E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Relapsed or refractory acute myeloid leukemia |
|
E.1.1.1 | Medical condition in easily understood language |
Rare blood cancer requiring treatment |
|
E.1.1.2 | Therapeutic area | Diseases [C] - Blood and lymphatic diseases [C15] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 17.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10060558 |
E.1.2 | Term | Acute myeloid leukemia recurrent |
E.1.2 | System Organ Class | 100000004864 |
|
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 17.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10054296 |
E.1.2 | Term | Acute myeloid leukemia NOS |
E.1.2 | System Organ Class | 100000004864 |
|
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 |
The primary objective is to compare overall survival (OS) between treatment groups of patients treated with vosaroxin and cytarabine versus patients treated with placebo and cytarabine. |
|
E.2.2 | Secondary objectives of the trial |
- Compare complete remission (CR) rate based on International Working Group (IWG) response criteria, between treatment groups
- Compare safety and tolerability between treatment groups
|
|
E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
The following substudy will be conducted at sites in the United States only:
Electrocardiographic and pharmacokinetic substudy (addendum to protocol VOS-AML-301). Original addendum, dated 03 September 2010.
Approximately 30 patients in each treatment group will participate in this substudy, at approximately 15 to 20 study sites. The effect on cardiac repolarization, as measured by QTcF, will be evaluated for patients treated with vosaroxin (90 mg/m2, the highest dose administered in the study) versus placebo in combination with cytarabine. On days 1 and 4 of induction 1, digital 12‑lead ECGs will be recorded continuously using a Holter monitor before each vosaroxin or placebo dose through 23 hours after the start of study drug administration. The ECGs will be read and the assessment of QTc will be performed by a cardiologist blinded to treatment assignment at a central cardiac safety services facility.
Sparse time‑matched blood samples will be obtained to determine concentrations of vosaroxin, cytarabine, and their relevant metabolites for PK and PK‑PD evaluation. |
|
E.3 | Principal inclusion criteria |
1. Able to understand and provide written informed consent and Health Insurance Portability and Accountability Act (HIPAA) authorization, as appropriate
2. At least 18 years of age
3. Diagnosis of acute myeloid leukemia (AML) by World Health Organization (WHO) classification
4. Relapsed or refractory AML with at least 5% blasts by bone marrow biopsy or aspirate, or at least 1% blasts in peripheral blood, and meeting the criteria for relapsed or refractory AML detailed in section 4.1 of the protocol
5. Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2
6. Local clinical laboratory values as follows:
- Serum creatinine ≤ 2.0 mg/dL
- Total bilirubin ≤ 1.5 x the upper limit of normal (ULN), unless due to Gilbert’s syndrome
- Aspartate aminotransferase (AST) ≤ 2.5 x ULN
- Alanine aminotransferase (ALT) ≤ 2.5 x ULN
7. Left ventricular ejection fraction (LVEF) at least 40% by multiple gated acquisition (MUGA) scan or echocardiogram (ECHO)
8. Clinically significant nonhematologic toxicity after prior chemotherapy has recovered to grade 1 per Common Terminology Criteria for Adverse Events (CTCAE) version 4.03 or newer
9. Females must be surgically or biologically sterile or postmenopausal (amenorrheic for at least 12 months) or if of childbearing potential, must have a negative urine or serum pregnancy test within 14 days before the first vosaroxin or placebo administration, and must agree to use an adequate method of contraception during the study until 30 days after the last treatment. Males must be surgically or biologically sterile or agree to use an adequate method of contraception during the study until 30 days after the last treatment
|
|
E.4 | Principal exclusion criteria |
1. Acute promyelocytic leukemia (APL)
2. More than 2 cycles of induction therapy for AML
3. Refractory to or relapsed ≤ 90 days after any induction or consolidation therapy with an intermediate or high dose cytarabine (IDAC or HIDAC) regimen containing a cumulative dose of ≥ 5 g/m2 cytarabine
4. Transplantation for AML (either allogeneic or autologous) ≤ 90 days of randomization or on active immunosuppressive therapy for graft versus host disease (GVHD) within 2 weeks before the first dose of vosaroxin or placebo
5. Central nervous system (CNS) involvement of active AML
6. Other active malignancies (including other hematologic malignancies) or other malignancies within the last 12 months, except nonmelanoma skin cancer or cervical intraepithelial neoplasia
7. Uncontrolled active infection of any type
- Infections under control with antibiotic treatment are acceptable
