Key Inclusion Criteria:  Completed study drug treatment in parent study (VX19-445-117 [NCT04599465] or VX20-445-126 [NCT04969224]), or had study drug interruption(s) in parent study but completed study visits up to the last scheduled visit of the treatment period in the parent study  Key Exclusion Criteria:  History of drug intolerance in a parent study  Other protocol defined Inclusion/Exclusion criteria may apply.