Review of OEPA/COPDAC regimen in pediatric Hodgkin lymphoma; institutional experience from a low middle-income country.

Pediatric Hodgkin lymphoma (HL) treatment has increasingly shifted toward response-adapted protocols, aiming to minimize radiotherapy and employ intensive chemotherapy such as OEPA/COPDAC. We retrospectively reviewed treatment outcomes and toxicities in pediatric HL patients treated with OEPA/COPDAC between 2015 and 2019 at a tertiary care center in Pakistan, a resource limited country, following the Euronet PHL-C1 protocol with radiotherapy reserved for inadequate interim responses. Clinical features, treatment-related toxicities, and hospital admissions were documented. The cohort included 20 patients with a median age of 12 years; 13 (65%) achieved complete remission after OEPA induction and avoided radiotherapy. Toxicities were frequent-15 (75%) after OEPA-1 and 13 (68%) after OEPA-2-most commonly gastrointestinal symptoms and febrile neutropenia. Hospitalization was required in 9 (45%) after the first cycle and 11 (58%) after the second, with one treatment-related death from febrile neutropenia. At median follow-up, overall survival was 95% (95% CI: 69.47-99.28%) and event-free survival was 85% (95% CI: 60.38-94.90%). These findings highlight that OEPA/COPDAC achieves high survival rates even in advanced-stage pediatric HL within low-resource settings. However, the substantial toxicity burden and frequent hospitalizations underscore the need for enhanced supportive care and further evaluation in larger, long-term studies.