Safety and Tolerability of IBI355 in Patients With Primary Sjogren's Syndrome

NCT06484855 | Completed Phase 1

• 1 other identifier: CIBI355A102
• Study Type: interventional
• Target: 30
• Locations: 1 country
• Sites: 1

Brief Summary

This study aims to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of multiple ascending doses of IBI355 in primary Sjogren's syndrome (pSS) patients. This study also aims to evaluate the anti-Drug antibody after multiple ascending doses of IBI355 in pSS patients.

Conditions

Primary Sjögren's Syndrome

Outcome Measures

Primary Outcomes (1)

• Incidence of adverse events and serious adverse events

  up to week 24

Secondary Outcomes (5)

• Area under the Curve(AUC) of multi-dose of IBI355

  Up to week 16

• Peak serum concentration(Cmax) of multi-dose of IBI355

  Up to week 16

• Clearance (CL) of multi-dose of IBI355

  Up to week 16

• Half-life (t1/2) of multi-dose of IBI355

  Up to week 16

• The ratio of Anti-drug antibody of multi-dose of IBI355

  Up to week 24

Study Arms (3)

IBI355 7.5mg/kg

EXPERIMENTAL

IBI355 7.5mg/kg and placebo will be given to the subjects every 4 weeks (8:2)

Drug: IBI355; Drug: IBI355 placebo

IBI355 15mg/kg

EXPERIMENTAL

IBI355 15mg/kg and placebo will be given to the subjects every 4 weeks (8:2)

Drug: IBI355; Drug: IBI355 placebo

IBI355 30mg/kg

EXPERIMENTAL

IBI355 30mg/kg and placebo will be given to the subjects every 4 weeks (8:2)

Drug: IBI355; Drug: IBI355 placebo

Interventions

IBI355 DRUG

IBI355 IV. Q4W

IBI355 15mg/kg; IBI355 30mg/kg; IBI355 7.5mg/kg

IBI355 placebo DRUG

IBI355 placebo IV. Q4W

IBI355 15mg/kg; IBI355 30mg/kg; IBI355 7.5mg/kg

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Understand and sign the informed consent form;
• Age ≥ 18 years, male or female；
• Body Mass Index (BMI) within the range of 18.0 to 28.0 kg/m² (inclusive);
• Meet the 2016 American College of Rheumatology (ACR)/European League Against Rheumatism (EULAR) classification criteria for Sjögren's Syndrome;
• Positive for anti-Sjögren's syndrome A autoantibodies (SSA) and/or anti-Sjögren's syndrome B autoantibodies (SSB);
• Unstimulated whole salivary flow rate \> 0 ml/min;

You may not qualify if:

• Individuals who have had allergic reactions to any components of IBI355, have allergic diseases, or possess an allergic constitution;
• Those who cannot tolerate frequent venipuncture procedures;
• Participants diagnosed with secondary Sjögren's syndrome, or whose clinical symptoms (or laboratory abnormalities) require explanation by another connective tissue disease (such as systemic lupus erythematosus, mixed connective tissue disease, etc.).
• Subjects paticipated in the other clinical trail in 1 month or less than 5 t1/2 since the previous clinical trial (which is longer)；
• Subjects with an infection requiring systemic medication was present within 30 days prior to randomization;
• HIV-Ab、RPR、HCV-Ab、HBV、HBeAg or HBcAb, one of them positive;
• There have a clinical or imaging evidence that the subject with active tuberculosis, or there is evidence that the subject is in the incubation period for tuberculosis;
• Patients with a history of central nervous system, cardiovascular system, digestive system, respiratory system, urinary system, blood system, metabolic disorders and other systemic diseases; 7. Subject with a hcg positive; 8.Patients with a history of neuropsychiatry or who are considered unfit to participate in this clinical trial; 9.Patients with pulmonary interstitial fibrosis, or those requiring combined antifibrotic drug therapy, or those with abnormal lung function that the investigators determined was not suitable for this study; 10. Need to use other drugs that could cause xerostomia during the study.

Sponsors & Collaborators

• Innovent Biologics (Suzhou) Co. Ltd.: lead

Study Sites (1)

The First Affiliated Hospital of University of Science and Technology of China

Hefei, Anhui, 230001, China

Location

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Purpose: TREATMENT
• Intervention Model: SEQUENTIAL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: June 26, 2024
• First Posted: July 3, 2024
• Study Start: July 14, 2024
• Primary Completion: June 21, 2025
• Study Completion: July 25, 2025
• Last Updated: September 15, 2025

Record last verified: 2025-09

Data Sharing

• IPD Sharing: Will not share

Locations

CN (1)