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Chronic Obstructive Pulmonary DiseasePhase 2NCT05638776

Treatment of Chronic Obstructive Pulmonary Disease (COPD) With Diffusion Capacity Defect by REGEND001 Cell Therapy

A Phase 2 study testing REGEND001 cell therapy in people with Chronic Obstructive Pulmonary Disease, run by Regend Therapeutics at 8 sites in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Chronic obstructive pulmonary disease (COPD) is the third leading cause of death worldwide with the characterization of obstructed airflow. In a large number of patients, diffusion function is impaired along with the progression of disease. Read more about this study

Who is it for?
Ages 40 to 75 years
Conditions the study is for
Chronic Obstructive Pulmonary Disease
What is being tested?
REGEND001 cell therapy
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
58 participants
Where
8 sitesChina
Study dates
6 Dec 2022to 9 Jul 2025
Phase
Phase 2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 40 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Male or female, aged 40 to 75 at the time of signing informed consent.
  • Diagnosed with COPD according to the 2021 Global Initiative for Chronic Obstructive Lung Disease (GOLD).
  • The ratio of forced expiratory volume in one second (FEV1)/forced vital capacity (FVC)FEV1/FVC is < 70% after inhalation of bronchodilators.
  • The diffusion function of carbon monoxide (DLCO) is ≥ 20% and < 80% of the predicted value at screening.
  • Tolerated to pulmonary function tests.
  • Tolerated to bronchoscopy
  • Voluntary to sign the informed consent, coordinated to finish the trial-related procedures and tests, and capable of recording or stating the change of disease condition in a relatively complete manner.

Who cannot join

  • Females who are pregnant, nursing, or planning to be pregnant within a year after using this product (or males whose spouse planning to be pregnant);
  • Subjects with a positive result for any of the following tests at screening: treponema pallidum antibody (TP-Ab), human immunodeficiency virus (HIV) antibody, hepatitis B surface antigen (HBsAg), or hepatitis C virus (HCV) antibody. But except the followings:
  • Hepatitis B virus carriers (only HBsAg positive without any hepatitis symptom or sign, and all liver function tests present normal results or abnormal markers without clinical significance by the assessment of investigators);
  • Cured hepatitis C patients (negative in HCV ribonucleic acid (RNA) test);
  • Subject with assessed survival time of < 1 year by investigators at screening;
  • Subject with malignant tumors or a history of malignant tumors at screening;
Show all 21Show fewer
  • Subject with infections in lung or other sites, requiring intravenous drug treatment within a week prior to screening;
  • Subject with more than 4 moderate-to-severe AECOPD, resulting in hospitalization within a year prior to screening;
  • Subject with one or more pathogenetic or serologic findings of the novel coronavirus infection, or symptoms of suspected infection within 6 weeks prior to screening;
  • Subject with a history of invasive or noninvasive mechanical ventilation within 4 weeks prior to screening;
  • Subject who has taken prednisone tablets orally at a dose of ≥ 20 mg/day (or equivalent amount of other oral corticosteroids) within 4 weeks prior to screening;
  • Subject with major lung diseases other than COPD by assessment of investigators at screening;
  • Subject with severe systemic diseases other than lung within 6 months prior to screening and assessed to be inappropriate to participate in this trial by investigators;
  • Subject with severe anemia or poorly controlled granulocyte deficiency, thrombocytopenia by assessment of investigators;
  • Subject with abnormal coagulation and assessed to be negative for the safety of fiberoptic bronchoscopy operations at screening;
  • Subject requiring long-term anticoagulation therapy of using antiplatelet coagulant therapeutic agents and disable to discontinue their medications 1 week prior to cell collection and cell infusion as assessed by investigators;
  • Subject with a risk of suicide, a history of mental illness or a history of epilepsy at screening;
  • Subject with severe arrhythmias or heart conduction disorders (degree II or above) in 12-lead ECG test at screening;
  • Subject participated in other clinical trials with interventions within 3 months prior to screening;
  • Investigators, co-investigators, research coordinators, employees of research participants or research centers, or their family members;
  • Any circumstance considered to probably increase the risk of patients or interfere with the clinical trial.

