- ICH GCP
- Registr klinických studií v USA
- Klinická studie NCT07693959
Neoadjuvant RC48 Plus Gemcitabine in HER2-Expressing MIBC
Neoadjuvant RC48 Plus Gemcitabine for HER2 1~3+ MIBC: A Prospective, Multicenter, Randomized, Controlled, Non-inferiority Study (GUARD-02)
Objectives: To evaluate the non-inferiority of disitamab vedotin plus gemcitabine versus disitamab vedotin plus toripalimab in terms of the pathological complete response (pCR) rate as neoadjuvant therapy for muscle-invasive bladder cancer (MIBC).
This study is designed to evaluate two parallel neoadjuvant treatment strategies followed by definitive local therapy and adjuvant treatment. Eligible patients will be assigned to either the Experimental Arm, receiving neoadjuvant Disitamab Vedotin (RC48) combined with Gemcitabine, or the Active Comparator Arm, receiving neoadjuvant RC48 combined with Toripalimab. Both neoadjuvant regimens are administered every two weeks for 3 to 6 cycles, contingent upon imaging-based tumor response. Following the neoadjuvant phase, patients from both arms will proceed to receive standard Radical Cystectomy (RC) combined with Pelvic Lymph Node Dissection (PLND) within four weeks of their final dose, with a trimodality therapy (TMT) bladder-sparing approach strictly restricted to a selected minority of patients. In the postoperative phase, eligible patients will receive adjuvant therapy consisting of RC48 plus Toripalimab for 6 cycles, followed by Toripalimab maintenance monotherapy for a duration of ≤ 1 year (or a maximum of 1 year).Patients post-RC require abdominopelvic/chest imaging q3-6m; non-RC patients need cystoscopy q3m and abdominopelvic/chest CT q3-6m. Follow-up staff should proactively contact patients q3m to record imaging findings and inquire about hematuria, stomal lesions, cough/chest pain, CNS symptoms, and accurately document recurrence/progression, metastasis, death with dates.
Přehled studie
Postavení
Podmínky
Intervence / Léčba
Typ studie
Zápis (Odhadovaný)
Fáze
- Fáze 3
Kontakty a umístění
Studijní kontakt
- Jméno: Zhiquan Hu, M.D.
- Telefonní číslo: 13971656164
- E-mail: huzhiquan2000@163.com
Studijní místa
-
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Anhui
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Hefei, Anhui, Čína, 230022
- Nábor
- The First Affiliated Hospital of Anhui Medical University
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Kontakt:
- Hanjiang Xu, M.D.
- Telefonní číslo: 18326170623
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Vrchní vyšetřovatel:
- Hanjiang Xu, M.D.
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Fujian
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Fuzhou, Fujian, Čína, 350001
- Nábor
- Fujian Medical University Union Hospital
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Kontakt:
- Shaoxing Zhu, M.D.
- Telefonní číslo: 18758872716
- E-mail: zsxing2005@126.com
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Vrchní vyšetřovatel:
- Shaoxing Zhu, M.D.
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Xiamen, Fujian, Čína, 361003
- Nábor
- The First Affiliated Hospital of Xiamen University
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Vrchní vyšetřovatel:
- Wei Li, M.D.
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Kontakt:
- Wei Li, M.D.
- Telefonní číslo: 13666028912
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Guangdong
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Guangzhou, Guangdong, Čína, 510280
- Nábor
- ZhuJiang Hospital of Southern Medical University
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Kontakt:
- Abai Xu, M.D.
- Telefonní číslo: 18665626790
- E-mail: lc96xab@163.com
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Vrchní vyšetřovatel:
- Abai Xu, M.D.
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Shenzhen, Guangdong, Čína, 518117
- Nábor
- Cancer Hospital Chinese Academy of Medical Sciences, Shenzhen Center
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Kontakt:
- Dongwen Wang, M.D.
