A Phase 3 Mechanistic Longitudinal Study to Evaluate the Impact of EARLY Risankizumab Treatment on TRM Cell Levels in Moderate-to-Severe Psoriasis
EU CTIS ID: 2025-521424-30-00
What this study is testing
To determine whether early treatment with risankizumab (within ≤1 year since the onset of psoriasis symptoms) more effectively targets resident memory T cells compared to later treatment (after >10 years since the onset of psoriasis).
- Therapeutic confirmatory (Phase III)
A plain-language read of the study's public EU CTIS listing. The study team confirms the details.
Who can take part
You may be able to join if
- 1. Signed informed consent as described in Appendix 1 which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.
- 2. Participant must be at least 18 years of age at the time of signing the informed consent.
- 3. Participants who have plaque psoriasis candidate for RZB according to EU SmPC5, (a severity of PASI greater than or equal to 5 [PASI ≥5], a static physician global assessment greater than or equal to 3 [sPGA≥3] a Body Surface Area (BSA) affected of more than a 10%, and without diagnosed psoriatic arthritis). Arm 1 (Early treatment Group): Subjects must have new-onset plaque psoriasis, defined as the appearance of the first psoriasis plaques within the last 12 months before inclusion. Additionally, these participants must be naïve to any previous systemic treatment (including phototherapy). Arm 2 (Late treatment Group): Subjects must have plaque psoriasis of more than 10 years of duration at the time of inclusion and must be naïve to any biologic or advanced oral therapy.
- 4. If female, subject must be either postmenopausal or practicing a birth control method described in the protocol
- Laboratory values meeting the following criteria within the screening period prior to the first dose of study drug: • Serum aspartate transaminase (AST) < 2 × ULN; • Serum alanine transaminase (ALT) < 2 × ULN; • Serum direct bilirubin ≤ 2.0 mg/dL; except for subjects with isolated elevation of indirect bilirubin relating to a confirmed diagnosis of Gilbert syndrome; • Total white blood cell (WBC) count > 3,000/μL; • Absolute neutrophil count (ANC) > 1,500/μL; • Platelet count > 100,000/μL; • Hemoglobin > 10.0 g/dL (100 g/L); • Serum Triglycerides < 400 mg/dL; • Estimated glomerular filtration rate by the Chronic Kidney Disease Epidemiology Collaboration equation (eGFR [CKD-EPI]) ≥ 30 mL/min/1.73 m2.
- 5. Participants must demonstrate the ability to adhere to all scheduled study visits and procedures.
You likely can't join if
- 1. Hypersensitivity to the active substance or to any of the excipients of risankizumab.
- 10. History of any documented active or suspected malignancy or history of any malignancy within the last 5 years except for successfully treated non-melanoma skin cancer (NMSC) or localized carcinoma in situ of the cervix.
- 11. Breastfeeding or pregnant women, or women who plan to become pregnant during study period.
- 12. History of clinically significant (per Investigator's judgment) drug or alcohol abuse within the last 6 months.
- 13. History of inflammatory bowel disease or diagnosed psoriatic arthritis.
- 14. History of underlying medical diseases or problems including but not limited to the following: • Subject has been a previous recipient of a solid organ transplant that requires continuous immunosuppression. • Recent (within past 6 months) cerebrovascular accident or myocardial infarction • Evidence of a current or previous disease, medical condition (including chronic alcohol or drug abuse) other than psoriasis, surgical procedure (i.e., organ transplant), medical examination finding (including vital signs and ECG), or laboratory value at the screening visit outside the given range that, in the opinion of the investigator, is clinically significant and would make the study participant unreliable to adhere to the protocol or to complete the trial, compromise the safety of the patient, or compromise the quality of the data. • No major surgery performed within 12 weeks prior to randomization or planned to be performed during the conduct of the trial (e.g., hip replacement, aneurysm removal, stomach ligation) as assessed by the Investigator. • History of suicidal ideation or attempts in the past 6 months.
See the full eligibility criteria
Who can join
- 1. Signed informed consent as described in Appendix 1 which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.
- 2. Participant must be at least 18 years of age at the time of signing the informed consent.
- 3. Participants who have plaque psoriasis candidate for RZB according to EU SmPC5, (a severity of PASI greater than or equal to 5 [PASI ≥5], a static physician global assessment greater than or equal to 3 [sPGA≥3] a Body Surface Area (BSA) affected of more than a 10%, and without diagnosed psoriatic arthritis). Arm 1 (Early treatment Group): Subjects must have new-onset plaque psoriasis, defined as the appearance of the first psoriasis plaques within the last 12 months before inclusion. Additionally, these participants must be naïve to any previous systemic treatment (including phototherapy). Arm 2 (Late treatment Group): Subjects must have plaque psoriasis of more than 10 years of duration at the time of inclusion and must be naïve to any biologic or advanced oral therapy.
