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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT04517864




Registration number
NCT04517864
Ethics application status
Date submitted
14/08/2020
Date registered
18/08/2020
Date last updated
18/06/2024

Titles & IDs
Public title
PLACEBO-CONTROLLED SAFETY STUDY OF RITLECITINIB (PF-06651600) IN ADULTS WITH ALOPECIA AREATA
Scientific title
A PHASE 2a, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY INVESTIGATING THE SAFETY OF RITLECITINIB (PF-06651600) IN ADULT PARTICIPANTS WITH ALOPECIA AREATA
Secondary ID [1] 0 0
2020-001509-21
Secondary ID [2] 0 0
B7981037
Universal Trial Number (UTN)
Trial acronym
Allegro2a
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Alopecia Areata 0 0
Condition category
Condition code
Inflammatory and Immune System 0 0 0 0
Autoimmune diseases
Skin 0 0 0 0
Other skin conditions

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Drugs - PF-06651600
Treatment: Drugs - Placebo

Experimental: Treatment Arm: PF-06651600 - ritlecitinib 200 milligram (mg) once per day (QD) (four 50 mg tablets) for 4 weeks then ritlecitinib 50 mg tablet QD through month 24. At Month 9, participants assigned to this treatment arm will also receive 3 tablets of placebo for 4 weeks to maintain the blind with the other arm. After month 24, participants switch to 50 mg capsules, 1 QD, up to month 60.

Other: Control Arm (Placebo) followed by active therapy extension - matching comparator: placebo QD (4 tablets x 4 weeks then 1 tablet x 8 months) then ritlecitinib 200 mg QD (four 50 mg tablets) for 4 weeks then ritlecitinib 50 mg tablet QD through month 24. After month 24, participants switch to 50 mg capsules, 1 QD, up to month 60.


Treatment: Drugs: PF-06651600
50 mg tablet, dosed as 200 mg QD or 50 mg QD 50 mg capsule, dosed as 50 mg QD

