What was keytruda's initial fda approved cancer?

What cancer was Keytruda first approved to treat by the FDA?

Keytruda (pembrolizumab) received its first FDA approval in 2014 for the treatment of unresectable or metastatic melanoma.

Was the initial approval limited to a specific patient group?

Yes. The initial FDA approval covered unresectable or metastatic melanoma in patients who had disease progression after ipilimumab (Yervoy) and, if available, after a BRAF inhibitor for those with a BRAF V600 mutation. [1]

When did the first approval happen?

The FDA’s first approval of Keytruda for melanoma came in 2014. [1]

Sources
[1] https://www.drugs.com/new-drug-approval-list.html