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Rheumatoid ArthritisPhase 3NCT06887127

A Long-term Extension Clinical Study of TLL-018 in Patients With Rheumatoid Arthritis

A Phase 3 study testing TLL-018 in people with Rheumatoid Arthritis, run by Hangzhou Highlightll Pharmaceutical Co., Ltd at 1 site in China.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial 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. Read more about this study

Who is it for?
Ages 18 to 75 years
Conditions the study is for
Rheumatoid Arthritis
What is being tested?
TLL-018
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
350 participants
Where
1 siteChina
Study dates
10 Mar 2025to 31 Dec 2027
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 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.

Who cannot join

  • 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.

Trial locations and contacts

1 site in 1 country.

China1 site
  • Peking Union Hospital, Chinese Academy of Medical Sciences

    Beijing, Beijing Municipality, 100022

Other trials in China

About this study

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

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.

Read the 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.

Being tested
TLL-018
Medical subject headings
Arthritis, Rheumatoid

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • TLL-018Drug

    TLL-018 20 mg BID for 78 weeks

Study groups in NCT06887127
Study groupRoleWhat they receive
TLL-018ExperimentalParticipants received a two-stage treatment period in Study TLL-018-301, with treatment of 24 weeks of TLL-018 20 mg BID or tofacitinib 5 mg BID in Stage 1. In Stage 2, the participants with tofacitinib who didn't achieve ACR50 were transferred to TLL-018, and other participants maintained the original treatment. Upon completion of Study TLL-018-301, qualified participants can enter the OLE study, and all participants will receive TLL-018 20 mg BID, i.e., 2 tablets of TLL-018 10 mg orally twice daily, for 78 weeks.
Receives: Drug: TLL-018

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of occurrences and Percentage of Participants with AEs and SAEs

    Evaluation includes vital signs, physical examination, ECG examination, laboratory tests, AE, SAE, etc.

    Measured: At Weeks 6, 12, 24, 36, 48, 60, 72, 78

Secondary outcomes (14)
  1. Percentage of Participants With an American College of Rheumatology 50% (ACR50) Response Over Time

    Participants who met the following 3 conditions for improvement from Baseline were classified as meeting the ACR20 response criteria:

    >=50% improvement in 68-tender joint count; >=50% improvement in 66-swollen joint count; >=50% improvement in at least 3 of the 5 following parameters: Physician global assessment of disease activity Patient global assessment of disease activity Patient assessment of pain Health Assessment Questionnaire - Disability Index (HAQ-DI) High-sensitivity C-reactive protein (hsCRP).

    Measured: At Weeks 12, 24, 36, 48, 60, 72, 78

  2. Percentage of Participants With an American College of Rheumatology 20% (ACR20) Response Over Time

    Participants who met the following 3 conditions for improvement from Baseline were classified as meeting the ACR20 response criteria:

    >=20% improvement in 68-tender joint count; >=20% improvement in 66-swollen joint count; >=20% improvement in at least 3 of the 5 following parameters: Physician global assessment of disease activity Patient global assessment of disease activity Patient assessment of pain Health Assessment Questionnaire - Disability Index (HAQ-DI) High-sensitivity C-reactive protein (hsCRP).

    Measured: At Weeks 12, 24, 36, 48, 60, 72, 78

  3. Percentage of Participants With an American College of Rheumatology 70% (ACR70) Response Over Time

    Participants who met the following 3 conditions for improvement from Baseline were classified as meeting the ACR70 response criteria:

    >=70% improvement in 68-tender joint count; >=70% improvement in 66-swollen joint count; >=70% improvement in at least 3 of the 5 following parameters: Physician global assessment of disease activity Patient global assessment of disease activity Patient assessment of pain Health Assessment Questionnaire - Disability Index (HAQ-DI) High-sensitivity C-reactive protein (hsCRP).

    Measured: At Weeks 12, 24, 36, 48, 60, 72, 78

  4. Percentage of Participants Achieving Low Disease Activity (LDA) Based on Disease Activity Score-28 (DAS28[CRP]) Over Time

    Disease Activity Score (DAS) based on a 28 joint count hsCRP consisted of composite numerical score of following variables: tender joint count (TJC28), swollen joint count (SJC28), hsCRP (mg/mL), and participant's global assessment of disease activity. DAS28-hsCRP was calculated using following formula: DAS28-hsCRP equals to (=) 0.56*square root (sqrt) (TJC28) plus (+) 0.28*sqrt (SJC28) + 0.36*natural log(hsCRP+1) + 0.014*participant's global assessment of disease activity + 0.96. Scores ranged 0-9.4, where lower scores indicated less disease activity.

    Measured: At Weeks 12, 24, 36, 48, 60, 72, 78

  5. Percentage of Participants Achieving Clinical Remission (CR) Based on Disease Activity Score-28 (DAS28[CRP]) Over Time

    The DAS28 (CRP) is a composite index used to assess rheumatoid arthritis disease activity, calculated based on the tender joint count (out of 28 evaluated joints), swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity (measured on a VAS from 0-100 mm), and hsCRP (in mg/L). Scores on the DAS28 (CRP) range from 0 to approximately 10, where higher scores indicate more disease activity.

    Clinical remission is defined as a DAS28(CRP) score < 2.6.

