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Tumor Discovery                                             Practice and consideration of master protocol design




            Table 3. (Continued)
            Trial        NCT number   Description    Design       Intervention    Sample size  Primary endpoint
                                      comparative    pragmatic,   Casirivimab+
                                      effectiveness of   randomized trial  Imdevimab
                                      COVID-19-specific           3.  Lilly Bamlanivimab+
                                      multiple monoclonal           Etesevimab
                                      antibodies (mAbs)           4. Sotrovimab
                                      with Emergency Use          5. Bebtelovimab
                                      Authorizations status
            ACTIV [44]   NCT04593940  Platform trial to   Phase 3,   1. Infliximab  1,971 actually   Number of patients
                                      evaluate multiple   randomized,   2. Abatacept  enrolled  that recovered from
                                      investigational agents  triple-blind,   3. Remdesivir    COVID-19
                                      for the treatment of   placebo-controlled  4. Cenicriviroc
                                      moderately or severely  trial
                                      ill patients infected
                                      with SARS-CoV-2
            ACTT [45-48]  NCT04280705  Platform trial to   Phase 3,   1. Remdesivir  1062, 1033, 969,   Time to recovery (by
                         NCT04401579  evaluate the safety   multicenter,   2. Baricitinib  1010 actually   race/ethnicity/sex)
                         NCT04492475  and efficacy of novel   adaptive,   3. Interferon beta-1a  enrolled for
                         NCT04640168  therapeutic agents in  randomized,   4. Dexamethasone  ATCC-1, -2, -3, -4,
                                      hospitalized adults   double-blind,         respectively
                                      diagnosed with   placebo-controlled
                                      COVID-19       trial
            CATCO [49]   NCT04330690  Platform trial to   Phase 3,   1. Artesunate  2,900 planned for   28-day mortality
                                      compare multiple   multicenter,   2. Imatinib  whole study  Clinical status
                                      agents against the   adaptive,   3. Infliximab           Respiratory support
                                      currently available   randomized,   4. ARBs
                                      standard of care   open-label,   5. Dexamethasone
                                      in adults admitted   controlled trial  6. LSALT Peptide
                                      to participating
                                      hospitals with
                                      laboratory-confirmed
                                      SARS-CoV-2
                                      infection
            DisCoVeRy [50]  NCT04315948  Platform trial to   Phase 3,   1. Remdesivir  2,416 planned for   Percentage of subjects
                                      evaluate the safety and  multicenter/  2. Lopinavir/ritonavir  whole study  reporting each severity
                                      efficacy of possible   country, adaptive,   3. Interferon Beta-1A  rating on a 7-point
                                      therapeutic agents   randomized, open,  4. Hydroxychloroquine  ordinal scale
                                      in hospitalized adult   or blinded  5. AZD7442
                                      patients diagnosed
                                      with COVID-19
            SARS-CoV-2: Severe acute respiratory syndrome coronavirus 2

            6. Master protocol trials in other fields          and familial disease therapies targets specific genetic
                                                               mutations. In practice, this process may include multiple
            Besides, there are also some master protocol trials focusing   therapies targeting multiple genetic mutations. Platform
            on other disease domains. Herein, we summarize several   trials can lighten the complexity of this process by
            kinds of  diseases which may benefit a lot from master
            protocols, including hereditary and familial diseases, rare   providing substantial flexibility, such as introducing new
            diseases, emerging infectious diseases, and in some drugs   therapies to avoid undertaking other trials. For example,
            like Traditional Chinese Medicine (TCM), and establish   there is a type of early-onset Alzheimer’s disease caused
            the critical information of these trials in Table 4.  by a genetic mutation, and a platform trial named
                                                               DIAN-TU evaluates potential treatments targeting this
            6.1. Hereditary and familial diseases              genetic mutation in patients at risk for or with this familial

            Hereditary and familial diseases are hereditary, which   disease.  Treatments  of  solanezumab  and  gantenerumab
            reside in a genetic mutation, and may pass on from one   are  currently  under  study,  and  additional  therapies  are
                                                                     [51]
            generation to the next. The development of hereditary   planned .


            Volume 2 Issue 2 (2023)                         12                          https://doi.org/10.36922/td.342
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