Treatment: Drugs: Placebo
tablet, dosed as 4 tablets QD or 1 tablet QD
Intervention code [1] 0 0
Treatment: Drugs
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Change From Baseline in I-V Interwave Latency on Brainstem Auditory Evoked Potentials (BAEP) at a Stimulus Intensity of 80 Decibels (dB) From the Right Side at Month 9
Timepoint [1] 0 0
Baseline, Month 9 (Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase)
Primary outcome [2] 0 0
Change From Baseline in I-V Interwave Latency on BAEP at a Stimulus Intensity of 80 dB From the Left Side at Month 9
Timepoint [2] 0 0
Baseline, Month 9 (Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase)
Secondary outcome [1] 0 0
Change From Baseline in I-V Interwave Latency on BAEP at 80 dB From the Right Side at Month 6
Timepoint [1] 0 0
Baseline, Month 6 (Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase)
Secondary outcome [2] 0 0
Change From Baseline in I-V Interwave Latency on BAEP at 80 dB From the Right Side at Month 9E and 15E
Timepoint [2] 0 0
Baseline, Months 9E and 15E (Month 9/15 in the Active Therapy Extension Phase). Baseline was defined as the last non-missing measurement obtained before the first dose in the Placebo-controlled Phase.
Secondary outcome [3] 0 0
Change From Baseline in I-V Interwave Latency on BAEP at 80 dB From the Left Side at Month 6
Timepoint [3] 0 0
Baseline, Month 6 (Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase)
Secondary outcome [4] 0 0
Change From Baseline in I-V Interwave Latency on BAEP at 80 dB From the Left Side at Month 9E and 15E
Timepoint [4] 0 0
Baseline, Month 9E and 15E (Month 9/15 in the Active Therapy Extension Phase). Baseline was defined as the last non-missing measurement obtained before the first dose in the Placebo-controlled Phase.
Secondary outcome [5] 0 0
Change From Baseline in Percentage of Intraepidermal Nerve Fiber (IENF) With Axonal Swelling in Skin Punch Biopsies at Month 9
Timepoint [5] 0 0
Baseline, Month 9 (Month 6 for the 2 participants who entered the Active Therapy Extension Phase at Month 6). Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase.
Secondary outcome [6] 0 0
Change From Baseline in Percentage of IENFs With Axonal Swelling in Skin Punch Biopsies at Month 15E
Timepoint [6] 0 0
Baseline, Month 15E (Month 15 in the Active Therapy Extension Phase). Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase.
Secondary outcome [7] 0 0
Change From Baseline in Intraepidermal Nerve Fiber Density (IENFD) in Skin Punch Biopsies at Month 9
Timepoint [7] 0 0
Baseline, Month 9 (Month 6 for the 2 participants who entered the Active Therapy Extension Phase at Month 6). Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase.
Secondary outcome [8] 0 0
Change From Baseline in IENFD in Skin Punch Biopsies at Month 15E
Timepoint [8] 0 0
Baseline, Month 15E (Month 15 in the Active Therapy Extension Phase). Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase.
Secondary outcome [9] 0 0
Change From Baseline in Amplitude of Wave V on BAEP at a Stimulus Intensity of 80 dB From the Right Side at Month 6 and Month 9
Timepoint [9] 0 0
Baseline, Month 6 and Month 9 (Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase)
Secondary outcome [10] 0 0
Change From Baseline in Amplitude of Wave V on BAEP at a Stimulus Intensity of 80 dB From the Right Side at Month 9E and 15E
Timepoint [10] 0 0
Baseline, Month 9E and 15E (Month 9 and 15 in the Active Therapy Extension Phase). Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase.
Secondary outcome [11] 0 0
Change From Baseline in Amplitude of Wave V on BAEP at a Stimulus Intensity of 80 dB From the Left Side at Month 6 and Month 9
Timepoint [11] 0 0
Baseline, Month 6 and Month 9 (Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase)
Secondary outcome [12] 0 0
Change From Baseline in Amplitude of Wave V on BAEP at a Stimulus Intensity of 80 dB From the Left Side at Month 9E and 15E
Timepoint [12] 0 0
Baseline, Month 9E and 15E (Month 9 and 15 in the Active Therapy Extension Phase). Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase.
Secondary outcome [13] 0 0
Number of Participants With Absence of Wave V on BAEP at Stimulus Intensities Ranging From 80 dB to 40 dB From Right Side up to Month 9
Timepoint [13] 0 0
Baseline, Month 6 and 9 (Baseline was defined as the last non-missing measurement obtained before the first dose in the Placebo-Controlled Phase)
Secondary outcome [14] 0 0
Number of Participants With Absence of Wave V on BAEP at Stimulus Intensities Ranging From 80 dB to 40 dB From Right Side at Baseline, Month 3E, 6E, 9E and 15E
Timepoint [14] 0 0
Baseline, Month 3E, 6E, 9E and 15E (Baseline was defined as the last non-missing measurement obtained before the first dose in the Placebo-Controlled Phase)
Secondary outcome [15] 0 0
Number of Participants With Absence of Wave V on BAEP at Stimulus Intensities Ranging From 80 dB to 40 dB From Left Side up to Month 9
Timepoint [15] 0 0
Baseline, Month 6 and 9 (Baseline was defined as the last non-missing measurement obtained before the first dose in the Placebo-Controlled Phase)
Secondary outcome [16] 0 0
Number of Participants With Absence of Wave V on BAEP at Stimulus Intensities Ranging From 80 dB to 40 dB From Left Side at Baseline, Month 3E, 6E, 9E and 15E
Timepoint [16] 0 0
Baseline, Month 3E, 6E, 9E and 15E (Baseline was defined as the last non-missing measurement obtained before the first dose in the Placebo-Controlled Phase)
Secondary outcome [17] 0 0
Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment-Emergent Serious Adverse Events (TESAEs)
Timepoint [17] 0 0
Approximately 16 months
Secondary outcome [18] 0 0
Number of Participants Who Discontinued From Study Due to Adverse Event (AEs)
Timepoint [18] 0 0
Approximately 16 months
Secondary outcome [19] 0 0
Number of Participants Who Discontinued Study Drug Due to AE and Continued Study
Timepoint [19] 0 0
Approximately 16 months
Secondary outcome [20] 0 0
Number of Participants With Temporary Drug Discontinuation Due to AEs
Timepoint [20] 0 0
Approximately 16 months
Secondary outcome [21] 0 0
Number of Participants With Clinically Significant Abnormalities in Vital Signs
Timepoint [21] 0 0
Approximately 16 months
Secondary outcome [22] 0 0
Number of Participants With Clinically Significant Abnormalities in Clinical Laboratory Values
Timepoint [22] 0 0
Approximately 16 months
Secondary outcome [23] 0 0
Change From Baseline in Overall Severity of Alopecia Tool (SALT) Scores up to Month 9
Timepoint [23] 0 0
Baseline, Months 3, 6 and 9 (Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase)
Secondary outcome [24] 0 0
Change From Baseline in Overall SALT Scores at Month 3E, 6E, 9E, 12E and 15E
Timepoint [24] 0 0
Baseline, Month 3E, 6E, 9E, 12E and 15E (Month 3, 6, 9, 12 and 15 in the Active Therapy Extension Phase). Baseline was defined as the last non-missing measurement obtained before the first dose in the Placebo-Controlled Phase.
Secondary outcome [25] 0 0
Change From Baseline in Alopecia Areata - Severity of Alopecia Tool (AA-SALT) Score up to Month 9
Timepoint [25] 0 0
Baseline, Months 3, 6 and 9 (Baseline was defined as the last non-missing measurement obtained before the first dose in the placebo-controlled phase)
Secondary outcome [26] 0 0
Change From Baseline in AA-SALT Score at Month 3E, 6E, 9E, 12E and 15E
Timepoint [26] 0 0
Baseline, Month 3E, 6E, 9E, 12E and 15E (Baseline was defined as the last non-missing measurement obtained before the first dose in the Placebo-Controlled Phase)
Secondary outcome [27] 0 0
Number of Participants With Patient's Global Impression of Change (PGI-C) Response up to Month 9
Timepoint [27] 0 0
Months 1, 3, 6 and 9
Secondary outcome [28] 0 0
Number of Participants With PGI-C Response at 3E, 6E, 9E, 12E and 15E
Timepoint [28] 0 0
Month 3E, 6E, 9E, 12E and 15E

