E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Refractory solid tumors
Ph+ leukemia |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Cancer [C04] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10065252 |
E.1.2 | Term | Solid tumor |
E.1.2 | System Organ Class | 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps) |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10034877 |
E.1.2 | Term | Philadelphia chromosome positive |
E.1.2 | System Organ Class | 10022891 - Investigations |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
• Describe and define the toxicities, estimate the MTD, and recommend a Phase 2 dose of dasatinib administered as an oral agent given twice daily in children with refractory solid tumors.
• Describe and define the toxicities of dasatinib administered as an oral agent given twice daily in children with imatinib resistant Ph+ leukemia.
• Characterize the PK of dasatinib in children with refractory solid tumors and imatinib resistant Ph+ leukemia. |
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E.2.2 | Secondary objectives of the trial |
• Preliminarily define the antitumor activity of dasatinib in children with refractory solid tumors within the confines of a Phase 1 study.
• Obtain pilot data on the activity of dasatinib administered in children with Ph+ leukemia.
• Determine the phosphotyrosine state of SRC and ABL substrates and correlate this with dasatinib dosage and antitumor activity (pharmacodynamics study). |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Greater than 12 months and less than or equal to 21 years of age at the time of study entry
2. Histologic verification of solid tumor malignancy at original diagnosis or relapse, or had imatinib resistant Ph+ ALL, or CML. Subjects with tumors of the central nervous system were not eligible.
Imatinib resistance in Ph+ CML was defined as any of the following:
a. Increasing white blood cell (WBC) or platelet count while on imatinib therapy
b. Lack of any cytogenetic response after an adequate duration of imatinib therapy, as defined by failure to achieve a complete hematological response after 3 months of imatinib therapy OR failure to achieve a partial or complete cytogenetic response (ie, ≤ 35% Ph+) after 6 months of imatinib therapy
c. Appearance of accelerated or blastic features while on imatinib therapy
d. Reappearance of Ph+ clones after an initial complete cytogenetic response to imatinib
e. An increase in Ph+ cells of > 30% in peripheral blood or bone marrow cytogenetics while on imatinib therapy
f. Imatinib intolerance as defined by development of an AE requiring discontinuation of imatinib therapy
3. Solid tumors with measurable or evaluable disease. Leukemia with measurable disease: for subjects with CML, hematologic, cytogenetic, and molecular studies determined measurable disease. For subjects with ALL, bone marrow blast percentage determined measurable disease.
4. Current disease state for which there is no known curative therapy or one proven to prolong survival with an acceptable quality of life
5. Karnofsky score ≥ 50% for subjects > 10 years of age or Lansky score ≥ 50 for subjects ≤ 10 years of age
6. Organ function requirements
a. Adequate bone marrow function
b. Adequate renal function
c. Adequate liver function
d. Adequate cardiac function
e. Adequate pulmonary function
7. Signed subject informed consent |
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E.4 | Principal exclusion criteria |
Subjects who met any of the following criteria were excluded from the study.
1. Pregnant or breast-feeding.
2. Use of the following concomitant medications during the study:
a. Growth factors that support the number or function of platelets or white cells within 7 days of study entry
b. Another investigational drug
c. Other anticancer agents
d. Enzyme-inducing anticonvulsants
e. Antithrombotic and antiplatelet agents
f. Specific CYP3A4 inhibitors
3. Uncontrolled infection
4. Unable to swallow oral or liquid medication
5. Human immunodeficiency virus-positive subjects whose highly active antiretroviral therapy regimen could interact with dasatinib
6. Unable, in the opinion of the investigator, to comply with the safety monitoring requirements of the study |
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E.5 End points |
E.5.1 | Primary end point(s) |
Safety:
Safety/toxicity is assessed by adverse events (AEs), which are graded according to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE), Version 3.0.
Pharmacokinetics:
Pharmacokinetics of dasatinib and BMS-582691 are derived from plasma concentration versus time. The single dose PK parameters to be assessed included:
- Cmax Maximum observed plasma concentration
- Tmax Time of maximum observed plasma concentration
- AUC(0-T) Area under the plasma concentration-time curve from zero to the last time of the last quantifiable concentration
- AUC(INF) Area under the plasma concentration-time curve from time zero extrapolated to infinite time
- T1/2 Plasma half-life |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
On an ongoing basis during each course. One course of therapy is equal to 28 days. A course could be repeated every 28 days and repeated 24 times, for a total of 24 courses. |
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E.5.2 | Secondary end point(s) |
Efficacy:
Efficacy evaluations include response rate for solid tumors using Response Evaluation Criteria in Solid Tumors (RECIST) from the NCI for assessment of radiographic response. Overall response assessment is classified using computed tomography (CT) or magnetic resonance imaging (MRI).
For subjects with leukemia Ph+ CML, efficacy is determined by hematologic response (based on white blood cell [WBC] count), cytogenetic response (based on percentage of Ph+ chromosome positive metaphase cells in bone marrow), and molecular response (based on resolution of bone marrow and blood morphologic abnormalities, absence of Ph chromosome by standard cytogenetic
analysis, and absence of BCR-ABL rearrangement by reverse transcription-polymerase chain reaction [RT-PCR] analysis). For subjects with Ph+ ALL, efficacy was evaluated based on percentage of blast cells and marrow cellularity.
Pharmacodynamics:
Peripheral blood mononuclear cells were to be evaluated for phosphorylation of SRC family kinases, ABL, and their substrates and for gene expression changes. These evaluations were also to be performed on blast cells for leukemia samples collected. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
At the end of each course. One course of therapy is equal to
28 days. A course could be repeated every 28 days and repeated 24 times, for a total of 24 courses. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | Yes |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | Yes |
E.7.1.3.1 | Other trial type description |
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E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
Will this trial be conducted at a single site globally?
| No |
E.8.4 | Will this trial be conducted at multiple sites globally? | Yes |
E.8.6 Trial involving sites outside the EEA |
E.8.6.2 | Trial being conducted completely outside of the EEA | Yes |
E.8.6.3 | Specify the countries outside of the EEA in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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The end of trial if the last patient last visit 30 days observation for toxicities. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 10 |
E.8.9.2 | In all countries concerned by the trial days | 15 |