Clinical trial NCT06186414: A Study to Investigate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of SIM0237 Alone or in Combination with BCG in NMIBC
Official title: An Open-Label, Multicenter Phase 1 Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of SIM0237 Alone or in Combination with BCG in Non-Muscle-Invasive Bladder Cancer
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: PHASE1
Conditions: Non-Muscle-Invasive Bladder Cancer (NMIBC)
Keywords: NMIBC
Lead sponsor: Jiangsu Simcere Pharmaceutical Co., Ltd.
Sponsor class: INDUSTRY
Collaborators: name: Shanghai Xianxiang Medical Technology Co., Ltd.
First posted: 2024-01-02
Enrollment: 152
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NON_RANDOMIZED
Intervention model: SEQUENTIAL
Primary purpose: TREATMENT

Brief summary: This is an open-label, multicenter phase 1 study to evaluate the safety, efficacy, and pharmacokinetics (PK) characteristics of SIM0237 alone or in combination with bacillus Calmette-Guerin (BCG) in participants with Non-Muscle-Invasive Bladder Cancer (NMIBC)

Detailed description: The study starts with a dose escalation part followed by a dose expansion part. The primary objective of the dose escalation part is to evaluate the safety and tolerability of SIM0237 alone or in combination with BCG, and determine the recommended dose(s) (RD). The primary objective of the dose expansion part is to evaluate the preliminary efficacy of SIM0237 alone or in combination with BCG.

Eligibility criteria: Inclusion Criteria:

* Written informed consent.
* ≥ 18 years of age, male or female.
* • Histologically confirmed presence of BCG-unresponsive CIS (with or without Ta or T1 disease) or histologically confirmed presence of BCG-unresponsive high-grade Ta or T1 disease. Histologic confirmation of urothelial carcinoma (mixed histology tumors allowed if urothelial histology is predominant histology).
* Dose escalation phase: BCG-unresponsive high-risk NMIBC.
* Dose expansion phase: a) Cohorts 1 and 3: BCG-unresponsive CIS (with or without Ta or T1 disease); b) Cohort 2 and 4: BCG-unresponsive high-risk Ta or T1 disease.
* Absence of resectable disease after transurethral resection (TURBT) procedures \[residual carcinoma in situ (CIS) acceptable\]. patients with T1 tumors must undergo repeat resection and pathological test if initial pathological test sample did not include muscularis propria, to ensure the inclusive of muscularis propria and the absence of invasive tumor.
* Not suitable for or unwilling to undergo radical cystectomy.
* ECOG performance status of 0, 1or 2.
* Life expectancy ≥ 2 years.
* Adequate hematologic and organ function.
* Women of childbearing potential (WOCBP) must have a negative serum pregnancy test. WOCBP and male subjects agree to use adequate contraception.
* Tumor tissue (archival or fresh) for biomarker analysis.

Exclusion Criteria:

* • Subjects received TURBT or other surgical treatment for bladder lesions or pelvic radiotherapy or interventional therapy within 2 weeks prior to the first dose.
* Previous treatment with: a) IL-15 or IL-2; b) immune checkpoint inhibitors (such as anti-PD-1 or PD-L1 antibodies), ADCs, chemotherapies, oncolytic viruses, BCG or other anti-tumor treatments, unless there is clear evidence of disease persistence/recurrence/progression after the above treatments and beyond 4 weeks prior to the first dose; c) Chinese herbal medicine treatment beyond 2 weeks prior to the first dose is allowed; d) A single immediate instillation of chemotherapy within 4 weeks prior to the first dose is allowed; e) intravesical instillation of mucosal protective agents (e.g., sodium hyaluronate) are allowed.
* Subject is participating in an investigational drug or investigational device study.
* Subjects have not recovered from AEs caused by previous anti-tumor treatment.
* History/evidence of prior muscle-invasive, locally advanced, metastatic bladder cancer or upper urinary tract (kidney, renal pelvis, ureter) and prostatic urethral tumors; or evidence of Ta/T1/CIS urothelial transitional cell carcinoma outside the bladder (urethra, ureter, renal pelvis) during the screening period.
* Patients with other malignancies within 5 years before the first dose.
* Any active infection or urinary tract infection requiring systemic treatment by intravenous infusion within 2 weeks before the first dose.
* Subjects with clinically significant cardiovascular disease within 6 months before the first dose of study treatment.
* Known human immunodeficiency virus (HIV) infection or known acquired immunodeficiency syndrome (AIDS).
* Active or chronic hepatitis B or hepatitis C infection.
* Known or suspected active autoimmune diseases.
* Concurrent use of any other anticancer therapy or chronic use of systemic corticosteroids at immunosuppressive doses (more than 10 mg/day prednisone or equivalent).
* History of pneumonitis or interstitial lung disease or severe obstructive pulmonary disease that requires oral or intravenous steroids to help recover.
* Known to be allergic or intolerant to study drugs, monoclonal antibodies, excipients; or allergic or intolerant to BCG (only for subjects receiving combined BCG therapy)
* Subjects discontinued prior BCG treatment due to AEs such as toxemia, systemic infection, or urinary incontinence (only for subjects receiving combined BCG therapy).
* History of allogeneic organ transplantation or graft-versus-host disease.
* Any live vaccines within 4 weeks before the first dose.
* Known mental illness or substance abuse that would interfere with trial complies.
* Subject is pregnant or lactating, or is expected to become pregnant or parent a child during the planned study period.
* Other conditions that investigators consider inappropriate for inclusion.

Primary outcomes:
measure: Dose escalation:Dose limited toxicity (DLT)
timeFrame: DLT observation period (up to 21 days)
measure: Dose escalation: Percentage of participants experiencing treatment-emergent adverse events (TEAEs)
timeFrame: through study completion, an average of 5 years
measure: Dose expansion:Complete response (CR) rate at Month 3
timeFrame: through study completion, an average of 5 years
measure: Dose escalation: Percentage of participants experiencing AE related dose interruptions and dose delays, dose intensity
timeFrame: through study completion, an average of 5 years
Secondary outcomes:
Other outcomes:
Locations:
city: Beijing
country: China
facility: Peking University Third Hospital
state: Beijing
city: Guangzhou
country: China
facility: Sun Yat-sen University Cancer Center
state: Guangdong
city: Haerbin
country: China
facility: Harbin Medical University Cancer Hospital
state: Heilongjiang
city: Zhengzhou
country: China
facility: Henan Cancer Hospital Affiliated Cancer Hospital of Zhengzhou University
state: Henan
city: Wuhan
country: China
facility: Renmin Hospital of Wuhan University
state: Hubei
city: Changsha
country: China
facility: Hunan Cancer Hospital
state: Hunan
city: Jinan
country: China
facility: Qilu Hospital of Shandong University
state: Shandong
city: Qingdao
country: China
facility: The Affiliated Hospital of Qingdao University
state: Shandong
city: Shanghai
country: China
facility: Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
state: Shanghai
city: Shanghai
country: China
facility: Fudan University Shanghai Cancer Center
state: Shanghai
city: Taiyuan
country: China
facility: First Hospital of Shanxi Medcial University
state: Shanxi
city: Chengdu
country: China
facility: West China Hospital of Sichuan University
state: Sichuan
city: Tianjin
country: China
facility: The Second Hospital of Tianjin Medical University
state: Tianjin
city: Wenzhou
country: China
facility: The First Affiliated Hospital of Wenzhou Medical University
state: Zhejiang
Study officials:
References: