When is targeted therapy recommended for lung cancer?

Lung cancers can have different molecular features, even when they start in the same part of the lung. A biopsy or another tumour sample may be tested for changes that guide treatment. The team also considers the cancer type, scan findings, previous treatment, breathing reserve, and other health conditions. A targeted medicine may be used alone or in sequence with other treatment, particularly when the identified change gives the medicine a clear treatment role. The cancer can adapt, so scans and review help decide whether the plan should continue or change.

Ask whether your tumour has been tested for actionable changes and request an explanation of the result in plain language. Check whether the medicine is a tablet, infusion, or part of a combined plan. Discuss interactions, contraception or pregnancy considerations where relevant, and how side effects will be handled. Keep appointments for scans and blood tests. See [Lung Cancer](/conditions/lung-cancer/) and [Targeted Therapy](/treatments/systemic-therapy/targeted-therapy/) for related information.

Contact your treatment team promptly for new or worsening breathlessness, persistent cough, fever, chest pain, severe diarrhoea, a widespread rash, or swelling. Seek urgent help for sudden severe breathing difficulty, blue lips, confusion, or fainting. Report symptoms early because some treatment effects need assessment before the next dose.

Which tumour change was found? What treatment goal does this medicine have? How will scans show whether it is working? Which side effects should be reported immediately?