Also, a novel leucine-rich protein named myomasp ([myosin-interacting, M-band-associated stress-responsive protein]/LRRC39) has been detected as an interactor of myosin heavy chain (MYH7), and knockdown of the myomasp/LRRC39 ortholog in zebrafish resulted in severely impaired heart function and cardiomyopathy in vivo (Will et al., 2010). The gene discussed is LRRC39; the disease is cardiomyopathy.