Is Keytruda the same thing as chemotherapy?
No. Keytruda (pembrolizumab) is not chemotherapy. It is an immune checkpoint inhibitor, which works by helping the immune system recognize and attack cancer cells, rather than directly killing rapidly dividing cells the way traditional chemotherapy does.
What is Keytruda, then?
Keytruda is an immunotherapy (specifically, an anti–PD-1 therapy). It is designed to block the PD-1 pathway, which can increase T-cell activity against tumors.
Why do people sometimes group Keytruda with chemo?
People often mix terms like “cancer treatment” or “systemic therapy.” Keytruda is given through infusion like many anticancer drugs, so it can end up discussed alongside chemotherapy—even though its mechanism is different.
Can Keytruda be used with chemotherapy?
Yes. Keytruda is sometimes given together with chemotherapy in certain cancers and regimens. In those combinations, chemotherapy is still chemotherapy, and Keytruda remains immunotherapy.
What’s the practical difference for patients?
Because Keytruda is immunotherapy, its side effects can be different from chemotherapy. Instead of classic chemo toxicities (like low blood counts from bone marrow suppression), patients can also experience immune-related side effects (for example, inflammation in organs), depending on the treatment.
Is Keytruda ever described as “chemo” in labeling or studies?
Sometimes in everyday conversation people use “chemo” as shorthand for any cancer drug or infusion. Medically and in clinical trial terminology, Keytruda is classified as immunotherapy/anti–PD-1, not chemotherapy.
Sources
No sources were provided with the question, and I can’t verify Keytruda classification from external sources here. If you want, share the label text or the specific article you’re looking at, and I can interpret it.