A Clinical Trial of TQH3906 Capsules in Adult Patients With Moderate to Severe Plaque Psoriasis

July 21, 2026 updated by: Chia Tai Tianqing Pharmaceutical Group Nanjing Shunxin Pharmaceutical Co., Ltd.

A Randomized, Double-Blind, Parallel-Group, Placebo- and Active-Controlled, Multicenter Phase 3 Clinical Trial to Evaluate the Efficacy and Safety of TQH3906 Capsules in the Treatment of Adult Patients With Moderate to Severe Plaque Psoriasis

This study is a multicenter, randomized, double-blind, placebo- and active-controlled Phase III clinical trial sponsored by Nanjing Shunxin Pharmaceutical Co., Ltd., a subsidiary of Chiatai Tianqing Pharmaceutical Group. The study aims to evaluate the efficacy and safety of once-daily oral TQH3906 capsules (24 mg) in adult participants with moderate to severe plaque psoriasis. TQH3906 is a highly selective TYK2 allosteric inhibitor targeting the JH2 domain, which blocks the IL-23 and Type I interferon inflammatory pathways. Approximately 400 eligible participants aged 18-75 years will be enrolled. Participants will be stratified based on prior biologic use and randomized in a 2:2:1 ratio to the TQH3906 group, the deucravacitinib active control group, or the placebo group. The trial includes a screening period, a 16-week double-blind controlled treatment phase, a 36-week open-label extension phase (during which all participants will receive TQH3906), and a 4-week safety follow-up after the last dose. The co-primary endpoints are the proportion of participants achieving sPGA 0/1 and PASI 90 response at Week 16. Secondary endpoints include improvements in scalp, nail, and palmoplantar psoriasis, Dermatology Life Quality Index (DLQI), long-term safety, and steady-state pharmacokinetic parameters. This study will collect comprehensive efficacy and safety data over 52 weeks to support the New Drug Application (NDA) for TQH3906 for the treatment of plaque psoriasis.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
400

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Beijing Municipality
      • Beijing, Beijing Municipality, China, 100191
        • Peking University Third Hospital
        • Contact:
    • Chongqing Municipality
      • Chongqing, Chongqing Municipality, China, 400010
        • The First Affiliated Hospital of Chongqing Medical University 。
        • Contact:
      • Chongqing, Chongqing Municipality, China, 400011
        • Chongqing Traditional Chinese Medicine Hospital
        • Contact:
    • Guangdong
      • Guangzhou, Guangdong, China, 519041
        • Guangdong Provincial People's Hospital
        • Contact:
      • Guangzhou, Guangdong, China, 510000
        • Dermatology Hospital of Southern Medical University
        • Contact:
      • Shenzhen, Guangdong, China, 518032
        • Shenzhen Second People's Hospital
        • Contact:
    • Guangxi
      • Nanning, Guangxi, China, 530021
        • The First Affiliated Hospital of Guangxi Medical University
        • Contact:
    • Guizhou
      • Guiyang, Guizhou, China, 550002
        • Guizhou Provincial People's Hospital
        • Contact:
          • Xue Chen, Doctor
          • Phone Number: 18685993699
          • Email: cxe911@qq.com
    • Hainan
      • Haikou, Hainan, China, 570100
        • Hainan Fifth People's Hospital
        • Contact:
    • Hebei
      • Chengde, Hebei, China, 067000
        • Affiliated Hospital of Chengde Medical University
        • Contact:
      • Shijiazhuang, Hebei, China, 050000
        • Shijiazhuang Traditional Chinese Medicine Hospital
        • Contact:
    • Heilongjiang
      • Harbin, Heilongjiang, China, 150036
        • Heilongjiang Provincial Hospital
        • Contact:
    • Henan
      • Luoyang, Henan, China, 471099
        • The Second Affiliated Hospital of Henan University of Science and Technology
        • Contact:
      • Puyang, Henan, China, 457001
        • Puyang Oilfield General Hospital
        • Contact:
      • Zhengzhou, Henan, China, 450000
        • Zhengzhou Central Hospital
        • Contact:
      • Zhengzhou, Henan, China, 450004
        • The First Peopel's Hospital of Zhengzhou
        • Contact:
    • Hubei
      • Jingzhou, Hubei, China, 434020
        • Jingzhou Central Hospital
        • Contact:
    • Hunan
      • Changsha, Hunan, China, 410000
        • Xiangya Hospital of Central South University
        • Contact:
      • Changsha, Hunan, China, 410013
        • The Third Xiangya Hospital of Central South University
        • Contact:
    • Inner Mongolia
      • Hohhot, Inner Mongolia, China, 10010
        • Affiliated Hospital of Inner Mongolia Medical University
        • Contact:
          • Xinxiang Lv, Bachelor
          • Phone Number: 13171069661
          • Email: lxx_08@126.com
    • Jiangsu
      • Lianyungang, Jiangsu, China, 222061
        • The First People's Hospital of Lianyungang
        • Contact:
      • Nantong, Jiangsu, China, 215004
        • Nantong Cancer Hospital
        • Contact:
      • Suzhou, Jiangsu, China, 215002
        • Suzhou Municipal Hospital
        • Contact:
      • Zhenjiang, Jiangsu, China, 212008
        • Affiliated Hospital of Jiangsu University
        • Contact:
    • Jilin
      • Changchun, Jilin, China, 130000
        • The Second Hospital of Jilin University
        • Contact:
    • Liaoning
      • Shengyang, Liaoning, China, 110623
        • Zhongyi Northeast International Hospital Co., Ltd.
        • Contact:
      • Shenyang, Liaoning, China, 110002
        • The First Affiliated Hospital of China Medical University
        • Contact:
      • Shenyang, Liaoning, China, 110003
        • Shenyang Seventh People's Hospital (Shenyang Hospital of Integrated Traditional Chinese and Western Medicine, Shenyang Dermatology Hospital)
        • Contact:
    • Qinghai
      • Xining, Qinghai, China, 810000
        • The First People's Hospital of Xining
        • Contact:
    • Shaanxi
      • Xi'an, Shaanxi, China, 710004
        • The Second Affiliated Hospital of Xi'an Jiaotong University
        • Contact:
    • Shandong
      • Dezhou, Shandong, China, 253000
        • Qilu Hospital Dezhou Branch of Shandong University (Dezhou People's Hospital)
        • Contact:
      • Jining, Shandong, China, 272011
        • Jining No.1 People's Hospital
        • Contact:
      • Qingdao, Shandong, China, 266000
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China, 200040
        • Huashan Hospital, Fudan University
        • Contact:
    • Shanxi
      • Changzhi, Shanxi, China, 46000
        • The Second People's Hospital of ChangZhi
        • Contact:
    • Sichuan
      • Suining, Sichuan, China, 629000
        • Suining Central Hospital
        • Contact:
    • The Ningxia Hui Autonomous Region
      • Yinchuan, The Ningxia Hui Autonomous Region, China, 750000
        • Gerneral Hospital of Ningxia Medical Univercity
        • Contact:
    • Tianjin Municipality
      • Tianjin, Tianjin Municipality, China, 300120
        • Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital
        • Contact:
        • Contact:
      • Tianjin, Tianjin Municipality, China, 300110
        • Tianjin First Central Hospital
        • Contact:
    • Yunnan
      • Kunming, Yunnan, China, 650032
        • The First Affiliated Hospital of Kunming Medical University
        • Contact:
    • Zhejiang
      • Jiaxing, Zhejiang, China, 314001
        • Jiaxing First Hospital
        • Contact:
      • Jinhua, Zhejiang, China, 321000
        • Jinhua Municipal Central Hospital
        • Contact:
      • Ningbo, Zhejiang, China, 315020
        • The first affiliated Hospital of Ningbo University
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:1. Participants must be between 18 and 75 years old when signing the informed consent form (ICF), regardless of gender; 2. Confirmed diagnosis of plaque psoriasis for at least 6 months at screenin 3. Disease is stable at screening and baseline visits, and the following criteria are met:

  • Static Physician Global Assessment (sPGA) score ≥3;
  • Psoriasis Area and Severity Index (PASI) score ≥12;
  • Body Surface Area (BSA) affected by psoriasis ≥10%; 4. Deemed by the Investigator as suitable for systemic therapy or phototherapy; 5. Women of childbearing potential must have a negative pregnancy test at screening and baseline visits. Women of childbearing potential and male trial participants whose spouse or partner is a woman of childbearing potential must be willing to use at least one effective method of contraception as specified in the protocol during the study period (from signing the ICF until 30 days after the last dose of investigational drug). Male trial participants must also commit to not donating sperm during the study period and within 30 days after the last dose of study drug; 6. Before initiating any screening or study-specific procedures, trial participants must be able to understand and willing to comply with all protocol requirements, and voluntarily sign and date the ICF.

