A Study of CM512 in Patients With Chronic Rhinosinusitis With Nasal Polyposis （NEZHA-1）

August 14, 2026 updated by: Beijing Keymed Biosciences Co., Ltd.

A Randomized, Double-blind, Placebo-controlled Phase II Clinical Study to Evaluate the Efficacy and Safety of CM512 in Patients With Chronic Rhinosinusitis With Nasal Polyposis

This is a multi-center, randomized, double blind, placebo-controlled Phase II study to evaluate the efficacy and safety of CM512, and to observe the life quality of subjects, the Pharmacokinetics, Pharmacodynamics and immunogenicity of CM512 in patients with chronic rhinosinusitis with nasal polyposis (CRSwNP).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

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.

Detailed Description

The study consists of a Screening Period (up to 4 weeks), Treatment Period (24 weeks for double-blind treatment period) and Safety Follow-up Period (12 weeks).

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 (Actual)

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.
120

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 2

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.

Study Locations

  • China
      • Beijing, China
        • Beijing Tong-Ren hospital

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
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • with chronic rhinosinusitis with nasal polyposis (CRSwNP).
  • Nasal Polyp Score (NPS) of ≥5 with a minimum score of 2 in each nasal cavity.
  • Nasal Congestion Score of 2 or 3 at screening period, and at least 2 at baseline.
  • Contraception.

Exclusion Criteria:

  • Not enough washing out period for previous therapy, e.g., less than 10 weeks or 5 half-lives (whichever is longer) for Interleukin (IL)-4 receptor alpha subunit antagonists, less than 8 weeks or 5 half-lives for biologic therapy/systemic immunosuppressant, less than 6 months for sinus surgery (including polypectomy).With malignant or benign tumor of nasal cavity.
  • Vaccination with live attenuated vaccine within 30 days before randomization or during the planned study period.

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.
Placebo Comparator: Placebo
Drug: Placebo
Administered subcutaneous injection
Experimental: CM512 Dose 1
Biological: CM512
Administered subcutaneous injection
Experimental: CM512 Dose 2
Biological: CM512
Administered subcutaneous injection
Experimental: CM512 Dose 3
Biological: CM512
Administered 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
Nasal Polyps Score (NPS)
Time Frame: at week 24
Change from baseline in the Nasal Polyps Score (NPS) at week 24. NPS score ranges from 0-8 (sum of 0-4 for each nasal passage scores), higher score means a worse outcome.
at week 24

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Change from baseline in NPS at other visits
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline in Nasal Congestion Score (NCS) at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Proportion of participants achieving an improvement in NPS from baseline of ≥ 1 point and ≥ 2 points at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline in Total Symptom Score (TSS) at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline in Loss of Smell (LoS) score at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline in Lund-Mackay (LMK) score evaluated by sinus computed tomography (CT) at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline in 22-item Sino-nasal Outcome Test (SNOT-22) score at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Incidence of treatment-emergent adverse events (TEAEs)
Time Frame: baseline up to week 36
baseline up to week 36
physical examination
Time Frame: baseline up to week 36
baseline up to week 36
vital signs
Time Frame: baseline up to week 36
baseline up to week 36
12-lead electrocardiogram (ECG)
Time Frame: baseline up to week 36
baseline up to week 36
clinical laboratory tests
Time Frame: baseline up to week 36
baseline up to week 36
Concentration of CM512 in serum
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in serum total immunoglobulin E (IgE) level at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in peripheral blood eosinophil (EOS) level at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in serum interleukin-5 (IL-5) level at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in serum interleukin-13 (IL-13) level at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in serum thymic stromal lymphopoietin (TSLP) level at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in serum thymus and activation-regulated chemokine (TARC) level at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in serum eotaxin-3 level at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in serum chemokine 13 (CCL13) level at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in serum chemokine 22 (CCL22) level at each visit
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in serum periostin level at each visit.
Time Frame: baseline up to week 36
baseline up to week 36
Change from baseline and percent change from baseline in EOS levels in nasal polyp biopsy tissue
Time Frame: baseline up to week 24
baseline up to week 24
Incidence of Anti-drug antibodies (ADA)
Time Frame: baseline up to week 36
baseline up to week 36

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.
Beijing Keymed Biosciences Co., Ltd.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Luo Zhang, Beijing Tong-Ren hospital

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 (Actual)

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.
May 16, 2025

Primary Completion (Actual)

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.
April 20, 2026

Study Completion (Actual)

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.
July 10, 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).
April 9, 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.
April 9, 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.
April 16, 2025

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.
August 18, 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.
August 14, 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.
August 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.
  • CM512-102101

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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