38
Participants
Start Date
December 1, 2024
Primary Completion Date
May 30, 2026
Study Completion Date
May 30, 2026
exosomes derived from human umbilical cord blood mesenchymal stem cells for nasal drop
Exosomes derived from human umbilical cord blood mesenchymal stem cells for nasal drop (administered once daily, twice a week, for a total of two weeks, based on the recommended dose during the dose-escalation phase).
a placebo of exosomes derived from human umbilical cord blood mesenchymal stem cells for nasal drop
Exosomes placebo
RECRUITING
Xuanwu Hospital ,Capital Medical University, Beijing
Shengqi Medical Technology (Guangzhou) Co., Ltd.
UNKNOWN
Viyun (Xiamen) Biomedical Research Institute Co., Ltd.
UNKNOWN
Xuanwu Hospital, Beijing
OTHER