{"Name":"Charcot-Marie-Tooth disease axonal type 2N","DiseaseID__c":"GARD:0012429","id":12429,"encodedName":"charcot-marie-tooth-disease-axonal-type-2n","IsDeleted":false,"Disease_Name_Full__c":"Charcot-Marie-Tooth disease axonal type 2N","Xref_IDs__c":"719515001; C2750090; C567653; DOID:0110177; MEDGEN:413754; MONDO:0013212; OMIM:613287; ORPHA:228174","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":4,"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":3,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0013212","Disease_Description__c":"A mild form of axonal Charcot-Marie-Tooth disease, a peripheral sensorimotor neuropathy, characterized by distal legs sensory loss and weakness that can be asymmetric. Tendon reflexes are reduced in the knees and absent in ankles. Progression is slow.","GARD_Name__c":"Charcot-Marie-Tooth disease axonal type 2N","GARD_Synonym__c":"aars charcot-marie-tooth disease type 2; autosomal dominant axonal charcot-marie-tooth disease type 2n; autosomal dominant charcot-marie-tooth disease type 2n; charcot-marie-tooth disease type 2 caused by mutation in aars; charcot-marie-tooth disease, axonal, autosomal dominant, type 2n; charcot-marie-tooth neuropathy axonal type 2n; charcot-marie-tooth neuropathy type 2n; charcot-marie-tooth neuropathy, axonal, type 2n; cmt2n","Curated_Disease_Description_Source__c":"MONDO:0013212","Curated_Disease_Description__c":"A mild form of axonal Charcot-Marie-Tooth disease, a peripheral sensorimotor neuropathy, characterized by distal legs sensory loss and weakness that can be asymmetric. Tendon reflexes are reduced in the knees and absent in ankles. Progression is slow.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"at any time in life","SourceID__c":"ORPHA:228174","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0013212","ORPHANET_ID__c":"ORPHA:228174","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Enfermedad de charcot-marie-tooth tipo 2n","Spanish_Description_Source__c":"ORPHA:228174","Spanish_Description__c":"Es una forma axonal leve de la enfermedad de Charcot-Marie-Tooth, una neuropatía periférica sensorial y motora, que se caracteriza por pérdida sensorial distal en las piernas y debilidad que puede ser asimétrica. Los reflejos tendinosos están reducidos en las rodillas y ausentes en los tobillos. Su progresión es lenta.","Spanish_Disease_Name__c":"enfermedad de charcot-marie-tooth tipo 2n","Spanish_GARD_Synonym__c":"cmt2n","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":"A mild form of axonal Charcot-Marie-Tooth disease, a peripheral sensorimotor neuropathy, characterized by distal legs sensory loss and weakness that can be asymmetric. Tendon reflexes are reduced in the knees and absent in ankles. Progression is slow.","Curated_Disease_Description_Source__c":"MONDO:0013212","GARD_Synonym__c":"aars charcot-marie-tooth disease type 2; autosomal dominant axonal charcot-marie-tooth disease type 2n; autosomal dominant charcot-marie-tooth disease type 2n; charcot-marie-tooth disease type 2 caused by mutation in aars; charcot-marie-tooth disease, axonal, autosomal dominant, type 2n; charcot-marie-tooth neuropathy axonal type 2n; charcot-marie-tooth neuropathy type 2n; charcot-marie-tooth neuropathy, axonal, type 2n; cmt2n","Name":"Charcot-Marie-Tooth disease axonal type 2N","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"CMT Research Foundation","Website__c":"https://cmtrf.org/"},{"Account_Name__c":"Muscular Dystrophy Canada","Website__c":"https://muscle.ca/"},{"Account_Name__c":"Charcot-Marie-Tooth Association Australia Inc.","Website__c":"https://www.cmt.org.au"}],"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":"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":"All ages","Provided_By__c":"ORPHA:228174"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C2750090"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C567653","Source__c":"MONDO:0013212","Xref__c":"C567653"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=413754","Source__c":"C2750090","Xref__c":"MEDGEN:413754"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0110177","Source__c":"MONDO:0013212","Xref__c":"DOID:0110177"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=719515001","Source__c":"C2750090; MONDO:0013212","Xref__c":"719515001"},{"URL__c":"https://www.omim.org/entry/613287","Source__c":"C2750090; MONDO:0013212; ORPHA:228174","Xref__c":"OMIM:613287"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C2750090","Source__c":"C2750090","Xref__c":"C2750090"},{"URL__c":"https://www.orpha.net/en/disease/detail/228174","Source__c":"C2750090; MONDO:0013212; ORPHA:228174","Xref__c":"ORPHA:228174"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0013212","Source__c":"GARD:0012429","Xref__c":"MONDO:0013212"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"AARS1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:613287","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":"OMIM:613287","Feature__r":{"HPO_Description__c":"Hyperextension of the metatarsal-phalangeal joint with hyperflexion of the proximal interphalangeal (PIP) joint.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001765","HPO_Synonym__c":"Hammer toe; Hammertoe; Hammertoes","HPO_Name__c":"Hammertoe","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:613287","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":"OMIM:613287","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduction of neurologic reflexes such as the knee-jerk reaction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001265","HPO_Synonym__c":"Decreased reflex response; Decreased reflexes","HPO_Name__c":"Hyporeflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:613287","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":"OMIM:613287","Feature__r":{"HPO_Description__c":"The presence of skeletal muscular atrophy (which is also known as amyotrophy).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003202","HPO_Synonym__c":"Amyotrophy; Amyotrophy involving the extremities; Muscle atrophy; Muscle atrophy, neurogenic; Muscle degeneration; Muscle hypotrophy; Muscle wasting; Muscular atrophy; Neurogenic muscle atrophy; Neurogenic muscle atrophy, especially in the lower limbs; Neurogenic muscular atrophy","HPO_Name__c":"Skeletal muscle atrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:613287","HPO_Frequency__c":"Very frequent (80-99%)","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":"OMIM:613287","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Weakness of the muscles of the legs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007340","HPO_Synonym__c":"Leg weakness; Lower extremity weakness; Lower limb muscle weakness; Lower limb weakness; Muscle weakness in lower limbs","HPO_Name__c":"Lower limb muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:613287","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Absence of the Achilles reflex (also known as the ankle jerk reflex), which can normally be elicited by tapping the tendon is tapped while the foot is dorsiflexed.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003438","HPO_Synonym__c":"Absent ankle reflexes","HPO_Name__c":"Absent Achilles reflex","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:613287","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":"OMIM:613287","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":"OMIM:613287","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":"OMIM:613287","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":"OMIM:613287","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Muscular atrophy of distal leg muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008944","HPO_Synonym__c":"Lower leg amyotrophy; Lower limb degeneration; Muscle atrophy, lower limb, distal","HPO_Name__c":"Distal lower limb amyotrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Neuromuscular medicine","Pediatrics"],"Account":["Peripheral Neuropathy"]},"synonyms":["aars charcot-marie-tooth disease type 2"," autosomal dominant axonal charcot-marie-tooth disease type 2n"," autosomal dominant charcot-marie-tooth disease type 2n"," charcot-marie-tooth disease type 2 caused by mutation in aars"," charcot-marie-tooth disease, axonal, autosomal dominant, type 2n"," charcot-marie-tooth neuropathy axonal type 2n"," charcot-marie-tooth neuropathy type 2n"," charcot-marie-tooth neuropathy, axonal, type 2n"," cmt2n"]}