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FOR PATIENTS · SOURCE READING

Side effects of targeted therapy

Source: Targeted Therapy for Breast Cancer, National Cancer Institute.

Source updated: Not stated in this source · Captured 2026-09-09.

Selected source text with whitespace normalised. This Triangle page is not an NCI PDQ summary. Independent clinical review is pending.

NCI patient treatment article for this disease Exact source article; not a clinically reviewed indication or current-standard recommendation.

Context: Targeted Therapy for Breast Cancer

Side effects of targeted therapy

The most common side effects of targeted therapy are diarrhea and liver problems. Other side effects may include mouth sores and hair and nail changes. Learn more about the side effects of cancer treatment and steps you can take to manage or prevent them.

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Preserved source evidence · Independent clinical review pending · Not medical advice