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A Study of Eltrombopag or Placebo in Combination With Azacitidine in Subjects With International Prognostic Scoring System (IPSS) Intermediate-1, Intermediate-2 or High-risk Myelodysplastic Syndromes (MDS)

sunnuntai 12. marraskuuta 2017 päivittänyt: Novartis Pharmaceuticals

A Randomized, Double-blind, Placebo-controlled, Phase III, Multi-centre Study of Eltrombopag or Placebo in Combination With Azacitidine in Subjects With IPSS Intermediate-1, Intermediate 2 and High-risk Myelodysplastic Syndromes (MDS) SUPPORT: A StUdy of eltromboPag in myelodysPlastic SyndrOmes Receiving azaciTidine

Eltrombopag olamine (SB-497115-GR) is an orally bioavailable, small molecule thrombopoietin receptor agonist that may be beneficial in medical disorders associated with thrombocytopenia. Eltrombopag has been shown to increase platelet counts in patients with thrombocytopenia from various etiologies (Idiopathic thrombocytopenic purpura [ITP], liver disease, aplastic anemia and chemotherapy induced thrombocytopenia). Approximately 350 subjects will be randomized in a 1:1 ratio (175 into the eltrombopag arm and 175 into the placebo arm). Approximately 55 subjects will be enrolled into the azacitidine. Subjects with intermediate-1, intermediate-2 or high risk MDS by IPSS, and baseline platelet count of <75 Giga (10^9) per liter (Gi/L) will only be enrolled. This is a randomized, double-blind, parallel group, placebo-controlled study designed to explore the platelet supportive care effects of eltrombopag versus placebo in combination with the standard of care hypomethylating agent, azacitidine. The primary objective of this study is to determine the effect of eltrombopag versus placebo on the proportion of subjects who are platelet transfusion free during the first 4 cycles of azacitidine therapy. Key secondary endpoints include overall survival, disease response, and disease progression.

Tutkimuksen yleiskatsaus

Tila

Lopetettu

Ehdot

Interventio / Hoito

Opintotyyppi

Interventio

Ilmoittautuminen (Todellinen)

356

Vaihe

  • Vaihe 3

Yhteystiedot ja paikat

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Osallistumiskriteerit

Tutkijat etsivät ihmisiä, jotka sopivat tiettyyn kuvaukseen, jota kutsutaan kelpoisuuskriteereiksi. Joitakin esimerkkejä näistä kriteereistä ovat henkilön yleinen terveydentila tai aiemmat hoidot.

Kelpoisuusvaatimukset

Opintokelpoiset iät

18 vuotta ja vanhemmat (Aikuinen, Vanhempi Aikuinen)

Hyväksyy terveitä vapaaehtoisia

Ei

Sukupuolet, jotka voivat opiskella

Kaikki

Kuvaus

Inclusion Criteria:

  • Age >=18 years (For subjects in Taiwan, Age >= 20 years)
  • MDS by World Health Organization (WHO) or French-American-British (FAB) classification
  • Intermediate 1, intermediate 2 or high risk MDS by IPSS
  • At least one platelet count < 75 Gi/L
  • Eastern Cooperative Oncology Group (ECOG) Status 0-2
  • Adequate baseline organ function defined by the criteria below: total bilirubin =< 1.5x the upper limit of normal (ULN) except for Gilbert's syndrome or cases clearly not indicative of inadequate liver function (i.e. elevation of indirect [haemolytic] bilirubin in the absence of alanine aminotransferase [ALT] abnormality); ALT =< 2.5xULN; creatinine =< 2.5xULN
  • Subjects with a corrected QT interval (QTc) <450 milliseconds (msec) or <480msec for subjects with bundle branch block. The QTc is the QT interval corrected for heart rate according to Fridericia's formula (QTcF), machine or manual overread. For subject eligibility and withdrawal, QTcF will be used. For purposes of data analysis, QTcF will be used. The QTc should be based on single or averaged QTc values of triplicate electrocardiograms (ECGs) obtained over a brief recording period
  • Subject is able to understand and comply with protocol requirements and instructions
  • Subject has signed and dated informed consent
  • Women must be either of non-child bearing potential, or women with child-bearing potential and men with reproductive potential must be willing to practice acceptable methods of birth control during the study
  • Women of childbearing potential must have a negative serum or urine pregnancy test within 7 days of first dose of study treatment and agree to use effective contraception during the study and for 3 months following the last dose of study treatment
  • Men with a female partner of childbearing potential must have either had a prior vasectomy or agree to use effective contraception from time of randomization until 16 weeks after the last dose of study treatment
  • French subjects: In France, a subject will be eligible for inclusion in this study only if either affiliated to or a beneficiary of a social security category

