The purpose of this study is to learn how much DHA to give to mothers in order to provide
enough to the baby. Researchers will also learn if there are differences in development of
the baby up to 12 months after birth.
The primary objective of this study is to demonstrate a pharmacodynamic effect of CK-2127107
on measures of skeletal muscle function or fatigability in patients with Spinal Muscular
Atrophy Types II-IV.