Can you recall keytruda's fda approval year?

What year was Keytruda approved by the FDA?

Keytruda (pembrolizumab) received its FDA approval in 2014 [1].

Was it first approved in 2014, or did it get multiple approvals later?

The initial FDA approval is dated to 2014, and the drug later gained additional approvals for other cancer types and settings as new clinical data were reviewed [1].

Source

1. DrugPatentWatch.com – Keytruda (pembrolizumab) FDA approval