Clinical trial Recruiting at 1 site Observational Ages 18 and up

Adjusting guselkumab dosing schedules for adults with plaque psoriasis

Official title: Real-Life Evaluation of Guselkumab Dosing Interval Adjustments. SPAcing-GUS

Run by Centre Hospitalier Universitaire de Nice · NCT07430319 · Data updated 2026-11-12

This project will see if adults with plaque psoriasis who are doing well on guselkumab can safely have their injections spaced farther apart than nine weeks.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment100 (estimated)
SponsorCentre Hospitalier Universitaire de Nice
Academic / other
Drugs / interventionsguselkumab, methotrexate
Locations1 site (Nice, Alpes Maritimes)
StatusRecruiting
StartedOctober 16, 2025
Main results expectedApril 16, 2026
Study endsApril 16, 2026
Registry record updatedFebruary 24, 2026
Trial IDNCT07430319 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with cutaneous plaque psoriasis who are already receiving guselkumab with dosing intervals exceeding nine weeks and who have PASI and/or IGA scores recorded during visits are the ideal candidates.

Probably not a fit

Patients receiving guselkumab mainly for joint involvement, or whose dosing was extended because of surgery, pregnancy, or infection, or who lack PASI/IGA assessments are unlikely to gain useful insights from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is an observational, real-world study of adult patients receiving guselkumab for cutaneous plaque psoriasis, focusing on cases where dosing intervals have already been extended beyond nine weeks. Investigators will collect clinical scores (PASI and IGA) and treatment histories to describe durability of response after interval prolongation and reasons for extension. Patients treated primarily for joint disease or whose extension was driven by surgery, pregnancy, or infection are excluded to keep the analysis focused on dermatologic response. The design builds on prior findings that some "super-responders" can tolerate longer intervals, and aims to document outcomes in routine clinical practice.

Why it matters

Potential benefit: If successful, this work could support less frequent injections for some patients, reducing clinic visits, cost, and treatment burden while maintaining skin control.

How similar studies have gone: The GUIDE trial suggested that "super-responders" could extend guselkumab dosing to 16-week intervals, so this study seeks to document similar interval adjustments in routine care.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* .Adult patients receiving guselkumab for cutaneous psoriasis. 2.
* Guselkumab treatment with dosing intervals exceeding 9 weeks.

Exclusion Criteria:

* Patients receiving guselkumab primarily for joint involvement.
* Patients for whom guselkumab dosing was extended due to surgery, pregnancy, or infection.
* Patients for whom the PASI or IGA score was not assessed during visits

Where it's running

  • CHU de Nice
    Nice, Alpes Maritimes, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.