- Chronic hepatitis is acceptable
8. Uncontrolled invasive fungal infection (positive blood or tissue culture)
9. History of myocardial infarction (MI), unstable angina, cerebrovascular accident, or transient ischemic attack (CVA/TIA) within 3 months before the first dose of vosaroxin or placebo
10. Prior or current therapy:
- Hydroxyurea or other oral medications to reduce blast count within 24 hours before the first dose of vosaroxin or placebo
- Treatment with an investigational product within 14 days before the first dose of vosaroxin or placebo, or not recovered from all acute effects of previously administered investigational products
11. Hemodialysis or peritoneal dialysis required
12. Prior exposure to vosaroxin
13. Pregnant or breastfeeding
14. Any other medical, psychological, or social condition that may interfere with study participation or compliance, or compromise patient safety in the opinion of the investigator or medical monitor |
|
E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint is overall survival (OS) in the intent-to-treat population. Analysis of OS will be based on the log-rank test weighted to account for the adaptive design. Kaplan-Meier methods will be used to estimate OS for each treatment group. Sensitivity analyses will be performed to assess the effect of subsequent therapy, and specifically transplantation, on OS.
One formal interim efficacy analysis will be performed after reaching 187 events (deaths) (50% of the required number of 375 events). At the discretion of the data and safety monitoring board (DSMB), one of the following actions will be taken at the interim analysis: terminate for efficacy, terminate for futility, increase the accrual to a maximum of 750 patients and extend the observations in the study beyond the prespecified 375 events, or continue the study as planned.
The primary safety endpoint is 30- and 60-day all cause mortality, summarized with point estimates and 95% confidence intervals. |
|
E.5.1.1 | Timepoint(s) of evaluation of this end point |
The primary enpoint analyses will be conducted after the required number of events (deaths) has occured (357).
One formal interim efficacy analysis will be performed after reaching 187 events (deaths) (50% of the required number of 375 events). At the discretion of the data and safety monitoring board (DSMB), one of the following actions will be taken at the interim analysis: terminate for efficacy, terminate for futility, increase the accrual to a maximum of 750 patients and extend the observations in the study beyond the prespecified 375 events, or continue the study as planned.
|
|
E.5.2 | Secondary end point(s) |
The secondary efficacy endpoint is complete remission rate, defined as the percentage of patients whose response is a complete remission based on IWG response criteria.
The secondary safety endpoint is the incidence of AEs. |
|
E.5.2.1 | Timepoint(s) of evaluation of this end point |
The primary enpoint analyses will be conducted after the required number of events (deaths) has occured (357).
One formal interim efficacy analysis will be performed after reaching 187 events (deaths) (50% of the required number of 375 events). At the discretion of the data and safety monitoring board (DSMB), one of the following actions will be taken at the interim analysis: terminate for efficacy, terminate for futility, increase the accrual to a maximum of 750 patients and extend the observations in the study beyond the prespecified 375 events, or continue the study as planned.
|
|
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 | No |
E.6.7 | Pharmacodynamic | No |
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) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
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 | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 7 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 62 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Australia |
Austria |
Belgium |
Canada |
Czech Republic |
France |
Germany |
Hungary |
Italy |
Korea, Republic of |
New Zealand |
Poland |
Spain |
United Kingdom |
United States |
|
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
|
After end of treatment, follow up will document survival status for all patients and disease status for patients in contiuing CR, CRp, or CRi. In addition, any nonprotocol treatments for AML will be recorded. Follow-up after the end of treatment will continue until notification that the required nymber of events (deaths) has occurred. Long-term follow-up is to document survival status on all ongoing patients after notification that the required number of events (deaths) has occured. |
|
E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 7 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 7 |
E.8.9.2 | In all countries concerned by the trial months | 0 |
E.8.9.2 | In all countries concerned by the trial days | 0 |