Exclusion Criteria:1.Presence of non-plaque psoriasis during the Screening period or at the Baseline visit; 2.Past or current diagnosis of drug-induced psoriasis; 3.Concomitant other autoimmune diseases, including but not limited to rheumatoid arthritis, sarcoidosis, and systemic lupus erythematosus; 4.Receiving therapeutic agents for psoriatic arthritis (PsA) other than stable-dose non-steroidal anti-inflammatory drugs (NSAIDs) or analgesics.

5.Prior exposure to TQH3906 Capsules or Deucravacitinib Tablets; 6.Receipt of any of the following medications or treatments within the specified time window:

  1. Any topical agents or treatments that may interfere with psoriasis assessment, administered within 2 weeks before the Baseline visit;
  2. Psoriasis phototherapy administered within 4 weeks before the Baseline visit;
  3. Any biologics or biosimilars thereof, administered within the specified time frame before the Baseline visit;
  4. Systemic non-biologic psoriasis therapy and/or systemic immunosuppressive treatment administered within 4 weeks before the Baseline visit; 5) Within 6 months prior to the baseline visit: Leflunomide; 6) Within 4 weeks prior to the baseline visit: Traditional Chinese medicines (TCM), Chinese proprietary medicines, or herbal preparations used for psoriasis treatment or with unknown composition/nature, including but not limited to Total Glucosides of Paeony, Tripterygium wilfordii preparations, Compound Glycyrrhizin preparations, Compound Qingdai preparations, etc.; 7) Within 4 weeks prior to the baseline visit: Any live vaccines or live-attenuated vaccines; OR anticipated need to receive live vaccines or live-attenuated vaccines during the study period including at least 4 weeks after the last dose of investigational product; 8) Within 3 months prior to the baseline visit (or 5 half-lives, whichever is longer): Investigational biological agent treatment; OR within 30 days prior to the baseline visit (or 5 half-lives, whichever is longer): Any other investigational drug treatment; OR currently participating in other clinical trials; 7. Active infection/history of infection, or receipt of specific anti-infective therapies within the specified time windows; 8. Previous or current presence of severe or unstable diseases or medical conditions involving neurological, cardiovascular, respiratory, digestive, urinary, hematological, or immune systems that, in the Investigator's judgment, may interfere with outcome assessment or affect participation safety 9. Laboratory test abnormalities meeting any of the following criteria during the screening period: 1) Hemoglobin <90.0 g/L; 2) White blood cell count <3.0×10⁹/L; 3) Neutrophil count <1.0×10⁹/L; 4) Lymphocyte count <0.5×10⁹/L; 5) Platelet count <100×10⁹/L; 6) Alanine aminotransferase (ALT) and/or Aspartate aminotransferase (AST) >3× Upper Limit of Normal (ULN); 7) Total bilirubin (TBIL) >1.5× ULN; 8) Estimated creatinine clearance <45 mL/min calculated based on the Cockcroft-Gault formula. (See Appendix 2 for calculation formula); 9) Thyroid-stimulating hormone (TSH) outside the normal reference range, concomitant with free T4 or T3 also outside the normal reference range.

10. History of drug or alcohol abuse within 6 months prior to screening; 11. Known allergy, hypersensitivity, or intolerance to TQH3906 capsules, deucravacitinib tablets, or any excipient ingredients; 12. Women who are pregnant, breastfeeding, or planning to become pregnant during the trial, and men who plan to father children or donate sperm during the trial; 13. Trial participants who are employees of the Sponsor, third-party agency staff, or direct research center staff involved in this study or their family members; 14. Per Investigator assessment, presence of any other medical, psychiatric, or other reasons that render the trial participant unsuitable for participation in this study.

