| Phenotype details |
see paper; ..., reduced intrauterine fetal movements; 1y-muscular weakness, hypotonia trunk/proximal extremities; 14m-walk; broad-based waddling gait, climb stairs first only by crawling, later with great effort holding railing; not able to stand and jump on one leg, nor walk on heels, bipedal jumping only with minimal space gained between feet and floor, elevated CK (3700 U/L); 10y-wheelchair-bound |