CAEL101-203: A Phase 2, Open-label, Multicenter Dose Selection Study to Evaluate the Safety and Tolerability of CAEL-101 in Patients With AL Amyloidosis
CAEL101-203: A Phase 2, Open-label, Multicenter Dose Selection Study to Evaluate the Safety and Tolerability of CAEL-101 in Patients With AL Amyloidosis
AL amyloidosis begins in the bone marrow where abnormal proteins misfold and create free light chains that cannot be broken down. These free light chains bind together to form amyloid fibrils that build up in the extracellular space of organs, affecting the kidneys, heart, liver, spleen, nervous system and digestive tract.
The primary purpose of this study is to determine the recommended dose of CAEL-101 to facilitate progression of further clinical trials and evaluate safety and tolerability of CAEL-101 in combination with the standard of care (SoC) cyclophosphamide-bortezomib-dexamethasone (CyBorD) chemotherapy and daratumumab .
This is a multicenter, open-label, sequential cohort, dose-selection study of CAEL-101 in Mayo Stage I, Stage II and Stage IIIa AL amyloidosis patients. CAEL-101 will be administered in combination with the standard of care (SoC) cyclophosphamide-bortezomib-dexamethasone (CyBorD) chemotherapy and daratumumab.
The study is divided into two parts with the following objectives:
The study will also evaluate the pharmacokinetic profile of CAEL-101 and explore the PK profile of CAEL-101 when given bi-weekly (q2wk) versus once-monthly (q4wk) after the first 50 weeks.
Part A of the study will employ a 3+3 dose escalation design. At least 3 patients will be enrolled in each dose cohort unless adverse events (AE) preventing further dosing are observed. CAEL-101 will be administered in combination with the SoC CyBorD chemotherapy.
In Part B, a minimum of 6 new patients will receive CAEL-101 administered in combination with SoC CyBorD and daratumumab.
Patients from both Parts A and B will receive CAEL-101 therapy weekly and SoC throughout the safety observation period. CAEL-101 study drug infusions will continue, with dosing approximately every two weeks (q2wk) thereafter. SoC will continue per the Investigator's discretion. After completing approximately 50 weeks of treatment, participants may switch to an alternative maintenance dosing regimen of every four weeks (q4wk), if agreed upon by the Investigator and the Sponsor Medical Monitor.
Approximately 25 patients will be enrolled in the study at approximately 3 investigator sites.
Patients will be treated with CAEL-101 until death, unacceptable toxicity, symptomatic deterioration, Investigator decision, patient decision or Sponsor decision to terminate the study.
Key Inclusion Criteria:
Each patient must meet the following criteria to be enrolled in this study.
AL amyloidosis Mayo stage I, II or IIIa
For Part A only, measurable hematologic disease defined by at least one of the following:
a. For Part A, currently on and continuing OR planned to start concurrent chemotherapy with CyBorD administered weekly as SoC. b. For Part B, currently on and continuing OR planned to start concurrent chemotherapy with CyBorD and daratumumab administered as SoC.
Key Exclusion Criteria:
Patients who meet any of the following criteria will not be permitted entry to the study.