This study is a randomized, parallel, open-label Phase I clinical trial aimed at comparing the bioavailability and safety of different specifications of SHR-3167 injection, with healthy subjects as the research subjects.
Male or female: 18 years old to 55 years old (on the day of signing the informed consent form).
For healthy subjects, the body mass index (BMI) should be between 19.0 kg/m² and 26.0 kg/m², and the weight of men should be ≥ 50 kg and that of women ≥ 45 kg.
Those who show no abnormalities through physical examination, vital signs, 12-lead electrocardiogram, frontal and lateral chest radiographs and laboratory tests, or have minor abnormalities but are judged by the researcher to have no clinical significance.
Female subjects of childbearing potential or male subjects whose partners are of childbearing potential must have no plans for conception or sperm/egg donation from the time of signing the informed consent form until 4 months after the last dose, and must voluntarily refrain from unprotected sexual activity within 14 days before the screening period and use effective contraceptive measures (including partners) during the study period; female subjects of childbearing potential must have no unprotected sexual activity in the past 14 days, have a negative pregnancy test during the screening period, and not be in the lactation period.
Those with a history of frequent allergies or allergic diseases, or those who, as judged by the researcher, may be allergic to the study drug or its components or foods, etc.
Those who have previously suffered from respiratory system, circulatory system, digestive system, urinary system, mental, nervous system, blood system, endocrine system, immune system or malignant tumor diseases, and who, based on the investigator's judgment, are not suitable to participate in this trial.
Exclude those who had severe infections, severe injuries or surgeries within the previous 12 weeks, or those who plan to undergo surgery during the trial.
Exclude those who have participated in any clinical trials of other drugs or medical devices within the previous 3 months prior to screening, or those who are still within 5 half-lives of the trial drug at the time of screening (whichever is longer).