He is credited with key descriptions in the field of cardiomyopathies with desmin overload, severe autosomal recessive myopathies in children with adhaline deficiency (gamma - sarcoglycan), congenital muscular dystrophies of toddlers with merosin deficiency, and limb-girdle muscular dystrophies in juveniles, rediscovered in a genetic isolate from Reunion Island, with Calpain 3 deficiency, dystrophies subsequently found throughout the world.