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Clinical features: General Laboratory features: General Pathology Hereditary Types α-Actin: 1q42 α-tropomyosin 3 (TPM3): 1q21 β-tropomyosin (TPM2): 9p13 Cofilin-2 (CFL2): 14q12 Nebulin: 2q21 Ryanodine receptor (Rods + Cores): 19q13 Troponin T1: 19q13 Myopathy + Slow movements & cores: 15q21 Rod myopathy, mild Sporadic disorders with rods Infant onset myopathy Adult onset myopathy HIV rod myopathy Target fibers (Acute Denervation) |
Rod myopathy: Distal weakness & contractures From A Connolly |
Types Dominant Dynamin 2: 19p13 MYF6: 12q21 Recessive BIN1: 2q14 X-linked: Myotubularin; Xq27 Carriers Pathology |
CONGENITAL MUSCULAR DYSTROPHIES Adducted thumbs & Ophthalmoplegia Cerebellar atrophy CMD: 4p16 CNS atrophy & absent large myelinated PN axons Desmin inclusions Fukuyama: Fukutin; 9q31 Integrin α-7: 12q13 Junctional Epidermolysis Bullosa: 8q24 Marinesco-Sjögren: SIL1; 5q31 Merosin (laminin α2-chain) Deficient (MDC1A): 6q22 Normal: "Pure" form Mitochondrial structural changes Muscle-Eye-Brain Disorders Santavuori (Finnish): POMGnT1; 1p32 Walker-Warburg: POMT1; 9q34 Muscle hypertrophy Mental retardation Respiratory failure (MDC1B): 1q42 Normal CNS (MDC1C): FKRP; 19q13 Severe retardation (MDC1D): LARGE; 22q12 Epidermolysis bullosa: Plectin; 8q24 Rigid spine with CMD: SEPN1; 1p35 Ullrich COL6A1; 21q22 COL6A2; 21q22 COL6A3; 2q37 General features |
from A Kornberg MD |
Pectoral folds (Arrow) with severe shoulder weakness |
CMD: Normal merosin |
Fukuyama Muscle-eye-brain disease (Santavuori) Walker-Warburg |
From D Cummings MD |
Congenital MD + Rigid Spine |
Extraocular muscles Axenfeld-Rieger Blepharophimosis Congenital fibrosis CFEOM1: KIF21A; 12p11 CFEOM2: PHOX2A; 11q13 CFEOM3: 16q24 CFEOM + Ulnar hand Δ: 21qter Duane's syndrome DURS1: 8q13 DURS2: CHN1; 2q31 DURRS: SALL4; 20q13 BSAS: HOXA1; 7p15 Navajo: HOXA1; 7p15 Möbius syndrome Ptosis + Scoliosis: ROBO3; 11q23 |
Face Cardiofacial syndrome Depressor anguli oris Mastication Hands Finger extensors Holt-Oram Palmaris longis Thenar eminence Legs Peroneus tertius Psoas (CHILD) Trunk Abdominal Brachial plexus Diaphragm Pectoral Poland syndrome Prune belly Trapezius |
Click image for movie |
Duane syndrome |
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Duane-like phenomenon in patient diagnosed as chronic ocular myasthenia gravis.
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From: P Bailey |
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Dextrocardia |
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Poland Syndrome |
Multicores |
Differential diagnosis General α-Actin: 1q42; Dominant SEPN1: 1p35-p36; Recessive CFTD2: Xq13; Recessive TPM3: 1q21 Pathology |