Arjun V. Balar, MD

Articles by Arjun V. Balar, MD

A post hoc analysis from the IMvigor010 study evaluating circulating tumor ctDNA in patients receiving adjuvant atezolizumab in high-risk muscle-invasive urothelial cancer after surgery was presented at the European Society of Medical Oncology Immuno-Oncology Virtual Congress in 2020.

Building upon the initial successes of anti–PD-1 and anti–CTLA-4 therapies has been a major focus of drug development over the past several years—basically, in search of other agents that could generate “immune-synergy.” What the term means and implies is critically important: It refers to drugs that work better together than alone (or in sequence) through their individual mechanisms of action to enhance the host immune-response to cancer.

The results of multiple studies suggest that bacteria may influence both cancer growth and the immune system, with certain species linked to improved immune surveillance of cancer. Some bacteria interact with the host’s immune system through paracrine factors to shape the immune system’s response to cancer.

PET imaging modalities such as fluciclovine PET, choline PET, and more recently PSMA-PET are more sensitive in the detection of both soft tissue and bone metastases. These newer modalities have the potential to better identify patients who are eligible for targeted treatment of oligometastases with radiation or treatments more appropriate for immediate systemic androgen deprivation, according to Arjun V. Balar, MD.

Urothelial cancer is a disease of older individuals, with a median age of 70, and comprises a population burdened with significant medical comorbidities. For those ineligible for cisplatin, the outcomes are undeniably poor, even with carboplatin. The advent of immunotherapy provided a very-well-tolerated option that could lead to durable remissions and, most importantly, expanded the treatable population with this disease.

Editori-in-Chief of <em>Targeted Therapies in Oncology </em>discusses the importance of KEYNOTE-189 which investigated whether the best frontline treatment for any patient is chemotherapy, immunotherapy, or a combination of the 2. Data from the IMpower150 and CheckMate 227 also investigate this question in various patient populations.

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