Allergies, Author Interviews, Cancer Research, Immunotherapy / 07.06.2019
Some Patients Can Be Rechallenged After Immune Adverse Events from Checkpoint Inhibitors
MedicalResearch.com Interview with:
Prof. Olivier Lambotte, MD, PHD
Professor of Internal Medicine
Paris XI University Medical School
Research Director
Control of Chronic Viral Infections Department
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Immune checkpoint inhibitors (ICIs) anti-programmed death-1 (PD-1) or anti-programmed death ligand-1 (PD-L1) have proven efficacy in the treatment of many cancers but patients may experience immune-related adverse events (irAEs). Immune checkpoint inhibitors is usually stopped when grade 2 or higher irAE occur. Data are very limited on the safety of resuming treatment after such an event.
We studied all adult patients referred to the ImmunoTOX toxicity review board at the Gustave Roussy cancer center (Villejuif, France) in 2015-2017 with irAE grade 2 or higher for whom the rechallenge was questioned. Among 93 patients with a broad spectrum of cancers, 40 patients (43%) were rechallenged with the same anti-PD-1 or anti-PD-L1. The rechallenged and non-rechallenged groups did not differ in terms of age, time to initial irAE, irAE severity, or steroid use. With a median follow-up period of 14 months, the same irAE or a different irAE occurred in 22 patients (55%). The second irAEs were not more severe than the first. Earlier initial toxicity was associated with more frequent irAE recurrence.
Prof. Olivier Lambotte, MD, PHD
Professor of Internal Medicine
Paris XI University Medical School
Research Director
Control of Chronic Viral Infections Department
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Immune checkpoint inhibitors (ICIs) anti-programmed death-1 (PD-1) or anti-programmed death ligand-1 (PD-L1) have proven efficacy in the treatment of many cancers but patients may experience immune-related adverse events (irAEs). Immune checkpoint inhibitors is usually stopped when grade 2 or higher irAE occur. Data are very limited on the safety of resuming treatment after such an event.
We studied all adult patients referred to the ImmunoTOX toxicity review board at the Gustave Roussy cancer center (Villejuif, France) in 2015-2017 with irAE grade 2 or higher for whom the rechallenge was questioned. Among 93 patients with a broad spectrum of cancers, 40 patients (43%) were rechallenged with the same anti-PD-1 or anti-PD-L1. The rechallenged and non-rechallenged groups did not differ in terms of age, time to initial irAE, irAE severity, or steroid use. With a median follow-up period of 14 months, the same irAE or a different irAE occurred in 22 patients (55%). The second irAEs were not more severe than the first. Earlier initial toxicity was associated with more frequent irAE recurrence.
Dr. Essig[/caption]
Dr. Garth Essig, MD
Otolaryngologist
The Ohio State University Wexner Medical Center.
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Dog bites are a significant yet modifiable public health concern, but the true magnitude is difficult to estimate with such wide ranges in reporting, severity of injury and varieties of breeds that bite. We reviewed bites from reports in the literature and from two regionally distinct medical centers.
We concluded that bite frequency and severity could be attributed to certain breeds in this sample, if the breed is known. Our study also acknowledged the significant risk of biting with the mixed breed population, which creates a dilemma with identification.


