Arjun V. Balar, MD

Articles by Arjun V. Balar, MD

MRD Assay Is New Step in Urothelial Cancer Testing

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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.

Implications of the Gut Microbiome for Cancer Immunotherapy

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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.

Faced With BCG Shortages, Oncologists Move to Rationing of Care

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Even as supplies of bacillus Calmette-Guérin, a standard of care for many patients with non–muscle invasive bladder cancer, continue to dwindle, oncologists have undertaken some desperate measures to continue the care they have been providing to their patients.

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.

The recent approval of erdafitinib has significant implications for the field, says Arjun V. Balar, MD. It marks the most recent in a string of FDA approvals in urothelial carcinoma after nearly 3 decades of little to no advancement but is, importantly, the first targeted therapy in UC, which should open the door for more biomarker-driven drug discovery.

When Practice Changing Isn't Changing Practice

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Arjun V. Balar, MD, Editor-in-Chief of Targeted Therapies in Oncology, discusses the plenary session at. the 2018 ASCO Annual Meeting. Findings from the CARMENA trial in metastatic clear cell renal cell carcinoma were presented.

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.

On May 18, 2018, the FDA released a safety alert concerning decreased survival observed in 2 separate ongoing first-line randomized clinical trials of checkpoint inhibitors in metastatic urothelial cancer for patients treated in the monotherapy arms with low PD-L1 expression compared with patients who received cisplatin- or carboplatin-based chemotherapy.

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.

Immunotherapies and Combinations in Advanced Urothelial Cancer

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For decades and even to this day, the foundation of metastatic bladder cancer therapy has been cytotoxic chemotherapy. In fact, until recently, the most significant breakthrough in treatment was in the 1980s, when cisplatin-based therapies, specifically MVAC, became the new standard of care.

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