Trial locations and contacts

8 sites in 1 country.

8 sites in 1 country

China8 sites
  • China-Japan Friendship Hospital

    Beijing, Beijing Municipality

  • Xiangya Hospital of Central South University

    Changsha, Hunan, 410008

  • The Southwest Hospital of AMU

    Chongqing, Chongqing Municipality

  • The First Affiliated Hospital of Guangzhou Medical University

    Guangzhou, Guangdong

  • The First Affiliated Hospital of Nanchang University

    Nanchang, Jiangxi, 330006

  • Shanghai East Hospital

    Shanghai, Shanghai Municipality

  • Zhongshan Hospital affiliated to Fudan University

    Shanghai, Shanghai Municipality

  • The First Affiliated Hospital of Soochow University

    Suzhou, Jiangsu, 215006

Other trials in China

About this study

Official title: A Multicenter, Randomized, Single-Blind, Placebo-Parallel-Controlled Research of REGEND001 Cell Therapy for Treatment of Chronic Obstructive Pulmonary Disease (COPD) With Diffusion Capacity Defect

Chronic obstructive pulmonary disease (COPD) is the third leading cause of death worldwide with the characterization of obstructed airflow. In a large number of patients, diffusion function is impaired along with the progression of disease. REGEND001 cell therapy, comprised of airway basal cells with ability to regenerate lung tissue, is promising to COPD treatment. In this study, a multicenter, randomized, single-blind, placebo-parallel-controlled trial is performed to assess the efficacy and safety of REGEND001 cell therapy in treatment of chronic obstructive pulmonary disease with diffusion capacity defect.

Being tested
REGEND001 cell therapy, Placebo
Medical subject headings
Pulmonary Disease, Chronic Obstructive

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • REGEND001 cell therapyDrug

    Transplantation of the cell product

  • PlaceboDrug

    Transplantation of Placebo

Study groups in NCT05638776
Study groupRoleWhat they receive
REGEND001 cell therapyExperimentalREGEND001 cell therapy
PlaceboPlacebo comparatorPlacebo
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Responsive rate (RR)

    Ratio of subjects responsive to the treatment. Subject is considered to be responsive to the treatment as (1) the lung diffusing capacity for carbon monoxide (DLCO) improvement meets MCID (minimal clinically important difference) at 12 or/and 24 weeks after therapy; and (2) mean of DLCO at 12 and 24 weeks is no less than the baseline value. MCID of DLCO improvement is 1.1 ml/min/mmHg (0.37 mmol·min -1·kPa-1) or 11% for measured value compared to baseline .

    Measured: 12 weeks after treatment, 24 weeks after treatment

Secondary outcomes (21)
  1. Change of lung diffusing capacity for carbon monoxide (DLCO) from baseline

    DLCO is considered a measure of the conductance of CO across the alveolar-capillary membrane and its binding with hemoglobin.

    Measured: Within 52 weeks after treatment

  2. Change of the alveolar volume (VA) from baseline

    Alveolar ventilation is the exchange of gas between the alveoli and the external environment. It is the process by which oxygen is brought into the lungs from the atmosphere and by which the carbon dioxide carried into the lungs in the mixed venous blood is expelled from the body.

    Measured: Winthin 52 weeks after treatment

  3. Change of images of lung by high resolution computed tomography (HR-CT) from baseline

    HR-CT images of lung will be analyzed to indicate the change of pulmonary structure.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  4. Change of forced vital capacity (FVC) from baseline

    FVC is the full amount of air that can be exhaled with effort in a complete breath.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  5. Change of forced expiratory volume in one second (FEV1) from baseline

    FEV1 is the volume of breath exhaled with effort in one second.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  6. Change of forced expiratory volume in one second (FEV1)/forced vital capacity (FVC) from baseline

    The FEV1/FVC is a ratio that reflects the amount of air you can forcefully exhale from your lungs. It's measured by spirometry, a test used to evaluate lung function.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  7. Change of the diffusing capacity for carbon monoxide/ the alveolar volume (DLCO/VA) from baseline

