A<unk>  is a pharmaceutical that uses a "new and unique mechanism of action" to treat a particular medical condition. While the Food and Drug Administration's Center for Drug Evaluation and Research tracks<unk> s and reports on them annually,<unk> -in-class is not considered a regulatory category. Although many<unk> s qualify as breakthrough therapies, Regenerative Medicine Advanced Therapies and/or orphan drugs,<unk> -in-class status itself has no regulatory effect.
First-in-class medication
Drug of last resort
Prototype drug
Medieval medicine of Western Europe
Generic drug
Designer drug
Small modular immunopharmaceutical
Byzantine medicine