Sponsor R&D Strategy Adjustment

This study adopts a randomized, double-blind, placebo parallel control design, and is expected to include 168 eligible patients with severe novel coronavirus pneumonia.

Inclusion Criteria:

• 18 years of age, male or female;
• The Participants was diagnosed with novel coronavirus pneumonia;
• It meets the heavy-duty standards of the new coronavirus pneumonia diagnosis and treatment protocol (version 9).
• Participants who voluntarily sign informed consent.
• The National Institute of Allergy and Infectious Diseases Sequential Scale (NIAID-0S) score is 5 or 6;

Exclusion Criteria:

• Participants who cannot take orally, or are suspected to be allergic to Jaktinib, similar drugs or their excipients, or have severe gastrointestinal dysfunction that affects drug absorption;

• Participants who have received the following treatments within the specified time window before randomization:

  1. Participants have received Janus kinase (JAK) inhibitor, interleukin 6 (IL-6) inhibitor, IL-1 inhibitor, tumor necrosis factor (TNF) inhibitor, T cell or B cell depletion agent, interferon and other immunosuppressive drugs within the first two weeks of randomization, except glucocorticoid;
  2. Systematically used CYP 3A4 potent inhibitor or potent inducer in the first five drug half lives at random;

• Immune deficiency;