Eligibility
Key inclusion criteria
* Diagnosis of alopecia areata, including alopecia totalis and alopecia universalis.
* At least 25% hair loss due to alopecia areata
* Must have normal hearing and normal brainstem auditory evoked potentials (BAEPs)
* Must have a normal neurological exam; can have a stable unilateral median neuropathy or ulnar neuropathy
* Signed informed consent
* Stable regimen for other medications before and during the study
Minimum age
18 Years
Maximum age
50 Years
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
* Other significant medical conditions
* Occupational or recreational noise exposure
* History of peripheral neuropathy or first degree relative with a hereditary peripheral neuropathy
* HbA1c > or = 7.5% at Screening
* Recurrent or disseminated Herpes Zoster
* Active or chronic infection; or infection requiring hospitalization or IV antimicrobials within 6 months
* Active or latent (insufficiently treated) Hepatitis
* Active or latent (insufficiently treated) TB
* Concomitant medications associated with peripheral neurologic or hearing loss
* Protocol specific laboratory abnormalities

Study design
Purpose of the study
Other
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s

The people assessing the outcomes
The people analysing the results/data
Intervention assignment
Other
Other design features
Phase
Phase 2
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Stopped early
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
15/09/2020
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
7/05/2024
Sample size
Target
Accrual to date
Final
71
Recruitment in Australia
Recruitment state(s)
NSW,VIC
Recruitment hospital [1] 0 0
Premier Specialists Pty Ltd - Kogarah
Recruitment hospital [2] 0 0
Eastern Health - Box Hill Hospital - Box Hill
Recruitment hospital [3] 0 0
Sinclair Dermatology - East Melbourne
Recruitment postcode(s) [1] 0 0
2217 - Kogarah
Recruitment postcode(s) [2] 0 0
3128 - Box Hill
Recruitment postcode(s) [3] 0 0
3002 - East Melbourne
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
California
Country [2] 0 0
United States of America
State/province [2] 0 0
Florida
Country [3] 0 0
United States of America
State/province [3] 0 0
Illinois
Country [4] 0 0
United States of America
State/province [4] 0 0
Missouri
Country [5] 0 0
United States of America
State/province [5] 0 0
New Mexico
Country [6] 0 0
United States of America
State/province [6] 0 0
New York
Country [7] 0 0
United States of America
State/province [7] 0 0
North Carolina
Country [8] 0 0
United States of America
State/province [8] 0 0
Texas
Country [9] 0 0
United States of America
State/province [9] 0 0
Virginia
Country [10] 0 0
Canada
State/province [10] 0 0
Ontario
Country [11] 0 0
Canada
State/province [11] 0 0
Quebec
Country [12] 0 0
Poland
State/province [12] 0 0
Bialystok
Country [13] 0 0
Poland
State/province [13] 0 0
Katowice
Country [14] 0 0
Poland
State/province [14] 0 0
Krakow
Country [15] 0 0
Poland
State/province [15] 0 0
Ostrowiec Swietokrzyski
Country [16] 0 0
Poland
State/province [16] 0 0
Warszawa
Country [17] 0 0
Poland
State/province [17] 0 0
Wroclaw

Funding & Sponsors
Primary sponsor type
Commercial sector/industry
Name
Pfizer
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
This is a global Phase 2a randomized, double-blind, placebo-controlled study to evaluate the safety and tolerability of ritlecitinib in adults aged 18 to =50 years of age with =25% scalp hair loss due to Alopecia Areata (AA).
Trial website
https://clinicaltrials.gov/study/NCT04517864
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Pfizer CT.gov Call Center
Address 0 0
Pfizer
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/study/NCT04517864