- Telefonní číslo: 13530336918
- E-mail: urology2007@126.com
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Vrchní vyšetřovatel:
- Dongwen Wang, M.D.
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Hubei
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Enshi, Hubei, Čína, 445000
- Nábor
- The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture
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Kontakt:
- Su Chen, M.D.
- Telefonní číslo: 13477894099
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Vrchní vyšetřovatel:
- Su Chen, M.D.
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Huanggang, Hubei, Čína, 438000
- Nábor
- Huanggang Central Hospital
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Kontakt:
- Jiayi Tao, M.D.
- Telefonní číslo: 13409868766
- E-mail: 35149051@qq.com
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Vrchní vyšetřovatel:
- Jiayi Tao, M.D.
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Huangshi, Hubei, Čína, 435000
- Nábor
- Huangshi Central Hospital
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Kontakt:
- Dingwen Gui, M.D.
- Telefonní číslo: 13971778131
- E-mail: 68661272@qq.com
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Vrchní vyšetřovatel:
- Dingwen Gui, M.D.
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Jingmen, Hubei, Čína, 448000
- Nábor
- Jingmen Central Hospital
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Kontakt:
- Zeming Liao, M.D.
- Telefonní číslo: 13886919765
- E-mail: lzm19731217@qq.com
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Vrchní vyšetřovatel:
- Zeming Liao, M.D.
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Jingzhou, Hubei, Čína, 434020
- Nábor
- Jingzhou Central Hospital
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Kontakt:
- Yixiang Liao, M.D.
- Telefonní číslo: 18107167675
- E-mail: 25261193@qq.com
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Vrchní vyšetřovatel:
- Yixiang Liao, M.D.
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Jingzhou, Hubei, Čína, 434000
- Nábor
- Jingzhou First People's Hospital
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Kontakt:
- Haitao Dai, M.D.
- Telefonní číslo: 18163138773
- E-mail: 124316578@qq.com
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Vrchní vyšetřovatel:
- Haitao Dai, M.D.
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Shiyan, Hubei, Čína, 442000
- Nábor
- Taihe Hospital
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Kontakt:
- Congbo Chen, M.D.
- Telefonní číslo: 13907204825
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Vrchní vyšetřovatel:
- Congbo Chen, M.D.
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Wuhan, Hubei, Čína, 430071
- Nábor
- Zhongnan Hospital of Wuhan University
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Kontakt:
- Xingyuan Xiao, M.D.
- Telefonní číslo: 18672923313
- E-mail: xiaoxingyuan@whu.edu.cn
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Vrchní vyšetřovatel:
- Xingyuan Xiao, M.D.
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Wuhan, Hubei, Čína, 430060
- Nábor
- Renmin Hospital of Wuhan University
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Kontakt:
- Zhiyuan Chen, M.D.
- Telefonní číslo: 13886000807
- E-mail: chenzhiyuan163@163.com
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Vrchní vyšetřovatel:
- Zhiyuan Chen, M.D.
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Wuhan, Hubei, Čína, 430079
- Nábor
- Hubei Cancer Hospital
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Kontakt:
- Diansheng Cui, M.D.
- Telefonní číslo: 13871549210
- E-mail: 787434798@qq.com
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Vrchní vyšetřovatel:
- Diansheng Cui, M.D.
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Wuhan, Hubei, Čína, 430022
- Nábor
- Wuhan No.1 Hospital
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Kontakt:
- Gaofeng Zhou, M.D.
- Telefonní číslo: 18507134410
- E-mail: 910790776@qq.com
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Vrchní vyšetřovatel:
- Gaofeng Zhou, M.D.
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Wuhan, Hubei, Čína, 430014
- Nábor
- The Central Hospital of Wuhan
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Kontakt:
- Yonglian Guo, M.D.
- Telefonní číslo: 15972152299
- E-mail: 15972152299@139.com
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Vrchní vyšetřovatel:
- Yonglian Guo, M.D.
