SE-ATLAS

Myotone Dystrophie Steinert mit spätem Beginn Guillain-Barré-Syndrom, pharyngeal-zervikal-brachiale Variante Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2, durch KIF5A-Genmutation Freeman-Sheldon-Syndrom Neuropathie, hereditäre motorisch-sensorische, Typ 6 Myotone Dystrophie Steinert, juvenile Form Myotone Dystrophie Steinert mit Beginn im Erwachsenenalter Gliedergürtelmuskeldystrophie, autosomal-rezessive, durch Desmin-Mangel Myasthenische Syndrome, kongenitale, mit Glykosylierungsdefekt Adenosinmonophosphat-Desaminase-Mangel Progressive Muskelatrophie Neuropathie, distale hereditäre motorische, X-chromosomale Myotone Dystrophie Steinert mit Beginn im Kindesalter Botulismus, ernährungsbedingter Paraparetische Variante des Guillain-Barré-Syndroms Neuronopathie, akute reine sensorische Pandysautonomie, akute Neuropathie, akute ataxische sensorische Kyphose-laterale Zungenatrophie-myofibrilläre Myopathie-Syndrom Richieri-Costa-da-Silva-Syndrom Myoklonus-Dystonie-Syndrom Spinale Muskelatrophie, infantile, X-chromosomale Arthrogrypose, distale, Typ 1 Myotonie, kongenitale Glykogenose mit schwerer Kardiomyopathie durch Glycogenin-Mangel Myositis, virale Muskelatrophie, scapuloperoneale spinale Myositis, parasitäre Im Kindesalter beginnende autosomal-rezessive Myopathie mit externer Ophtalmoplegie Neurogenes scapulo-peroneales Syndrom Typ Kaeser Gliedergürtelmuskeldystrophie, autosomal-dominante, Typ 1H Myopathie, idiopathische inflammatorische, juvenile Form Spinale Muskelatrophie mit Atemnot Typ 2 Guillain-Barré-Syndrom Alpha-Sarkoglykan assoziierte Gliedergürtelmuskeldystrophie R3 Spinale Muskelatrophie, proximale Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2, durch MME-Genmutation Fasziitis, eosinophile GMPPB-assoziierte Gliedergürtelmuskeldystrophie R19 Lipidose, muskuläre Glykogenose, muskuläre Neuropathie, distale kongenitale motorische, des jungen Erwachsenen Mitochondriale Myopathie Muskeldystrophie, kongenitale, Typ Ullrich Antisynthetase-Syndrom Muskeldystrophie, megakoniale kongenitale Proximale Myopathie mit fokaler mitochondrialer Depletion Brody-Myopathie Hereditäre Myopathie mit Laktatazidose durch ISCU-Mangel Barth-Syndrom Früh-beginnende progressive Enzephalopathie-spastische Ataxie-distale spinale Muskelatrophie-Syndrom Beta-Sarkoglykan-assoziierte Gliedergürtelmuskeldystrophie R4 Myotones Syndrom Sheldon-Hall-Syndrom Muskelatrophie, scapuloperoneale spinale, mit hyalinen Körperchen, spät beginnende Form Spinale Muskelatrophie mit Atemnot Typ 1 Periodische Paralyse Muskeltumor Succinat-Coenzym-Q-Reduktase-Mangel, isolierter Myopathie bei infektiösen und parasitären Krankheiten Myositis, bakterielle Carnitin-Palmitoyl-Transferase II-Mangel Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2K Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2A1 Fazio-neuro-muskulo-skelettales Syndrom, zyprischer Typ Carnitin-Mangel, primärer systemischer Myositis-Overlap-Syndrom, juveniles Desmin-abhängige Myopathie mit Mallory Körperchen-ähnlichen Einschlüssen Spinale Muskelatrophie mit assoziierten Anomalien des Zentralnervensystems Kurzketten-Acyl-CoA-Dehydrogenase-Mangel Sehr langkettige-Acyl-CoA-Dehydrogenase-Mangel X-chromosomale scapulo-peroneale Muskeldystrophie Neuropathy, motorische, distale, hereditäre, autosomal-dominante Myopathie, idiopathische inflammatorische TRAPPC11-assoziierte Gliedergürtelmuskeldystrophie R18 Neutralfett-Speicherkrankheit Acyl-CoA-Dehydrogenase-Mangel, multipler Muskeldystrophie Skelettmuskel-Krankheit Kongenitale Myopathie mit