An increase in height of the medial longitudinal arch of the foot that does not flatten on weight bearing (i.e., a distinctly hollow form of the sole of the foot when it is bearing weight).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001761","HPO_Synonym__c":"Cavus foot; High-arched foot","HPO_Name__c":"Pes cavus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The term gait disturbance can refer to any disruption of the ability to walk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001288","HPO_Synonym__c":"Abnormal gait; Abnormal walk; Difficulty in walking; Gait abnormalities; Gait difficulties; Gait disturbances; Impaired gait; Walking disability","HPO_Name__c":"Gait disturbance","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","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:643","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The capability that a joint (or a group of joints) has to move, passively and/or actively, beyond normal limits along physiological axes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001382","HPO_Synonym__c":"Double-Jointed; Extensible joints; Flexible joints; Hyperextensible joints; Increased joint mobility; Increased mobility of joints; Joint hyperextensibility; Joint hyperflexibility; Joint hyperlaxity; Joint laxity; Joints move beyond expected range of motion; Lax joints; Loose-jointedness","HPO_Name__c":"Joint hypermobility","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A characteristic triangular, kidney- or heat-shaped diameter of hair shafts with typical longitudinal canalicular deformation as observable by scanning electron microscopy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002235","HPO_Name__c":"Pili canaliculi","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal reduction in sensation in the distal portions of the extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002936","HPO_Synonym__c":"Decreased distal sensation; Decreased sensation in extremities; Distal sensation loss; Distal sensory impairment in lower limbs; Distal sensory impairment of the lower extremities; Distal sensory loss; Distal sensory loss, upper and lower limbs; Loss of distal sensation","HPO_Name__c":"Distal sensory impairment","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002527","HPO_Synonym__c":"Falls","HPO_Name__c":"Falls","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the Achilles tendon.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005109","HPO_Synonym__c":"Abnormality of the Achilles tendon; Abnormality of the calcaneal tendon","HPO_Name__c":"Abnormal Achilles tendon morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Facial nerve palsy is a dysfunction of cranial nerve VII (the facial nerve) that results in inability to control facial muscles on the affected side with weakness of the muscles of facial expression and eye closure. This can either be present in unilateral or bilateral form.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010628","HPO_Synonym__c":"Bell's palsy; Cranial nerve VII palsy; Facial nerve palsy; Facial nerve paralysis; Facial palsy, unilateral or bilateral; Seventh cranial nerve palsy; VII th cranial nerve palsy","HPO_Name__c":"Facial palsy","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The presence of an abnormal lateral curvature of the spine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002650","HPO_Name__c":"Scoliosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced strength and weakness of the muscles of the arms and legs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003690","HPO_Synonym__c":"Limb muscle weakness; Limb weakness","HPO_Name__c":"Limb muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Absence of neurologic reflexes such as the knee-jerk reaction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001284","HPO_Synonym__c":"Absent deep tendon reflexes; Absent tendon reflexes; Deep tendon reflexes absent; Loss of deep tendon reflexes; Lost deep tendon reflexes","HPO_Name__c":"Areflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduced amount of myelin in the central nervous system resulting from defective myelinogenesis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003429","HPO_Name__c":"CNS hypomyelination","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Upturning of the big toe (and sometimes fanning of the other toes) in response to stimulation of the sole of the foot. If the Babinski sign is present it can indicate damage to the corticospinal tract.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003487","HPO_Synonym__c":"Extensor plantar reflexes; Extensor plantar response; Extensor plantar responses; Positive Babinski sign","HPO_Name__c":"Babinski sign","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","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:643","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Talipes equinovarus (also called clubfoot) typically has four main components: inversion and adduction of the forefoot; inversion of the heel and hindfoot; equinus (limitation of extension) of the ankle and subtalar joint; and internal rotation of the leg.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001762","HPO_Synonym__c":"Club feet; Club foot; Clubbing of feet; Clubfeet; Clubfoot; Equinovarus; Foot, talipes equinovarus; Pes equinovarus; Pes equinus","HPO_Name__c":"Talipes equinovarus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Any structural anomaly of the hand.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005922","HPO_Synonym__c":"Abnormal shape of hand","HPO_Name__c":"Abnormal hand morphology","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Generalized muscular hypotonia (abnormally low muscle tone).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001290","HPO_Synonym__c":"Generalized decreased muscle tone; Generalized muscular hypotonia; Hypotonia, generalized","HPO_Name__c":"Generalized hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A lack of strength of the proximal muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003701","HPO_Synonym__c":"Muscle weakness, proximal; Proximal limb muscle weakness; Proximal limb weakness; Weakness in muscles of upper arms and upper legs","HPO_Name__c":"Proximal muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:643","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002317","HPO_Synonym__c":"Gait instability; Unsteady walk","HPO_Name__c":"Unsteady gait","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Neurodevelopmental disabilities","Neuromuscular medicine","Pediatrics"],"Account":["Peripheral Neuropathy"]},"synonyms":["gan"," gan giant axonal neuropathy"," gan1"," giant axonal neuropathy 1, autosomal recessive"," giant axonal neuropathy caused by mutation in gan"," giant axonal neuropathy type 1"," giant axonal neuropathy-1"]}