A Pilot Study of Larotrectinib for Newly-Diagnosed High-Grade Glioma With NTRK Fusion

Exclusion Criteria

• •Performance Level: Karnofsky ≥ 50% for patients \> 16 years of age and Lansky ≥ 50 for patients ≤ 16 years of age (See Appendix I). Patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score.
• •Organ Function Requirements: Adequate Bone Marrow Function Defined as:
• •Peripheral absolute neutrophil count (ANC) ≥ 1000/mm3 Platelet count ≥ 100,000/mm3 (transfusion independent, defined as not receiving platelet transfusions for at least 7 days prior to enrollment) Hemoglobin \>8 g/dL (may receive transfusions)
• •\- Adequate Renal Function Defined as: Serum creatinine within normal institutional limits, or Creatinine clearance or radioisotope GFR ≥ 70ml/min/1.73 m2
• •\- Adequate Liver Function Defined as: Total bilirubin ≤ 2.5 × institutional upper limit of normal AST(SGOT)/ALT(SGPT) ≤ 2.5 × institutional upper limit of normal
• •\- Adequate Pulmonary Function Defined as: Pulse oximetry \> 94% on room air if there is clinical indication for determination (e.g. dyspnea at rest).
• •\- Adequate Neurologic Function Defined as: Patients with seizure disorder may be enrolled if on anticonvulsants and well controlled. See Section 5.5.2 and Appendix III for EIAED guidelines.
• •\- Informed Consent: All patients and/or their parents or legally authorized representatives must sign a written informed consent. Assent, when appropriate, will be obtained according to institutional guidelines.
• •Pregnancy or Breast-Feeding: Pregnant or breast-feeding women will not be entered on this study due to unknown risks of fetal and teratogenic adverse events as seen in animal/human studies. Pregnancy tests must be obtained in girls who are post-menarchal. Males or females of reproductive potential may not participate unless they have agreed to use an effective contraceptive method.
• •Infection: Patients must not have any active, uncontrolled systemic bacterial, viral or fungal infection.
• •Patients must not have malabsorption syndrome or other condition affecting oral absorption.
• •Patients must not be receiving any treatment with a strong cytochrome P450 3A4 (CYP3A4) inhibitor or inducer. (See Appendix III.) Strong inducers or inhibitors of CYP3A4 should be avoided from 7 days prior to enrollment to the end of the study.