{"Name":"Charcot-Marie-Tooth disease type 4C","DiseaseID__c":"GARD:0009201","id":9201,"encodedName":"charcot-marie-tooth-disease-type-4c","IsDeleted":false,"Disease_Name_Full__c":"Charcot-Marie-Tooth disease type 4C","Xref_IDs__c":"715797002; C129864; C1866636; C535423; DOID:0110183; MEDGEN:356581; MONDO:0011113; OMIM:601596; ORPHA:99949","USA_Estimate__c":null,"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":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":1,"Description_Source__c":"MONDO:0011113","Disease_Description__c":"Charcot-Marie-Tooth disease type 4C (CMT4C) is a subtype of Charcot-Marie-Tooth type 4 characterized by childhood or adolescent-onset of a relatively mild, demyelinating sensorimotor neuropathy that contrasts with a severe, rapidly progressing, early-onset scoliosis, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and often foot deformity). A wide spectrum of nerve conduction velocities are observed and cranial nerve involvement and kyphoscoliosis have also been reported.","GARD_Name__c":"Charcot-Marie-Tooth disease type 4C","GARD_Synonym__c":"autosomal recessive demyelinating charcot-marie-tooth disease type 4c; charcot-marie-tooth disease type 4 caused by mutation in sh3tc2; charcot-marie-tooth disease, demyelinating, autosomal recessive, type 4c; charcot-marie-tooth disease, demyelinating, type 4c; charcot-marie-tooth neuropathy type 4c; charcot-marie-tooth neuropathy type 4c (cmt4c); cmt 4c; cmt4c; sh3tc2 charcot-marie-tooth disease type 4","Curated_Disease_Description_Source__c":"PlainLanguagePilotV2-Jan24","Curated_Disease_Description__c":"Charcot-Marie-Tooth disease type 4C (CMT4C) is a relatively mild demyelinating neuropathy. It is characterized by early-onset severe spine deformities. Most affected individuals present with scoliosis (sideways curvature of the spine). Or, they have kyphoscoliosis (forward curvature of the spine) during the first decade. Slowly progressive neuropathy usually manifests during childhood or adolescence. Foot deformities are common. CMT4C is caused by mutations in the SH3TC2 gene. It follows an autosomal recessive pattern of inheritance.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":"as a Child","SourceID__c":"ORPHA:99949","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0011113","ORPHANET_ID__c":"ORPHA:99949","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Enfermedad de charcot-marie-tooth tipo 4c","Spanish_Description_Source__c":"ORPHA:99949","Spanish_Description__c":"La enfermedad de Charcot-Marie-Tooth tipo 4C (CMT4C) es un subtipo de la enfermedad de Charcot-Marie-Tooth tipo 4 caracterizado por el inicio en la infancia o adolescencia de una neuropatía sensitivo-motora desmielinizante relativamente leve que contrasta con una escoliosis grave, rápidamente progresiva de inicio temprano, y el fenotipo típico de CMT (es decir, debilidad y atrofia muscular distal, pérdida sensorial y, a menudo, deformidad de los pies). El espectro de velocidades de conducción nerviosa observado es muy amplio y también se ha descrito afectación de nervios craneales y cifoscoliosis.","Spanish_Disease_Name__c":"enfermedad de charcot-marie-tooth tipo 4c","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":"Charcot-Marie-Tooth disease type 4C (CMT4C) is a relatively mild demyelinating neuropathy. It is characterized by early-onset severe spine deformities. Most affected individuals present with scoliosis (sideways curvature of the spine). Or, they have kyphoscoliosis (forward curvature of the spine) during the first decade. Slowly progressive neuropathy usually manifests during childhood or adolescence. Foot deformities are common. CMT4C is caused by mutations in the SH3TC2 gene. It follows an autosomal recessive pattern of inheritance.","Curated_Disease_Description_Source__c":"PlainLanguagePilotV2-Jan24","GARD_Synonym__c":"autosomal recessive demyelinating charcot-marie-tooth disease type 4c; charcot-marie-tooth disease type 4 caused by mutation in sh3tc2; charcot-marie-tooth disease, demyelinating, autosomal recessive, type 4c; charcot-marie-tooth disease, demyelinating, type 4c; charcot-marie-tooth neuropathy type 4c; charcot-marie-tooth neuropathy type 4c (cmt4c); cmt 4c; cmt4c; sh3tc2 charcot-marie-tooth disease type 4","Name":"Charcot-Marie-Tooth disease type 4C","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Muscular Dystrophy Association","Website__c":"https://www.mda.org"},{"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 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":"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":"Childhood","Provided_By__c":"ORPHA:99949"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C1866636"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1358","Xref__c":"NBK1358"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1340","Source__c":"Gene