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Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: TQH3906 Capsules + Deucravacitinib tablets placebo
Double-blind phase: TQH3906 capsule 24 mg + deucravacitinib tablet placebo; Open-label extension phase: TQH3906 capsule 24 mg monotherapy.
Drug: TQH3906 capsules
TQH3906 Capsules is an inhibitor that targets tyrosine kinase 2 (TYK2).
Drug: Deucravacitinib tablets placebo
No pharmacologically active substance
Active Comparator: TQH3906 Capsules placebo + Deucravacitinib tablets 6 mg
Double-blind phase: TQH3906 capsule placebo + deucravacitinib tablet 6 mg; Open-label extension phase: TQH3906 capsule 24 mg monotherapy.
Drug: Deucravacitinib tablets 6 mg
Deucravacitinib tablet is an inhibitor that targets tyrosine kinase 2 (TYK2).
Drug: TQH3906 Capsules placebo
No pharmacologically active substance
Placebo Comparator: TQH3906 Capsules placebo + Deucravacitinib tablets placebo
Double-blind phase: TQH3906 capsule placebo + Deucravacitinib tablet placebo; Open-label extension phase: TQH3906 capsule 24 mg monotherapy.
Drug: Deucravacitinib tablets placebo
No pharmacologically active substance
Drug: TQH3906 Capsules placebo
No pharmacologically active substance

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
static Physician's Global Assessment (sPGA)
Time Frame: Baseline up to 16 weeks
Proportion of participants achieving sPGA 0/1 at Week 16, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 16 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 16 weeks
Proportion of participants achieving PASI 90 at Week 16, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 16 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
static Physician's Global Assessment (sPGA)
Time Frame: Baseline up to 16 weeks
Proportion of participants achieving sPGA 0/1 at Week 16, comparing participants using TQH3906 capsules versus Deucravacitinib..
Baseline up to 16 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 16 weeks
Proportion of participants achieving PASI 90 at Week 16, comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 16 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PASI 75 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PASI 75 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PASI 90 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PASI 90 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PASI 100 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PASI 100 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PASI 50 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PASI 50 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Change from baseline in PASI scores and percent change at each assessment visit; comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Change from baseline in PASI scores and percent change at each assessment visit; comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
The proportion of trial participants achieving PASI score < 3 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
The proportion of trial participants achieving PASI score < 3 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
static Physician's Global Assessment (sPGA)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving sPGA 0/1 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
static Physician's Global Assessment (sPGA)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving sPGA 0/1 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib..
Baseline up to 52 weeks
static Physician's Global Assessment (sPGA)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving sPGA 0 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Scalp static Physician's Global Assessment (sPGA)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving sPGA 0 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib..
Baseline up to 52 weeks
Scalp static Physician's Global Assessment (ssPGA)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving ssPGA 0/1 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Scalp static Physician's Global Assessment (ssPGA)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving ssPGA 0/1 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib..
Baseline up to 52 weeks
Palmoplantar Psoriasis Physician Global Assessment (pp-PGA)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving ssPGA 0/1 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Palmoplantar Psoriasis Physician Global Assessment (pp-PGA)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving pp-PGA 0/1 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib..
Baseline up to 52 weeks
Physician's Global Assessment of Fingernail Psoriasis (PGA-F)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PGA-F 0/1 at each assessment visits, comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Physician's Global Assessment of Fingernail Psoriasis (PGA-F)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving PGA-F 0/1 at each assessment visits, comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
Dermatology Life Quality Index (DLQI)
Time Frame: Baseline up to 52 weeks
Change from baseline in Dermatology Life Quality Index (DLQI) at each assessment visit;comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Dermatology Life Quality Index (DLQI)
Time Frame: Baseline up to 52 weeks
Change from baseline in Dermatology Life Quality Index (DLQI) at each assessment visit;comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
Dermatology Life Quality Index (DLQI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving DLQI 0/1 at each assessment visit;comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Dermatology Life Quality Index (DLQI)
Time Frame: Baseline up to 52 weeks
Proportion of participants achieving DLQI 0/1 at each assessment visit;comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
Psoriatic Lesion Body Surface Area (BSA)
Time Frame: Baseline up to 52 weeks
Change from baseline in Psoriatic Lesion Body Surface Area (BSA) at each assessment visit; comparing participants using TQH3906 capsules versus placebo.
Baseline up to 52 weeks
Psoriatic Lesion Body Surface Area (BSA)
Time Frame: Baseline up to 52 weeks
Change from baseline in Psoriatic Lesion Body Surface Area (BSA) at each assessment visit; comparing participants using TQH3906 capsules versus Deucravacitinib.
Baseline up to 52 weeks
Effects on participants' Psoriasis Area and Severity Index (PASI)
Time Frame: Baseline up to 52 weeks
Questionnaire: Psoriasis Area and Severity Index (PASI) total score, range 0-72. The body is divided into 4 regions (head, upper extremities, trunk, lower extremities) weighted by 0.1, 0.2, 0.3, 0.4 respectively. Each region is scored for erythema, induration, desquamation (0-4 each) and lesion area (0-6). Higher scores indicate more severe psoriasis.
Baseline up to 52 weeks
Effects on participants' static Physician's Global Assessment (sPGA)
Time Frame: Baseline up to 52 weeks

