A Phase 1/2 interventional study of SLC-0111 and Gemcitabine Injection in Metastatic Pancreatic Ductal Adenocarcinoma, sponsored by British Columbia Cancer Agency. Terminated at 2 sites in Canada. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-05-24.
Sponsored by British Columbia Cancer Agency · Phase 1/2, Interventional, and Treatment
This is a multi-center, open-label Phase 1b study of SLC-0111 (oral) in combination with IV gemcitabine in CA IX positive subjects with mPDAC and comprises of 2 parts:
This is a multi-center, open-label Phase 1b study of SLC-0111 (oral) in combination with IV gemcitabine in CA IX positive subjects with mPDAC and comprises of 2 parts:
Biopsy or archival tissue will be collected and tested for the presence of CAIX via Immunohistochemistry (IHC) and only subjects positive for CAIX will be enrolled in the dose-escalation and dose-expansion parts. Part 2 can only begin after a dosing regimen has been characterized in Part 1. Subjects who participated in Part 1 of study will not be eligible to participate in Part 2.
The dose escalation will aim to identify the safety, tolerability and MTD of the oral formulation of SLC-0111 in combination with IV gemcitabine. Additional subjects may be enrolled at the MTD in dose expansion cohort. Data collected will allow evaluation of safety, tolerability, PK, Pharmacodynamics (PD) and tumour response of SLC-0111 in combination with gemcitabine.
A traditional 3 + 3 dose escalation design will be utilized for this study. Cohorts (same dose level) of 3 to 6 evaluable subjects will participate in a dose escalation scheme in which the dose of SLC-0111 will be increased in each consecutive cohort. Dose escalation to a new cohort of subjects will occur after review of available Cycle 1 data. The dose of SLC-0111 will be escalated based on Table 1 and Table 2 in the protocol. Based on emerging data alternative dosing schedules, or dose reductions may be considered. Gemcitabine will be administered at the standard dose (1000 mg/m\^2) and schedule (day 1, 8, and 15 of each cycle) but dose reductions may be considered if necessary.
Following the identification of a Cohort that exceeds the MTD, the next lowest dose, or an intermediate dose level may be further explored.
The MTD will be defined as the highest dose level at which no more than 1 of 6 subjects demonstrates DLTs.
Intra-subject dose escalation will not be allowed in this study.
Pre-Screening Inclusion Criteria:
Histologically or cytologically-confirmed metastatic pancreatic ductal adenocarcinoma (this can include distant lymph nodes). Subjects with locally advanced disease or regional lymph node involvement are to be excluded.
Main Study Inclusion Criteria:
Histologically or cytologically-confirmed metastatic pancreatic ductal adenocarcinoma (this can include distant lymph nodes). Subjects with locally advanced disease or regional lymph node involvement are to be excluded.
The following time must have elapsed between previous therapy for cancer or medical history event and first administration of SLC-0111 and gemcitabine:
Adequate renal function:
Adequate hepatic function:
Adequate hematologic function (without G-CSF support):
Adequate coagulation tests:
Additional Inclusion Criteria for Dose Expansion (Part 2):
Exclusion Criteria:
Additional Dose Expansion Exclusion Criteria:
Subjects cannot be enrolled in the dose expansion if they were enrolled during the dose escalation of the current study.
Dose Level 1 - SLC-0111 (500 mg/day PO daily for 28 days) and Gemcitabine (1000 mg/m\^2 IV on day 1, 8, and 15) Dose Level 2 - SLC-0111 (750 mg/day PO daily for 28 days) and Gemcitabine (1000 mg/m\^2 IV on day 1, 8, and 15) Dose Level 3 - SLC-0111 (1000 mg/day PO daily for 28 days) and Gemcitabine (1000 mg/m\^2 IV on day 1, 8, and 15)
Drug: SLC-0111 · Drug: Gemcitabine Injection
Oral SLC-0111
Also known as: WBI-5111
1000 mg/m\^2 IV
Also known as: Gemcitabine
Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability]
Adverse events (AEs) as assessed by CTCAE v5.0 will be determined by changes in safety assessments, including laboratory parameters, vital signs, ECG and physical examinations.
