A Phase 2 interventional study of HB-adMSCs and Placebos in COVID-19, sponsored by Hope Biosciences Research Foundation. Completed at 1 site in United States. Per ClinicalTrials.gov, last updated 2025-09-26.
Sponsored by Hope Biosciences Research Foundation · Phase 2, Interventional, and Prevention
Hope Biosciences is conducting a research study of an investigational product called allogeneic adipose-derived mesenchymal stem cells (abbreviated as HB-adMSCs) to provide immune support against COVID-19. The study purpose is to evaluate the safety and efficacy of five IV infusions of HB-adMSCs in subjects with no signs of COVID-19.
This is a Phase II, Randomized, Placebo-Controlled, Double-Blinded, Clinical Trial to Assess Efficacy of HB-adMSCs to Provide Immune Support Against Coronavirus Disease. 100 patients will be enrolled. Eligible participants are at high or very high exposure risk of contracting COVID-19. The primary endpoint of this study is to provide immune support against COVID-19, measured by the percentage of subjects that develop symptoms of COVID-19. In addition, participants will be monitored for overall clinical status by standard clinical laboratories and inflammatory markers. Participants will complete Short Form Health Survey (SF-36) and depression module (PHQ-9) questionnaires.
7,640 studies on the registry are indexed under COVID-19; 488 are open to participants now.
This study's enrollment of 53 is below the median of 100 across 4,099 interventional studies indexed under COVID-19.
Browse COVID-19 studies →Hope Biosciences Research Foundation is the lead sponsor of 26 studies on the registry; 3 are open to participants now.
Of its 7 completed or terminated interventional studies of FDA-regulated products, 7 (100%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Subjects assigned to this arm will receive 5 intravenous infusions of HB-adMSCs at 200 million cells/dose. Infusions will occur at weeks 0, 2, 6, 10, and 14.
Biological: HB-adMSCs
Subjects assigned to this arm will receive 5 intravenous infusions of HB-adMSCs at 100 million cells/dose. Infusions will occur at weeks 0, 2, 6, 10, and 14.
Biological: HB-adMSCs
Subjects assigned to this arm will receive 5 intravenous infusions of HB-adMSCs at 50 million cells/dose. Infusions will occur at weeks 0, 2, 6, 10, and 14.
Biological: HB-adMSCs
Subjects assigned to this arm will receive 5 intravenous infusions of placebo intervention (saline). Infusions will occur at weeks 0, 2, 6, 10, and 14.
Other: Placebos
Hope Biosciences allogeneic adipose-derived mesenchymal stem cells
Saline
Number of Participants That Were Hospitalized Due to COVID-19 Symptoms
Number of subjects that were hospitalized due to COVID-19 symptoms during the conduct of this study.
Time frame: Week 0 through Week 26 (End of Study)
Number of Participants That Had Symptoms Associated With COVID-19
Number of subjects who experience symptoms defined to be associated with COVID-19, such as fever, shortness of breath/difficulty breathing, cough, etc.
Time frame: Week 0 through Week 26 (End of Study)
Leukocyte Differential Count
Change from baseline in Leukocyte Differential Count
Time frame: Week 0 to Week 26 (End of Study)
C Reactive Protein
Change from baseline in C Reactive Protein
Time frame: Week 0 through Week 26 (End of Study)
Tumor Necrosis Factor - Alpha
Change from baseline in TNF alpha
Time frame: Week 0 through Week 26 (End of Study)
Interleukin 6
Change from baseline in IL-6
Time frame: Week 0 through Week 26 (End of Study)
Interleukin 10
Change from baseline in IL-10
Time frame: Week 0 through Week 26 (End of Study)
Short Form-36 (SF-36)
The Short Form-36 Health Survey is a 36-item, patient-reported survey of patient health. The SF-36 consists of eight scaled scores (including Energy/Fatigue scores, Social Functioning, role limitations due to Physical Health, General Health, Physical Functioning, Pain, Emotional Well-Being, and Emotional Problems) which are the weighted sums of the questions in their section. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. The lower the score the more disability.
Time frame: Week 0 to Week 26 (End of Study)
Patient Health Questionnaire (PHQ-9) Scores
The study used PHQ-9 as a depression module, which scores each of the nine DSM-IV criteria as "0" (not at all) to "3" (nearly every day) to monitor the severity of depression.
