What are the possible side effects of sunitinib?

Sunitinib, as an oral small molecule targeted drug, has significant efficacy in anti-tumor treatment. However, like other targeted therapy drugs, while blocking tumor cell signal transduction, it may also affect normal tissues, causing a series of side effects. Understanding these potential adverse reactions will not only help patients detect problems early, but also help doctors control and adjust risks during treatment.

One of the common side effects is digestive system reactions, including loss of appetite, nausea, vomiting, diarrhea or constipation. These symptoms usually appear in the early stages of medication, and some patients can gradually alleviate them through dietary adjustments and symptomatic treatment. Secondly, skin toxicity is also common, such as hand-foot syndrome (shown as redness, swelling, pain, and peeling of the palms and soles), rashes, pigmentation, etc., which sometimes even affect daily life and mobility.

Fatigue is one of the most common systemic symptoms during sunitinib use. Many patients report decreased physical strength and easy fatigue. In severe cases, it may even affect normal work and life. In addition, this drug may also affect the blood system, causing mild to moderate anemia, neutropenia, or thrombocytopenia. Blood routine should be checked regularly to ensure safety.

Cardiovascular side effects cannot be ignored. Some patients develop hypertension, arrhythmia and even decreased cardiac function while using sunitinib. Therefore, blood pressure needs to be monitored and cardiac function evaluated. Especially patients with underlying cardiovascular diseases should be closely observed.

Endocrine effects are also a clinical concern, especially thyroid dysfunction, including hypothyroidism or hyperthyroidism. When some patients experience symptoms such as fatigue, chills, and weight changes during long-term medication, they should undergo thyroid function tests in a timely manner. Liver function damage is also one of the possible adverse reactions caused by sunitinib, manifested as increased transaminases, jaundice, nausea, etc. In severe cases, the drug may need to be suspended or discontinued.

Reference materials:https://www.sutent.com/