A Study to Compare the PK , Safety, and Immunogenicity of QL2109 With Daratumumab in Male Subjects

February 3, 2026 updated by: Qilu Pharmaceutical Co., Ltd.

Phase I Study to Compare the Pharmacokinetic Characteristics, Safety, and Immunogenicity (Randomized, Double-blind, Single Dose, Parallel Controlled) of QL2109 With Daratumumab Injection in Healthy Chinese Male Subjects

The goal of this clinical study is to establish the comparability of the pharmacokinetics and similarity of the safety and immunogenicity profiles of QL2109 and Darzalex following a single intravenous infusion in healthy male subjects.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
102

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  1. The subject should be a voluntary participant who has understood and signed the ICF.
  2. Age ≥ 18 years and ≤ 50 years, male (including the boundary values).
  3. Body weight ≥ 55 kilograms (kg), body mass index (BMI) = weight (kg) / height² (m²), with BMI within the range of 18-28 (including the boundary values).
  4. The subject agrees to use reliable contraceptive measures (such as abstinence, sterilization surgery, oral contraceptives, injectable contraceptives like medroxyprogesterone, or subcutaneous contraceptive implants) for themselves and their partner during the study and for 6 months after the trial drug infusion.
  5. No history of diseases, or any past medical history abnormalities are deemed clinically insignificant and judged by the study physician to have no impact on the trial.

Exclusion Criteria:

  1. Individuals with a history or current diagnosis of any clinically significant disease that may interfere with the trial results, including but not limited to disorders of the circulatory, endocrine, nervous, digestive, respiratory, hematological, immunological, psychiatric, or metabolic systems, or those with clinically significant allergic reactions or allergic predisposition, angioedema, interstitial pneumonia, or acute respiratory distress syndrome.
  2. Individuals with acute, chronic, or potential infectious diseases within 1 month prior to dosing.
  3. Individuals with known immune system disorders (autoimmune diseases or immunodeficiency diseases), including but not limited to autoimmune hemolytic anemia.
  4. Individuals with ocular diseases, including a history of intraocular surgery or laser eye surgery.
  5. Individuals with a history of localized cutaneous herpes zoster within 6 months prior to dosing.
  6. Individuals with disseminated cutaneous herpes zoster or herpes zoster involving the central nervous system, either currently or historically.
  7. Individuals with a positive blood group antibody screening (indirect antiglobulin test).
  8. Individuals who have used monoclonal antibodies, cell therapies, or similar treatments within 6 months prior to dosing, or have previously received daratumumab or its analogues, or drugs targeting CD38.
  9. Individuals who have taken any medications (except premedication for QL2109 injection/DARZALEX®) within 2 weeks prior to dosing, including prescription drugs, over-the-counter drugs, and herbal medicines.
  10. Individuals with a history of drug or food allergies, including allergies to any drug or excipient used in the clinical trial.
  11. Individuals with a history of needle or blood phobia, or difficulty with venous blood collection (e.g., history of difficult blood draws or symptoms/signs indicating intolerance to venipuncture).
  12. Individuals who have donated blood or experienced blood loss totaling 200 mL or more within 3 months prior to dosing.
  13. Individuals who have participated in any other drug or medical device clinical trials within 3 months prior to dosing (or within 5 half-lives of the investigational drug if the half-life exceeds 3 months).
  14. Individuals who have undergone major surgery within 3 months prior to signing the informed consent form (ICF).
  15. Individuals who are positive for hepatitis B surface antigen (HBsAg), hepatitis B e antigen (HBeAg), and/or hepatitis B core antibody (HBcAb); positive for hepatitis C virus antibody (HCV); positive for Treponema pallidum antibody; or positive for human immunodeficiency virus (HIV) antibody.
  16. Individuals with a history of drug abuse or substance dependence, or those with a positive urine drug screen.
  17. Individuals who have received live attenuated or live virus vaccines (e.g., Bacille Calmette-Guérin [BCG]) or viral vector vaccines within 12 months prior to the first dose, or plan to receive such vaccines within 12 months after dosing.
  18. Individuals who have received other vaccines, such as inactivated vaccines or recombinant subunit vaccines, within 1 month prior to the first dose, excluding the aforementioned live attenuated or live virus vaccines and viral vector vaccines.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: QL2109
Drug: QL2109
Recombinant anti-CD38 fully human monoclonal antibody.
Active Comparator: Darzalex
Drug: Darzalex
Daratumumab injection

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
AUC0-∞
Time Frame: Up to Day 71
Area under the serum concentration-time curve from time 0 to infinity
Up to Day 71

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Qilu Pharmaceutical Co., Ltd.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 3, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 3, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 10, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 10, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 3, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • QL2109-102

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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