Managing Toxicities of TKIs and HIF-2 inhibitor in Renal Cell Carcinoma (RCC)

August 7, 2025
Tox Check 2025
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Key Points

Understanding TKIs and HIF-2 Inhibitors
Dosing Strategies: Insights on starting doses, titration, and the importance of managing side effects without compromising quality of life.
Common Side Effects: hypertension, diarrhea, fatigue, and how they relate to the class effect of these medications.
Clinical pearls, with regards to managing toxicities, including the use of treatment breaks and supportive care strategies.
Second-Line Treatments: A look at tivozanib and belzutifan, including their unique side effects and management strategies.
Dr. Sumanta Kumar Pal
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In this episode of the Oncology Brothers podcast, we dived into the management of side effects associated with tyrosine kinase inhibitors (TKIs) and HIF-2 alpha inhibitors used in treatment of renal cell carcinoma (RCC). Joined by the esteemed Dr. Monty Pal from the City of Hope, we explored the various agents available, including frontline options like cabozantinib, lenvatinib, and axitinib, as well as second-line treatments such as tivozanib and belzutifan.

We discussed the importance of starting doses and the challenges of dose titration, emphasized that side effects like hypertension, diarrhea, and hand-foot syndrome are often dose-dependent. Dr. Pal shared valuable clinical pearls on managing these common toxicities, highlighting the need for open communication with patients about their experiences and the potential need for dose adjustments.

We also touched on the overlapping side effects of TKIs and immunotherapy, particularly in cases of diarrhea. We acknowledged the historical context of older TKIs like sunitinib and pazopanib, while also recognizing the evolving landscape of treatment options.

As we wrapped up, we reiterated the significance of maintaining quality of life for our patients, especially in palliative settings.

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