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Lorlatinib administered as monotherapy by PO (per os) or NG (nasogastric) for two 28-day cycles at 115 mg/m2/day (or maximum 200mg/dose), after which disease evaluation by Magnetic Resonance Imaging (MRI) imaging will be performed.

Lorlatinib monotherapy x2 cycles followed by maintenance therapy with lorlatinib (115 mg/m2/day) and BABY-POG chemotherapy backbone (vincristine, cyclophosphamide, cisplatin) The BABYPOG chemotherapy backbone regimen will consist of six 12-week courses. Each course will consist of cycles A, A2 and B, which will be administered consecutively, in 28-day cycles for a total of 72 weeks

Lorlatinib monotherapy x2 cycles followed by maintenance therapy with lorlatinib (115 mg/m2/day) and HIT-SKK chemotherapy backbone (cyclophosphamide, vincristine, methotrexate, carboplatin, etposide) The recommended HIT-SKK chemotherapy backbone regimen consists of modular chemotherapy cycles, three courses of 4 blocks each (Element IIS, Element IIIS/1, Element IIIS/2, and Element IVS). Each element will be administered consecutively at 2-3-week intervals. Elements IIS and IVS cycles will be repeated twice thereafter. The entire length of treatment for HIT-SKK will be approximately 42 weeks.

Lorlatinib monotherapy x2 cycles followed by Radiation Therapy and continue lorlatnib maintenance monotherapy (115 mg/m2/day) 28 days post completion of RT for 12 cycles

Continue maintenance monotherapy for total 12 cycles

Lorlatinib

Continue lorlatinib with BABY-POG chemotherapy backbone for 72 weeks

Lorlatinib with chemotherapy1

Continue lorlatinib with HIT-SKK chemotherapy backbone for 42 weeks

Lorlatinib with chemotherapy 2

Continue lorlatinib monotherapy 28 days post completion of radiation therapy for 12 cycles

Lorlatinib post Radiation

Leonie Mikael, PhD

Kathleen Dorris, MD

Eugene Hwang

Ashley Plant, MD

Susan Chi

David Ashley, MD

Peter de Blank, MD

Maryam Fouladi, MD, MSc

Michael J Fisher, MD

Patricia Baxter, MD

Sarah Leary

David Ziegler, MD

Tim Hassall, MD

Nicholas G Gottardo, MBChB

Eric Bouffet

Genevieve Legault, MD

Olaf Witt, MD

Jasper van der Lugt

Hamza Gorsi, MD

Susan Chi, MD

Maryam Fouladi, MD

The goal of this study is to determine the response of the study drug loratinib in treating children who are newly diagnosed high-grade glioma with a fusion in ALK or ROS1. It will also evaluate the safety of lorlatinib when given with chemotherapy or after radiation therapy.

This is a multi-institutional clinical trial of lorlatinib in children newly diagnosed with High Grade Glioma (HGG) harboring ROS1 (ROS Proto-Oncogene 1, Receptor Tyrosine Kinase) or ALK (anaplastic lymphoma kinase) fusions. In this pilot study, investigators will assess the disease control rate (Continued Complete Response (CCR), Complete Response (CR), Partial Response (PR), and Stable Disease (SD)) of lorlatinib, and feasibility and safety of lorlatinib administration in combination with standard chemotherapy in children with newly diagnosed HGG with ROS or ALK fusions who receive 2 cycles of lorlatinib administered orally, once daily, at 115 mg/m2/day (or maximum of 200mg/dose) continuously. Secondary objectives include overall survival (OS) and progression free survival (PFS) lorlatinib as a single agent and in combination with standard chemotherapy used in children ≤ 48 months with HGG, or post focal radiotherapy in children \> 48 months of age. Children with HGG who have a CCR or CR after 2 cycles of therapy will continue to receive single agent lorlatinib for a total of 12xs 28-day cycles. Continuation of treatment beyond 12 cycles, and up to maximum 26 cycles, may be considered for patients on lorlatinib monotherapy if they are receiving clinical benefit from the study, at the discretion of the treating physician. Patients with PR or SD after 2 cycles of lorlatinib monotherapy will go on to receive lorlatinib either in combination with standard backbone chemotherapy (BABYPOG or HIT-SKK, investigator's choice) or post standard radiotherapy, based on the patient's age. Patients with PD after 2 cycles will be taken off protocol therapy.

Based on recent trials conducted in this patient population, investigators conservatively estimate that 1 child with newly diagnosed DIPG or HGG with either ROS1 or ALK fusion will be enrolled every 2 months on this study. Patients will start at the recommended phase 2 dose of 115 mg/m2/day, continuously for 28 days, and one dose de-de-escalations will be allowed. A maximum of 15 eligible patients will be enrolled, anticipated over 2.5 years.

Lorlatinib for Newly-Diagnosed High-Grade Glioma With ROS or ALK Fusion

A Pilot Study of Lorlatinib for Treatment of Children With Newly Diagnosed High-Grade Glioma With ROS-1 (ROS Proto-Oncogene 1, Receptor Tyrosine Kinase) or ALK (Anaplastic Lymphoma Kinase) Fusion

To assess the disease control rate (Complete Response \[CR\], Continued Complete Response \[CCR\], Partial Response \[PR\] and Stable Disease \[SD\]) of lorlatinib in young children with newly diagnosed high-grade glioma with ALK or ROS1 fusion after 2 cycles of lorlatinib monotherapy.

Assess and further characterize the safety and toxicity of lorlatinib in pediatric patients newly diagnosed with HGG with a fusion in ALK or ROS. This will be achieved by calculating the number of participants with, as well as frequency and severity of, lorlatinib-related Adverse Events as assessed by CTCAE v5.0

To assess the objective response rate (ORR) (Complete Response \[CR\] and Partial Response \[PR\]) of lorlatinib in children with newly diagnosed high-grade glioma with ALK or ROS1 fusion after 2 cycles of lorlatinib monotherapy.

To assess overall (OS) of children with high-grade gliomas treated with a lorlatinib-containing regimen at 1, 3 and 5 years and compare it to historical data from BABYPOG and HIT-SKK.

To assess progression-free survival (PFS) of children with high-grade gliomas treated with a lorlatinib-containing regimen at 1, 3 and 5 years and compare it to historical data from BABYPOG and HIT-SKK.

Pfizer

Nationwide Children's Hospital

Spots Global Cancer Trial Database for ros fusion

Every month we try and update this database with for ros fusion cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Spots Global Cancer Trial Database for ros fusion

Every month we try and update this database with for ros fusion cancer trials from around the world to help patients and their families find trials that might be right for them. We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Every month we try and update this database with for ros fusion cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.