Updated May 2026 · ClinicalTrials.gov
Proactive TDM Versus Standard Use of Biologics in Psoriasis
Proactive Therapeutic Drug Monitoring Versus Routine Care With the Novel Biologics in Psoriasis : a Pragmatic, Multicentric, Randomised, Controlled Study
Proactive TDM Versus Standard Use of Biologics in Psoriasis (NCT06398106) is a Phase 4 interventional studying Psoriasis Vulgaris, sponsored by University Hospital, Ghent. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.
About This Trial
Biologics are effective agents for the treatment of psoriasis. The newest generation of biologics block interleukin 17 and 23. Physicians always prescribe these drugs in a fixed dose, but this may lead to under- and overdosing in some patients. Underdosing may lead to inadequate response or loss of response over time. Overdosage, on the other hand, can lead to higher risk of side effects and higher costs for the healthcare system. In daily clinical practice, physicians often tackle this real-world issue by blind trial- and- error dose modifications or switching to another biologic. In this study, we want to rationalize these dose modifications and optimize dosing based on the drug concentrations, measured in the blood of the patient (i.e. therapeutic drug monitoring). Depending on the drug concentration, the interval between injections will be lengthened or shortened with the aim to reach the required drug concentration to reach the best clinical result. The trial will be conducted in 14 Belgian hospitals where patients will be divided into 2 study groups: a group that will be advised on the dosing scheme of their biologic based on the measured drug concentration and a group that continues dosing as in daily clinical practice. We will monitor if the clinical response and quality of life remains stable. With this study, we will track drug concentrations as we believe that they can guide dosing of biologics and we hope to achieve better safety, lower healthcare expenses and higher patients' treatment satisfaction while striving for the best clinical response.
What Stage of Research Is This?
Phase 4 studies happen after a treatment has been approved by the FDA. They monitor long-term safety, real-world effectiveness, and any rare side effects that only emerge in larger populations over longer periods. Phase 4 results sometimes lead to label changes, additional warnings, or — rarely — withdrawal of approval.
This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.
Target enrollment of 210 participants puts this in the typical range for a Phase 2-style efficacy study or a moderate Phase 3 trial in a focused Psoriasis Vulgaris subpopulation. At this scale, the study has enough statistical power to detect a clear treatment effect but is not the largest cohort in the field.
Who May Be Eligible (Plain English)
These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.
Original Eligibility Criteria
View original clinical language
Treatments Being Tested
Proactive TDM-based dosing of secukinumab
Maintenance/normal dose is 300 mg/4 weeks or 300 mg/ month First dose reduction step: 300 mg/6 weeks. Second dose reduction step: 300 mg/8 weeks. Further dose reduction steps: prolongation with 1 additional week First dose escalation step: 300 mg/3 weeks Second dose escalation step: 300 mg/2 weeks Further dose escalation step: shortening with 1 additional week
Proactive TDM-based dosing of ixekizumab
Maintenance/normal dose is 80 mg/4 weeks. First dose reduction step: 80 mg/6 weeks. Second dose reduction step: 80 mg/8 weeks Further dose reduction steps: prolongation with 1 additional week First dose escalation step: 80 mg/3 weeks Second dose escalation step: 80 mg/2 weeks Further dose escalation step: shortening with 1 additional week
Proactive TDM-based dosing of guselkumab
Maintenance/normal dose is 100 mg/8 weeks. First dose reduction step: 100 mg/12 weeks. Second dose reduction step: 100 mg/16 weeks. Further dose reduction steps: prolongation with 1 additional week First dose escalation step: 100 mg/6 weeks Second dose escalation step: 100 mg/4 weeks Further dose escalation step: shortening with 1 additional week
Locations (15)
Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.
How to Talk to Your Doctor About This Trial
Bring the printable summary of this trial — including the NCT ID (NCT06398106), the sponsor (University Hospital, Ghent), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.
Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.
Authoritative Sources
The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.
Frequently Asked Questions
What is the NCT06398106 clinical trial studying?
Biologics are effective agents for the treatment of psoriasis. The newest generation of biologics block interleukin 17 and 23. Physicians always prescribe these drugs in a fixed dose, but this may lead to under- and overdosing in some patients. Underdosing may lead to inadequate response or loss of response over time. Overdosage, on the other hand, can lead to higher risk of side effects and higher costs for the healthcare system. In daily clinical practice, physicians often tackle this real-world issue by blind trial- and- error dose modifications or switching to another biologic. In this stu… The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.
Who can participate in NCT06398106?
Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.
How do I contact the trial site for NCT06398106?
Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.
Is participating in a clinical trial safe?
Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.
Where can I verify the data on this page?
Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.
How This Page Is Built
Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.
Source: ClinicalTrials.gov API v2 record for NCT06398106. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT06398106. Data: ClinicalTrials.gov."
Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.
Last updated 2026-05-08 · Data from ClinicalTrials.gov.