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RecruitingNCT06029257Updated Jan 29, 2025

A Study of Tildrakizumab in the Treatment of Genital Psoriasis (CZATCH-Genital-PsO)

An observational study in Genital Psoriasis, sponsored by Almirall, S.A.. Recruiting at 1 site in Austria. Open to participants aged 18 Years to 99 Years. Per ClinicalTrials.gov, last updated 2025-01-29.

Sponsored by Almirall, S.A. · Observational

From the registry’s dates

  • Primary completion was expected by Mar 2026, 7 months ago, but the record still lists the study as recruiting.
  • Started Nov 2023; still recruiting 2 years 10 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
110
Ages
18 Years to 99 Years
Sex
All
01

Study summary

The main aim of this study is to check the safety and effectiveness of tildrakizumab regarding the alleviation of symptoms in the genital area after administration according to the summary of product characteristics (SmPC) and to access overall treatment safety and quality of life assessed on multiple scales.

02

Conditions studied

  • Genital Psoriasis

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Keywords

  • Psoriasis
  • Plaque psoriasis
  • Skin Diseases
  • Tildrakizumab
03

In context

Psoriasis

1,899 studies on the registry are indexed under Psoriasis; 233 are open to participants now.

This study's planned enrollment of 110 is below the median of 200 across 396 observational studies indexed under Psoriasis.

Browse Psoriasis studies →

Lead sponsor

Almirall, S.A. is the lead sponsor of 64 studies on the registry; 8 are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 7 (78%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 99 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Adult male and female psoriasis participants with genital symptoms will be observed in this study.

Inclusion criteria

  • Confirmed diagnosis of psoriasis, with significant involvement of genital regions, i.e., sPGA-G greater than or equal to (>=) 3.
  • Need for systemic biologic therapy based on the local country specific regulations. Tildrakizumab, in accordance with the SmPC, must be the anti-IL23p19 selected therapy before including the patient in the study.
  • Age 18 - 99 years.
  • Informed consent in writing in accordance with applicable country regulations
  • Patient must have plaque psoriasis affecting a body surface area (BSA) >= 1% in a non-genital area at baseline.
  • Patient willing and able to fill out study questionnaires.

Exclusion criteria

Exclusion Criteria:

  • Patient appears to be unwilling or unable to comply with the requirements of the study or who, in the opinion of the investigator, should not participate in the study.
  • Patient exposed to any experimental treatment in the past 3 months prior to baseline.
  • Any condition preventing prescription of Tildrakizumab according to the SmPC, including but not restricted to any contraindication or history of hypersensitivity or intolerance.
  • Patient dependent on the investigator, including but not restricted to employees of the study site.
  • Previous treatment with Tildrakizumab.
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
110 participants (estimated)
Patient registry
No

Groups and cohorts

  • Tildrakizumab

    Participants who have been prescribed tildrakizumab in the treatment of plaque psoriasis with a manifestation in the genital area according to SmPC in routine clinical practice settings will be observed prospectively for up to 52 weeks.

    Drug: Tildrakizumab

Interventions

  • DrugTildrakizumab

    As provided in real-world clinical practice.

    Also known as: Ilumetri®

06

What researchers measure

Primary outcomes

  1. Percentage of Participants Achieving a Static Physician's Global Assessment of Genitalia (sPGA-G) Score of "Clear" (0) or "Almost Clear" (1)

    The sPGA-G is a 5-point score ranging from 0 to 4, with a larger score indicating greater severity, based on the physician's assessment of the average thickness, erythema, and scaling of psoriatic genital lesions.

    Time frame: Baseline up to Week 52

  2. Change From Baseline in Modified Genital Psoriasis Area and Severity Index (mGPASI) Score

    mGPASI determines participants psoriasis severity in the genital region at a given time point yielding an overall score of 0 for no psoriasis to 72 for the most severe disease. Scoring index incorporates the degree of erythema (or redness), induration (or thickness), and scaling) of the genital plaques as well as erosion, fissure, and/or ulcer as a product of the genital area involved.

