尿路肿瘤DNA引导的全身免疫疗法治疗不可切除的极高危非肌层浸润性膀胱癌

实验性的：学习小组

药品：Systemic immunotherapy

Participants receive systemic immune checkpoint inhibitor-based therapy administered intravenously every 3 weeks for an initial 3 cycles. Treatment response is initially assessed using transurethral resection of bladder tumor (TURBT) to evaluate pathologic stage. Participants without progression to muscle-invasive or metastatic disease subsequently undergo post-TURBT urine cytology and urinary tumor DNA (utDNA) testing. Participants with both negative urine cytology and negative utDNA results receive an additional 3 cycles of systemic immunotherapy.

Following the additional treatment, participants undergo repeat evaluation using cystoscopy with biopsy, urine cytology, and utDNA testing. Participants with negative findings on cystoscopic biopsy, urine cytology, and utDNA testing discontinue systemic immunotherapy and enter an active surveillance phase with regular follow-up monitoring. Participants who do not meet these criteria continue further clinical management and follow-up accord

Event-Free Survival

Event-free survival is defined as the time from initiation of systemic immunotherapy to the first occurrence of any of the following events after entry into the active surveillance phase: histologically confirmed intravesical recurrence of urothelial carcinoma, progression to muscle-invasive bladder cancer (≥T2 disease), regional lymph node or distant metastasis identified on chest or abdominopelvic computed tomography (CT), radical cystectomy, or death from any cause..

Residual non-muscle-invasive bladder cancer identified during the initial TURBT-based response assessment is not considered an event. Isolated urinary tumor DNA (utDNA) positivity without pathologically confirmed disease recurrence or progression is not considered an event.

无根治性膀胱切除术生存期

无根治性膀胱切除术生存期定义为从首次接受全身免疫治疗到首次发生根治性膀胱切除术或任何原因死亡的时间。

总生存期

总生存期定义为从首次接受系统性免疫治疗到因任何原因死亡的时间。

Duration of Complete Response

Duration of complete response is defined, among participants who achieve confirmed complete clinical response (cCR) at repeat evaluation after additional systemic immunotherapy, as the time from the first documentation of confirmed cCR to the first occurrence of any of the following events: histologically confirmed intravesical recurrence of urothelial carcinoma, progression to muscle-invasive bladder cancer (≥T2 disease), regional lymph node or distant metastasis identified on imaging evaluation, radical cystectomy, or death from any cause.

Confirmed complete clinical response is defined as negative findings on cystoscopy with biopsy, negative urine cytology, negative urinary tumor DNA (utDNA), and absence of muscle-invasive, nodal, or metastatic disease on chest and abdominopelvic computed tomography (CT).

Isolated urinary tumor DNA (utDNA) positivity without pathologically confirmed disease recurrence or radiographically confirmed progression is not considered an event.

Number of Participants With Treatment Emergent Adverse Events (TEAEs)

An adverse event (AE) was any untoward medical occurrence in a participant or clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. TEAEs were those events with onset dates occurring during the on-treatment period. On-treatment period was defined as the time from the first dose of study treatment up to 30 days after last dose of study treatment or 1 day before start day of new anti-cancer therapy.

EORTC QLQ-C30

To assess disease-related symptoms and HRQoL

EORTC QLQ-NMIBC24

To assess disease-related symptomd and HRQoL

EQ-5L

To assess disease-related symptoms and HRQoL