Review","Xref__c":"NBK1340"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=356581","Source__c":"C1866636","Xref__c":"MEDGEN:356581"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=715797002","Source__c":"C1866636; MONDO:0011113","Xref__c":"715797002"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C1866636","Source__c":"C1866636","Xref__c":"C1866636"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C535423","Source__c":"MONDO:0011113","Xref__c":"C535423"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C129864","Source__c":"C1866636; MONDO:0011113","Xref__c":"C129864"},{"URL__c":"https://www.omim.org/entry/601596","Source__c":"C1866636; MONDO:0011113; ORPHA:99949","Xref__c":"OMIM:601596"},{"URL__c":"https://www.orpha.net/en/disease/detail/99949","Source__c":"C1866636; MONDO:0011113; ORPHA:99949","Xref__c":"ORPHA:99949"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0110183","Source__c":"MONDO:0011113","Xref__c":"DOID:0110183"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0011113","Source__c":"GARD:0009201","Xref__c":"MONDO:0011113"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"SH3TC2","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000648","HPO_Synonym__c":"Optic nerve atrophy; Optic-nerve degeneration","HPO_Name__c":"Optic atrophy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000639","HPO_Synonym__c":"Involuntary, rapid, rhythmic eye movements","HPO_Name__c":"Nystagmus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004302","HPO_Synonym__c":"Functional motor problems","HPO_Name__c":"Functional motor deficit","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","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:99949","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A loss of myelinated nerve fibers in the peripheral nervous system (in general, this finding can be observed on nerve biopsy).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003380","HPO_Synonym__c":"Decreased number of large and small myelinated fibers; Loss of myelinated fibers","HPO_Name__c":"Decreased number of peripheral myelinated nerve fibers","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The patient stands with the feet placed together and balance and is asked to close his or her eyes. A loss of balance upon eye closure is a positive Romberg sign and is interpreted as indicating a deficit in proprioception.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002403","HPO_Name__c":"Positive Romberg sign","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"An outward deviation of the foot at the talocalcaneal or subtalar joint.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008081","HPO_Synonym__c":"Valgus foot deformity","HPO_Name__c":"Pes valgus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Muscular atrophy affecting muscles in the distal portions of the extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003693","HPO_Synonym__c":"Amyotrophy of distal limb muscles; Distal amyotrophy, especially of the hands and feet; Distal limb muscle atrophy; Distal muscle atrophy; Distal muscle atrophy, upper and lower limbs; Distal muscle degeneration; Distal muscle wasting; Distal muscular atrophy; Muscle atrophy, distal","HPO_Name__c":"Distal amyotrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","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:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormality of the optic nerve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000587","HPO_Synonym__c":"Abnormality of the optic nerve; optic nerve abnormalities; Optic nerve issue","HPO_Name__c":"Abnormal optic nerve morphology","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Complete loss of ability to move facial muscles innervated by the facial nerve (i.e., the seventh cranial nerve).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007209","HPO_Synonym__c":"Facial paralysis; Facial paresis","HPO_Name__c":"Facial paralysis","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Incapability to ambulate.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002540","HPO_Synonym__c":"Inability to walk; Non-ambulatory","HPO_Name__c":"Inability to walk","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Very frequent (80-99%)","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:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A foot where the longitudinal arch of the foot is in contact with the ground or floor when the individual is standing; or, in a patient lying supine, a foot where the arch is in contact with the surface of a flat board pressed against the sole of the foot by the examiner with a pressure similar to that expected from weight bearing; or, the height of the arch is reduced.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001763","HPO_Synonym__c":"Flat feet; Flat foot","HPO_Name__c":"Pes planus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","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"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Very frequent (80-99%)","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:99949","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:99949","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:99949","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of ataxia characterized by the impairment of the ability to coordinate the movements required for normal walking. Gait ataxia is characteirzed by a wide-based staggering gait with a tendency to fall.