Golidocitinib Combined With P-GemOx Plus PD-1 Inhibitor Versus P-GemOx Plus PD-1 Inhibitor in First-Line Newly Diagnosed Advanced or Non-Nasal Extranodal NK/T-Cell Lymphoma

This is a multicenter, randomized, Phase 2 clinical trial designed to evaluate the efficacy and safety of golidocitinib combined with the P-GemOx (pegaspargase + gemcitabine + oxaliplatin) regimen plus PD-1 inhibitor, compared with P-GemOx plus PD-1 inhibitor alone, in participants with first-line newly diagnosed advanced (Stage III-IV) or non-nasal extranodal natural killer/T-cell lymphoma (ENKTL). Eligible participants will be randomly assigned 1:1 to two groups:

Experimental group: Golidocitinib (150 mg orally once daily, Days 1-21 per 21-day cycle) + P-GemOx (pegaspargase 2000 U/m² on Day 2; gemcitabine 1000 mg/m² on Day 1; oxaliplatin 100 mg/m² on Day 1, per 21-day cycle) + PD-1 inhibitor (200 mg intravenously on Day 1 per 21-day cycle).

Control group: P-GemOx + PD-1 inhibitor (same dosage/schedule as the experimental group, without golidocitinib). All participants will receive 6 cycles of induction therapy. Those achieving CR or partial response (PR) after induction will receive maintenance therapy for 1 year: the experimental group will continue golidocitinib + PD-1 inhibitor, while the control group will receive PD-1 inhibitor alone (both per 21-day cycles). The primary outcome is the complete response rate (CRR) after 6 induction cycles (assessed per the 2014 Lugano Classification for Lymphoma). Secondary outcomes include overall response rate (ORR), 2-year progression-free survival (PFS), 2-year overall survival (OS), and the incidence of treatment-related adverse events (graded per NCI-CTCAE Version 5.0). 40 participants will be enrolled across multiple Chinese medical centers. This Phase 2 trial will provide preliminary evidence to determine whether the golidocitinib combination regimen is a safe and effective first-line option for advanced or non-nasal ENKTL.