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Study of Sugemalimab (or Placebo) Plus PGemOx Regimen in Participants With Extranodal NK/T-Cell Lymphoma

A Phase III, Randomized, Double-Blind, Multicenter Study of Sugemalimab (CS1001) Plus PGemOx Regimen Versus Placebo Plus PGemOx for Subjects With Relapsed or Refractory Extranodal NK/T-Cell Lymphoma (R/R ENKTL)

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05700448
Enrollment
150
Registered
2023-01-26
Start date
2026-06-01
Completion date
2029-12-01
Last updated
2026-02-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Extranodal NK/T-cell Lymphoma

Brief summary

The purpose of this study is to evaluate the efficacy and safety of sugemalimab (CS1001) in combination with PGemOx regimen (pegaspargase, gemcitabine, oxaliplatin) in treatment of adult patients with Extranodal NK/T-Cell Lymphoma (ENKTL) who have relapsed or become refractory to asparaginase-based regimens.

Interventions

BIOLOGICALSugemalimab

IV infusion

DRUGPlacebo

IV infusion

DRUGPegaspargase

Intramuscular injection

DRUGGemcitabine

IV infusion

DRUGOxaliplatin

IV infusion

Sponsors

CStone Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Has ENKTL histologically confirmed by the study center. Nasal and non-nasal ENKTL are both allowed. * Has relapsed or refractory ENKTL after prior asparaginase-based chemotherapy or chemoradiotherapy. * Has Eastern Cooperative Oncology Group (ECOG) performance status score of 0-2. * Has at least one measurable lesion per Lugano 2014 classification. * Is willing to provide stained tumor tissue sections and corresponding pathological reports or unstained tumor tissue sections (or tissue block) for central pathology review. * Has adequate organ function. * Has life expectancy of greater than 3 months.

Exclusion criteria

* Has aggressive natural killer-cell leukemia, current central nervous system (CNS) involvement or is concomitant with hemophagocytic lymphohistiocytosis. * Has known additional malignancy within 5 years prior to randomization. * Has an active autoimmune disease or has had an autoimmune disease that may relapse. * Has had a major surgical procedure within 28 days or radiotherapy within 90 days before the first dose of study treatment. * Has active tuberculosis infection. * Has a known history of human immunodeficiency virus (HIV) infection and/or acquired immune deficiency syndrome (AIDS). * Has a known active Hepatitis B or C virus infection. * Has received systemic anti-cancer therapy within 28 days before the first dose of study treatment, including chemotherapy, immunotherapy, biological therapy (e.g. cancer vaccine, cytokine therapy or growth factors to treat cancer). * Has used traditional Chinese medicines or herbal preparations with anti-tumor indications within 7 days before the first dose of study treatment. * Has received systemic corticosteroid or any other immunosuppressive therapy within 14 days before the first dose of study treatment. * Has received any treatment of antibody or drug that targets at T-cell coregulatory pathways or immune checkpoint pathways. * Has toxicity from prior anti-cancer treatment, except for alopecia and fatigue, that has not recovered to baseline or ≤ Grade 1 according to Common Terminology Criteria for Adverse Events (CTCAE) v5.0 before the first dose of study treatment. * Has had allogenic hematopoietic stem cell transplantation (HSCT) within 5 years or autologous HSCT within 90 days before the first dose of study treatment. * Has a known severe hypersensitivity to sugemalimab, its active substance and/or any of its excipients, or to other monoclonal antibodies. * Female participants who are pregnant or breastfeeding. * Is currently participating in or has participated in a trial of an investigational agent within 28 days before to the first dose of study treatment.

Design outcomes

Primary

MeasureTime frame
Progression-free survival (PFS) evaluated by blinded independent central review (BICR) according to Criteria for Response Assessment of Lymphoma: Lugano 2014 ClassificationApproximately 39 months after First Patient In

Secondary

MeasureTime frame
Overall survival (OS)Approximately 39 months after First Patient In
Progression-free survival (PFS) evaluated by the Investigator according to Criteria for Response Assessment of Lymphoma: Lugano 2014 ClassificationApproximately 39 months after First Patient In
Objective response rate (ORR) evaluated by BICR and the Investigator according to Criteria for Response Assessment of Lymphoma: Lugano 2014 ClassificationApproximately 39 months after First Patient In
Duration of response (DoR) evaluated by BICR and the Investigator according to Criteria for Response Assessment of Lymphoma: Lugano 2014 ClassificationApproximately 39 months after First Patient In

Contacts

CONTACTWenyun Zhang
cstoneRA@cstonepharma.com+86 021-60333416
STUDY_DIRECTORQinzhou Qi

CStone Pharmaceuticals

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026