A Study of Risdiplam in Participants With Type I and Type II Spinal Muscle Atrophy (SMA)

Inclusion Criteria: * Maximum age to be 6 months for type I participants and 5 years for type II participants at the time of diagnosis. * Participants must start/have started treatment with Risdiplam within 6 months of diagnosis. * Participant to be receiving adequate nutrition and hydration at index date, in the opinion of the Investigator. * Participant to be adequately recovered from any acute illness at the time index date. Exclusion Criteria: * Participants not receiving treatment for disease with Risdiplam according to standard of care and in line with the current summary of product characteristics (SPC)/local labeling. * Participants not receiving the Roche studied medicinal product, but a biosimilar. * Concomitant or previous administration in any investigational drug or device study. * Concomitant or previous administration of approved treatment for SMA other than Risdiplam. * Unstable gastrointestinal, renal, hepatic, endocrine or cardiovascular system diseases at index date. * Participants requiring invasive ventilation or tracheostomy at index date. * Participants requiring awake non-invasive ventilation due to respiratory insufficiency or with awake hypoxemia with or without ventilator support or with history of respiratory failure or severe pneumonia, and have not fully recovered their pulmonary function at the time of index date. * Severe contractures of joints of lower limbs and upper limbs at the time of index date.