RecruitingObservation Study in Patients Age 0-5 Years With LAMA2-related Congenital Muscular DystrophyThe goal of this observational study is to understand how young children with LAMA2-related dystrophy move and change over time. We will also learn about how this condition impacts other body systems. Participants will undergo: * Neuromuscular assessments * Blood collections * Swallowing and breathing assessments * Questionnaires