The Study is to Investigate D-2570 in Participants With Different Levels of Kidney Function.

This study is divided two parts into: Part A and Part B. Part A will recruit 24 research participants, and Part B will recruit 16 research participants.

Inclusion Criteria: * Voluntarily participate in this study after adequate informed consent, sign the written informed consent form, and agree to comply with all procedures specified in the study protocol; * Aged 18 to 70 years (inclusive). Age matching will be conducted between the normal renal function group and the matched renal impairment group with a mean difference within ±10 years; * Male and female participants are eligible. Gender matching will be performed between the normal renal function group and the matched renal impairment group with a difference of no more than 1 subject; * Male participants weigh no less than 50 kg, and female participants weigh no less than 45 kg. Body mass index (BMI) = weight (kg) / height squared (m²), ranging from 19 to 30 kg/m² (inclusive). Weight matching will be conducted between the normal renal function group and the matched renal impairment group with a mean difference within ±10 kg; Exclusion Criteria: * Allergic constitution (e.g., allergy to pollen, two or more types of drugs/foods), or history of atopic diseases such as asthma and urticaria, or known hypersensitivity to the study drug or its excipients; * Positive T-SPOT result at screening. Combined with clinical signs and chest posteroanterior X-ray findings, the participant is judged by the investigator to have active pulmonary tuberculosis;