Sentence 1: Rituximab has approved , and in April 2011 been investigated by the FDA , when used in combination with glucocorticoids in adult patients .
Sentence 2: Rituximab was investigated and approved by the FDA in April 2011 , when used in combination with glucocorticoids in adult patients .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?