NCT07477587

A Study to Compare the PK Characteristics, Safety, Tolerability, and Immunogenicity of HLX15-SC With DARZALEX FASPRO® in Combination With Lenalidomide and Dexamethasone (Rd) in Transplant-ineligible Patients With Newly Diagnosed Multiple Myeloma

A Randomized, Double-blind, Parallel-controlled Phase I Study to Compare the Pharmacokinetic Characteristics, Safety, Tolerability, and Immunogenicity of HLX15-SC With DARZALEX FASPRO® in Combination With Lenalidomide and Dexamethasone (Rd) in Transplant-ineligible Patients With Newly Diagnosed Multiple Myeloma

• Status: Not Yet Recruiting
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 258 (estimated)
• Sponsor: Shanghai Henlius Biotech · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to compare the pharmacokinetic (PK) similarity, safety, tolerability, immunogenicity, and efficacy of HLX15-SC versus US-DARZALEX FASPRO® following single and multiple subcutaneous (SC) injections in newly diagnosed MM patients ineligible for transplant. Participants who meet all inclusion criteria and none of the exclusion criteria will receive either the HLX15-SC-Rd regimen or the D-Rd regimen for 4 cycles (one cycle = 4 weeks). After 4 cycles of treatment, based on clinical benefit and participant preference, participants may continue to receive the locally marketed daratumumab subcutaneous formulation (Dara-SC) in combination with Rd according to clinical practice, up to 32 weeks or until loss of clinical benefit, death, unacceptable toxicity, withdrawal of informed consent, or any other protocol-specified reason, whichever occurs first. After 32 weeks of dosing, participants will continue to receive appropriate standard of care according to local guidelines (including marketed Dara-SC).

Conditions

• Multiple Myeloma (MM)

Interventions

Type	Name	Description
DRUG	HLX15-SC-Rd	Subjects will receive 1800 mg HLX15-SC via SC administration for up to 16 weeks: weekly during Week 1-8 (Cycle 1-2; 1 cycle = 4 weeks) and every two weeks during Week 9-16 (Cycle 3-4).
DRUG	US-DARZALEX FASPRO®-Rd	Subjects will receive 1800 mg US-DARZALEX FASPRO® via SC administration for up to 16 weeks: weekly during Week 1-8 (Cycle 1-2; 1 cycle = 4 weeks) and every two weeks during Week 9-16 (Cycle 3-4).

Timeline

• Start date: 2026-05-27
• Primary completion: 2027-05-25
• Completion: 2028-02-22
• First posted: 2026-03-17
• Last updated: 2026-03-17

Locations

9 sites across 2 countries: United States, China

Regulatory

• FDA-regulated drug study