Recurrent Childhood Medulloblastoma Clinical Trial
Official title:
A Phase II Clinical Trial Evaluating the Efficacy and Safety of GDC-0449 in Children With Recurrent or Refractory Medulloblastoma
This phase II trial studies how well vismodegib works in treating younger patients with recurrent or refractory medulloblastoma. Vismodegib may slow the growth of tumor cells.
PRIMARY OBJECTIVES:
I. Estimate the efficacy of GDC-0449 (vismodegib) treatment for pediatric patients with
recurrent or refractory medulloblastoma, as measured by the sustained objective response
rates for patients without (stratum A) and with (stratum B) evidence of activation of
Hedgehog (Hh) signaling pathway in their tumors.
II. Characterize the pharmacokinetics (plasma) of GDC-0449 in children/adolescents with
refractory medulloblastoma.
III. To document pathologic and genomic methods to identify medulloblastomas with activation
of the Hh signaling pathway.
SECONDARY OBJECTIVES:
I. Document and describe toxicities associated with GDC-0449 administered on a daily
schedule.
II. Estimate the duration of objective response and progression-free survival (PFS).
III. Characterize the pharmacokinetics (cerebrospinal fluid) of GDC-0449 in
children/adolescents with refractory medulloblastoma.
OUTLINE: This is a multicenter study. Patients are stratified according to evidence of
activation of Hedgehog signaling pathway in their tumors (without vs with vs unknown).
Patients receive vismodegib orally (PO) once daily (QD) on days 1-28. Treatment repeats
every 28 days for up to 26 courses in the absence of disease progression or unacceptable
toxicity.
Plasma and cerebrospinal fluid samples are collected periodically for pharmacokinetic and
other correlative studies.
After completion of study treatment, patients are followed up every other month for up to 12
months.
;
Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
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