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002066","HPO_Synonym__c":"Ataxia of gait; Ataxic gait; Inability to coordinate movements when walking","HPO_Name__c":"Gait ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An unintentional, oscillating to-and-fro muscle movement affecting head movement.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002346","HPO_Synonym__c":"Head tremor","HPO_Name__c":"Head tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A decrease in the ability to perceive vibration in the distal portions of the limbs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006886","HPO_Synonym__c":"Decreased distal vibration sense","HPO_Name__c":"Impaired distal vibration sensation","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced strength of one or more muscles innervated by the facial nerve (the seventh cranial nerve).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030319","HPO_Synonym__c":"Decreased facial muscle strength; Decreased strength of facial muscles; Face weakness; Facial muscle weakness; Facial weakness; Myasthenia of facial muscles; Reduced facial muscle strength; Weakness of face; Weakness of facial musculature","HPO_Name__c":"Weakness of facial musculature","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001508","HPO_Synonym__c":"Faltering weight; FTT; Postnatal failure to thrive; Weight faltering","HPO_Name__c":"Failure to thrive","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The presence of developmental dysplasia of the hip.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001385","HPO_Synonym__c":"Congenital hip dysplasia; DDH; Developmental dysplasia of the hip","HPO_Name__c":"Hip dysplasia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002093","HPO_Synonym__c":"Respiratory impairment","HPO_Name__c":"Respiratory insufficiency","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction in the amount of air transported into the pulmonary alveoli by breathing, leading to hypercapnia (increase in the partial pressure of carbon dioxide).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002791","HPO_Synonym__c":"Alveolar hypoventilation; Slow breathing; Under breathing","HPO_Name__c":"Hypoventilation","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Anisocoria, or unequal pupil size, may represent a benign physiologic variant or a manifestation of disease.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0009916","HPO_Synonym__c":"Asymmetric pupil sizes; Asymmetry of the pupils; Unequal pupil dilatation; Unequal pupil size","HPO_Name__c":"Anisocoria","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced ability to perceive painful stimuli.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007328","HPO_Synonym__c":"Decreased pain sensation; Decreased pinprick sensation; Impaired pain sensation","HPO_Name__c":"Impaired pain sensation","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","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:99949","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Pain in muscle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003326","HPO_Synonym__c":"Muscle ache; Muscle pain","HPO_Name__c":"Myalgia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","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:99949","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"Loss of peripheral vision with retention of central vision, resulting in a constricted circular tunnel-like field of vision.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007994","HPO_Synonym__c":"Kalnienk vision; Loss of peripheral vision","HPO_Name__c":"Peripheral visual field loss","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"A neuropathic disorder characterized by episodes of intense pain in the face, originating from the trigeminal nerve. One, two, or all three branches of the nerve may be affected.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100661","HPO_Synonym__c":"Tic douloureux","HPO_Name__c":"Trigeminal neuralgia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Decreased strength of the vocal folds.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001604","HPO_Synonym__c":"Hoarse voice due to vocal cord paresis; Vocal cord paresis in severe cases; Weakness of the vocal cords","HPO_Name__c":"Vocal cord paresis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced strength of the tongue musculature, resulting in difficulties moving the tongue and possible accompanied by dysarthria or dysphagia.