{"Name":"Charcot-Marie-Tooth disease X-linked recessive 2","DiseaseID__c":"GARD:0001243","id":1243,"encodedName":"charcot-marie-tooth-disease-x-linked-recessive-2","IsDeleted":false,"Disease_Name_Full__c":"Charcot-Marie-Tooth disease X-linked recessive 2","Xref_IDs__c":"763457000; C1844873; C535302; DOID:0110208; MEDGEN:336803; MONDO:0010550; OMIM:302801; ORPHA:101076","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":6,"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":2,"Description_Source__c":"MONDO:0010550","Disease_Description__c":"A rare genetic peripheral sensorimotor neuropathy characterized by an X-linked recessive inheritance pattern and the infantile-to childhood-onset of progressive, distal muscle weakness and atrophy (more prominent in the lower extremities than in the upper extremities), pes cavus, and absent tendon reflexes. Sensory impairment and intellectual disability has been reported in some individuals.","GARD_Name__c":"Charcot-Marie-Tooth disease X-linked recessive 2","GARD_Synonym__c":"charcot marie tooth disease x-linked recessive 2; charcot-marie-tooth disease x-linked recessive type 2; charcot-marie-tooth disease, x-linked recessive, 2; charcot-marie-tooth neuropathy x type 2; charcot-marie-tooth neuropathy x-linked recessive 2; charcot-marie-tooth neuropathy, x-linked recessive, 2; charcot-marie-tooth neuropathy, x-linked recessive, 2, x-linked recessive; cmtx 2; cmtx2; x-linked charcot-marie-tooth disease type 2","Curated_Disease_Description_Source__c":"ORPHA:101076","Curated_Disease_Description__c":"X-linked Charcot-Marie-Tooth disease type 2 is a rare, genetic, peripheral sensorimotor neuropathy characterized by an X-linked recessive inheritance pattern and the infantile- to childhood-onset of progressive, distal muscle weakness and atrophy (more prominent in the lower extremities than in the upper extremities), pes cavus, and absent tendon reflexes. Sensory impairment and intellectual disability has been reported in some individuals.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as an Infant and as a Child","SourceID__c":"ORPHA:101076","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0010550","ORPHANET_ID__c":"ORPHA:101076","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Enfermedad de charcot-marie-tooth ligada al cromosoma x tipo 2","Spanish_Description_Source__c":"ORPHA:101076","Spanish_Description__c":"La enfermedad de Charcot-Marie-Tooth tipo 2 ligada al cromosoma X es una neuropatía sensitivo-motora periférica, genética y poco frecuente, caracterizada por un patrón de herencia recesivo ligado al cromosoma X y por el inicio neonatal o infancia de debilidad y atrofia muscular progresiva distal (más prominente en las extremidades inferiores que en las extremidades superiores), pie cavo y reflejos tendinosos ausentes. Se ha descrito deterioro sensorial y discapacidad intelectual en algunos individuos.","Spanish_Disease_Name__c":"enfermedad de charcot-marie-tooth ligada al cromosoma x tipo 2","Spanish_GARD_Synonym__c":"cmtx2","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":"X-linked Charcot-Marie-Tooth disease type 2 is a rare, genetic, peripheral sensorimotor neuropathy characterized by an X-linked recessive inheritance pattern and the infantile- to childhood-onset of progressive, distal muscle weakness and atrophy (more prominent in the lower extremities than in the upper extremities), pes cavus, and absent tendon reflexes. Sensory impairment and intellectual disability has been reported in some individuals.","Curated_Disease_Description_Source__c":"ORPHA:101076","GARD_Synonym__c":"charcot marie tooth disease x-linked recessive 2; charcot-marie-tooth disease x-linked recessive type 2; charcot-marie-tooth disease, x-linked recessive, 2; charcot-marie-tooth neuropathy x type 2; charcot-marie-tooth neuropathy x-linked recessive 2; charcot-marie-tooth neuropathy, x-linked recessive, 2; charcot-marie-tooth neuropathy, x-linked recessive, 2, x-linked recessive; cmtx 2; cmtx2; x-linked charcot-marie-tooth disease type 2","Name":"Charcot-Marie-Tooth disease X-linked recessive 2","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","Website__c":"https://www.cmtausa.org/"},{"Account_Name__c":"Hereditary Neuropathy Foundation Inc.","Website__c":"https://www.hnf-cure.org/"},{"Account_Name__c":"Charcot-Marie-Tooth UK","Website__c":"https://www.cmt.org.uk/"},{"Account_Name__c":"Muscular Dystrophy Association","Website__c":"https://www.mda.org"},{"Account_Name__c":"Muscular Dystrophy UK","Website__c":"https://www.musculardystrophyuk.org/"},{"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":"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":"Otolaryngology","Tag_Category__c":"Specialist"},{"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":"Infancy","Provided_By__c":"ORPHA:101076"},{"Age_At_Onset__c":"Childhood","Provided_By__c":"ORPHA:101076"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C1844873"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=336803","Source__c":"C1844873","Xref__c":"MEDGEN:336803"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0110208","Source__c":"MONDO:0010550","Xref__c":"DOID:0110208"},{"URL__c":"https://www.omim.org/entry/302801","Source__c":"C1844873; MONDO:0010550; ORPHA:101076","Xref__c":"OMIM:302801"},{"URL__c":"https://www.orpha.net/en/disease/detail/101076","Source__c":"C1844873; MONDO:0010550; ORPHA:101076","Xref__c":"ORPHA:101076"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C535302","Source__c":"MONDO:0010550","Xref__c":"C535302"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C1844873","Source__c":"C1844873","Xref__c":"C1844873"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=763457000","Source__c":"C1844873; MONDO:0010550","Xref__c":"763457000"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0010550","Source__c":"GARD:0001243","Xref__c":"MONDO:0010550"}],"Inheritance__c":["X-linked recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Atrophy of the intrinsic muscle groups of the hand, comprising the thenar and hypothenar muscles; the interossei muscles; and the lumbrical muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008954","HPO_Name__c":"Intrinsic hand muscle atrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","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:101076","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:101076","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:101076","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Partial loss of the ability to move the lower limbs accompanied by spasticity of the lower limbs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002313","HPO_Name__c":"Spastic paraparesis","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001138","HPO_Synonym__c":"Damaged optic nerve","HPO_Name__c":"Optic neuropathy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A pale yellow discoloration of the optic disc (the area of the optic nerve head in the retina). The optic disc normally has a pinkish hue with a central yellowish depression.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000543","HPO_Synonym__c":"Pale optic disc","HPO_Name__c":"Optic disc pallor","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An unintentional, oscillating to-and-fro muscle movement affecting the hand.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002378","HPO_Synonym__c":"Hand tremor; Tremor of hand; Tremor of hands; tremors in hands","HPO_Name__c":"Hand tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Evidence of chronic denervation on electromyography.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003444","HPO_Name__c":"EMG: chronic denervation signs","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Procedure_EMG"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Frequent (30-79%)","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:101076","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Wasting of the tibialis anterior muscle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011399","HPO_Synonym__c":"Sharp shin sign; Tibialis anterior amyotrophy; Tibialis muscle degeneration","HPO_Name__c":"Tibialis anterior muscle atrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","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:101076","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:101076","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001347","HPO_Synonym__c":"Increased deep tendon reflexes; Increased reflexes","HPO_Name__c":"Hyperreflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Occasional (5-29%)","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":"ORPHA:101076","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal gait pattern that arises from weakness of the pretibial and peroneal muscles due to a lower motor neuron lesion. Affected patients have footdrop and are unable to dorsiflex and evert the foot. The leg is lifted high on walking so that the toes clear the ground, and there may be a slapping noise when the foot strikes the ground again.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003376","HPO_Synonym__c":"High stepping","HPO_Name__c":"Steppage gait","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Frequent (30-79%)","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:101076","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Clasp-knife phenomenon refers to increased muscle tone while bending or stretching a limb, whereby there is a sudden relaxation (decrease in resistance) as the muscle continues to be stretched. This phenomenon has been likened to opening a clasp knife.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0031866","HPO_Name__c":"Clasp-knife sign","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Weakness of the peroneal muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011727","HPO_Synonym__c":"Fibularis muscle weakness","HPO_Name__c":"Peroneal muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","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:101076","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduced strength of the distal musculature of the legs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0009053","HPO_Synonym__c":"Distal muscle weakness in lower limbs; Muscle weakness, lower limb, distal","HPO_Name__c":"Distal lower limb muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","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"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006801","HPO_Name__c":"Hyperactive deep tendon reflexes","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007924","HPO_Synonym__c":"Slow decrease in sharpness of vision; Subacute deterioration of visual acuity","HPO_Name__c":"Slow decrease in visual acuity","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduced strength of the musculature of the hand.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030237","HPO_Synonym__c":"Hand muscle weakness","HPO_Name__c":"Hand muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:101076","HPO_Frequency__c":"Occasional (5-29%)","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"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology","Congenital Abnormality"],"Specialist":["Genetics","Neurology","Otolaryngology","Neurodevelopmental disabilities","Neuromuscular medicine","Pediatrics"],"Account":["Peripheral Neuropathy"]},"synonyms":["charcot marie tooth disease x-linked recessive 2"," charcot-marie-tooth disease x-linked recessive type 2"," charcot-marie-tooth disease, x-linked recessive, 2"," charcot-marie-tooth neuropathy x type 2"," charcot-marie-tooth neuropathy x-linked recessive 2"," charcot-marie-tooth neuropathy, x-linked recessive, 2"," charcot-marie-tooth neuropathy, x-linked recessive, 2, x-linked recessive"," cmtx 2"," cmtx2"," x-linked charcot-marie-tooth disease type 2"]}