Heidar J Albandar1, Jacob Fuqua2, Jasim M Albandar3, Salahuddin Safi1, Samuel A Merrill1, Patrick C Ma4. 1. West Virginia University Cancer Institute, Morgantown, WV 26506, USA. 2. Department of Medicine, West Virginia University, Morgantown, WV 26506, USA. 3. Department of Periodontology and Oral Implantology, Temple University School of Dentistry, Philadelphia, PA 19140, USA. 4. Penn State Cancer Institute, Penn State College of Medicine, Penn State Health Milton S. Hershey Medical Center, Pennsylvania State University, Hershey, PA 17033, USA.
Abstract
INTRODUCTION: There is growing recognition of immune related adverse events (irAEs) from immune checkpoint therapies being correlated with treatment outcomes in certain malignancies. There are currently limited data or consensus to guide management of irAEs with regards to treatment rechallenge. METHODS: We conducted a retrospective analysis with an IRB-approved protocol of adult patients seen at the WVU Cancer Institute between 2011-2019 with a histopathologic diagnosis of active cancers and were treated with immune checkpoint inhibitors (ICI) therapy. RESULTS: Demographics were similar between the ICI interrupted irAE groups within cancer types. Overall, out of 548 patients who received ICI reviewed, there were 133 cases of ≥1 irAE found of any grade. Being treated with anti-CTLA-4 inhibitor ICI was associated with lower risk of death compared to anti-PD-1 ICI. The overall survival difference observed for irAE positive patients, between rechallenged (37.8 months, reinitiated with/without interruption; 38.6 months, reinitiated after interruption) and interrupted/non-reinitiated (i.e., discontinued) groups (24.9 months) was not statistically significant, with a numerical trend favoring the former. CONCLUSIONS: Our exploratory study did not identify significantly different survival outcomes among the Appalachian West Virginia adult cancer patients treated with ICI who developed irAE and had treatment reinitiated after interruption, when compared with those not reinitiated.
INTRODUCTION: There is growing recognition of immune related adverse events (irAEs) from immune checkpoint therapies being correlated with treatment outcomes in certain malignancies. There are currently limited data or consensus to guide management of irAEs with regards to treatment rechallenge. METHODS: We conducted a retrospective analysis with an IRB-approved protocol of adult patients seen at the WVU Cancer Institute between 2011-2019 with a histopathologic diagnosis of active cancers and were treated with immune checkpoint inhibitors (ICI) therapy. RESULTS: Demographics were similar between the ICI interrupted irAE groups within cancer types. Overall, out of 548 patients who received ICI reviewed, there were 133 cases of ≥1 irAE found of any grade. Being treated with anti-CTLA-4 inhibitor ICI was associated with lower risk of death compared to anti-PD-1 ICI. The overall survival difference observed for irAE positive patients, between rechallenged (37.8 months, reinitiated with/without interruption; 38.6 months, reinitiated after interruption) and interrupted/non-reinitiated (i.e., discontinued) groups (24.9 months) was not statistically significant, with a numerical trend favoring the former. CONCLUSIONS: Our exploratory study did not identify significantly different survival outcomes among the Appalachian West Virginia adult cancerpatients treated with ICI who developed irAE and had treatment reinitiated after interruption, when compared with those not reinitiated.
Entities:
Keywords:
checkpoint inhibitor; immune related adverse event; rechallenge of immunotherapy
Authors: Matthew F Covington; Bhasker R Koppula; Gabriel C Fine; Ahmed Ebada Salem; Richard H Wiggins; John M Hoffman; Kathryn A Morton Journal: Cancers (Basel) Date: 2022-05-29 Impact factor: 6.575