    Time frame: Baseline up to Week 52

Secondary outcomes

  1. Change From Baseline in Genital Psoriasis Symptoms Scale (GPSS) Score

    The GPSS is a self-reported measure where participants were asked to assess each of their psoriasis symptoms (itch, pain, discomfort, stinging, burning, redness, scaling, and cracking) in the genital area and select a number on a scale of 0-10, where 0 represents no symptoms, and 10 represents the worst imaginable. Each symptom assessment were summed to generate a total GPSS score ranging from 0 (no genital psoriasis symptoms) to 80 (worst imaginable genital psoriasis symptoms).

    Time frame: Baseline, Week 4, 16, 28 and 52

  2. Change From Baseline in Pain, Itch, and Discomfort on Numerical Rating Scales (NRS) for the Genital Region

    Genital region is defined as the labia majora (outer lip), labia minora (inner lip), and perineum (area between vagina and anus) for females; penis, scrotum, and perineum (area between the penis and anus) for males. NRS is the simplest and most commonly used scales to indicate the degree of pain, itch, and discomfort. The numerical scale is most commonly 0 to 10, with 0 being "no pain or Itch or discomfort" and 10 being "the worst imaginable pain or Itch or discomfort".

    Time frame: Baseline, Week 4, 16, 28 and 52

  3. Change From Baseline in the Dermatological Life Quality Index (DLQI) Score

    DLQI is a questionnaire which is to evaluate the impact on participant's quality of life due to psoriasis. It is composed of ten items related to symptoms, feelings, daily activities, leisure, working or studying activities, personal relationships and opinions about dermatological treatment. Each item is scored from 0 (not affected at all) to 3 (very much affected). The DLQI score is the sum of the 10 individual question scores and ranges from 0 to 30, with lower scores indicating better quality of life. The higher the score, the more quality of life is impaired.

    Time frame: Baseline, Week 4, 16, 28 and 52

  4. Change From Baseline in Treatment Satisfaction Questionnaire for Medication (TSQM-9) Score

    The TSQM-9 is a psychometrically robust and validated instrument to assess participants satisfaction with the treatment they are receiving. It is a self-administered questionnaire that measures participants drug therapy satisfaction considering the last two or three weeks or since the last time the participant took the medication. It consists of 9 items distributed in 3 domains: effectiveness, convenience, and global satisfaction, with scores at each domain ranging from 0 to 100. with higher score indicating higher treatment satisfaction.

    Time frame: At Week 28 and 52

  5. Change From Baseline in Genital Psoriasis Sexual Frequency Questionnaire (GenPs-SFQ) Score

    The GenPs-SFQ is a participant reported outcome measure to evaluate the impact of genital psoriasis symptoms on sexual frequency. It consists of 2 items that assess the impact of genital psoriasis symptoms on the frequency of sexual activity. Respondents were asked to answer the questions based on their psoriasis symptoms in the genital area. 2 Items assesses how often genital psoriasis symptoms limited the frequency of sexual activity with the following response options: 0 = never, 1 = rarely, 2 = sometimes, 3 = often, 4 = always.

    Time frame: Baseline, Week 28 and 52

  6. Change from Baseline in Physician's Global Assessment (PGA) Score

    The PGA is an instrument used in clinical trials to rate the severity of psoriasis. It is a 5-point scale measurement ranging from 0 to 4, where 0- clear, 1- almost clear, 2- mild, 3- moderate and 4- severe; based on degree of plaque thickening, scaling and erythema.

    Time frame: Baseline, Week 4, 16, 28 and 52

  7. Change From Baseline in World Health Organisation - 5 Well-Being Index (WHO-5) Score

    The WHO-5 consists of 5-items that measure current mental well-being. Each item is rated on 6-point Likert scale, ranging from 0 (at no the time) to 5 (all of the time). The total raw score, ranging from 0 to 25, is multiplied by 4 to give the final score, with 0 representing the worst imaginable well-being and 100 representing the best imaginable well-being

    Time frame: Baseline, Week 28 and 52

07

Study locations

1 of 1 sites recruiting
  • Medizinische Universität Graz
    Graz, Styria 8020, Austria
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 29, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06029257
Lead sponsor
Almirall, S.A.
Responsible party
Sponsor
First posted
Sep 8, 2023
Start date
Nov 14, 2023
Primary completion
Mar 2026 (estimated)
Completion
Mar 2026 (estimated)
Last update
Jan 29, 2025

Study contacts

Senior Director Regional Medical Affairs
Contact
medicalat@almirall.com
+43 0 15953960

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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