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Regression of Metastatic Clear Cell Kidney Cancer With Interleukin-2 Treatment Following Nivolumab (Anti-PD-1) Treatment

Brayer, Jason*; Fishman, Mayer*,†

doi: 10.1097/CJI.0000000000000024
Clinical Studies
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Aldesleukin [interleukin-2 (IL-2)] induces durable complete responses in some kidney cancer and melanoma patients. Nivolumab is an investigational antibody drug targeting programmed death-1 (PD-1) as a treatment, demonstrating activity in multiple cancer types. An expanding complement of immunotherapeutics raises important issues regarding the best way to use them. There are issues beyond identifying an agent that provides the superior front-line response: when does one therapy potentiate another immune therapy? When is the capacity of immune response exhausted and an approach without immune mechanism the better therapy? In this case report, we present a patient with metastatic renal cell carcinoma with no tumor regression evident on a PD-1 blockade (given on an investigational trial), who then achieved near-complete response to bolus high-dose IL-2 therapy, maintaining a persistent response off therapy. This case emphasizes on the need to develop improved predictors of response to immune therapies, especially as they can be applied to optimize sequential immunotherapeutic modalities versus predict when to turn to alternative targeted agents in renal cell carcinoma, and is an example of efficacious IL-2 application as a second-line treatment.

*Medical Oncology & Hematology Fellowship Training Program, University of South Florida

Department of Genitourinary Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL

Reprints: Mayer Fishman, Department of Genitourinary Oncology, H. Lee Moffitt Cancer Center & Research Institute, Mailstop-GU PROG, 12902 Magnolia Drive, Tampa, FL 33612. (e-mail: mayer.fishman@moffitt.org).

Received October 31, 2013

Accepted January 7, 2014

© 2014 by Lippincott Williams & Wilkins