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Wuhan, Hubei, Čína, 430030
- Nábor
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology
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Kontakt:
- Zhiquan Hu
- Telefonní číslo: 13971656164
- E-mail: huzhiquan2000@163.com
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Vrchní vyšetřovatel:
- Zhiquan Hu, M.D.
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Dílčí vyšetřovatel:
- Chunguang Yang, M.D.
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Dílčí vyšetřovatel:
- Haijun Huang, M.M.
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Xiangyang, Hubei, Čína, 441021
- Nábor
- Xiangyang Central Hospital
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Kontakt:
- Bin chen, M.D.
- Telefonní číslo: 19908671399
- E-mail: 625848080@qq.com
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Vrchní vyšetřovatel:
- Bin Chen, M.D.
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Yichang, Hubei, Čína, 443003
- Nábor
- Yichang Central People's Hospital
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Kontakt:
- Xiaobo Chen, M.D.
- Telefonní číslo: 13972587419
- E-mail: 272899447@qq.com
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Vrchní vyšetřovatel:
- Xiaobo Chen, M.D.
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Jiangxi
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Nanchang, Jiangxi, Čína, 330006
- Nábor
- Jiangxi Provincial People's Hospital
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Kontakt:
- Kehua Jiang, M.D.
- Telefonní číslo: 18571225053
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Vrchní vyšetřovatel:
- Kehua Jiang, M.D.
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Shandong
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Jinan, Shandong, Čína, 250117
- Nábor
- Shandong Cancer Hospital And Institute
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Vrchní vyšetřovatel:
- Jiasheng Bian, M.D.
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Kontakt:
- JiaSheng Bian, M.D.
- Telefonní číslo: 15954104097
- E-mail: sdbjs232466@sina.com
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Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
- Dospělý
- Starší dospělý
Přijímá zdravé dobrovolníky
Popis
Inclusion Criteria:
- Informed Consent & Compliance: Provision of signed informed consent and ability to comply with study procedures and follow-up requirements.
- Age: Age 18 to 75 years (inclusive).
- Planned Surgery: Planned to undergo radical cystectomy (RC) with lymph node dissection (LND).
- Clinical Stage: Clinical stage T2-T4aNxM0, as assessed by CT, MRI, or PET-CT.
- Pathology & Biomarker: Histologically confirmed predominant urothelial carcinoma by cystoscopic biopsy or transurethral resection of bladder tumor (TURBT), with HER2 expression of 1+ to 3+ determined by immunohistochemistry (IHC).
- Performance Status: Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 2.
- Adequate Organ Function: Laboratory values meeting the following criteria: Absolute neutrophil count (ANC) ≥ 1.5 × 10^9/L; Platelet count ≥ 100 × 10^9/L; Hemoglobin ≥ 80 g/L; Total bilirubin ≤ 1.5 × upper limit of normal (ULN); Aspartate aminotransferase (AST), alanine aminotransferase (ALT), and alkaline phosphatase (ALP) ≤ 2.5 × ULN
- Cardiac Function: New York Heart Association (NYHA) class < 3.
- Reproductive Status & Contraception: *Female: Must be surgically sterile, postmenopausal, or agree to use highly effective contraception during the study and for 6 months after the last dose of study treatment. Must not be lactating. *Male: Must agree to use a medically acceptable method of contraception (e.g., condoms, abstinence) during the study and for 6 months after the last dose of study treatment.
Exclusion Criteria:
- Receipt of live attenuated vaccine within 4 weeks prior to enrollment or planned receipt during the study period.
- Receipt of systemic chemotherapy, or anti-PD-1, anti-PD-L1, or HER2-targeted therapy within the past 6 months.
- Known hypersensitivity to gemcitabine, disitamab vedotin, toripalimab, or any of their excipients.
- Active, known, or suspected autoimmune disease.
- Known history of primary immunodeficiency.
- History of allogeneic organ transplantation or allogeneic hematopoietic stem cell transplantation.
