TiNT: Trametinib in Neurofibromatosis type 1 associated tumours

Abstract

The purpose of this study is to determine if a targeted therapy (a drug called trametinib) has an effect on tumour response in children, teenagers and young adults with neurofibromatosis type 1 (NF1) associated Plexiform Neurofibromas and Optic Pathway Gliomas.

Who is it for? You may be eligible for the treatment arm of this study if you are between 3 months and 25 years old and have NF1 associated plexiform neurofibromas or progressive optic pathway gliomas. You may be eligible for the control arm of the substudy if you are between 3 months and 25 years old with NF1.

Study details All participants in the main part of this study will receive the targeted therapy (trametinib) and are expected to take this drug daily for two years. The medication will be provided as either an oral tablet or an oral solution.

Participants taking trametinib will be expected to complete some assessments at enrolment and attend monthly hospital visits for general health reviews. Additionally, every three months for two years, assessments will include MRI scans, and cardiac and vision testing. These assessments will measure whether trametinib is effectively treating the tumour and will also monitor any side effects.

There is also a sub-study occurring within this study to find out if trametinib can improve learning, behaviour and well-being for those with NF1. For this part of the study, an untreated control group will be enrolled to compare to the trametinib-treated group described above. The untreated control group will be children, teenagers and young adults with NF1 who do not have a tumour that requires trametinib treatment. All participants in the trametinib-treated and the control groups will attend four Neuropsychology Clinic Visits over a two-year period. During these visits they will complete a number of questionnaires and tests to measure their cognitive function (thinking skills), behaviour and quality of life.

It is hoped this research will help determine if trametinib has an effect on tumours and if there are any additional impacts to cognitive function, behaviour and quality of life.