Time frame: Up to Safety Follow-Up Visit (30 days +/- 7 days after permanently stopping study treatment)
The maximum tolerated dose [MTD] of SLC-0111 in combination with gemcitabine
Dose limiting toxicities (adverse events) will be determined by changes in safety assessments, including vital signs, clinical laboratory evaluations and ECG.
Time frame: Up to Safety Follow-Up Visit (30 days +/- 7 days after permanently stopping study treatment)
Maximum Plasma Concentration [Cmax]
Analyze the pharmacokinetic profile of SLC-0111 and gemcitabine when used in combination by measuring the maximum (peak) plasma concentration (Cmax).
Time frame: Up to 4 years
Time to Reach Maximum Plasma Concentraiton [Tmax]
Analyze the pharmacokinetic profile of SLC-0111 and gemcitabine when used in combination by the time to reach maximum (peak) plasma concentration following drug administration (Tmax).
Time frame: Up to 4 years
Elimination Rate Constant from the Central Compartment [Kel]
Analyze the pharmacokinetic profile of SLC-0111 and gemcitabine when used in combination by measuring the elimination rate constant from the central compartment (Kel).
Time frame: Up to 4 years
Volume of Distribution During Terminal Phase after Intravenous Administration [Vz]
Analyze the pharmacokinetic profile of SLC-0111 and gemcitabine when used in combination by measuring the volume of distribution during terminal phase after intravenous administration (Vz).
Time frame: Up to 4 years
Area Under the Concentration-Time Curve from Zero up to a Definite Time T [AUC(0-T)]
Analyze the pharmacokinetic profile of SLC-0111 and gemcitabine when used in combination by measuring the area under the concentration-time curve from zero up to a definite time T (AUC(0-T)).
Time frame: Up to 4 years
Area Under the Concentration-Time Curve from Zero up to Infinity [AUC(0-inf)]
Analyze the pharmacokinetic profile of SLC-0111 and gemcitabine when used in combination by measuring the area under the concentration-time curve from zero up to infinity with extrapolation of the terminal phase (AUC(0-inf)).
Time frame: Up to 4 years
Elimination Half-Life
Analyze the pharmacokinetic profile of SLC-0111 and gemcitabine when used in combination by measuring the elimination half-life (T1/2).
Time frame: Up to 4 years
Determine the Recommended Phase II Dose of SLC-0111 in combination with gemcitabine
Recommended Phase II Dose (RP2D) Safety and PK
Time frame: Up to 2 years
Objective Response Rate [ORR] as Assessed by RECIST 1.1
Objective response rate (ORR) as assessed by RECIST 1.1 or clinical examination, where appropriate. ORR is the change in tumour volume from baseline to best overall response.
Time frame: Up to 1 year
Progression-Free Survival [PFS] as Assessed by RECIST 1.1
Progression-free survival (PFS) as assessed by RECIST 1.1 or clinical examination, where appropriate. PFS is defined as the duration of time from start of treatment to progression or death, whichever occurs first. Subjects alive at the time of last follow up without disease progression will be censored at that time point.
Time frame: Up to 1 year
Duration of Response as Assessed by RECIST 1.1
Duration of response as assessed by RECIST 1.1 or clinical examination, where appropriate. Duration of response is defined as the time from start of response \[Complete Response (CR) or Partial Response (PR)\] until progression or death due to any cause.
Time frame: Up to 2 years
Overall Survival [OS]
Overall survival (OS) is defined as the time from initiation of investigational product(s) to death due to any cause.
Time frame: Up to the end of the study
Tumour Metabolic Response Using Positron Emission Tomography with 18F-FDG-PET
Changes in mean standard values of 18F-FDG uptake expressed as the peak standardized uptake value corrected for lean body mass (SULpeak),as defined by Positron Emission Tomography (PET) Response Criteria in Solid Tumours (PERCIST 1.0)
Time frame: Up to C3D1 +/- 7 days
CAIX Biomarker Values
Change from baseline in CAIX biomarker measured in tumour biopsies. Explore relationships between CAIX biomarker values and markers of clinical activity
Time frame: Up to 4 years
Plan to share: No
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British Columbia Cancer Agency