Answer
Oct 29, 2026 - 09:53 AM
No, TUKYSA (tucatinib) is not a traditional chemotherapy drug. It is a type of targeted cancer therapy called a tyrosine kinase inhibitor (TKI).
Unlike traditional chemotherapy, which affects rapidly dividing cells throughout the body, TUKYSA specifically targets a protein called HER2 (human epidermal growth factor receptor 2), which helps certain cancer cells grow and multiply.
How does TUKYSA work?
TUKYSA blocks HER2 signaling inside cancer cells, helping slow or stop cancer growth. It is used to treat certain types of HER2-positive breast cancer and colorectal cancer.
Is TUKYSA used with chemotherapy?
Yes, TUKYSA may be prescribed alongside other cancer treatments, including:
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Capecitabine (Xeloda): An oral chemotherapy medication.
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Trastuzumab (Herceptin): A HER2-targeted antibody therapy.
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Pertuzumab (Perjeta): Another HER2-targeted antibody therapy used in certain breast cancer treatment regimens.
The combination depends on the type of cancer and treatment history.
Does TUKYSA have chemotherapy-like side effects?
Although TUKYSA is not traditional chemotherapy, it can cause side effects such as diarrhea, nausea, fatigue, decreased appetite, and liver problems. Some side effects may be more severe when it is combined with chemotherapy.
In summary: TUKYSA is a targeted therapy, not traditional chemotherapy, but it can be used alongside chemotherapy to help treat HER2-positive cancers.
