Ulixertinib in Treating Patients With Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With MAPK Pathway Mutations (A Pediatric MATCH Treatment Trial)

Participation Deadline: 03/30/2026
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Description

PRIMARY OBJECTIVES:

I. To determine the objective response rate (ORR; complete response + partial response) in pediatric patients treated with BVD-523FB (ulixertinib) with advanced solid tumors (including central nervous system [CNS] tumors), non-Hodgkin lymphomas or histiocytic disorders that harbor activating genetic alterations in the MAPK pathway.

SECONDARY OBJECTIVES:

I. To estimate the progression free survival in pediatric patients treated with BVD-523FB (ulixertinib) with advanced solid tumors (including CNS tumors), non-Hodgkin lymphomas or histiocytic disorders that harbor activating genetic alterations in the MAPK pathway.

II. To obtain information about the tolerability of BVD-523FB (ulixertinib) in children and adolescents with relapsed or refractory cancer.

III. To provide preliminary estimates of the pharmacokinetics of BVD-523FB (ulixertinib) in children and adolescents with relapsed or refractory cancer.

EXPLORATORY OBJECTIVES:

I. To evaluate other biomarkers as predictors of response to BVD-523FB (ulixertinib) and specifically, whether tumors that harbor different mutations or fusions will demonstrate differential response to BVD-523FB (ulixertinib) treatment.

II. To explore approaches to profiling changes in tumor genomics over time through evaluation of circulating tumor deoxyribonucleic acid (DNA).

OUTLINE: This is a dose-escalation study.

Patients receive ulixertinib orally (PO) twice daily (BID). Cycles repeat every 28 days for up to 2 years in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up periodically.