- ICH GCP
- Registr klinických studií v USA
- Klinická studie NCT07584733
Biomarker-Enriched Kidney-Preserving Strategy With Disitamab Vedotin Plus Tislelizumab in HER2-Positive High-Risk Upper Tract Urothelial Carcinoma
A Prospective, Multicentre, Single-Arm Phase II Study Evaluating a Response-Adapted Kidney-Preserving Strategy Using Neoadjuvant Disitamab Vedotin Plus Tislelizumab in Patients With HER2-Positive High-Risk Upper Tract Urothelial Carcinoma (DISTINCT-II)
This is a prospective, multicentre, single-arm phase II study evaluating a response-adapted kidney-preserving strategy in patients with HER2-positive high-risk upper tract urothelial carcinoma (UTUC). Patients will receive neoadjuvant disitamab vedotin plus tislelizumab, followed by response-adapted local treatment, including kidney-sparing surgery or radical nephroureterectomy based on predefined criteria.
The primary objective is to assess whether this multimodal strategy can achieve clinically meaningful oncologic control while preserving renal function, as measured by 1-year kidney-intact event-free survival (KI-EFS). Secondary and exploratory objectives include evaluation of clinical response, survival outcomes, safety, renal function preservation, and longitudinal dynamics of circulating and urinary tumor DNA.
Přehled studie
Postavení
Podmínky
Intervence / Léčba
Detailní popis
This is a prospective, multicentre, single-arm, phase II clinical trial designed to evaluate the efficacy and safety of a response-adapted kidney-preserving treatment strategy in patients with HER2-positive high-risk upper tract urothelial carcinoma (UTUC).
Eligible patients will receive neoadjuvant systemic therapy consisting of disitamab vedotin in combination with tislelizumab administered every 3 weeks for 2-4 cycles. Tumour response will be assessed after two cycles using radiographic evaluation and clinical assessment. Patients demonstrating clinical benefit will proceed to complete induction therapy, followed by comprehensive restaging including imaging, ureteroscopy with biopsy, and urine cytology.
Subsequent local treatment will be determined according to a predefined response-adapted algorithm. Patients meeting protocol-specified criteria will undergo kidney-sparing surgery (KSS), including segmental ureterectomy or endoscopic ablation depending on tumour location and anatomical feasibility. Patients not meeting criteria for KSS will undergo radical nephroureterectomy (RNU).
The primary objective of the study is to determine whether this multimodal strategy can achieve clinically meaningful oncologic control while preserving renal function in a biomarker-selected population.
In addition, longitudinal biospecimen collection will be conducted to evaluate the dynamics of urinary tumor DNA (utDNA) and circulating tumor DNA (ctDNA) as exploratory biomarkers of treatment response and minimal residual disease.
Typ studie
Zápis (Odhadovaný)
Fáze
- Fáze 2
Kontakty a umístění
Studijní kontakt
- Jméno: jiwei huang
- Telefonní číslo: 8613651682825
- E-mail: huangjiwei@renji.com
Studijní místa
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Shanghai Municipality
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Shanghai, Shanghai Municipality, Čína
- Ethics Committee of Shanghai Renji Hospital
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Kontakt:
- Qi Lu
- Telefonní číslo: +86021-68383364
- E-mail: rjllb3364@163.com
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Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
- Dospělý
- Starší dospělý
Přijímá zdravé dobrovolníky
Popis
Inclusion Criteria:
- Age ≥18 years at the time of informed consent.
- Histologically confirmed upper tract urothelial carcinoma (UTUC) arising from the renal pelvis or ureter, based on ureteroscopic biopsy.
- High-risk UTUC, defined by at least one of the following features: Tumour size ≥2 cm; High-grade cytology or biopsy; Radiographic evidence of local invasion (≥cT2); Hydronephrosis; Multifocal disease
- Clinical stage cT1-T3, N0-N1, M0, based on radiographic assessment.
- N1 disease is permitted only if lymph nodes are considered resectable.
- HER2-positive disease, defined as immunohistochemistry (IHC) score of 1+,2+ or 3+ on tumour tissue, assessed according to predefined criteria.
- At least one measurable lesion according to RECIST version 1.1.
- ECOG performance status of 0-1
- Adequate organ function, including: Hematologic function; Hepatic function; Renal function (no strict upper/lower limit required);
- Patients must be considered potential candidates for a kidney-preserving treatment strategy, including: Absolute or relative indication for renal preservation (e.g., solitary kidney, baseline renal insufficiency), or Strong preference for kidney preservation after multidisciplinary discussion
- Ability to understand and willingness to sign written informed consent.
Exclusion Criteria:
- Evidence of distant metastatic disease (M1).
- Unresectable or bulky nodal disease (≥N2) not amenable to curative-intent surgery.