- Untreated acute or chronic active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection. (Patients receiving continuous antiviral therapy with monitored viral loads may be eligible at the investigator's discretion).
- Uncontrolled concurrent illness including, but not limited to: human immunodeficiency virus (HIV) infection, active or poorly controlled severe infection, or evidence of uncontrolled systemic disease (e.g., severe psychiatric/neurological disorders, decompensated respiratory failure).
- History of other malignancies within the past 5 years, excluding clinically cured early-stage tumors.
- Active tuberculosis.
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: Randomizované
- Intervenční model: Paralelní přiřazení
- Maskování: Singl
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
|---|---|
|
Experimentální: Experimental Arm (RC48 + Gemcitabine)
Patients in this arm receive neoadjuvant Disitamab Vedotin (RC48) at a dose of 2.0 mg/kg via intravenous (IV) infusion (60-90 minutes) on Day 1, followed by Gemcitabine 1000 mg/m² IV on Day 2. The regimen is administered every 2 weeks (Q2W).
Tumor response is evaluated via imaging after 3 cycles.
Patients who do not achieve a clinical complete response (cCR) will continue the treatment for an additional 3 cycles (totaling 3 to 6 cycles).
|
On Day 2 of each neoadjuvant therapy cycle, a dose of 1000 mg/m² is administered via intravenous infusion.
The regimen is administered every 2 weeks (Q2W).
On Day 1 of each neoadjuvant therapy cycle, a dose of 2 mg/kg is administered via intravenous infusion over 30-60 minutes.
Patients are scheduled to undergo radical cystectomy (RC) within 4 weeks after the last dose of neoadjuvant therapy, and the postoperative specimens will be assessed for pathological response.
|
|
Aktivní komparátor: Active Comparator Arm (RC48 + Toripalimab)
Patients in this arm receive neoadjuvant Disitamab Vedotin (RC48) at a dose of 2.0 mg/kg via IV infusion (60-90 minutes) on Day 1, followed by Toripalimab 3 mg/kg IV on Day 2. The regimen is administered every 2 weeks (Q2W).
Tumor response is evaluated via imaging after 3 cycles, with treatment continuing for a total of 3 to 6 cycles based on the tumor response evaluation.
|
On Day 1 of each neoadjuvant therapy cycle, a dose of 2 mg/kg is administered via intravenous infusion over 30-60 minutes.
Patients are scheduled to undergo radical cystectomy (RC) within 4 weeks after the last dose of neoadjuvant therapy, and the postoperative specimens will be assessed for pathological response.
On Day 2 of each neoadjuvant therapy cycle, a dose of 3 mg/kg is administered via intravenous infusion.
The regimen is administered every 2 weeks (Q2W).
|
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Pathological Complete Response (pCR)
Časové okno: Within 1 week after completion of radical cystectomy.
|
Defined as the absence of residual viable tumor cells (ypT0N0) in RC+PLND specimens.
Assessed post-surgery.
Method: A central pathology review committee performs centralized, blinded independent review of slides from all eligible patients.
Sites ship de-identified slides and clinical forms to a central lab for uniform anonymization, QC, H&E staining, and supplementary IHC if needed.
All materials are fully de-identified, presented in random order without clinical data.
Two senior uropathologists (associate professor level or above) read independently; consensus is final, otherwise a third senior pathologist adjudicates blindly.
ypT and ypN are recorded.
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Within 1 week after completion of radical cystectomy.
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Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Incidence of Grade ≥3 Treatment-Related Adverse Events (TRAEs) During Neoadjuvant Therapy
Časové okno: The period starting from the first administration of neoadjuvant therapy and extending through 4 weeks following the last dose.
|
Defined as the proportion of patients in the safety set experiencing at least one Grade ≥3 TRAE (CTCAE v5.0) during neoadjuvant therapy.
Assessed from the first cycle to 4 weeks after the last cycle, with comprehensive tests each cycle, a scheduled visit 1 week after the last dose of each cycle, and immediate evaluation upon any alert or complaint.
