A Clinical Study to Test Long Term Safety of GLPG1690 for Patients With Systemic Sclerosis

Study Overview
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Brief Summary
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This study was the extension of the double-blind study GLPG1690-CL-204 (NCT03798366). The main purpose of the study was to see how GLPG1690 was tolerated in participants with systemic sclerosis and whether there were any side effects in a long-term treatment period.

Official Title
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A Multicenter, Open-label Extension Study to Evaluate the Long-term Safety, Tolerability and Efficacy of Orally Administered GLPG1690 in Subjects With Systemic Sclerosis

Conditions
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Systemic Sclerosis

Intervention / Treatment
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* Drug: GLPG1690


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female participants who completed the 24-week treatment period of Study GLPG1690-CL-204 and who according to the investigator's judgment may benefit from long-term treatment with GLPG1690. Exclusion Criteria: Any condition or circumstances that, in the opinion of the investigator, may make a participant unlikely or unable to complete the study or comply with study procedures and requirements.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: GLPG1690 600 mg<br>Participants who received GLPG1690 600 milligrams (mg) in the GLPG1690-CL-204 (NCT03798366) study received GLPG1690 600 mg orally once daily up to 91 weeks. | Drug: GLPG1690<br>* film-coated tablets of GLPG1690 to be administered orally<br>|
| Experimental: Placebo<br>Participants who received placebo matched to GLPG1690 in the GLPG1690-CL-204 (NCT03798366) study received GLPG1690 600 mg orally once daily up to 91 weeks. | Drug: GLPG1690<br>* film-coated tablets of GLPG1690 to be administered orally<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious TEAEs | An adverse event (AE) was any untoward medical occurrence in a participant administered study drug and which did not necessarily have a causal relationship with study drug. A treatment-emergent adverse event (TEAE) is any AE with an onset date on or after the start of stud drug intake and no later than 30 days after last dose of study drug, or any worsening of any AE on or after the start of stud drug intake. A serious AE was defined as an AE that resulted in death, was life-threatening, required hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, or was medically significant. Safety analysis set consisted of all randomized participants who received at least 1 dose of investigational product. | Day 1 up to 91 weeks |