A Study of GNC-038 Tetra-specific Antibody Injection in Patients With Rheumatoid Arthritis

Sichuan Baili Pharmaceutical

Status and phase: Enrolling; Phase 1

Conditions: Rheumatoid Arthritis

Treatments: Drug: GNC-038; Drug: Placebo

Study type: Interventional

Funder types: Industry

Identifiers

NCT06857227

GNC-038-107

Details and patient eligibility

About

This study is a randomized controlled phase I clinical study with safety, efficacy, and pharmacokinetic/pharmacodynamic characteristics in patients with rheumatoid arthritis.

Full description

This study is divided into a phase Ia study and a phase Ib study. The phase Ib study has a randomized controlled design with a placebo control group. The phase Ia study has a single-arm design, and the phase Ib study will be carried out on the basis of the Phase Ia study.

Enrollment: 54 estimated patients

Sex: All

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Subjects can understand the informed consent form, voluntarily participate in and sign the informed consent form;
2. No gender limit;
3. Age: ≥18 years old and ≤75 years old;
4. Life expectancy greater than 6 months;
5. Patients diagnosed with rheumatoid arthritis according to 1987 or 2010 American College of Rheumatology (ACR)/European League Against Rheumatism (EULAR) classification criteria;
6. Patients were moderately to severely active RA at the time of screening;
7. A stable standard-of-care regimen was maintained for at least 30 days before the first dose;
8. Previous treatment with antirheumatic drugs other than MTX: Leflunomide should be discontinued at least 8 weeks before the start of study treatment or cholestyramine should be used for 14 days;
9. Erythrocyte sedimentation rate (ESR) > 28mm/hr or C-reactive protein (CRP) > 10mg/L;
10. Positive rheumatoid factor and/or anti-cyclic citrullinated peptide antibodies;
11. There were CD19+ B cells in the peripheral blood of the patient;
12. Diagnosis of rheumatoid arthritis (RA) more than 6 months;
13. The organ function level before the first administration met the requirements;
14. Fertile female subjects or male subjects with fertile partners must use highly effective contraception from 7 days before the first dose until 24 weeks after the termination of treatment and should commit not to donate eggs (eggs, oocytes)/sperm for assisted reproduction for 1 year after the last study treatment. Female subjects of childbearing potential must have a negative serum/urine pregnancy test within 7 days before the first dose;
15. Participants were able and willing to comply with protocol-specified visits, treatment plans, laboratory tests, and other study-related procedures.

Exclusion criteria

1. Confirmed diagnosis of another autoimmune rheumatic disease;
2. B cell-targeted therapy agents administered within 6 months before GNC-038 treatment;
3. Received CAR-T therapy within 6 months before GNC-038 treatment;
4. Use of anti-TNF drugs within 8 weeks before administration;
5. Use of any JAK inhibitor within 2 weeks before dosing;
6. Antimalarial drugs, sulfasalazine, penicillamine, etc. were used within 4 weeks before the drug administration;
7. Use of phytochemicals within 4 weeks before administration;
8. The use of other biological agents or other non-B cell depleting clinical investigational drugs before drug administration did not exceed 5 half-lives;
9. Received an intra-articular injection within 4 weeks before study entry;
10. Receipt of any investigational drug within 28 days before dose or within 5 half-lives of the investigational drug;
11. ACR functional class IV or bedridden/wheelchair-bound;
12. History of major organ transplantation or hematopoietic stem cell/bone marrow transplantation;
13. Presence of: 1) active hepatitis B at screening; 2) hepatitis C or HIV infection; 3) syphilis infection;
14. A history of any cardiovascular disease described in the protocol within 6 months before screening;
15. Poorly controlled hypertension (systolic blood pressure > 160 mmHg or diastolic blood pressure > 100 mmHg);
16. Prolonged QT interval at rest (QTcf > 450 msec in men or > 470 msec in women);
17. A history of ≥ grade 2 bleeding within 30 days before screening or the need for long-term continuous anticoagulant therapy;
18. Patients with a history of allergy to recombinant humanized antibodies or to any of the excipients of GNC-038;
19. Women who are pregnant or breastfeeding;
20. Having a history or evidence of suicidal thoughts within 6 months before signing ICF, which is considered by the researcher to be a significant risk of suicide;
21. Diagnosed with malignant tumor within 5 years before signing ICF;
22. Other situations of poor compliance, unwillingness or inability to comply with the study protocol as judged by the investigator;
23. History of splenectomy;
24. Investigators considered a history of alcohol or drug abuse in the 12 months before screening;
25. Any active infection requiring systemic antibiotic treatment within 2 weeks before or during screening;
26. A history of severe and/or disseminated viral infection;
27. Active M. tuberculosis infection may be present.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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54 participants in 2 patient groups, including a placebo group

GNC-038

Experimental group

Description:

Participants receive GNC-038 in the first cycle. Participants with clinical benefit could receive additional treatment for more cycles. The administration will be terminated because of disease progression or intolerable toxicity occurring or other reasons.

Treatment:

Drug: GNC-038

Placebo

Placebo Comparator group

Description:

The control group will be set up in phase Ib, participants will receive placebo.

Treatment:

Drug: Placebo