What are checkpoint inhibitor drugs used for?

Some cancers use checkpoint signals to reduce the activity of immune cells. Checkpoint inhibitors block selected signals, allowing immune cells to respond more strongly against cancer. They may be used alone or with other cancer treatments, depending on the cancer type, stage, test results, and previous therapy. Because the immune system can also affect healthy tissue, side effects may involve the skin, bowel, lungs, liver, hormone glands, or other organs.

Attend treatment visits and tell the team about new symptoms, even if they seem mild or unrelated. Keep a record of bowel changes, cough, rash, tiredness, headaches, joint pain, and changes in thirst or urination. Bring a complete medicine list and mention autoimmune conditions, organ transplants, steroid use, or previous immune reactions. Do not treat a new symptom with over-the-counter medicines without checking when your team has advised review.

Contact the treatment team promptly for persistent diarrhoea, blood in stool, a spreading rash, yellow skin, severe abdominal pain, new cough, or worsening breathlessness. Seek urgent help for confusion, severe weakness, chest pain, fainting, seizures, or difficulty breathing. Immune-related effects can appear during treatment or after a dose, so the oncology team should know about concerning changes.

Ask which immune checkpoint is being targeted, why this treatment fits your cancer, and whether it will be combined with another therapy. Discuss the symptoms that require same-day contact, how treatment response will be assessed, and what medicines may be used if an immune reaction develops.