AUTHOR=Lai Yu Ying , Horta Rodrigo dos Santos , Almendros Angel , Ha Patrick W. Y. , Giuliano Antonio TITLE=L-LOP/LOPP for the treatment of canine gastrointestinal/hepatosplenic lymphoma JOURNAL=Frontiers in Veterinary Science VOLUME=11 YEAR=2024 URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2024.1373180 DOI=10.3389/fvets.2024.1373180 ISSN=2297-1769 ABSTRACT=

Canine gastrointestinal (GI) and hepatosplenic (HS) high-grade (large cell) lymphomas are uncommon forms of canine lymphomas, with a very poor response to chemotherapy and a very poor prognosis. Currently, there are no established effective chemotherapy protocols for canine GI/HS lymphomas. This case series aimed to retrospectively evaluate the efficacy of lomustine-based protocols L-LOP (L-asparaginase, lomustine, vincristine, and prednisolone) and L-LOPP (with the addition of procarbazine) for treatment of canine GI/HS lymphomas. Medical records of dogs with cytologically or histologically diagnosed lymphoma at CityU Veterinary Medical Centre from 2019 to 2022 were retrospectively reviewed. The L-LOP/LOPP treatment protocol was well tolerated with rare severe adverse events. Median progression-free survival for GI and HS lymphoma was 56 days (range, 10–274 days) and 57 days (range 8–135 days) respectively; while median survival time for GI and HS lymphoma was 93 days (range 10–325 days) and 210 days (range 8–240 days) respectively.