Myasthenie-ähnlichem Beginn Isaacs-Syndrom Ionenkanalkrankheit, muskuläre Progressive externe Ophthalmoplegie-Myopathie-Kachexie-Syndrom Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2Y Neuropathy, motorische, distale, hereditäre, autosomal-rezessive Myopathie, metabolische Neuromuskuläre Übertragungsstörung Neuromuskuläre Übertragungsstörung, genetisch bedingte Kongenitale benigne spinale Muskelatrophie, autosomal-dominante Form Spinale Atrophie-Ophthalmoplegie-Pyramidenbahn-Symptomatik-Syndrom Krankheit der Vorderhornzellen, autosomal-dominant oder rezessive Myopathie, distale, Typ Tateyama Einschlusskörperchenmyopathie mit Paget-Syndrom und frontotemporaler Demenz ISPD-assoziierte Gliedergürtelmuskeldystrophie R20 Neuromuskuläre Übertragungsstörung, erworbene Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2DD Motoneuronkrankheit Motoneuronkrankheit, erworbene Pontozerebelläre Hypoplasie Typ 1 Mitochondriales DNA-Deletionssyndrom, DNA2-assoziiertes Charcot-Marie-Tooth-Krankheit Typ 1 Delta-Sarkoglykan-assoziierte Gliedergürtelmuskeldystrophie R6 Dermatomyositis Distale Myopathie mit Beginn am vorderen Schienenbein Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2 Schwere Hypotonie-psychomotorische Entwicklungsverzögerung-Strabismus-Septumdefekt-Syndrom Syndrom der kongenitalen generalisierten hyperkontraktilen Muskelsteifheit Botulismus Neuropathie, distale hereditäre motorische, Typ 1 Tel-Hashomer-Kamptodaktylie-Syndrom Myopathie, zentronukleäre, autosomal-rezessive Myopathie, zentronukleäre, autosomal-dominante Neuropathie, hereditäre motorisch-sensorische, Typ 5 Myopathie, letale, kongenitale, Typ Compton-North Hereditäre Einschlusskörperchenmyopathie - Gelenkkontrakturen - Ophthalmoplegie Hyperkontraktile Muskelsteifheit-Syndrom Paralyse, periodische thyreotoxische Epidermolysis bullosa simplex mit Muskeldystrophie Gliedergürtelmuskeldystrophie Gliedergürtelmuskeldystrophie, autosomal-dominante, Typ 1C Gliedergürtelmuskeldystrophie, autosomal-dominante, Typ 1A Kongenitale Muskeldystrophie durch Dystroglykanopathie Myxofibrosarkom Muskeldystrophie, kongenitale, Typ 1A Emery-Dreifuss muscular dystrophy Duchenne and Becker muscular dystrophy Distal hereditary motor neuropathy type 2 Autosomal dominant limb-girdle muscular dystrophy type 1B Congenital muscular dystrophy with cerebellar involvement Calpain-3-related limb-girdle muscular dystrophy R1 Dysferlin-related limb-girdle muscular dystrophy R2 Oculopharyngeal muscular dystrophy Congenital muscular dystrophy, Fukuyama type Distal hereditary motor neuropathy type 5 Distal spinal muscular atrophy type 3 Congenital muscular dystrophy with intellectual disability Facioscapulohumeral dystrophy Steinert myotonic dystrophy Congenital muscular dystrophy due to LMNA mutation X-linked myopathy with postural muscle atrophy Distal hereditary motor neuropathy, Jerash type Hereditary myopathy with early respiratory failure Bickerstaff brainstem encephalitis Multiple acyl-CoA dehydrogenase deficiency, severe neonatal type Congenital muscular dystrophy without intellectual disability Multiple acyl-CoA dehydrogenase deficiency, mild type X-linked distal spinal muscular atrophy type 3 Idiopathic camptocormia Mitochondrial neurogastrointestinal encephalomyopathy Congenital fibrosis of extraocular muscles Muscle-eye-brain disease with bilateral multicystic leucodystrophy Wound botulism TNP03-related limb-girdle muscular dystrophy D2 HNRNPDL-related limb-girdle muscular dystrophy D3 Adenylosuccinate synthetase-like 1-related distal myopathy Intestinal