Questionnaire: Static Physician's Global Assessment (sPGA) is a single-item static global severity scale (0-4 points) assessing overall psoriasis lesion severity at a single timepoint, based on equal-weighted evaluation of 3 lesion features: erythema, induration, desquamation (each scored 0-4, averaged to final global score).

Scoring grading:

0 = Cleared (no active lesions, residual pigmentation allowed)

  1. = Almost cleared
  2. = Mild
  3. = Moderate
  4. = Severe sPGA 0/1 responder = score 0 or 1 at target visit;
Baseline up to 52 weeks
Effects on participants' Scalp static Physician's Global Assessment (ssPGA)
Time Frame: Baseline up to 52 weeks

Questionnaire: ssPGA is a static 5-point single-item scale (0 to 4) exclusively evaluating scalp psoriatic lesions, comprehensively and equally assessing three lesion features: erythema, plaque induration/thickening, and scaling limited to scalp only.

Scoring grading:

0 = Clear

  1. = Almost clear
  2. = Mild
  3. = Moderate
  4. = Severe
Baseline up to 52 weeks
Effects on participants' Palmoplantar Psoriasis Physician Global Assessment (pp-PGA)
Time Frame: Baseline up to 52 weeks

Questionnaire: Palmoplantar Psoriasis Physician Global Assessment (pp-PGA). is a static single-item 5-point scale (score range 0-4), exclusively evaluating plaque psoriasis lesions limited to palms and soles. Investigators equally assess three core lesion features: erythema, hyperkeratosis/induration, scaling (fissures/pain secondary to plaques are referenced as auxiliary manifestations).

Grading definition:

0 = Clear

  1. = Almost clear
  2. = Mild
  3. = Moderate
  4. = Severe
Baseline up to 52 weeks
Effects on participants' Physician's Global Assessment of Fingernail Psoriasis (PGA-F)
Time Frame: Baseline up to 52 weeks

Questionnaire: Physician's Global Assessment of Fingernail Psoriasis (PGA-F) is a static single-item 5-point scale (score range 0-4), exclusively evaluating psoriatic lesions of all fingernails. Investigators comprehensively assess core nail psoriasis manifestations: nail pitting, onycholysis, subungual hyperkeratosis, splinter hemorrhages, nail discoloration, crumbling.

Grading definition:

0 = Clear

  1. = Almost clear
  2. = Mild
  3. = Moderate
  4. = Severe
Baseline up to 52 weeks
Effects on participants' Dermatology Life Quality Index (DLQI)
Time Frame: Baseline up to 52 weeks
Questionnaire: The Dermatology Life Quality Index (DLQI) is a validated self-administered 10-item patient-reported questionnaire evaluating the impact of skin disease on quality of life over the prior 7 days. The scale covers 6 domains: symptoms & feelings, daily activities, leisure, work/school, personal relationships, treatment burden. Each question is scored 0 (not at all/not relevant) to 3 (very much); total score ranges from 0 to 30. Lower scores indicate less impairment to quality of life.
Baseline up to 52 weeks
Adverse event rate
Time Frame: Baseline up to 56 weeks
The occurrence of all adverse events (AEs), serious adverse events (SAEs) ,Adverse Events of Special Interest (AESIs) and treatment-related adverse events (TEAEs).
Baseline up to 56 weeks
Plasma concentration of TQH3906 at steady state (Cav, SS)
Time Frame: 1 hour Pre-dose of day 1 and 30 minutes Pre-dose of day 29, day 57, day 113, day 225, day 365 during treatment.
The plasma concentration at which the rate of administration and rate of elimination are in equilibrium.
1 hour Pre-dose of day 1 and 30 minutes Pre-dose of day 29, day 57, day 113, day 225, day 365 during treatment.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Chia Tai Tianqing Pharmaceutical Group Nanjing Shunxin Pharmaceutical Co., Ltd.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 21, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 21, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 24, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 24, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 21, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • TQH3906-III-01

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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