Safety and Efficacy Study of Allogeneic Human Dental Pulp Mesenchymal Stem Cells to Treat Severe COVID-19 Patients
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ClinicalTrials.gov Identifier: NCT04336254 |
Recruitment Status : Unknown
Verified March 2021 by Ye Qingsong, Renmin Hospital of Wuhan University.
Recruitment status was: Recruiting
First Posted : April 7, 2020
Last Update Posted : March 10, 2021
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
COVID-19 | Biological: allogeneic human dental pulp stem cells (BSH BTC & Utooth BTC) Other: Intravenous saline injection (Placebo) | Phase 1 Phase 2 |
This clinical trial is set out to evaluate the followings:
- the safety and efficacy of allogeneic human dental pulp mesenchymal stem cells in the treatment of severe pneumonia caused by COVID-19;
- to explore the effects of human dental pulp mesenchymal stem cells in the treatment of severe pneumonia of COVID-19 in terms of reducing mortality and improving clinical prognosis; and
- to discover a new therapeutic strategy for COVID-19 using allogeneic human dental pulp mesenchymal stem cells.
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 20 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Triple (Participant, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | Safety and Efficacy Study of Allogeneic Human Dental Pulp Mesenchymal Stem Cells to Treat Severe Pneumonia of COVID-19:a Single-center, Prospective, Randomised Clinical Trial |
Actual Study Start Date : | May 6, 2020 |
Estimated Primary Completion Date : | November 30, 2021 |
Estimated Study Completion Date : | December 31, 2021 |

Arm | Intervention/treatment |
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Experimental: hDPSCs group
Routine treatment + Intravenous injection of human dental pulp stem cells
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Biological: allogeneic human dental pulp stem cells (BSH BTC & Utooth BTC)
Intravenous injection of 3.0x10e7 human dental pulp stem cells solution (30ml) on day 1, day 4 and day 7, based on routine treatment of COVID-19 |
Placebo Comparator: Control group
Routine treatment + Intravenous saline injection (Placebo)
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Other: Intravenous saline injection (Placebo)
Intravenous injection of 3ml of 0.9% saline on day 1, day 4 and day 7, based on routine treatment of COVID-19 |
- TTCI [ Time Frame: 1-28 days ]Time to Clinical Improvement
- Lung lesion [ Time Frame: 1-28 days ]Lung Lesion by CT
- Immune function [ Time Frame: 1-28 days ]
- Th1 cytokines: IL-1β, IL- 2, TNF-a, ITN-γ;
- Th2 cytokines: IL- 4, IL- 6, IL- 10;
- Immunoglobulins: IgA, IgG, IgM, and total IgE;
- Lymphocyte counts: CD3+, CD4+, CD8+, CD16+,CD19+, CD56+.
- Time of SARS-CoV-2 clearance [ Time Frame: 1-28 days ]Time of SARS-CoV-2 test turns negative
- Blood test [ Time Frame: 1-28 days ]Blood cell count and classification
- SPO2 [ Time Frame: 1-28 days ]Pulse oximetry
- RR [ Time Frame: 1-28 days ]Respiratory rate
- Body temperature [ Time Frame: 1-28 days ]Body temperature
- Side effects in the treatment group [ Time Frame: 1-28 days ]Number of the included patients with hDPSCs-related adverse events, e.g. liver or kidney function failure
- C-reactive protein (mg/L) [ Time Frame: 1-28 days ]C-reactive protein in microgram per litre

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Aged 18-65 years;
- Voluntarily participate in this clinical trial and sign off "informed consent form";
- Diagnosed with severe pneumonia of COVID: respiratory distress, RR >30 times / min; resting oxygen saturation of 93% or less; arterial partial pressure of oxygen / oxygen concentration 300mmHg; SARS-CoV-2 nucleic acid test was positive.
- Chest imaging confirm COVID-19 featured lesions in lung.
Exclusion Criteria:
- Receive any clinical trial drug treatment for COVID-2019 within 30 days before the screening assessment;
- Severe liver disease (e.g., Child Pugh score >=C or AST> 5 times of the upper limit);
- Patients with known severe renal insufficiency (estimated glomerular filtration rate <=30mL / min/1.73 m2) or patients receiving continuous renal replacement therapy, hemodialysis, peritoneal dialysis;
- Co-infection of HIV, hepatitis B, tuberculosis, influenza virus, adenovirus or other respiratory infection viruses;
- Female patients who have no sexual protection in the last 30 days prior to the screening assessment;
- Pregnant or lactating women or women using estrogen contraception;
- Patients who are planning to become pregnant during the study period or within 6 months after the end of the study period;
- Other conditions that the researchers consider not suitable for participating in this clinical trial.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04336254
Contact: Qingsong Ye, PhD,DDS | +8615858242516 | qingsongye@foxmail.com | |
Contact: Chenliang Zhou, PhD | +862788041919 ext 83920 |
China, Hubei | |
Renmin Hospital of Wuhan University (East Campus) | Recruiting |
Wuhan, Hubei, China | |
Contact: Chenliang Zhou, PhD +86 027 88041919 ext 83920 |
Study Chair: | Prof. Qingsong Ye, PhD,DDS | Center for Regenerative Medicine, Renmin Hospital of Wuhan University |
Responsible Party: | Ye Qingsong, Professor, Director, Renmin Hospital of Wuhan University |
ClinicalTrials.gov Identifier: | NCT04336254 |
Other Study ID Numbers: |
2020K-G005 hDPSC-CoVID-2019-02-2020 ( Other Identifier: Renmin Hospital of Wuhan University ) |
First Posted: | April 7, 2020 Key Record Dates |
Last Update Posted: | March 10, 2021 |
Last Verified: | March 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Cronovirus Human Dental Pulp Stem Cells Dental Stem Cell Banking |
COVID-19 Pneumonia, Viral Pneumonia Respiratory Tract Infections Infections Virus Diseases |
Coronavirus Infections Coronaviridae Infections Nidovirales Infections RNA Virus Infections Lung Diseases Respiratory Tract Diseases |