<prompt> Answer this question truthfullyWhat is the target of evolocumab and alirocumab, and what class of drugs do they belong to?  <response>: <reason> What is the target of evolocumab and alirocumab, and what class of drugs do they belong to? Evolocumab and alirocumab are lipid-lowering agents that inhibit PCSK9. They belong to the class of drugs known as PCSK9 inhibitors. 