botulism Adult intestinal botulism DPM3-CDG Congenital cataract-progressive muscular hypotonia-hearing loss-developmental delay syndrome Distal hereditary motor neuropathy type 7 Pleomorphic rhabdomyosarcoma Glycogen storage disease due to acid maltase deficiency, infantile onset Transient neonatal myasthenia gravis Infantile-onset ascending hereditary spastic paralysis Congenital muscular dystrophy with hyperlaxity MYH7-related late-onset scapuloperoneal muscular dystrophy TOR1AIP1-related limb-girdle muscular dystrophy Adult-onset myasthenia gravis Myotilinopathy Juvenile myasthenia gravis Carey-Fineman-Ziter syndrome Pyruvate dehydrogenase E3 deficiency Gamma-sarcoglycan-related limb-girdle muscular dystrophy R5 Autosomal dominant mitochondrial myopathy with exercise intolerance Primary triglyceride deposit cardiomyovasculopathy Glycogen storage disease due to acid maltase deficiency Glycogen storage disease due to glycogen debranching enzyme deficiency Glycogen storage disease due to muscle glycogen phosphorylase deficiency X-linked myopathy with excessive autophagy Autosomal dominant Charcot-Marie-Tooth disease type 2 due to DGAT2 mutation Juvenile polymyositis Congenital limbs-face contractures-hypotonia-developmental delay syndrome Proximal myopathy with extrapyramidal signs Glycogen storage disease due to glycogen branching enzyme deficiency Glycogen storage disease due to muscle phosphofructokinase deficiency Intellectual disability-developmental delay-contractures syndrome Lambert-Eaton myasthenic syndrome Proximal spinal muscular atrophy type 1 Idiopathic dropped head syndrome Myotonia permanens Congenital muscular dystrophy-respiratory failure-skin abnormalities-joint hyperlaxity syndrome Plectin-related limb-girdle muscular dystrophy R17 Prenatal-onset spinal muscular atrophy with congenital bone fractures Autosomal dominant Charcot-Marie-Tooth disease type 2U Miyoshi myopathy Glycogen storage disease due to glycogen branching enzyme deficiency, progressive hepatic form Toxin-mediated infectious botulism Myotonia fluctuans Acetazolamide-responsive myotonia Glycogen storage disease due to glycogen branching enzyme deficiency, non progressive hepatic form King-Denborough syndrome Severe congenital nemaline myopathy Congenital muscular alpha-dystroglycanopathy with brain and eye anomalies Embryonal rhabdomyosarcoma POGLUT1-related limb-girdle muscular dystrophy R21 Genetic neurological muscular channelopathy Adult-onset nemaline myopathy Malignant hyperthermia of anesthesia Intermediate nemaline myopathy Alveolar rhabdomyosarcoma Childhood-onset nemaline myopathy Typical nemaline myopathy Periodic paralysis with later-onset distal motor neuropathy Neurological muscular channelopathy due to a genetic sodium channel defect Neurological muscular channelopathy due to a genetic potassium channel defect Peripheral neuropathy-myopathy-hoarseness-hearing loss syndrome Muscle filaminopathy Facial diplegia with paresthesias Neurological muscular channelopathy due to a genetic chloride channel defect Autosomal dominant adult-onset proximal spinal muscular atrophy Neurological muscular channelopathy due to a genetic calcium channel defect Neurological muscular channelopathy due to a genetic ryanodine receptor defect Glycogen storage disease due to glycogen branching enzyme deficiency, congenital neuromuscular form Proximal spinal muscular atrophy type 2 Glycogen storage disease due to glycogen branching enzyme deficiency, childhood neuromuscular form Klippel-Feil anomaly-myopathy-facial dysmorphism syndrome