COVID-19 Clinical Trials and Expanded Access

The aim of this study is to determine the impact of systemic immunosuppression onsustained antibody COVID-19 concentrations in patients with IBD who received a COVID-19vaccine.

Acute treatment of COVID-ARDS with direct topical lung instilled T3 therapy for patientson mechanical ventilation.

This is a phase 1/2a study including 2 parts, phase 1 and phase 2a. The phase 1 part isan open-label, single-arm, dose-escalating study to evaluate the safety and explore thedose limiting toxicity and maximum tolerated dose of a human umbilical cord derivedmesenchymal stem cell product (BX-U001) in severe COVID-19 pneumonia patients with acuterespiratory distress syndrome (ARDS). Qualified subjects after the screening will bedivided into low, medium, or high dose groups to receive a single intravenous infusion ofBX-U001 at the dose of 0.5×10^6, 1.0×10^6, or 1.5×10^6 cells/kg of body weight,respectively. The Phase 2a part is a randomized, placebo-controlled, double-blindclinical trial examining the safety and biological effects of BX-U001 at the appropriatedose selected from phase 1 for severe COVID-19 pneumonia patients with the sameinclusion/exclusion criteria as the phase 1 part.

The purpose of this study is to analyze in depth the relationship of myeloid cellsubpopulations during infection by Severe acute respiratory syndrome coronavirus 2(SARS-Cov2), the virus mediating Covid-19. Myeloid cells include neutrophils, monocytesand dendritic cells, each divided into subpopulations with different functions in immunedefense and immune pathologies.The study is based on the following hypotheses: - Infection and the interferon response to infection may induce hyperactive or immunosuppressive differentiation of myeloid cells, that may be treated by specific inhibitors. - Some myeloid cell subpopulations currently identified in our laboratories might be markers for Covid-19 prognosis. - Alternative receptors may be present on myeloid cells, inducing the cytokine storm, a target for therapy. - The expression of Interferon (IFN) receptor and IFN responding genes on myeloid cells and on respiratory epithelial cells may correlate with prognosis and indicate potential treatment targets. - Interferon responses are known to be skewed during Covid-19, but some IFN subtype polymorphisms may correlate with prognosis and these subtypes migt be supplemented or inhibited for therapy.

This is a phase 2 multi-center, double-blind, randomized, placebo-control clinical trialwith 200 subjects who have never been infected by COVID-19 (SARS-Cov-2 virus screen testnegative, no blood SARS-Cov-2 IgM and IgG antibodies detected during enrollment) followedby a pilot study of 5 subjects to demonstrate the safety of proposed three-dose regimenof autologous AdMSCs infusions. The 100 study subjects who have previously banked theirAdMSCs with Celltex, will receive three doses of autologous AdMSCs (approximately 200million cells) intravenous infusion every three days. The 100 subjects in the controlgroup who have previously banked their AdMSCs with Celltex will not receive any Celltex'sAdMSC therapy but placebo treatments. All subjects are monitored for safety (adverseevents/severe adverse events), COVID-19 symptoms, SARS-Cov-2 virus test, blood SARS-Cov-2IgM and IgG antibodies tests, blood cytokine and inflammatory (CRP, IL_6, IL-10, TNFα)tests and disease severity evaluation for 6 months after the last dose of AdMSC infusionfor the study group and 6 months after the enrollment for the control group.

This is a phase Ⅰ/Ⅱ, single-center, randomized, double-blind, placebo-controlled study,to evaluate the safety, tolerability and immunogenicity of the recombinant COVID-19vaccine (Sf9 cells) in the subjects from healthy aged 6-17 years with immunizationprocedures 0, 21, 42 days and doses (10μg/20μg/40μg).

This is an interventional new drug clinical trial for a Phase 2 randomized, double-blind,and placebo control study using intravenous injection of allogeneic adipose stem cells(Celltex AdMSCs) for subjects with severe COVID-19.

The study is a multicenter, adaptive, randomized, double-blinded and placebo-controlledPhase II/III clinical trial. It will be conducted at selected investigational sitesglobally. The study is comprised of 2 parts.

This single arm, multicenter study provides the pertuzumab and trastuzumab fixed-dosecombination formulation for subcutaneous injection (PH FDC SC) administered at home by ahome health nursing provider for patients with human epidermal growth factor receptor2-positive (HER2+) breast cancer who have completed concurrent chemotherapy withpertuzumab (Perjeta) and trastuzumab (Herceptin) by intravenous administration (P+H IV)and are currently receiving or will be receiving maintenance therapy with P+H IV, PH FDCSC, or trastuzumab SC in the clinic. The main objective is to enable continuity of careduring the COVID-19 pandemic.This study will enroll approximately 200 patients in the United States.Participants with early or metastatic HER2+ breast cancer will be enrolled in this study.Participants with metastatic HER2+ breast cancer will receive treatment every 3 weeks andcontinue treatment unless early cessation is necessary due to disease recurrence, diseaseprogression, unacceptable toxicity, participant withdrawal of consent, or per physician'srecommendation. Participants with early HER2+ breast cancer will receive PH FDC SC tocomplete 1 year (up to 18 cycles) of dual blockade, including the P+H IV, PH FDC SC, ortrastuzumab SC they received prior to enrolling in this study, unless early cessation isnecessary due to disease recurrence, disease progression, unacceptable toxicity,participant withdrawal of consent, or per physician's recommendation.A remote cardiac surveillance substudy will be optional for patients enrolled at selectsites.The Sponsor may decide to terminate the study when the COVID-19 pandemic is no longer arisk for this patient population.

The primary objective of this study is to provide expanded access of remdesivir (RDV) forthe treatment of severe acute respiratory syndrome coronavirus (SARS-CoV2) infection.