- Prior systemic therapy for urothelial carcinoma, including:Chemotherapy; Immunotherapy; HER2-targeted therapy.
- Prior radical nephroureterectomy for current disease.
- Active autoimmune disease requiring systemic treatment within the past 2 years.
- Current use of immunosuppressive medication, excluding physiologic doses of corticosteroids.
- Uncontrolled intercurrent illness, including but not limited to: Active infection requiring systemic therapy; Uncontrolled cardiovascular disease; Significant pulmonary disease
- Known active hepatitis B, hepatitis C, or HIV infection with uncontrolled viral replication.
- History of another malignancy within the past 5 years, except: Adequately treated basal cell carcinoma; Squamous cell skin cancer; In situ carcinoma.
- Pregnant or breastfeeding women.
- Any condition that, in the opinion of the investigator, would interfere with study participation or interpretation of results.
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: N/A
- Intervenční model: Přiřazení jedné skupiny
- Maskování: Žádné (otevřený štítek)
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
|---|---|
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Experimentální: Neoadjuvant disitamab vedotin + tislelizumab followed by response-adapted surgery
Drug: Disitamab Vedotin Administered intravenously at 2.0 mg/kg every 3 weeks Drug: Tislelizumab Administered intravenously at 200 mg every 3 weeks Procedure: Surgery Kidney-sparing surgery (segmental ureterectomy or endoscopic ablation) or radical nephroureterectomy based on predefined criteria |
In this trial, RC48 was scheduled to be administered at a dose of 2.0 mg/kg every 3 weeks, with the first dose on day 1 of the first cycle.
Tislelizumab was administered at a dose of 200 mg every 3 weeks, with the first dose on day 1 of the first 21-day cycle.
The drug is diluted with normal saline and administered by intravenous drip for one hour.
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Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Kidney-Intact Event-Free Survival (KI-EFS) at 1 year
Časové okno: From enrollment to 12 months
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KI-EFS is defined as the time from study enrollment to the first occurrence of any of the following events: High-risk recurrence of upper tract urothelial carcinoma (local, regional, or distant), defined according to prespecified clinical or radiographic criteria Death from any cause Conversion to radical nephroureterectomy (RNU) for any reason Patients without an event will be censored at the date of last disease assessment. |
From enrollment to 12 months
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Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Kidney-Intact Event-Free Survival at 2 years
Časové okno: Up to 24 months
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KI-EFS is defined as the time from study enrollment to the first occurrence of any of the following events: High-risk recurrence of upper tract urothelial carcinoma (local, regional, or distant), defined according to prespecified clinical or radiographic criteria Death from any cause Conversion to radical nephroureterectomy (RNU) for any reason Patients without an event will be censored at the date of last disease assessment. |
Up to 24 months
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Disease-Free Survival (DFS) Renal Function Preservation
Časové okno: Up to 24 months
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Time from definitive local treatment (KSS or RNU) to upper tract recurrence or death from any cause.
Isolated bladder recurrence will not be counted as an event.
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Up to 24 months
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Clinical Complete Response (cCR) Rate After Induction Therapy
Časové okno: Immediately after Induction Therapy
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Clinical complete response (cCR) was defined as concordant negative findings on cross-sectional imaging, ureteroscopy, urine cytology, and targeted biopsy according to predefined criteria
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Immediately after Induction Therapy
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Clinical Complete Response (cCR) Rate After Kidney-Sparing Surgery
Časové okno: 1 month after surgery
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Clinical complete response (cCR) was defined as concordant negative findings on cross-sectional imaging, ureteroscopy, urine cytology, and targeted biopsy according to predefined criteria
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1 month after surgery
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Renal Function Preservation
Časové okno: Up to 12 months
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Change in estimated glomerular filtration rate (eGFR)
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Up to 12 months
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Safety and Tolerability
Časové okno: Up to 90 days post-treatment
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Incidence of treatment-related adverse events graded by CTCAE v5.0
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Up to 90 days post-treatment
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Další výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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ctDNA/utDNA Dynamics
Časové okno: Up to 12 months
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Detection tumor DNA (ctDNA/utDNA) using a fixed deep-sequencing panel.
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Up to 12 months
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HER2 expression level Exploratory Molecular Analyses
Časové okno: baseline, pre-Induction Therapy
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HER2 expression level pre-Induction Therapy
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baseline, pre-Induction Therapy
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Spolupracovníci a vyšetřovatelé
Sponzor
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
Další relevantní podmínky MeSH
Další identifikační čísla studie
- DISTINCT II
Informace o lécích a zařízeních, studijní dokumenty
Studuje lékový produkt regulovaný americkým FDA
Studuje produkt zařízení regulovaný americkým úřadem FDA
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