Table 2.
Warmblood | Arabian | |||
---|---|---|---|---|
Control | PSSM2/MFM | Control | PSSM2/MFM | |
N | 54 | 68 | 30 | 30 |
Age (y) Range |
8.6 ± 4.3 2‐24 |
9.7 ± 4.6 3‐28 |
12.4 ± 5.9 4‐23 |
13.9 ± 5.7 4‐29 |
Sex | 20 f, 33 mc, 1 s | 23 f, 42 mc, 2 s, 1 un | 22 f, 8 mc | 18 f, 12 mc |
GYS1 mutation | neg | neg | nd | 13 neg, 17 nd |
Muscle biopsied | 29 glut, 34 sm | 18 glut 50 sm | 30 glut | 17 glut, 13 sm |
Horses with PAS aggregates | 0 | 55 | 0 | 18 |
Horses with desmin aggregates | 0 | 37 | 0 | 30 |
Abbreviations: AR, Arabian; f, female; Glut, gluteus medius; GYS1, glycogen synthase 1; mc, male castrate; MFM, Myofibrillar Myopath; nd, not done; neg, negative; PAS, periodic acid‐Schiff's; PSSM2, Polysaccharide storage myopathy type 2; s, stallion; Sm, semimembranosus; un, unknown; WB, Warmblood.