A Comparative Phase 1 Study to Evaluate the Pharmacokinetic and Safety of QL2302 vs. Tezspire® in Healthy Subjects

December 25, 2025 updated by: Qilu Pharmaceutical Co., Ltd.

A Randomized, Double-blinded, Parallel, Positive-controlled Study to Compare the Pharmacokinetic, Safety and Immunogenicity of Single-dose QL2302 vs. Tezspire ® in Healthy Subjects

This is a randomized, double-blinded, controlled Phase 1 study to compare the pharmacokinetic, safety and immunogenicity of QL2302 versus Tezspire®（Tezepelumab） in healthy subjects after a single dose.

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.
178

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. Healthy subjects aged from 18 to 45 years (including the boundary value), male and female.
  2. Body weight 50.0-85.0 kg (including boundary value), and BMI 19.0-26.0 kg/m2 (including boundary value).
  3. Normal results or abnormal results with no clinical significance of disease history/vital signs/laboratory examination/ECG according to the PI's judgment.
  4. The subject (including partner) has no pregnancy plan or sperm donation plan during the whole trial period, and voluntarily adopts effective contraceptive measures.
  5. Sign the informed consent before participating the study, and fully understand the content, process and possible risks.

Exclusion Criteria:

  1. History of allergic reactions or hypersensitivity to Tezepelumab or excipients, or other biologics.
  2. Donated at least 400 mL within 3 months prior to screening, or at least 200 mL within 4 weeks prior to the screening visit, or plan to donate blood during the study.
  3. Smoked more than 5 cigarettes on average per day within 3 months prior to the screening visit.
  4. Diagnosed as alcoholic, or subjects who consumed more than 14 units of alcohol per week within 6 months before the screening visit, or with positive alcohol test result on Day-1.
  5. Drug abusers within 1 year prior to the screening visit, or subjects with positive urine drug test result during the screening period or on Day-1.
  6. History of hospitalization due to infection or receiving anti-infection therapy through intravenous within 8 weeks prior to the screening visit, or had infection within 2 weeks prior to the screening visit.
  7. Diagnosed a helminth parasitic infection within 6 months prior to the screening visit that has not been treated or has not responded to standard of care therapy.
  8. History of active TB infection or a positive TB test result during screening period.
  9. History of malignancy (except for NMSC treated with apparent success ≥5 years prior to screening).
  10. Diagnosed with disease with abnormal clinical manifestations that should be excluded as judged by the PI.
  11. History of treated by Tezepelumab or other TSLP-targeted biologics.
  12. Have used prescription, OTC, herbal medicine, or health supplement within 2 weeks prior to randomization.
  13. Vaccination with a live vaccine within 4 weeks or a attenuated vaccine within 2 weeks prior to randomization.
  14. Have used biologics within 3 months prior to randomization, or within 5 half-life period before randomization. (whichever is longer)
  15. Receiving treatment with any investigational product within 3 month prior to randomization or in 5 half-life period (whichever is longer), or treatment with any investigational equipment within 3 month prior to randomization.
  16. Positive HbsAg, or HCV-Ab, or TPAb, or HIV antibody tests.
  17. Female is pregnant or breastfeeding, or female who have not taken effective contraceptive measures within 14 days prior to randomization, or female with positive blood pregnant test.
  18. Other conditions that considered inappropriate for participating the study, as per the investigator.

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: Quadruple

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: QL2302
Drug: QL2302
210mg/1.91mL; single dose; subcutaneous injection
Active Comparator: Tezspire®
Drug: Tezspire
210mg/1.91mL; single dose; subcutaneous 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
Pharmacokinetics Endpoint
Time Frame: Day 1-Day 134
Peak plasma concentration (Cmax)
Day 1-Day 134
Pharmacokinetics Endpoint
Time Frame: Day 1-Day 134
Area under the plasma concentration versus time curve from time 0 to infinity (AUC0-∞)
Day 1-Day 134

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.
December 22, 2025

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.
July 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.
September 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).
December 12, 2025

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.
December 25, 2025

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.
January 8, 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.
January 8, 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.
December 25, 2025

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.
December 1, 2025

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.
  • QL2302-101

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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Conditions

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