Method: Uniform site training, structured eCRF recording of AE terms, dates, grades, relatedness, actions, outcomes.
An independent Clinical Endpoint Committee (CEC) conducts centralized, blinded review of all Grade ≥3 events for final adjudication.
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The period starting from the first administration of neoadjuvant therapy and extending through 4 weeks following the last dose.
|
Další výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Clinical Complete Response (cCR)
Časové okno: Within 1 week after completion of radical cystectomy.
|
Defined as no clinical evidence of residual tumor in primary and regional nodes after neoadjuvant therapy, assessed hierarchically: surgical patients based on pathological pCR (ypT0/Tis ypN0); non-surgical patients based on imaging CR per RECIST 1.1 (target lesions disappear, nodes <10 mm, no new lesions).
Assessed post-neoadjuvant.
Method: Surgical patients use central pathology review (same as pCR); non-surgical patients use independent imaging review committee blinded to RECIST 1.1.
A CEC reviews all data in blinded fashion, adjudicates cCR per hierarchy, ensuring uniformity.
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Within 1 week after completion of radical cystectomy.
|
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Event-Free Survival (EFS)
Časové okno: From date of first neoadjuvant dose until the date of first documented events above, whichever came first, assessed up to 36 months.
|
Defined as time from neoadjuvant start to first occurrence of: ① disease progression (local/regional recurrence, distant metastasis, or definite clinical progression); ② death from any cause; ③ initiation of new anti-cancer therapy due to progression or toxicity.
Censored at last known event-free assessment.
Assessed at scheduled visits.
Method: A central follow-up unit conducts structured symptom queries; any suspected event triggers medical evaluation.
All potential event materials (imaging, records, symptom logs, death certificates) are submitted to an independent CEC for blinded adjudication of event and date, final for analysis.
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From date of first neoadjuvant dose until the date of first documented events above, whichever came first, assessed up to 36 months.
|
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Overall Survival (OS)
Časové okno: From date of first neoadjuvant dose until the date of death from any cause, assessed up to 36 months.
|
Defined as time from neoadjuvant start to death from any cause.
Assessed at scheduled visits.
Method: Central follow-up unit collects objective death documents from multiple sources.
The independent CEC reviews all documents in a fully blinded manner, verifies and adjudicates the exact date of death, which serves as the final basis for OS calculation.
|
From date of first neoadjuvant dose until the date of death from any cause, assessed up to 36 months.
|
Spolupracovníci a vyšetřovatelé
Sponzor
Spolupracovníci
Publikace a užitečné odkazy
Obecné publikace
- Huang H, Ma W, Zeng X, Liu B, Dai H, Zhou G, Wan J, Zhang Y, Hu Z, Yang C. Efficacy and Safety of Disitamab Vedotin Combined with Gemcitabine as Neoadjuvant Therapy in Muscle-invasive Bladder Cancer: An Open-label, Multicenter, Single-arm, Phase 2 Trial. Eur Urol. 2025 Nov 4:S0302-2838(25)04768-2. doi: 10.1016/j.eururo.2025.10.009. Online ahead of print.
- Sheng X, Yan X, Wang L, Shi Y, Yao X, Luo H, Shi B, Liu J, He Z, Yu G, Ying J, Han W, Hu C, Ling Y, Chi Z, Cui C, Si L, Fang J, Zhou A, Guo J. Open-label, Multicenter, Phase II Study of RC48-ADC, a HER2-Targeting Antibody-Drug Conjugate, in Patients with Locally Advanced or Metastatic Urothelial Carcinoma. Clin Cancer Res. 2021 Jan 1;27(1):43-51. doi: 10.1158/1078-0432.CCR-20-2488. Epub 2020 Oct 27.
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Odhadovaný)
Primární dokončení (Odhadovaný)
Dokončení studie (Odhadovaný)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
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