Autosomal dominant Charcot-Marie-Tooth disease type 2A2

A subtype of Autosomal dominant Charcot-Marie-Tooth disease type 2 characterized by the childhood onset of distal weakness and areflexia (with earlier and more severe involvement of the lower extremities), reduced sensory modalities (primarily pain and temperature sensation), foot deformities, postural tremor, scoliosis and contractures. Optic atrophy, vocal cord palsy with dysphonia, sensorineural hearing loss, spinal cord abnormalities and hydrocephalus have also been reported.



Input patient's signs and symptoms


Narrow down the case reports



Total: 2 (papers)

  


(per page)
Matched Phenotype  Gene  Mutation  MeSH
Rank
(Similarity)
PMID
(PMCID)
1
(5.0%)
23733358
Ethambutol toxicity exacerbating the phenotype of CMT2A2.
Fonkem E, Skordilis MA, Binkley EM, Raymer DS, Epstein A, Arnold WD, Kissel JT, Lawson VH.
Muscle Nerve. 2013;48(1):140-4.
Optic atrophy
MFN2 OPA1
c|SUB|T|669|G p|SUB|F|223|L
Charcot-Marie-Tooth Disease Females Homo sapiens Middle Aged Phenotype
1
(5.0%)
22762946
Mitofusin 2 gene mutation causing early-onset CMT2A with different progressive courses.
Lv H, Wang L, Li W, Qiao X, Li Y, Wang Z, Yuan Y.
Clin Neuropathol. 2013;32(1):16-23.
Limb muscle weakness
KIF1B MFN2
p|SUB|R|364|W;RS#:119103265 p|SUB|R|94|W;RS#:119103263 p|SUB|W|740|R
Adult Age of Onset Base Sequence Charcot-Marie-Tooth Disease Child Child, Preschool Disease Progression Females Genotype Guanosine Triphosphate Phosphohydrolases Homo sapiens Male Middle Aged Mitochondrial Proteins Molecular Sequence Data Mutation Phenotype Young Adult
        

Phenotype(s) retrieved from Orphanet

    Total: 45

HPO ID Term Frequency
HP:0001760 Abnormality of the foot Very frequent (99-80%)
HP:0003390 Sensory axonal neuropathy Very frequent (99-80%)
HP:0003438 Absent Achilles reflex Very frequent (99-80%)
HP:0003444 EMG: chronic denervation signs Very frequent (99-80%)
HP:0003474 Sensory impairment Very frequent (99-80%)
HP:0009027 Foot dorsiflexor weakness Very frequent (99-80%)
HP:0001155 Abnormality of the hand Frequent (79-30%)
HP:0001761 Pes cavus Frequent (79-30%)
HP:0002359 Frequent falls Frequent (79-30%)
HP:0002378 Hand tremor Frequent (79-30%)
HP:0002495 Impaired vibratory sensation Frequent (79-30%)
HP:0002522 Areflexia of lower limbs Frequent (79-30%)
HP:0002601 Paresis of extensor muscles of the big toe Frequent (79-30%)
HP:0002936 Distal sensory impairment Frequent (79-30%)
HP:0003394 Muscle spasm Frequent (79-30%)
HP:0003551 Difficulty climbing stairs Frequent (79-30%)
HP:0006460 Increased laxity of ankles Frequent (79-30%)
HP:0007010 Poor fine motor coordination Frequent (79-30%)
HP:0007328 Impaired pain sensation Frequent (79-30%)
HP:0009046 Difficulty running Frequent (79-30%)
HP:0009053 Distal lower limb muscle weakness Frequent (79-30%)
HP:0010829 Impaired temperature sensation Frequent (79-30%)
HP:0025238 Foot pain Frequent (79-30%)
HP:0030237 Hand muscle weakness Frequent (79-30%)
HP:0001371 Flexion contracture Occasional (29-5%)
HP:0001605 Vocal cord paralysis Occasional (29-5%)
HP:0001609 Hoarse voice Occasional (29-5%)
HP:0001618 Dysphonia Occasional (29-5%)
HP:0002143 Abnormality of the spinal cord Occasional (29-5%)
HP:0002174 Postural tremor Occasional (29-5%)
HP:0003376 Steppage gait Occasional (29-5%)
HP:0003401 Paresthesia Occasional (29-5%)
HP:0003487 Babinski sign Occasional (29-5%)
HP:0003731 Quadriceps muscle weakness Occasional (29-5%)
HP:0006844 Absent patellar reflexes Occasional (29-5%)
HP:0006915 Inability to walk by childhood/adolescence Occasional (29-5%)
HP:0008944 Distal lower limb amyotrophy Occasional (29-5%)
HP:0012452 Restless legs Occasional (29-5%)
HP:0012513 Upper limb pain Occasional (29-5%)
HP:0031108 Triceps weakness Occasional (29-5%)
HP:0000238 Hydrocephalus Very rare (4-1%)
HP:0000407 Sensorineural hearing impairment Very rare (4-1%)
HP:0000648 Optic atrophy Very rare (4-1%)
HP:0000662 Nyctalopia Very rare (4-1%)
HP:0002650 Scoliosis Very rare (4-1%)


Phenotype(s) retrieved from case reports

    Total: 2

HPO ID Term # of case reports
HP:0000648 Optic atrophy 1
HP:0001605 Vocal cord paralysis 1


Causative gene(s) retrieved from Orphanet

    Total: 1

Gene Symbol Gene Name Entrez Gene ID
MFN2 mitofusin 2 9927