Clinical trial NCT06887127: A Long-term Extension Clinical Study of TLL-018 in Patients With Rheumatoid Arthritis
Official title: An Open-label, Long-term Extension Clinical Study to Evaluate the Safety, Tolerability, and Efficacy of TLL-018 in Patients With Rheumatoid Arthritis
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: PHASE3
Conditions: Rheumatoid Arthritis
Lead sponsor: Hangzhou Highlightll Pharmaceutical Co., Ltd
Sponsor class: INDUSTRY
First posted: 2025-03-20
Enrollment: 350
Sex: ALL
Minimum age (years): 18
Maximum age (years): 75
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: The primary objective of the study is to evaluate the long-term safety, tolerability, and efficacy of TLL-018 in patients with rheumatoid arthritis (RA) who have completed a preceding randomized controlled trial with TLL-018.

Detailed description: This is an open-label extension study to assess the long-term safety, tolerability, and efficacy of TLL-018 in adults with RA who have completed Study TLL-018-301(NCT06020144), a phase 3 randomized controlled trial with TLL-018.

The study includes three parts: screening period, treatment period and follow-up period. All participants will be treated with TLL-018 20 mg twice daily (BID) for 78 weeks.

Safety assessment will be conducted at 6, 12, 24, 36, 48, 60, 72, 78 weeks, including physical examination, collection of vital signs, laboratory tests, AEs, SAEs, etc.

Efficacy evaluation will be performed at weeks 12, 24, 36, 48, 60, 72, and 78, including joint assessment, PGA, PtGA, VAS, HAQ-DI questionnaires, SF-36 scale, morning stiffness assessment, DAS28-hsCRP, CDAI, SDAI, ACR20/50/70 response assessment.

Eligibility criteria: Inclusion Criteria:

* Subjects have completed TLL-018-301 study within 3 months;
* Age (at the time of consent):\>＝18 years of age, \<＝75 years of age;
* Female subjects of childbearing potential (WOCBP), who should not be pregnant or breastfeeding, should not enter the study until after pregnancy testing (e.g., HCG beta subunit-based monitoring);
* All subjects and their partners voluntarily use contraception as deemed effective by the investigator for at least 90 days from the first dose of the investigational drug to the last dose of the investigational drug (Appendix I); no sperm or egg donation is planned by the subject for at least 6 months from the screening period to the last dose of the investigational drug.
* Subjects can understand the informed consent form, volunteer to participate in the study and sign the informed consent form.

Exclusion Criteria:

* Subjects have had severe allergic reaction related to the investigational drug during the TLL-018-301 study;
* Subjects have had herpes zoster, a major cardiovascular event (MACE), thromboembolism, or lymphoproliferative disorders from the time of TLL-018-301 study to the screening of OLE study;
* Subjects have a clinically significant cardiovascular, respiratory, or any other serious and/or non-stable disease, and there is security risk for subjects to participate in this study judged by the investigator;
* Subjects have abnormal and clinically significant laboratory test values at screening;
* Subjects who have taken traditional Chinese medicines, csDMARDs, immunosuppressive drugs, potent opioids, and other JAK inhibitors (except the investigational drugs in TLL-018-301 study) within 1 week before taking the first dose of the investigational drug in OLE study;
* Subjects have treated with flunomide, any bDMARDs, interferon, and other injected immunosuppressive drugs from TLL-018-301 study to the screening of OLE study;
* Subjects who have received any live vaccine within 2 months prior to taking the first dose of the investigational drug or who plan to receive a live vaccine during the study;
* Subjects have had active tuberculosis infection without evidence of clinical cure; have suspected tuberculosis symptoms judged by the investigator; have latent tuberculosis infection (LTBI) but not received preventive treatment regimens within 3 years prior to screening or not completed a course of therapy.

Primary outcomes:
measure: Number of occurrences and Percentage of Participants with AEs and SAEs
timeFrame: At Weeks 6, 12, 24, 36, 48, 60, 72, 78
Secondary outcomes:
measure: Percentage of Participants With an American College of Rheumatology 50% (ACR50) Response Over Time
timeFrame: At Weeks 12, 24, 36, 48, 60, 72, 78
measure: Percentage of Participants With an American College of Rheumatology 20% (ACR20) Response Over Time
timeFrame: At Weeks 12, 24, 36, 48, 60, 72, 78
measure: Percentage of Participants With an American College of Rheumatology 70% (ACR70) Response Over Time
timeFrame: At Weeks 12, 24, 36, 48, 60, 72, 78
measure: Percentage of Participants Achieving Low Disease Activity (LDA) Based on Disease Activity Score-28 (DAS28[CRP]) Over Time
timeFrame: At Weeks 12, 24, 36, 48, 60, 72, 78
measure: Percentage of Participants Achieving Clinical Remission (CR) Based on Disease Activity Score-28 (DAS28[CRP]) Over Time
timeFrame: At Weeks 12, 24, 36, 48, 60, 72, 78
measure: Change From Baseline in Disease Activity Score Based on CRP (DAS28 [CRP]) Over Time
timeFrame: Baseline (of the preceding TLL-018-301 study）and Weeks 12, 24, 36, 48, 60, 72, 78
measure: Change From Baseline in Health Assessment Questionnaire - Disability Index (HAQ-DI) Over Time
timeFrame: Baseline (of the preceding TLL-018-301 study）and Weeks 12, 24, 36, 48, 60, 72, 78
measure: Change From Baseline in Clinical Disease Activity Index (CDAI) Over Time
timeFrame: Baseline (of the preceding TLL-018-301 study）and Weeks 12, 24, 36, 48, 60, 72, 78
measure: Change From Baseline in Simplified Disease Activity Index (SDAI) Over Time
timeFrame: Baseline (of the preceding TLL-018-301 study）and Weeks 12, 24, 36, 48, 60, 72, 78
measure: Change From Baseline in Patient's Assessment of Pain Over Time
timeFrame: Baseline (of the preceding 301 study）and Weeks 12, 24, 36, 48, 60, 72, 78
measure: Change From Baseline in Patient's Global Assessment of Disease Activity (PtGA) Over Time
timeFrame: Baseline (of the preceding TLL-018-301 study）and Weeks 12, 24, 36, 48, 60, 72, 78
measure: Change From Baseline in Physician's Global Assessment of Disease Activity (PGA) Changes From Baseline in SF-36 Score
timeFrame: Baseline (of the preceding TLL-018-301 study）and Weeks 12, 24, 36, 48, 60, 72, 78
measure: Changes From Baseline in SF-36 Score Over Time
timeFrame: Baseline (of the preceding TLL-018-301 study）and Weeks 24, 48, 78
measure: Changes From Baseline in Morning Stiffness Over Time
timeFrame: Baseline (of the preceding TLL-018-301 study）and Weeks 24, 48, 78
Other outcomes:
Locations:
city: Beijing
country: China
facility: Peking Union Hospital, Chinese Academy of Medical Sciences
state: Beijing
Study officials:
References: