Lorlatinib is a novel inhibitor across ALK variants, including those resistant to crizotinib. In this first pediatric phase 1 trial of lorlatinib, the drug will be utilized as a single agent and in combination with chemotherapy in patients with relapsed/refractory neuroblastoma. The dose escalation phase of this study (Cohort A1) uses a traditional Phase I 3+3 design. Once a recommended phase 2 pediatric dose is identified, an expansion cohort of 6 patients (Cohort B1), within which ALKi naïve patients will be prioritized, will be initiated. Parallel cohorts will be initiated in adults or patients with large BSA (Cohort A2) and in combination with chemotherapy upon establishing RP2D (Cohort B2).
Lorlatinib is a novel inhibitor across ALK variants, including those resistant to crizotinib. An adult phase 1 study established an RP2D of 100mg QD for lorlatinib. In this first pediatric phase 1 trial of lorlatinib, the drug will be utilized as a single agent and in combination with chemotherapy in patients with relapsed/refractory neuroblastoma. The dose escalation phase of this study (Cohort A1) uses a traditional Phase I 3+3 design. Once a recommended phase 2 pediatric dose is identified, an expansion cohort of 6 patients (Cohort B1), within which ALKi naïve patients will be prioritized, will be initiated. Parallel cohorts will be initiated in adults or patients with large BSA (Cohort A2) and in combination with chemotherapy upon establishing RP2D (Cohort B2). Lorlatinib will be administered orally via tablets or via oral dispersion if patient is unable to swallow tablets whole All patients will participate in mandatory pharmacokinetic testing.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
65
Lorlatinib will be given orally once daily continuously in 28-day cycles. Lorlatinib will be provided as 5 mg or 25 mg tablets.
Cyclophosphamide 250mg/m2/day will be administered as a 30 minute IV infusion on days 1-5 of each cycle
Topotecan 0.75mg/m2/day will be administered as a 30 minute IV infusion immediately following cyclophosphamide on days 1-5 of each cycle
Filgrastim is to be given with each course beginning 24-48 hours following completion of cyclophosphamide and topotecan and continued through post-nadir count recovery with an ANC \> 2000/mm\^3 at 5mcg/kg/day. Filgrastim must be discontinued at least 24 hours prior to the start of the next course of therapy. Pegfilgrastim (100mcg/kg; 6mg maximum dose) may be substituted and is given one time at 24-48 hours from completion of cyclophosphamide and topotecan.
Children's Hospital Los Angeles
Los Angeles, California, United States
UCSF Helen Diller Family Comprehensive Cancer Center
San Francisco, California, United States
Children Hospital of Colorado
Aurora, Colorado, United States
Children's Healthcare of Atlanta
Atlanta, Georgia, United States
University of Chicago, Comer Children's Hospital
Chicago, Illinois, United States
Childrens Hospital Boston, Dana-Farber Cancer Institute.
Boston, Massachusetts, United States
C.S Mott Children's Hospital
Ann Arbor, Michigan, United States
Children's Hospital of Philadelphia
Philadelphia, Pennsylvania, United States
Cook Children's Healthcare System
Fort Worth, Texas, United States
Children's Hospital and Regional Medical Center - Seattle
Seattle, Washington, United States
...and 3 more locations
MTD/RP2D Determination A1
Proportion of patients with course 1 DLT and/or course 2 neuropsychological DLT in cohort A1
Time frame: All toxicities from enrollment until completion of course 2 (Day 56)
MTD/RP2D Determination A2
Proportion of patients with course 1 DLT and/or course 2 neuropsychological DLT in cohort A2
Time frame: All toxicities from enrollment until completion of course 2 (Day 56)
MTD/RP2D Determination B2
Proportion of patients with course 1 DLT in cohort B2
Time frame: All toxicities from enrollment until completion of course 1 (Day 28)
Describe Non-Hematological Toxicities (A1 and B1)
Proportion of patients with any grade 3 or greater non-hematological toxicities on any course in A1 and B1
Time frame: All toxicities from enrollment through 30 days following end of protocol therapy, an average of 10 months
Describe Hematological Toxicities (A1 and B1)
Proportion of patients with any grade 3 or greater hematological toxicities on any course in A1 and B1
Time frame: All toxicities from enrollment through 30 days following end of protocol therapy, an average of 10 months
Describe Non-Hematological Toxicities (A2)
Proportion of patients with any grade 3 or greater non-hematological toxicities in A2
Time frame: All toxicities from enrollment through 30 days following end of protocol therapy, an average of 10 months
Describe Hematological Toxicities (A2)
Proportion of patients with any grade 3 or greater hematological toxicities in A2
Time frame: All toxicities from enrollment through 30 days following end of protocol therapy, an average of 10 months
Describe Non-Hematological Toxicities (B2)
Proportion of patients with any grade 3 or greater non-hematological toxicities in B2
Time frame: All toxicities from enrollment through 30 days following end of protocol therapy, an average of 10 months
Describe Hematological Toxicities (B2)
Proportion of patients with any grade 3 or greater hematological toxicities in B2
Time frame: All toxicities from enrollment through 30 days following end of protocol therapy, an average of 10 months
Pharmacokinetics A1 and B1-Steady State AUC
Steady State AUC for lorlatinib in patients in cohort A1 and B1
Time frame: Day 1 through Day 15 (0, 1, 2, 24, 360, 361, 362, 364, 366 hours post-initial dose)
Pharmacokinetics A2-Steady State AUC
Steady State AUC for lorlatinib in patients in cohort A2
Time frame: Day 1 through Day 15 (0, 1, 2, 24, 360, 361, 362, 364, 366 hours post-initial dose)
Pharmacokinetics B2-Steady State AUC
Steady State AUC for lorlatinib in patients in cohort B2
Time frame: Day 1 through Day 15 (0, 1, 2, 24, 360, 361, 362, 364, 366 hours post-initial dose)
Overall Response A1 and B1
Proportion of patients evaluable for response with a best overall response of CR/CR-MD/PR for patients in cohort A1 and B1
Time frame: From Day 1 of protocol therapy through 30 days following end of protocol therapy, an average of 10 months
Overall Response A2
Proportion of patients evaluable for response with a best overall response of CR/CR-MD/PR for patients in cohort A2
Time frame: From Day 1 of protocol therapy through 30 days following end of protocol therapy, an average of 10 months
Overall Response B2
Proportion of patients evaluable for response with a best overall response of CR/CR-MD/PR for patients in cohort B2
Time frame: From Day 1 of protocol therapy through 30 days following end of protocol therapy, an average of 10 months
Pharmacokinetics A1 and B1-Cmax
Cmax for lorlatinib in patients in cohort A1 and B1
Time frame: Day 15
Pharmacokinetics A2-Cmax
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Cmax for lorlatinib in patients in cohort A2
Time frame: Day 15
Pharmacokinetics B2-Cmax
Cmax for lorlatinib in patients in cohort B2
Time frame: Day 15