Kennedy disease Distal hereditary motor neuropathy Progressive scapulohumeroperoneal distal myopathy Periodic paralysis with transient compartment-like syndrome Autoimmune neurological channelopathy Autosomal dominant Charcot-Marie-Tooth disease type 2V Pontocerebellar hypoplasia type 2 Proximal spinal muscular atrophy type 4 Congenital muscular dystrophy with intellectual disability and severe epilepsy Kearns-Sayre syndrome Juvenile dermatomyositis Glycogen storage disease due to glycogen branching enzyme deficiency, adult neuromuscular form Symptomatic form of X-linked centronuclear myopathy in female carriers Autosomal dominant myoglobinuria Morvan syndrome Spinal muscular atrophy-progressive myoclonic epilepsy syndrome Tubular aggregate myopathy Autosomal dominant Emery-Dreifuss muscular dystrophy Mitochondrial myopathy-lactic acidosis-deafness syndrome MELAS MERRF Inhalational botulism X-linked Emery-Dreifuss muscular dystrophy Isolated complex I deficiency Vacuolar myopathy with sarcoplasmic reticulum protein aggregates Glycogen storage disease due to acid maltase deficiency, late-onset Congenital muscular dystrophy type 1B Myasthenia gravis Becker muscular dystrophy Genetic recurrent myoglobinuria Glycogen storage disease due to muscle beta-enolase deficiency Spinal muscular atrophy-Dandy-Walker malformation-cataracts syndrome Myopathy and diabetes mellitus Autosomal recessive Emery-Dreifuss muscular dystrophy Mitochondrial myopathy and sideroblastic anemia Autosomal dominant Charcot-Marie-Tooth disease type 2 with giant axons Iatrogenic botulism Autosomal dominant Charcot-Marie-Tooth disease type 2Q Juvenile amyotrophic lateral sclerosis Laminin subunit alpha 2-related limb-girdle muscular dystrophy R23 Autosomal dominant Charcot-Marie-Tooth disease type 2O Muscle-eye-brain disease Congenital myasthenic syndrome Macrophagic myofasciitis Duchenne muscular dystrophy X-linked centronuclear myopathy Multiminicore myopathy Myopathie, okulo-pharyngo-distale Myopathie, myofibrilläre Myopathie, zentronukleäre Central-Core-Myopathie Myopathie, distale Minicore-Myopathie mit externer Ophtalmoplegie Myopathie, kongenitale, mit Exzess dünner Filamente Neutrale Lipidspeicherkrankheit mit Ichthyose Desminopathie Myotilinopathie, distale Nemalin-Myopathie Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2C Nemalin-Myopathie Typ Amish Distale Myopathie mit Stimmband- und Pharynxschwäche GNE-Myopathie Myopathie, distale, Typ Welander Neutralfett-Speicherkrankheit mit Myopathie Myopathie, myotone proximale Alpha-Cristallinopathie Myasthenische Syndrome, kongenitale postsynaptische Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2B Spät-beginnende distale Myopathie Typ Markesbery-Griggs Myasthenische Syndrome, kongenitale synpatische Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2D Einschlusskörper-Myositis Neuropathie, akute axonale motorisch-sensorische Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2F Myopathie mit fataler Kardiomyopathie, früh-beginnende Form Miller-Fisher-Syndrom Myosklerose Muskeldystrophie, tibiale Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2E Bethlem-Myopathie Myasthenische Syndrome, kongenitale präsynaptische Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2G Myotonie, Kalium-sensitive Akute demyelinisierende inflammatorische Polyradikuloneuropathie Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2J Myotonia congenita Typ Thomsen und Becker Neuropathie, akute axonale motorische Multiples mitochondriales DNA-Deletionssyndrom durch DGUOK-Mangel des