Vorinostat and Isotretinoin in Treating Patients With High-Risk Refractory or Recurrent Neuroblastoma

2015-04-22 13:38:22 | BioPortfolio


This phase I trial is studying the side effects and the best dose of vorinostat when given together with isotretinoin to see how well it works in treating patients with high-risk refractory or recurrent neuroblastoma. Vorinostat may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Isotretinoin may help vorinostat work better by making tumor cells more sensitive to the drug. Giving vorinostat together with isotretinoin may be an effective treatment for neuroblastoma.



I. To determine the maximum tolerated dose (MTD) of vorinostat pediatric suspension administered daily 4 times per week orally for two weeks, in combination with twice daily 13-cis-retinoic acid ([cisRA], isotretinoin) orally for 14 days to children with refractory or recurrent neuroblastoma.

II. To define the toxicities of vorinostat administered in combination with cisRA.


I. To determine the pharmacokinetics of vorinostat given as a pediatric suspension.

II. To describe the relationship of vorinostat pharmacokinetics to the occurrence of systemic toxicity.

III. To determine the pharmacokinetics of cisRA given in combination with vorinostat.

IV. To describe histone acetylation levels in peripheral blood mononuclear cells after different doses of vorinostat.

V. To describe, within the context of a Phase I study, the response rate of vorinostat combined with cisRA in patients with recurrent/refractory neuroblastoma.

VI. To describe the toxicity and response rate of vorinostat at the determined maximal tolerated dose combined with cisRA in patients ages 22-30 years of age at study entry with recurrent/refractory neuroblastoma.

OUTLINE: This is a dose-escalation study of vorinostat.

Patients receive isotretinoin orally (PO) twice daily (BID) on days 1-14, PO suspension* of vorinostat once daily (QD) on days 1-4 of course 1, and capsules of vorinostat PO QD on days 1-4 and 8-11 of course 2 and subsequent courses. Treatment repeats every 28 days for up to 24 courses in the absence of disease progression or unacceptable toxicity.

EXPANSION COHORT 1 (=< 21 years of age): Once the maximum-tolerated dose (MTD) has been determined, patients are treated at that dose level as above.

EXPANSION COHORT 2 (22-30 years of age): Patients receive isotretinoin as above and vorinostat at the MTD on days 1-3 and 8-10.

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

NOTE: *Patients less than 10 years of age are encouraged to continue to use oral suspension beyond course 1.

Study Design

Endpoint Classification: Safety Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment


Localized Unresectable Neuroblastoma


Isotretinoin, Laboratory Biomarker Analysis, Pharmacological Study, Vorinostat


Children's Hospital Los Angeles
Los Angeles
United States


Active, not recruiting


National Cancer Institute (NCI)

Results (where available)

View Results


Published on BioPortfolio: 2015-04-22T13:38:22-0400

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Medical and Biotech [MESH] Definitions

Laboratory processes prior to specimen analysis. These processes include study design, compliance of the subjects investigated, compliance in adherence to protocols, choice of specimens utilized and sample collection.

Techniques which study entities using their topological, geometric, or geographic properties and include the dimension of time in the analysis.

A type of analysis in which subjects in a study group and a comparison group are made comparable with respect to extraneous factors by individually pairing study subjects with the comparison group subjects (e.g., age-matched controls).

Absolute, comparative, or differential costs pertaining to services, institutions, resources, etc., or the analysis and study of these costs.

A set of techniques used when variation in several variables has to be studied simultaneously. In statistics, multivariate analysis is interpreted as any analytic method that allows simultaneous study of two or more dependent variables.

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