    Measured: At Weeks 12, 24, 36, 48, 60, 72, 78

  6. Change From Baseline in Disease Activity Score Based on CRP (DAS28 [CRP]) Over Time

    The disease activity score-28-CRP (DAS28 [CRP]) assesses RA disease activity based on a continuous scale of combined measures of 28 tender joint counts (TJC28), 28 swollen joint counts (SJC28), C-reactive protein (CRP), and the patient global assessment of disease activity (measured on a visual analog scale from 0 to 100 mm). DAS28(CRP) scores range from 0 to approximately 10 where higher scores indicate more disease activity. A negative change from Baseline in DAS28 (CRP) indicates improvement in disease activity.

    Measured: Baseline (of the preceding TLL-018-301 study)and Weeks 12, 24, 36, 48, 60, 72, 78

  7. Change From Baseline in Health Assessment Questionnaire - Disability Index (HAQ-DI) Over Time

    The Health Assessment Questionnaire - Disability Index is a patient-reported questionnaire that measures the degree of difficulty a person has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping, and errands and chores) over the past week. Participants assessed their ability to do each task on a scale from 0 (without any difficulty) to 3 (unable to do). Scores were averaged to provide an overall score ranging from 0 to 3, where 0 represents no disability and 3 represents very severe, high-dependency disability.

    Measured: Baseline (of the preceding TLL-018-301 study)and Weeks 12, 24, 36, 48, 60, 72, 78

  8. Change From Baseline in Clinical Disease Activity Index (CDAI) Over Time

    The clinical disease activity index (CDAI) is a composite index for assessing disease activity based on the summation of the counts of tender joint count (out of 28 evaluated joints) and swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm, and Physician's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm. The total CDAI score ranges from 0 to 78 with higher scores indicating higher disease activity. A negative change from Baseline indicates improvement in disease activity.

    Measured: Baseline (of the preceding TLL-018-301 study)and Weeks 12, 24, 36, 48, 60, 72, 78

  9. Change From Baseline in Simplified Disease Activity Index (SDAI) Over Time

    The simplified disease activity index (SDAI) is a composite index for assessing disease activity based on the summation of the counts of tender joint count (out of 28 evaluated joints) and swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm, Physician's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm and hsCRP (mg/dL). The total SDAI score ranges from 0 to 86 with higher scores indicating higher disease activity. A negative change from Baseline indicates improvement in disease activity.

    Measured: Baseline (of the preceding TLL-018-301 study)and Weeks 12, 24, 36, 48, 60, 72, 78

  10. Change From Baseline in Patient's Assessment of Pain Over Time

    Participants were asked to indicate the severity of their arthritis pain within the previous week on a visual analog scale from 0 to 100 mm. A score of 0 mm indicates "no pain" and a score of 100 mm indicates "worst possible pain."

    Measured: Baseline (of the preceding 301 study)and Weeks 12, 24, 36, 48, 60, 72, 78

  11. Change From Baseline in Patient's Global Assessment of Disease Activity (PtGA) Over Time

    The participant was asked to rate their current RA disease activity over the past 24 hours on a 100 mm VAS, where 0 mm indicates very low disease activity and 100 mm indicates very high disease activity.

    Measured: Baseline (of the preceding TLL-018-301 study)and Weeks 12, 24, 36, 48, 60, 72, 78

  12. Change From Baseline in Physician's Global Assessment of Disease Activity (PGA) Changes From Baseline in SF-36 Score

    The physician rated the participant's current global RA disease activity (independently from the participant's assessment) on a visual analog scale (VAS) from 0 to 100 mm, where 0 mm indicates no disease activity and 100 mm indicates severe disease activity.

    Measured: Baseline (of the preceding TLL-018-301 study)and Weeks 12, 24, 36, 48, 60, 72, 78

  13. Changes From Baseline in SF-36 Score Over Time

    SF-36 score was an evaluation of the functional status for a participant,taping eight health concepts: physical functioning, bodily pain, role limitations due to physical health problems, role limitations due to personal or emotional problems, emotional well-being, social functioning, energy/fatigue, and general health perceptions. Coded numeric values are recoded per the scoring key. All items are scored so that a high score defines a more favorable health state. Each item is scored on a o to 100 range. Items in the same scale are averaged together to create the 8 scale scores.

    Measured: Baseline (of the preceding TLL-018-301 study)and Weeks 24, 48, 78

  14. Changes From Baseline in Morning Stiffness Over Time

    The VAS is a 100 mm line ranging from 0 mm (no morning stiffness) on the left end and 100 mm (worst morning stiffness) on the right end. Subjects marked on the line to indicate their pain severity. The distance in mm was measured from the left end to the subject's marking. Duration of morning stiffness will be from wake-up time to time of resolution of morning stiffness.

    Measured: Baseline (of the preceding TLL-018-301 study)and Weeks 24, 48, 78

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted20 Mar 2025
  2. Study start10 Mar 2025
  3. Primary completion31 Dec 2026 (estimated)
  4. Study completion31 Dec 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
350 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06887127
Sponsor's protocol ID
TLL-018-304
Status last verified
Sep 2026
First submitted
14 Mar 2025
Last updated
25 Sep 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing TLL-018 in people with Rheumatoid Arthritis, run by Hangzhou Highlightll Pharmaceutical Co., Ltd at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 25 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of occurrences and Percentage of Participants with AEs and SAEs (time frame: At Weeks 6, 12, 24, 36, 48, 60, 72, 78). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Sep 2026.

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