Food Effect Study of DDO-3055 Tablets in Healthy Subjects

- 1. Healthy male volunteers, aged 18~45.

- 2. Body weight ≥ 50 kg, body mass index (BMI) between 18 to 28.

- 3. Hemoglobin is in the normal range.

- 4. Signed informed consent.

- 1. Vital signs, physical examination, laboratory results are abnormal and clinically significant.

- 2. Currently suffering from cardiovascular, liver, kidney, digestive, nervous, blood, thyroid or mental diseases.

- 3. Suspected allergy to the active ingredient or excipient of the experimental drug.

- 4. Have used erythropoietin within 1 month prior to screening or are currently using erythropoietin.

- 5. Had donated blood or blood transfusion within 3 months prior to screening.

- 6. Vein blood collection is difficult or physical condition can not afford blood collection.

- 7. Hepatitis b virus surface antigen (HBsAg), hepatitis c virus antibody (HCVAb), Syphilis antibody, human immunodeficiency virus antibody (HIVAb)were positive.

- 8. Average daily smoking ≥5 cigarettes within 3 months before screening; average daily intake of alcohol within one week is more than 15g (15g alcohol is equivalent to 450mL beer or 150mL wine or 50mL low-alcohol liquor);or 2 days before taking the study drug and during the trial take the tobacco and alcohol and caffeinated foods or drinks, and have special dietary requirements and cannot follow a uniform diet.

- 9. 3 months prior to screening involved in any drug or medical device clinical trials, or within 5 half-life of drugs before screening.

- 10. Any health care products, Over-the-counter drugs or prescription drugs that affects the absorption, distribution, metabolism and excretion of the experimental drug was used within 1 month before the administration.

- 11. With a history of drug abuse or screening visit/baseline visit urine drug abuse screening positive.

- 12. Subjects who are unwilling to take contraceptives or who are likely to donate sperm during the trial and within 30 days after administration; or who do not agree to physical contraception during the trial.

- 13. Other conditions in which the study physician considered the subject not suitable for the trial.