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000183","HPO_Name__c":"Tongue muscle weakness","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","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:99949","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Fasciculations or fibrillation affecting the tongue muscle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001308","HPO_Synonym__c":"Lingual fasciculations; Lingual fibrillations; Lingual twitching; Tongue fasciculation; Tongue fasciculations/fibrillations; Tongue twitching; Twitching of the tongue","HPO_Name__c":"Tongue fasciculations","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:99949","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002359","HPO_Synonym__c":"Frequent falls","HPO_Name__c":"Frequent falls","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A progressive disorder of vertebral joint degeneration that occurs in the setting of any condition characterized by decreased afferent innervation, involving loss of deep pain and proprioceptive sensation in the vertebral column. Patients most commonly present with symptoms of lower back pain, sitting imbalance, progressive spinal deformity (usually kyphosis), and an audible clicking sound on changing postures.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008443","HPO_Synonym__c":"Charcot spinal arthropathy; Spinal deformities; Spinal neuroarthropathy","HPO_Name__c":"Neuropathic spinal arthropathy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Habitual flow of saliva out of the mouth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002307","HPO_Synonym__c":"Dribbling; Drooling; Sialorrhea","HPO_Name__c":"Drooling","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Wasting of the tongue.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012473","HPO_Synonym__c":"Atrophy of the tongue; Lingual atrophy; Lingual wasting; Wasting of the tongue","HPO_Name__c":"Tongue atrophy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Incoordination of movement caused by a deficit in the sensory nervous system. Sensory ataxia can be distinguished from cerebellar ataxia by asking the patient to close his or her eyes. Persons with cerebellar ataxia show only a minimal worsening of symptoms, whereas persons with sensory ataxia show a marked worsening of symptoms.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010871","HPO_Synonym__c":"Afferent ataxia; Ataxia, sensory; Spinal ataxia","HPO_Name__c":"Sensory ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Very frequent (80-99%)","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:99949","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Sudden and involuntary contractions of one or more muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003394","HPO_Synonym__c":"Muscle cramps; Muscle spasms","HPO_Name__c":"Muscle spasm","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the skeleton of foot.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001760","HPO_Synonym__c":"Abnormal feet structure; Abnormality of the feet; Abnormality of the foot; Foot deformities; Foot deformity","HPO_Name__c":"Abnormal foot morphology","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Dysarthric speech is a general description referring to a neurological speech disorder characterized by poor articulation. Depending on the involved neurological structures, dysarthria may be further classified as spastic, flaccid, ataxic, hyperkinetic and hypokinetic, or mixed.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001260","HPO_Synonym__c":"Difficulty articulating speech; Dysarthric speech","HPO_Name__c":"Dysarthria","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of the reflex that controls the diameter of the pupil, in response to the intensity of light that falls on the retina of the eye.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007695","HPO_Name__c":"Abnormal pupillary light reflex","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","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:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Diplopia is a condition in which a single object is perceived as two images, it is also known as double vision.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000651","HPO_Synonym__c":"Double vision","HPO_Name__c":"Diplopia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:99949","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000486","HPO_Synonym__c":"Cross-eyed; Squint; Squint eyes","HPO_Name__c":"Strabismus","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Neuromuscular medicine","Pediatrics"],"Account":["Peripheral Neuropathy"]},"synonyms":["autosomal recessive demyelinating charcot-marie-tooth disease type 4c"," charcot-marie-tooth disease type 4 caused by mutation in sh3tc2"," charcot-marie-tooth disease, demyelinating, autosomal recessive, type 4c"," charcot-marie-tooth disease, demyelinating, type 4c"," charcot-marie-tooth neuropathy type 4c"," charcot-marie-tooth neuropathy type 4c (cmt4c)"," cmt 4c"," cmt4c"," sh3tc2 charcot-marie-tooth disease type 4"]}