- 4. If female, subject must be either postmenopausal or practicing a birth control method described in the protocol
- Laboratory values meeting the following criteria within the screening period prior to the first dose of study drug: • Serum aspartate transaminase (AST) < 2 × ULN; • Serum alanine transaminase (ALT) < 2 × ULN; • Serum direct bilirubin ≤ 2.0 mg/dL; except for subjects with isolated elevation of indirect bilirubin relating to a confirmed diagnosis of Gilbert syndrome; • Total white blood cell (WBC) count > 3,000/μL; • Absolute neutrophil count (ANC) > 1,500/μL; • Platelet count > 100,000/μL; • Hemoglobin > 10.0 g/dL (100 g/L); • Serum Triglycerides < 400 mg/dL; • Estimated glomerular filtration rate by the Chronic Kidney Disease Epidemiology Collaboration equation (eGFR [CKD-EPI]) ≥ 30 mL/min/1.73 m2.
- 5. Participants must demonstrate the ability to adhere to all scheduled study visits and procedures.
What rules you out
- 1. Hypersensitivity to the active substance or to any of the excipients of risankizumab.
- 10. History of any documented active or suspected malignancy or history of any malignancy within the last 5 years except for successfully treated non-melanoma skin cancer (NMSC) or localized carcinoma in situ of the cervix.
- 11. Breastfeeding or pregnant women, or women who plan to become pregnant during study period.
- 12. History of clinically significant (per Investigator's judgment) drug or alcohol abuse within the last 6 months.
- 13. History of inflammatory bowel disease or diagnosed psoriatic arthritis.
- 14. History of underlying medical diseases or problems including but not limited to the following: • Subject has been a previous recipient of a solid organ transplant that requires continuous immunosuppression. • Recent (within past 6 months) cerebrovascular accident or myocardial infarction • Evidence of a current or previous disease, medical condition (including chronic alcohol or drug abuse) other than psoriasis, surgical procedure (i.e., organ transplant), medical examination finding (including vital signs and ECG), or laboratory value at the screening visit outside the given range that, in the opinion of the investigator, is clinically significant and would make the study participant unreliable to adhere to the protocol or to complete the trial, compromise the safety of the patient, or compromise the quality of the data. • No major surgery performed within 12 weeks prior to randomization or planned to be performed during the conduct of the trial (e.g., hip replacement, aneurysm removal, stomach ligation) as assessed by the Investigator. • History of suicidal ideation or attempts in the past 6 months.
- 2. Presence of any concurrent illness, which in the opinion of the investigator, would place the patient at unnecessary safety risk during the trial or interfere with completion of the trial.
- 3. Erythrodermic psoriasis, generalized or localized pustular psoriasis, medication-induced or medication-exacerbated psoriasis, or new onset guttate psoriasis.
- 4. Active skin disease other than psoriasis that could interfere with the assessment of psoriasis.
- 5. Any active infections including HIV, viral hepatitis (hepatitis B, hepatitis C), and/ or active tuberculosis. Subjects with a positive QuantiFERON®-TB /PPD test result may participate in the study if further work up (according to local practice/guidelines) establishes conclusively that the subject has no evidence of active tuberculosis. If the presence of latent tuberculosis is confirmed, then tuberculosis prophylaxis treatment must have been initiated and maintained according to local country guidelines. The patient will not be eligible for randomization if latent tuberculosis is present and is untreated as per local guidelines.
- 6. Treatment with topical medications for psoriasis in the past 2 weeks.
- 7. For arm 2: Treatment with oral systemic classic medications (including phototherapy) for psoriasis in the past 4 weeks or 5 times of half-lives (whichever is longer).
- 8. Received a live vaccine within 6 weeks of start of RZB treatment.
- 9. Participation in any other interventional clinical trial.
The study team makes the final eligibility decision.
Where it's taking place
- Spain
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part, but confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling all sexes, 18-64 years, 65+ years. The study team makes the final eligibility decision.
Where is this trial taking place?
Study sites include Spain. Enter your location above to see the nearest site and check your eligibility.
Explore other conditions
BridgeMD is an information and trial-matching tool that is independent of the study sponsor. Details come from EU CTIS. The study team decides eligibility, and your own doctor gives medical advice.