Exclusion Criteria:

  • Previous treatment with hypomethylating agent or induction chemotherapy for MDS
  • Proliferative type chronic myelomonocytic leukemia with white blood cell count >12 Gi/L at any time during the 28 days before Day 1
  • History of treatment with eltrombopag, romiplostim or other thrombopoietin receptor (TPO-R) agonists
  • Previous allogeneic stem-cell transplantation
  • Known thrombophilic risk factors. Exception: Subjects for whom the potential benefits of participating in the study outweigh the potential risks of thromboembolic events, as determined by the investigator
  • Treatment with an investigational drug within 30 days or 5 half-lives (whichever is longer) preceding the first dose of investigational product (eltrombopag/placebo)
  • Active and uncontrolled infections, including hepatitis B or C
  • Human Immunodeficiency Virus (HIV) infection
  • Known immediate or delayed hypersensitivity reaction or idiosyncrasy to drugs chemically related to eltrombopag or its excipient, or azacitidine, that contraindicates the subjects' participation
  • Pregnant or lactating female
  • Any serious and/or unstable pre-existing medical condition (including any advanced malignancy other than the disease under study), psychiatric disorder, or other conditions that could interfere with subject's safety, obtaining informed consent or compliance with the study procedures
  • French subjects: the French subject has participated in any study using an investigational drug during the previous 30 days

Opintosuunnitelma

Tässä osiossa on tietoja tutkimussuunnitelmasta, mukaan lukien kuinka tutkimus on suunniteltu ja mitä tutkimuksella mitataan.

Miten tutkimus on suunniteltu?

Suunnittelun yksityiskohdat

  • Ensisijainen käyttötarkoitus: Hoito
  • Jako: Satunnaistettu
  • Inventiomalli: Rinnakkaistehtävä
  • Naamiointi: Kaksinkertainen

Aseet ja interventiot

Osallistujaryhmä / Arm
Interventio / Hoito
Kokeellinen: Eltrombopag
Eligible subject will receive a starting dose of eltrombopag of 200 milligrams (mg) (100 mg for subjects of East Asian heritage). Dose modifications of eltrombopag will be permitted by 100 mg increments (50 mg increments for East Asians) to a lowest dose of 100 mg (50 mg for East Asian heritage) or a maximum dose of 300 mg (150 mg for East Asian heritage) in order to maintain platelet counts at a safe and effective level (i.e. a level sufficient to avoid platelet transfusions and bleeding events). Subjects will receive azacitidine 75 mg/meter^2 subcutaneously once daily for 7 days (+/- 3 day treatment window permitted) every 28 days, for at least 6 cycles if tolerated and until they are no longer receiving benefit (defined as at least stable disease per the investigator's assessment) or until disease progression, death, or unacceptable toxicity/adverse event. The subject may receive eltrombopag daily for the full 28 days each cycle for as long as the subject is receiving azacitidine
Lääke: Eltrombopag
Eltrombopag will be round film-coated tablets containing eltrombopag equivalent to 50 mg (white to off-white), 200 mg and 300 mg (green) of eltrombopag free acid
Lääke: Azacitidine
Subcutaneous Injection (IV if local standard)
Placebo Comparator: Placebo
Eligible subject will receive eltrombopag matching placebo. Subjects will receive azacitidine 75 mg/meter^2 subcutaneously once daily for 7 days (+/- 3 day treatment window permitted) every 28 days, for at least 6 cycles if tolerated and until they are no longer receiving benefit (defined as at least stable disease per the investigator's assessment) or until disease progression, death, or unacceptable toxicity/adverse event. The subject may receive eltrombopag daily for the full 28 days each cycle for as long as the subject is receiving azacitidine
Lääke: Azacitidine
Subcutaneous Injection (IV if local standard)
Lääke: Placebo
Eltrombopag matching placebo tablets
Lääke: Placebo
Eltrombopag matching placebo tablets will be supplied

