What should you know about molecular targeted drug?

Cancer cells can carry changes or make proteins that help them grow, divide, repair damage, or send signals. A targeted drug is designed to interfere with one of those features. Some medicines block a signal; others affect a protein, prevent new blood-vessel signalling, or help the immune system recognise abnormal cells.

Testing may use tumour tissue, blood, or another sample, depending on the cancer and the medicine being considered. A target can be present without making a drug suitable, and a result can change as the disease is assessed. The oncology team weighs the report against symptoms, scans, previous treatment, and other health conditions.

Confirm the name, purpose, route, and schedule of the drug. Tell the team about all prescriptions, supplements, allergies, liver or kidney problems, and any planned procedure. Some targeted drugs are tablets and others are given through a vein. Take tablets exactly as directed and do not double a missed dose unless the team tells you to.

Call the oncology team promptly for a fever, severe rash, swelling of the face or throat, breathing trouble, chest pain, unusual bleeding, intense diarrhoea, yellowing of the skin, or a marked change in urine. Ask which symptoms require emergency help because the warning signs depend on the medicine used.

Which molecular target is being treated? What test found it? How should I manage a missed dose? Which medicines or foods may interact with it? How will response and side effects be monitored?