A Single-arm, Open Clinical Trial of Efficacy and Safety of Tislelizumab in Combination With Disitamab-vedotin as Neoadjuvant Therapy for HER2-positive High-risk Upper Tract Urothelial Carcinoma (UTUC)

Sponsor

Tianjin Medical University Second Hospital (Other)

Overall Status

Recruiting

CT.gov ID

NCT05837806

Collaborator

(none)

Enrollment

Location

Arm

Anticipated Duration (Months)

0.5

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

Neoadjuvant chemotherapy treatment can be used for specific UTUC patients, especially for highly staged and/or grade tumors, such as kidneys with potentially decreased renal function after RNU. Neoadjuvant therapy is a series of treatments administered preoperatively for UTUC, mainly chemotherapy, and in recent years, novel therapies of immunotherapy have emerged. Since conventional cisplatin neoadjuvant regimens also require high preoperative renal function, neoadjuvant therapy regimens such as immunotherapy provide more effective and feasible treatments for patients who are intolerant to current cisplatin chemotherapy regimens. The aim of this study was to explore a novel preoperative neoadjuvant immunotherapy for UTUC. To further observe the feasibility and safety of this regimen in the field of UTUC.

Condition or Disease	Intervention/Treatment	Phase
Neoadjuvant Immunotherapy	Drug: tislelizumab+disitamab-vedotin	Phase 2

Study Design

Study Type:

Interventional

Anticipated Enrollment :

27 participants

Allocation:

N/A

Intervention Model:

Single Group Assignment

Masking:

None (Open Label)

Primary Purpose:

Treatment

Official Title:

A Single-arm, Open Clinical Trial of Efficacy and Safety of Tislelizumab in Combination With Disitamab-vedotin as Neoadjuvant Therapy for HER2-positive High-risk Upper Tract Urothelial Carcinoma (UTUC)

Actual Study Start Date :

Dec 30, 2022

Anticipated Primary Completion Date :

Nov 30, 2024

Anticipated Study Completion Date :

Dec 30, 2027

Arms and Interventions

Arm	Intervention/Treatment
Experimental: tislelizumab+disitamab-vedotin	Drug: tislelizumab+disitamab-vedotin patients in group will receive 3 cycles of tislelizumab 200 mg in combination with disitamab-vedotin 120 mg intravenously.

Arm

Intervention/Treatment

Experimental: tislelizumab+disitamab-vedotin

Drug: tislelizumab+disitamab-vedotin

patients in group will receive 3 cycles of tislelizumab 200 mg in combination with disitamab-vedotin 120 mg intravenously.

Outcome Measures

Primary Outcome Measures

pCR [3 months]
Defined as the percentage of patients with pT0N0 pathological findings after resection as a percentage of total patients

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Inclusion Criteria:

1. diagnosed as high-risk upper uroepithelial carcinoma (according to CSCO2021 diagnostic criteria) by ureteroscopy or urinary exfoliation cytology, imaging (CT, MRI or PET-CT, etc.), clinical stage T1-T4N0-2M0; pathological tissue immunohistochemistry HER2 1~3+; 2. male or female aged 18 years and above; 3. expected survival time greater than 12 weeks; 4. an ECOG status score of 0-2; 5. agree to provide specimens of blood, urine, and tissue examination (for detection of MRD, PD-L1 expression, HER2 expression, tumor mutation load, immunohistochemistry, DNA and RNA detection, etc.);

The level of organ function must meet the following requirements:

hematological indicators: absolute neutrophil count ≥ 1.5 × 109/L, platelet count ≥ 80 × 109/L, hemoglobin ≥ 6.0 g/dL (can be maintained by symptomatic treatment)
hepatic function: total bilirubin ≤ 1.5 times the upper limit of normal, and glutathione and glutamic oxalacetic transaminase ≤ 2.5 times the upper limit of normal;
renal function: GFR ≥ 15 ml/min;
Subjects voluntarily joined the study, signed an informed consent form, were compliant, and cooperated with the follow-up.

Exclusion Criteria:

1. live attenuated vaccines, other than COVID-19 vaccine, received within 4 weeks prior to treatment or scheduled to be received during the study period 2. active, known or suspected autoimmune disease; 3. known history of primary immunodeficiency;

known history of allogeneic organ transplantation and allogeneic hematopoietic stem cell transplantation 5. female patients who are pregnant or breastfeeding 6. untreated acute or chronic active hepatitis B or C infection. Patients who are receiving antiviral therapy with monitoring of viral copy number and are eligible for enrollment as determined by the physician on an individual patient basis; 7. previous use of immunosuppressive drugs, excluding nasal spray and inhaled corticosteroids or physiologic doses of systemic steroids (i.e., no more than 10 mg/day prednisolone or equivalent pharmacologic physiologic doses of other corticosteroids), within 4 weeks prior to initiation of therapy 8. known or suspected hypersensitivity to tirelizumab and vedicituzumab 9. with a clear history of active tuberculosis 10. prior PD-1/PD-L1/CTLA-4 antibody or other immunotherapy; 11. those who are participating in other clinical studies 12. men of reproductive potential or women with the potential to become pregnant who are not using reliable contraception 13. uncontrolled co-morbidities, including but not limited to

HIV-infected individuals (HIV-positive);
Severe infections that are active or poorly controlled clinically (including patients in the period of neocoronavirus infection)
Evidence of the presence of severe or uncontrolled systemic disease (e.g., severe psychiatric, neurological disease, epilepsy or dementia, unstable or uncompensated respiratory, cardiovascular, hepatic or renal disease, uncontrolled hypertension [i.e., defined as greater than or equal to CTCAE grade 2 hypertension despite medication]).