Erwachsenen Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2I Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2L Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2A2 Charcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2, durch TFG-Genmutation Polyglucosan-Körper-Myopathie Typ 1 O'Sullivan-McLeod-Syndrom Native-American-Myopathie Gliedergürtelmuskeldystrophie, autosomale-dominante X-chromosomale myotubuläre Myopathie-Genitalanomalien-Syndrom Ophthalmoplegie, chronische externe progressive, maternal-vererbte Crampus-Faszikulations-Syndrom Myopathie, kongenitale, Typ Paradas Paralyse, hypokaliämische periodische Paramyotonia congenita Eulenburg Gliedergürtelmuskeldystrophie durch POMK-Mangel Amyotrophe Lateralsklerose Typ 4 Glykogenose durch muskulären Phosphorylasekinase-Mangel Titin-assoziierte Gliedergürtelmuskeldystrophie R10 Ophthalmoplegie, chronische externe progressive, mit mitochondrialer Myopathie, adulte Form Gliedergürtelmuskeldystrophie, autosomale-rezessive POMGNT2-assoziierte Gliedergürtelmuskeldystrophie R24 Motoneuron-Krankheit Madras Mitochondriale Myopathie-zerebelläre Ataxie-Pigmentretinopathie-Syndrom Calpain 3-assoziierte Gliedergürtelmuskeldystrophie D4 Hypotonie-Sprachstörung-schwere kognitive Entwicklungsverzögerung-Syndrom Myopathie, metabolische, durch Laktat-Transporter-Defekt Paralyse, hyperkaliämische periodische Muskeldystrophie Typ Selcen Andersen-Tawil-Syndrom Polyglucosan-Körper-Myopatie Typ 2 Kongenitale Myopathie mit internen Nuclei und atypischen Kernen Glykogenose durch Phosphoglycerat-Kinase 1-Mangel Symptomatische Form der Muskeldystrophie Duchenne und Becker in weiblichen Trägerinnen Telethonin-assoziierte Gliedergürtelmuskeldystrophie R7 Alpha-B Crystallin-abhängige spät beginnende Myopathie Gliedergürtelmuskeldystrophie, autosomal-dominante, Typ 1E Charcot-Marie-Tooth-Krankheit Typ 1A Fukutin-assoziierte Gliedergürtelmuskeldystrophie R13 Charcot-Marie-Tooth-Krankheit Typ 1B Polymyositis Charcot-Marie-Tooth-Krankheit Typ 1D FKRP-assoziierte Gliedergürtelmuskeldystrophie R9 DNAJB6-assoziierte Gliedergürtelmuskeldystrophie D1 Anoctamin-5-assoziierte Gliedergürtelmuskeldystrophie R12 Kongenitale Myopathie mit Integrin-alpha-7-Mangel Myopathie, distale, mit früher Beteiligung der Atemmuskulatur Charcot-Marie-Tooth-Krankheit Typ 1C Charcot-Marie-Tooth-Krankheit Typ 1F POMT2-assoziierte Gliedergürtelmuskeldystrophie R14 POMGNT1-assoziierte Gliedergürtelmuskeldystrophie R15 Defekt des mitochondrialen trifunktionalen Proteins Rippling-Muskel-Krankheit mit Myasthenia gravis KLHL9-abhängige distale Myopathie mit Beginn in der Kindheit Vorderhornerkrankung, autosomal-rezessive, des Kindes Anoctaminopathie, distale Distale Myopathie durch VCP-Genmutation mit Beginn im Erwachsenenalter Alpha-Dystroglycan-assoziierte Gliedergürtelmuskeldystrophie R16 Glykogenose durch Laktat-Dehydrogenase M-Untereinheit-Mangel Einschlusskörperchenmyopathie, hereditäre, Typ 4 Neuromuskuläre Krankheit Schwartz-Jampel-Syndrom Immunvermittelte nekrotisierende Myopathie Periodische Paralyse, genetisch bedingte Myositis-Overlap-Syndrom Polyglukosankörper-Krankheit, adulte Distale Nebulin-Myopathie Myopathie, distale, Typ Laing Refsum-Krankheit Rhabdomyosarkom Focal myositis Glycogen storage disease due to LAMP-2 deficiency POMT1-related limb-girdle muscular dystrophy R11 Amyotrophic lateral sclerosis Distal myopathy with posterior leg and anterior hand involvement Myotonic dystrophy Genetic skeletal muscle disease Acquired skeletal muscle disease Autosomal dominant distal myopathy