These drugs are genetically engineered to work on the immune system. They include adalimumab (Humira); adalimumab-atto (Amjevita), a biosimilar to Humira; anakinra (Kineret); etanercept (Enbrel); etanercept-szzs (Ereizi), a biosimilar to Enbrel; infliximab (Remicade); and infliximab-dyyb (Inflectra), a biosimilar to Remicade.