Time frame: Week 0 to Week 26 (End of Study)
Selection of subjects was based on the inclusion and exclusion criteria and only those subjects who met all of the inclusion criteria and none of the exclusion criteria, were eligible to participate in the trial. The first participant was enrolled on 05/14/2020 and the last participant was enrolled on 11/04/2020.
| Milestone | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| Started | 19 | 9 | 12 | 13 |
| Completed | 11 | 5 | 9 | 10 |
| Not completed | 8 | 4 | 3 | 3 |
Number of subjects that were hospitalized due to COVID-19 symptoms during the conduct of this study.
| Participants | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| Number of Subjects that were Hospitalized due to COVID-19 Symptoms | 0 | 0 | 0 | 0 |
| Number of Subjects that were not Hospitalized due to COVID-19 Symptoms | 13 | 5 | 10 | 9 |
Number of subjects who experience symptoms defined to be associated with COVID-19, such as fever, shortness of breath/difficulty breathing, cough, etc.
| Participants | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| Number of Subjects with Incidence of COVID-19 Symptoms | 4 | 0 | 0 | 0 |
| Number of Subjects with No Incidence of COVID-19 Symptoms | 9 | 5 | 10 | 9 |
Change from baseline in Leukocyte Differential Count
| Leukocytes (x10^9/L) | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| LSMeans | 6.204 ± 0.296 | 5.518 ± 0.502 | 6.029 ± 0.393 | 5.951 ± 0.392 |
| Change from baseline | 0.508 ± 0.296 | -0.179 ± 0.502 | 0.333 ± 0.393 | 0.255 ± 0.392 |
Change from baseline in C Reactive Protein
| mg/L | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| LSMeans | 2.424 ± 0.632 | 1.759 ± 1.047 | 2.679 ± 0.846 | 2.671 ± 0.843 |
| Change from baseline | -0.609 ± 0.632 | -1.275 ± 1.047 | -0.354 ± 0.846 | -0.362 ± 0.843 |
Change from baseline in TNF alpha
| ng/L | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| LSMeans | 1.175 ± 0.091 | 0.951 ± 0.150 | 1.173 ± 0.123 | 0.996 ± 0.124 |
| Change from baseline | -0.316 ± 0.091 | -0.540 ± 0.150 | -0.318 ± 0.123 | -0.495 ± 0.124 |
Change from baseline in IL-6
| ng/L | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| LSMeans | 1.620 ± 0.040 | 1.620 ± 0.065 | 1.732 ± 0.053 | 1.620 ± 0.056 |
| Change from baseline | -0.019 ± 0.040 | -0.019 ± 0.065 | 0.092 ± 0.053 | -0.019 ± 0.056 |
Change from baseline in IL-10
| ng/L | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| LSMeans | 0.768 ± 0.054 | 0.680 ± 0.089 | 0.680 ± 0.073 | 0.688 ± 0.073 |
| Change from baseline | 0.088 ± 0.054 | 0.000 ± 0.089 | 0.000 ± 0.073 | 0.008 ± 0.073 |
The Short Form-36 Health Survey is a 36-item, patient-reported survey of patient health. The SF-36 consists of eight scaled scores (including Energy/Fatigue scores, Social Functioning, role limitations due to Physical Health, General Health, Physical Functioning, Pain, Emotional Well-Being, and Emotional Problems) which are the weighted sums of the questions in their section. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. The lower the score the more disability.
| Score on a Scale | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| Average Energy/Fatigue | 68.858 ± 5.139 | 78.346 ± 7.672 | 75.849 ± 5.125 | 69.567 ± 5.826 |
| Average Energy/Fatigue - Change from baseline | 7.140 ± 5.139 | 16.628 ± 7.672 | 14.130 ± 5.125 | 7.848 ± 5.826 |
| Average Social Functioning | 98.950 ± 2.190 | 90.711 ± 3.556 | 99.864 ± 2.503 | 98.430 ± 2.484 |
| Average Social Functioning - Change from baseline | 7.153 ± 2.190 | -1.086 ± 3.556 | 8.067 ± 2.503 | 6.633 ± 2.484 |
| Avg. Role Limitations Due to Physical Health | 94.711 ± 2.326 | 100.00 ± 4.393 | 98.727 ± 2.587 | 98.831 ± 2.737 |
| Avg. Role Limitations Due to Physical Health - Change from baseline | 1.742 ± 2.326 | 14.280 ± 4.393 | 5.758 ± 2.587 | 5.862 ± 2.737 |
| Average General Health | 76.481 ± 3.818 | 78.857 ± 6.274 | 81.016 ± 4.196 | 75.518 ± 4.454 |
| Average General Health - Change from baseline | 1.481 ± 3.818 | 3.857 ± 6.274 | 6.016 ± 4.196 | 0.518 ± 4.454 |
| Average Physical Functioning | 92.361 ± 2.660 | 96.806 ± 4.420 | 93.598 ± 2.939 | 89.928 ± 3.123 |
| Average Physical Functioning - Change from baseline | 1.267 ± 2.660 | 5.712 ± 4.420 | 2.504 ± 2.939 | -1.166 ± 3.123 |
| Average Pain | 90.744 ± 3.746 | 84.700 ± 6.291 | 91.166 ± 4.124 | 79.065 ± 4.377 |
| Average Pain - Change from baseline | 11.212 ± 3.746 | 5.169 ± 6.291 | 11.635 ± 4.124 | -0.466 ± 4.377 |
| Average Emotional Well Being | 87.057 ± 2.566 | 88.413 ± 4.096 | 86.992 ± 2.739 | 84.724 ± 2.863 |
| Average Emotional Well Being - Change from baseline | 4.057 ± 2.566 | 5.413 ± 4.096 | 3.992 ± 2.739 | 1.724 ± 2.863 |
| Avg. Role Limitations Due to Emotional Problems | 99.667 ± 2.334 | 97.000 ± 3.654 | 97.000 ± 2.456 | 97.000 ± 2.601 |
| Avg. Role Limitations Due to Emotional Problems - Change from baseline | 3.833 ± 2.334 | 1.166 ± 3.654 | 1.166 ± 2.456 | 1.166 ± 2.601 |
The study used PHQ-9 as a depression module, which scores each of the nine DSM-IV criteria as "0" (not at all) to "3" (nearly every day) to monitor the severity of depression.
