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Study Evaluating the Efficacy and Safety of Povorcitinib in Adults With Chronic Spontaneous Urticaria

A Phase 2, Double-Blind, Randomized, Placebo-Controlled, Dose-Ranging, Efficacy, and Safety Study of Povorcitinib in Participants With Chronic Spontaneous Urticaria

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05936567
Enrollment
136
Registered
2023-07-07
Start date
2023-07-31
Completion date
2025-10-09
Last updated
2026-03-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Angioedema, Chronic Idiopathic Urticaria, Chronic Spontaneous Urticaria, Hives, Pruritis, Urticaria

Brief summary

This study is being conducted to evaluate the efficacy and safety of povorcitinib in adults with CSU that is inadequately controlled using SOC treatments.

Interventions

DRUGPovorcitinib

oral; tablet

DRUGPlacebo

oral; tablet

Sponsors

Incyte Corporation
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

Participants are eligible to be included in the study only if all of the following criteria apply: * CSU diagnosis for ≥ 3 months prior to screening. * CSU refractory to second-generation H1 antihistamines * Participants must have been on a stable dose of second-generation H1 antihistamine, and must agree to maintain the stable dose of second-generation H1 antihistamine throughout study. * Willingness and ability to comply with the study Protocol and procedures. * Further inclusion criteria apply

Exclusion criteria

* Treatment with an anti-IgE biologic (eg, omalizumab) within 8 weeks prior to screening. * Clearly defined underlying etiology for chronic urticarias other than CSU * Other cutaneous or systemic diseases with chronic itching or with symptoms of urticaria or angioedema. * Women who are pregnant (or who are considering pregnancy) or breastfeeding. * Concurrent or history of Thrombocytopenia, coagulopathy, or platelet dysfunction, Venous and arterial thrombosis, deep vein thrombosis, pulmonary embolism, stroke, moderate to severe heart failure (NYHA Class III or IV), cerebrovascular accident, MI, coronary stenting, or CABG surgery, other significant cardiovascular diseases or uncontrolled hypertension * Recipient of an organ transplant that requires continued immunosuppression. * Any malignancies or history of malignancies with the exception of adequately treated or excised nonmetastatic basal cell or squamous cell cancer of the skin, or cervical carcinoma in situ. * Chronic or recurrent infectious disease. * Further

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in the Urticaria Activity Score Over 7 Days (UAS7) at Week 12Baseline; Week 12The UAS7 is defined as the 7-day sum of the individual, daily recorded scores for the hive severity score (HSS) and the itch severity score (ISS). The ISS7 is defined as the 7-day sum of the daily ISS scores (ranging from 0 to 3), and the HSS7 is defined as the 7-day sum of the daily HSS scores (ranging from 0 to 3). The UAS7 score is calculated as the sum of the available UAS scores, divided by the number of days that have a UAS score, multiplied by 7. The UAS7 (ranging from 0 to 42) is equal to the ISS7 (ranging from 0 to 21) plus the HSS7 (ranging from 0 to 21). Higher scores represent more intense/severe hives and itching. Change from baseline was calculated as the post-baseline value minus the baseline value.

Secondary

MeasureTime frameDescription
Percentage of Participants Who Achieved UAS7 ≤ 6 (Controlled Disease) at Week 12Week 12The UAS7 is defined as the 7-day sum of the individual, daily recorded scores for the HSS and the ISS. The ISS7 is defined as the 7-day sum of the daily ISS scores (ranging from 0 to 3), and the HSS7 is defined as the 7-day sum of the daily HSS scores (ranging from 0 to 3). The UAS7 score is calculated as the sum of the available UAS scores, divided by the number of days that have a UAS score, multiplied by 7. The UAS7 (ranging from 0 to 42) is equal to the ISS7 (ranging from 0 to 21) plus the HSS7 (ranging from 0 to 21). Higher scores represent more intense/severe hives and itching.
Time to First Achievement of UAS7 ≤ 6 (Controlled Disease) During the Placebo-controlled (PC) Periodup to Week 12The UAS7 is defined as the 7-day sum of the individual, daily recorded scores for the HSS and the ISS. The ISS7 is defined as the 7-day sum of the daily ISS scores (ranging from 0 to 3), and the HSS7 is defined as the 7-day sum of the daily HSS scores (ranging from 0 to 3). The UAS7 score is calculated as the sum of the available UAS scores, divided by the number of days that have a UAS score, multiplied by 7. The UAS7 (ranging from 0 to 42) is equal to the ISS7 (ranging from 0 to 21) plus the HSS7 (ranging from 0 to 21). Higher scores represent more intense/severe hives and itching.
Percentage of Participants With UAS7 = 0 at Week 12Week 12The UAS7 is defined as the 7-day sum of the individual, daily recorded scores for the HSS and the ISS. The ISS7 is defined as the 7-day sum of the daily ISS scores (ranging from 0 to 3), and the HSS7 is defined as the 7-day sum of the daily HSS scores (ranging from 0 to 3). The UAS7 (ranging from 0 to 42) is equal to the ISS7 (ranging from 0 to 21) plus the HSS7 (ranging from 0 to 21). Higher scores represent more intense/severe hives and itching.
Placebo-controlled Period: Number of Participants With Any Treatment-emergent Adverse Event (TEAE)up to Week 12An adverse event (AE) is defined as any untoward medical occurrence associated with the use of a drug in humans, whether or not it is considered drug related. An AE can therefore be any unfavorable or unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of study drug. A TEAE was defined as an AE reported for the first time or the worsening of a pre-existing event after the first dose of study drug and until 60 days after the last dose of study drug.
Extension Period: Number of Participants With Any TEAEfrom Week 12 to Week 44An AE is defined as any untoward medical occurrence associated with the use of a drug in humans, whether or not it is considered drug related. An AE can therefore be any unfavorable or unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of study drug. A TEAE was defined as an AE reported for the first time or the worsening of a pre-existing event after the first dose of study drug and until 60 days after the last dose of study drug.

Countries

Germany, Poland, United States

Participant flow

Pre-assignment details

This study was conducted in 35 sites in Germany, Poland, and the United States.

Baseline characteristics

Characteristic
Age, Continuous40.0 years
STANDARD_DEVIATION 11.77
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
31 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
Race (NIH/OMB)
Asian
2 Participants
Race (NIH/OMB)
Black or African American
2 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
120 Participants
Sex: Female, Male
Female
109 Participants
Sex: Female, Male
Male
8 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
deaths
Total, all-cause mortality
0 / 340 / 330 / 341 / 350 / 90 / 70 / 100 / 290 / 301 / 32
other
Total, other adverse events
8 / 3410 / 3312 / 3417 / 355 / 95 / 74 / 1014 / 2916 / 3017 / 32
serious
Total, serious adverse events
3 / 340 / 330 / 340 / 350 / 90 / 70 / 100 / 290 / 301 / 32

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 13, 2026