Non-dystrophic myopathy Autosomal dominant Charcot-Marie-Tooth disease type 2N Congenital myopathy with reduced type 2 muscle fibers Muscular dystrophy-white matter spongiosis syndrome Autosomal dominant Charcot-Marie-Tooth disease type 2Z Poliomyelitis Ataxia neuropathy spectrum Primary lateral sclerosis Cylindrical spirals myopathy Bulbospinal muscular atrophy of adult Myopathy with hexagonally cross-linked tubular arrays Progressive muscular dystrophy Inclusion myopathy Autosomal dominant Charcot-Marie-Tooth disease type 2M Congenital muscular dystrophy-infantile cataract-hypogonadism syndrome TRIM32-related limb-girdle muscular dystrophy R8 Trichinellosis Autosomal recessive myogenic arthrogryposis multiplex congenita Spheroid body myopathy Cap myopathy Bulbospinal muscular atrophy Hereditary fibrosing poikiloderma-tendon contractures-myopathy-pulmonary fibrosis syndrome Immune-mediated acquired neuromuscular junction disease Walker-Warburg syndrome Mills syndrome Mitochondrial DNA depletion syndrome, myopathic form Inflammatory myopathy with abundant macrophages Postpoliomyelitis syndrome Autosomal dominant Charcot-Marie-Tooth disease type 2W Fetal akinesia-cerebral and retinal hemorrhage syndrome Spinocerebellar ataxia with epilepsy Early-onset myopathy-areflexia-respiratory distress-dysphagia syndrome Idiopathic eosinophilic myositis BVES-related limb-girdle muscular dystrophy Carnitine palmitoyl transferase II deficiency, severe infantile form Reducing body myopathy Rippling muscle disease Zebra body myopathy Rigid spine syndrome Moderate multiminicore disease with hand involvement Antenatal multiminicore disease with arthrogryposis multiplex congenita Childhood-onset progressive contractures-limb-girdle weakness-muscle dystrophy syndrome Recessive mitochondrial ataxia syndrome Congenital myopathy with cores Fingerprint body myopathy Glycogen storage disease due to phosphoglycerate mutase deficiency Lower motor neuron syndrome with late-adult onset Carnitine palmitoyl transferase II deficiency, neonatal form Fatal infantile hypertonic myofibrillar myopathy Congenital-onset Steinert myotonic dystrophy Functional variant of Guillain-Barré syndrome Regional variant of Guillain-Barré syndrome Variant of Guillain-Barré syndrome Classic multiminicore myopathy Intellectual disability-myopathy-short stature-endocrine defect syndrome Myosin storage myopathy Corpus callosum agenesis-neuronopathy syndrome Fungal myositis Glycogen storage disease due to glycogen branching enzyme deficiency, childhood combined hepatic and myopathic form Proximal spinal muscular atrophy type 3 Charcot-Marie-Tooth disease type 2P Infant botulism Glycogen storage disease due to liver and muscle phosphorylase kinase deficiency Glycogen storage disease due to glycogen branching enzyme deficiency, fatal perinatal neuromuscular form Infantile myofibromatosis Charcot-Marie-Tooth disease type 1E Autosomal dominant spastic paraplegia type 17 Juvenile primary lateral sclerosis Finnish upper limb-onset distal myopathy Autosomal recessive distal myopathy Generalized bulbospinal muscular atrophy Sensory ataxic neuropathy-dysarthria-ophthalmoparesis syndrome Hereditary continuous muscle fiber activity Carnitine palmitoyl transferase II deficiency, myopathic form LIMS2-related myopathy Autosomal dominant distal axonal motor neuropathy-myofibrillar myopathy syndrome Qazi-Markouizos syndrome Myopathic Ehlers-Danlos syndrome Congenital muscular dystrophy Benign Samaritan congenital myopathy Congenital fiber-type disproportion myopathy