| Score on a Scale | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| LSMeans | 1.373 ± 0.489 | 0.912 ± 0.763 | 1.114 ± 0.456 | 1.517 ± 0.538 |
| Change from baseline | -1.111 ± 0.489 | -1.572 ± 0.763 | -1.370 ± 0.456 | -0.967 ± 0.538 |
Collected over Week 0 through Week 26 (End of Study). Non-serious events are listed at a 0% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Allogeneic HB-adMSCs 200MM | 0/19 (0%) | 0/19 (0%) | 15/19 (78.9%) |
| Allogeneic HB-adMSCs 100MM | 0/9 (0%) | 0/9 (0%) | 5/9 (55.6%) |
| Allogeneic HB-adMSCs 50MM | 0/12 (0%) | 0/12 (0%) | 7/12 (58.3%) |
| Placebo | 0/13 (0%) | 0/13 (0%) | 10/13 (76.9%) |
| Event | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo |
|---|---|---|---|---|
| Muscle fatigueMusculoskeletal and connective tissue disorders | 2/19 | 1/9 | 2/12 | 7/13 |
| Influenza like illnessGeneral disorders | 9/19 | 2/9 | 0/12 | 5/13 |
| HeadacheNervous system disorders | 8/19 | 2/9 | 3/12 | 4/13 |
| MyalgiaMusculoskeletal and connective tissue disorders | 3/19 | 1/9 | 1/12 | 0/13 |
| ArthralgiaMusculoskeletal and connective tissue disorders | 0/19 | 1/9 | 0/12 | 2/13 |
| Pain in extremityMusculoskeletal and connective tissue disorders | 0/19 | 1/9 | 0/12 | 0/13 |
| DizzinessNervous system disorders | 1/19 | 1/9 | 0/12 | 0/13 |
| FatigueGeneral disorders | 1/19 | 1/9 | 0/12 | 0/13 |
| NauseaGastrointestinal disorders | 2/19 | 1/9 | 0/12 | 1/13 |
| Blood pressure increasedInvestigations | 0/19 | 1/9 | 0/12 | 0/13 |
| Age, Continuous(years) | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo | Total |
|---|---|---|---|---|---|
| Mean | 45.8 ± 13.34 | 47.6 ± 9.65 | 43.9 ± 12.38 | 42.8 ± 9.97 | 44.9 ± 11.58 |
| Sex: Female, Male(Participants) | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo | Total |
|---|---|---|---|---|---|
| Female | 10 | 5 | 7 | 8 | 30 |
| Male | 9 | 4 | 5 | 5 | 23 |
| Ethnicity (NIH/OMB)(Participants) | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo | Total |
|---|---|---|---|---|---|
| Hispanic or Latino | 3 | 2 | 2 | 4 | 11 |
| Not Hispanic or Latino | 16 | 7 | 10 | 9 | 42 |
| Unknown or Not Reported | 0 | 0 | 0 | 0 | 0 |
| Race (NIH/OMB)(Participants) | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo | Total |
|---|---|---|---|---|---|
| American Indian or Alaska Native | 0 | 0 | 0 | 0 | 0 |
| Asian | 3 | 0 | 3 | 2 | 8 |
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 | 0 | 0 |
| Black or African American | 3 | 1 | 2 | 1 | 7 |
| White | 13 | 8 | 7 | 10 | 38 |
| More than one race | 0 | 0 | 0 | 0 | 0 |
| Unknown or Not Reported | 0 | 0 | 0 | 0 | 0 |
| Region of Enrollment(participants) | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo | Total |
|---|---|---|---|---|---|
| United States | 19 | 9 | 12 | 13 | 53 |
| Height(cm) | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo | Total |
|---|---|---|---|---|---|
| Mean | 172.05 ± 10.18 | 167.35 ± 11.60 | 168.38 ± 8.70 | 171.54 ± 11.66 | 170.30 ± 10.39 |
| Body Weight(kg) | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo | Total |
|---|---|---|---|---|---|
| Mean | 93.132 ± 29.12 | 85.982 ± 26.72 | 78.662 ± 14.69 | 79.763 ± 23.51 | 85.362 ± 24.84 |
| BMI(kg/m^2) | Allogeneic HB-adMSCs 200MM | Allogeneic HB-adMSCs 100MM | Allogeneic HB-adMSCs 50MM | Placebo | Total |
|---|---|---|---|---|---|
| Mean | 31.14 ± 8.426 | 30.18 ± 6.271 | 27.61 ± 3.946 | 26.83 ± 6.606 | 29.12 ± 6.893 |
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