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Extension Study to Evaluate Safety and Efficacy of Jaktinib in Adults With Alopecia Areata (AA)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT05255237
Recruitment Status : Recruiting
First Posted : February 24, 2022
Last Update Posted : December 1, 2022
Information provided by (Responsible Party):
Suzhou Zelgen Biopharmaceuticals Co.,Ltd

Brief Summary:
This study (Unique Protocol ID: ZGJAK020) as an extension of the ongoing "Study to Evaluate Safety and Efficacy of Jaktinib in Adults With Alopecia Areata (Unique Protocol ID:ZGJAK020)" study. After completion of ZGJAK018 study, the study will be directly extend with an "open-label design".

Condition or disease Intervention/treatment Phase
Alopecia Areata Drug: Jaktinib Phase 3

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 210 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Multicenter, Open-Label, Extension Study to Assess the Long-Term Safety and Efficacy of Jaktinib in Adult Patients With Moderate to Severe Alopecia Areata
Actual Study Start Date : March 25, 2022
Estimated Primary Completion Date : June 2023
Estimated Study Completion Date : December 2023

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: Jaktinib
Patients will administer the study product twice per day for 24 weeks, for the safty assessment.
Drug: Jaktinib
75mg BID

Primary Outcome Measures :
  1. Number of subjects reporting treatment-emergent adverse events [ Time Frame: Baseline through week 24 ]
    Patients with treatment-emergent adverse events/all patients *100%

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Subjects voluntarily sign the informed consent form.
  • Patients who participated in ZGJAK018.

Exclusion Criteria:

  • Subjects who are unsuitable to the trial, as identified by the investigator.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05255237

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Contact: Xiaojun Wu +86-0512-57018308 wuxj@zelgen.com

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China, Beijing
11 Xizhimen South Street Recruiting
Beijing, Beijing, China
Sponsors and Collaborators
Suzhou Zelgen Biopharmaceuticals Co.,Ltd
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Principal Investigator: Jianzhong Zhang, PhD Peking University People's Hospital
Principal Investigator: Qianjin Lu, PhD Hospital for skin diseases, Chinese Academy of Medical Sciences
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Responsible Party: Suzhou Zelgen Biopharmaceuticals Co.,Ltd
ClinicalTrials.gov Identifier: NCT05255237    
Other Study ID Numbers: ZGJAK020
First Posted: February 24, 2022    Key Record Dates
Last Update Posted: December 1, 2022
Last Verified: November 2022

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Alopecia Areata
Hair Diseases
Skin Diseases
Pathological Conditions, Anatomical