A Multicenter, Randomized, Double-Blind, Placebo-Controlled Phase III Clinical Study to Evaluate the Efficacy and Safety of RSS0393 Ointment in Adult Patients With Plaque Psoriasis.

Trial statusNot yet recruiting
Trial phasePhase 3
Trial typeInterventional
Biological sexAll
Age18+
SponsorReistone Biopharma Company Limited

About this trial

Phase III Efficacy and Safety Study of RSS0393 Ointment in Plaque Psoriasis.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Age must be ≥18 years on the day of signing the informed consent form, male or female.

Body Mass Index (BMI = weight [kg] / height² [m²]) ≥18.0 kg/m² at screening.

A history of plaque psoriasis for ≥6 months.

Body Surface Area (BSA) involvement of psoriasis lesions between 2% and 20%, and a Psoriasis Area and Severity Index (PASI) score ≥2, and a Physician's Global Assessment (PGA) score ≥2 at both screening and baseline.

Disqualifiers

Hemoglobin <100.0 g/L (for males) or <90.0 g/L (for females);

White blood cell count <3.0 × 10⁹/L;

Neutrophil count <1.5 × 10⁹/L;

Platelet count <100 × 10⁹/L;

Trial design

Design model

Parallel

Treatments tested in this trial

  • RSS0393 ointment 0.03%

    Drug

    RSS0393 ointment 0.03%

  • RSS0393 ointment placebo

    Drug

    RSS0393 ointment placebo

Treatment groups

600 Participants
are divided into 2 treatment groups
Group A: Treatment group 1: RSS0393 ointment 0.03%Experimental treatment 1 intervention
Group B: Treatment group 2: RSS0393 ointment placeboPlacebo comparator 1 intervention

Trial outcomes

Primary outcomes

1

Achieving a Physician's Global Assessment (PGA) response at Week 8

Time frame
week8

Secondary outcomes

1

The proportion of participants achieving at least a 75% improvement frombaseline in the Psoriasis Area and Severity Index (PASI) score (PASI 75).

Time frame
week54
2

The proportion of participants with a baseline Itch Numerical Rating Scale (Itch-NRS) score ≥4 who achieved an Itch-NRS response (defined as a reduction of ≥4 points from baseline).

Time frame
week54
3

Achieving an Intertriginous Physician's Global Assessment (I-PGA) response in participants with baseline involvement of intertriginous areas and a baseline I-PGA score ≥ 2.

Time frame
week54
4

The proportion of participants achieving a Physician's Global Assessment (PGA) response (score of "clear" or "almost clear") at each of the other scheduled visits.

Time frame
week 54

Other outcomes

Sponsors and contacts

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