    The DLCO test refers to the diffusing capacity for carbon monoxide in the lungs. It's a type of pulmonary function test that helps to assess how well gas is exchanged between the lungs and the bloodstream.Since DLCO is affected by the amount of inhaled gas and lung volume, the subject's alveolar ventilation (VA) is also considered when evaluating diffusion function to exclude the effect of lung volume on diffusion volume.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  8. Change of 6-minute-walk test (6MWT) from baseline

    The 6MWT is a commonly used test for the objective assessment of functional exercise capacity by testing the distance patients can walk at the fastest speed within 6 minutes.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  9. Change of modified medical research council (mMRC) dyspnea scale from baseline

    It is a questionnaire to evaluate how breathlessness impacts daily activities. According to the degree of activity impacted by shortness of breath, mMRC results are divided into 0-4 grades. Grade 0 means no breathlessness except on strenuous exercise; grade 1 means shortness of breath when hurrying on the level or walking up a slight hill; grade 2 means walking slower than people of same age on the level because of breathlessness or having to stop to catch breath when walking at their own pace on the level; grade 3 means stoping for breath after walking ∼100 m or after few minutes on the level ground; and grade 4 means too breathless to leave the house, or breathless when dressing or undressing.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  10. Change of chronic obstructive pulmonary disease Assessment Test (CAT) from baseline

    The CAT is a questionnaire for people with COPD. It is designed to measure the impact of COPD on a person's life, and how this changes over time. The CAT scale includes a total of 8 items, 0~5 points for each item. The total score ranges 0~40 points. Score of 0-10 points indicates slight impact; Score of 11-20 points indicates medium impact: Score of 21-30 points indicates serious impact; Score of 31-40 points indicates very serious impact.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  11. Annual frequency of exacerbations

    Frequency of exacerbations all through the year. A lower frequency means improvement of disease.

    Measured: 1 year after treatment

  12. Symptoms, physical examination

    Number of cases with abnormal physical examination findings.

    Measured: Baseline, treatment day (D1), 24 hours after treatment, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  13. 12-lead ECG

    Number of cases with abnormal 12-lead Electrocardiogram (ECG).

    Measured: 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  14. Blood routine

    Number of cases with abnormal laboratory test results.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  15. Urine routine

    Number of cases with abnormal laboratory test results.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  16. Blood biochemistry

    Number of cases with abnormal laboratory test results.

    Measured: Baseline, 4 weeks after treatment, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  17. Function of blood clotting

    Number of cases with abnormal function of blood clotting.

    Measured: Baseline, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  18. Carcinoembryonic antigen (CEA)

    CEA is a tumor marker used for early diagnosis of lung cancer.

    Measured: Baseline, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  19. Neuron-specific enolase (NSE)

    NSE is a tumor marker significantly elevated in small cell lung cancer.

    Measured: Baseline, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  20. Cytokeratin-19-fragment (CYFRA21-1)

    CYFRA21-1 is a tumor marker which is valuable for the pathological classification and prognosis evaluation of lung cancer.

    Measured: Baseline, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

  21. Squamous cell carcinoma antigen (SCC)

    SCC is a specific marker for lung squamous cell carcinoma.Tumor markers are monitored to assess the safety.

    Measured: Baseline, 12 weeks after treatment, 24 weeks after treatment, 52 weeks after treatment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted6 Dec 2022
  2. Study start6 Dec 2022
  3. Primary completion9 Jul 2025
  4. Study completion9 Jul 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Participant
Enrolment
58 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05638776
Sponsor's protocol ID
REGEND001-COPD-201
Status last verified
Jul 2025
First submitted
2 Nov 2022
Last updated
28 Sep 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing REGEND001 cell therapy in people with Chronic Obstructive Pulmonary Disease, run by Regend Therapeutics at 8 sites in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 21 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 28 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 8 sites in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Responsive rate (RR) (time frame: 12 weeks after treatment, 24 weeks after treatment). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Sep 2026.

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