Comparing QL2109 and DARZALEX FASPRO® in Healthy Adults

A Randomized, Double-blind, Single-dose, Parallel Study to Compare the Pharmacokinetics and Safety of QL2109 and DARZALEX FASPRO® in Healthy Male Adults

PHASE1 · Qilu Pharmaceutical Co., Ltd. · NCT06371534

This study is testing a new treatment called QL2109 against DARZALEX FASPRO® in healthy men to see how they compare in terms of safety and how the body processes them.

Quick facts

PhasePHASE1
Study typeInterventional
Enrollment228 (estimated)
Ages18 Years to 50 Years
SexMale
SponsorQilu Pharmaceutical Co., Ltd. (industry)
Drugs / interventionsdaratumumab
Locations2 sites (Hangzhou, Zhejiang and 1 other locations)
Trial IDNCT06371534 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to compare the pharmacokinetic and safety profiles of QL2109 and DARZALEX FASPRO® in healthy male volunteers. Participants will receive a single injection of either QL2109 or DARZALEX FASPRO®, and researchers will assess the pharmacokinetic similarities, safety, and immunogenicity between the two treatments. The study is designed as a phase I, randomized, double-blind, and parallel group trial to ensure robust and unbiased results.

Who should consider this trial

Good fit: Ideal candidates for this study are healthy male adults aged 18 to 50 with a body weight between 65 kg and 90 kg and a BMI between 18.0 and 28.0.

Not a fit: Patients with clinically significant diseases or abnormalities in various body systems may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide insights into the safety and effectiveness of QL2109 as a potential alternative to DARZALEX FASPRO®.

How similar studies have performed: While this study is focused on comparing two specific treatments, similar pharmacokinetic studies have shown promise in assessing drug safety and efficacy.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Sign the informed consent form and fully understand the test content,process and possible adverse reactions, and be able to complete the study according to the test plan requirements;
* Age 18 \~ 50 (inclusive) years , male;
* 65.0 kg≤ body weight ≤90.0 kg and 18.0 kg/m2≤ Body mass index (BMI)

  ≤28.0 kg/m2;
* Agree to use effective contraception throughout the study period (including but not limited to: physical contraception, surgery, abstinence, etc.) until at least 6 months after the study dosing;
* No history of disease or abnormal past medical history is not clinically significant, and the study doctor's judgment has no impact on the trial.

Exclusion Criteria:

* Have been or are currently suffering from any clinically serious disease of the circulatory system, endocrine system, nervous system, digestive system,respiratory system, urogenital system, hematology, immunology, psychiatric and metabolic abnormalities, or any other disease that can interfere with the test results;
* With acute, chronic, or latent infectious diseases within 1 month before administration;
* With known immune system diseases (autoimmune diseases and immunodeficiency diseases), including but not limited to autoimmune hemolytic anemia;
* Has experienced a recent single dermatomal herpes zoster eruption within 6 months before administration;
* Has a history of multi-dermatomal herpes zoster or central nervous system (CNS) herpes zoster during the screening period or before;
* Positive for indirect antiglobulin test (Indirect Coombs test);
* Use of monoclonal antibody, cell therapy, etc. within 6 months before administration, or daratumumab or its analogues or drugs targeting CD38 before administration;
* Use of any medication, including prescription drugs, over-the-counter (OTC) drugs, and Chinese herbal medicines, within 2 weeks before administration;
* History of drug or food allergy, including allergy to any drug or drug excipient used in the study;
* Fear of needles or blood, or difficulty in venous blood collection (history of difficult blood collection or corresponding symptoms and signs, unable to tolerate venipuncture);
* History of blood donation or total blood loss of 200 mL or more within 3 months before administration;
* Participants in clinical trials of any other drug or device within 3 months (or 5 half-lives of the corresponding investigational product if the half-life of the drug is long (5 half-lives \> 3 months)) before administration;
* Major surgery within 3 months before signing the ICF;
* Positive for hepatitis B virus antibodies, hepatitis C virus (HCV) antibodies, human immunodeficiency virus (HIV), or treponema pallidum antibodies (Anti-TP);
* History of drug abuse or substance abuse, or positive in urine drug screening;
* Patients who have been vaccinated with attenuated or live virus vaccine (such as Bacille Calmette-Guérin, BCG) or viral vector vaccine within 12 months before the first dose, or who plan to be vaccinated with such vaccines within 12 months after administration;
* Patients who have been vaccinated with vaccines other than the above attenuated or live viral vaccines and viral vector vaccines within 1 month before the first dose, such as inactivated vaccines and recombinant subunit vaccines;
* Subjects with any other conditions that, in the judgment of the investigator, are ineligible for participation in the study.

Where this trial is running

Hangzhou, Zhejiang and 1 other locations

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Tumor

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.