Mitä tutkimuksessa mitataan?

Ensisijaiset tulostoimenpiteet

Tulosmittaus
Toimenpiteen kuvaus
Aikaikkuna
Number of Participants Who Were Platelet Transfusion Independent During Cycles 1-4 of Azacitidine Therapy
Aikaikkuna: 4 cycles (Cycle = 28 days)
A subject is defined as being platelet transfusion independent if they received no platelet transfusions within the first 4 cycles of treatment with azacitidine. Subjects who died or withdrew from investigational product within the first four cycles were treated as failures (i.e. not transfusion independent) in the analysis
4 cycles (Cycle = 28 days)

Toissijaiset tulostoimenpiteet

Tulosmittaus
Toimenpiteen kuvaus
Aikaikkuna
Overall Survival (OS)
Aikaikkuna: Randomization until death or end of study, approximately 2 years
Overall survival is defined as the time from randomization until death due to any cause and deaths have been presented. Subjects still alive at the time of the analysis and subjects who have withdrawn from the study will be censored at the time of last contact
Randomization until death or end of study, approximately 2 years
Summary of Progression Free Survival From Investigator Assessment (ITT)
Aikaikkuna: First day of each cycle (Cycles 3+), at the end of therapy visit and every 3 months in follow-up for approximately 2 years
Progression-free survival, defined as the time from randomization until either disease progression or death. The modified 2006 IWG criteria for MDS used for progression assessment For patients with: Less than 5% BM blasts: ≥ 50% increase in blasts to > 5% blasts; 5% - <10% BM blasts: ≥ 50% increase to > 10% blasts; 10% - <20% BM blasts: ≥ 50% increase to > 20% blasts; 20% - 30% BM blasts: ≥ 50% increase to > 30% blasts
First day of each cycle (Cycles 3+), at the end of therapy visit and every 3 months in follow-up for approximately 2 years
Summary of Progression Free Survival From Central Review (ITT)
Aikaikkuna: First day of each cycle (Cycles 3+), at the end of therapy visit and every 3 months in follow-up for approximately 2 years

Progression-free survival, defined as the time from randomization until either disease progression or death. The modified 2006 IWG criteria for MDS used for progression assessment For patients with:

Less than 5% BM blasts: ≥ 50% increase in blasts to > 5% blasts; 5% - <10% BM blasts: ≥ 50% increase to > 10% blasts; 10% - <20% BM blasts: ≥ 50% increase to > 20% blasts; 20% - 30% BM blasts: ≥ 50% increase to > 30% blasts
First day of each cycle (Cycles 3+), at the end of therapy visit and every 3 months in follow-up for approximately 2 years
Summary of AML Progression From Investigator Assessment and Central Review (ITT)
Aikaikkuna: First day of each cycle (Cycles 3+), at the end of therapy visit and every 3 months in follow-up for approximately 2 years

Progression to AML in MDS patients with baseline bone marrow blast < 20% was defined as meeting definition of disease progression according to the modified 2006 IWG response criteria for MDS with the additional requirement that bone marrow blast or peripheral blast increases from < 20% at baseline to ≥ 20% postbaseline. Progression assessment For patients with:

Less than 5% BM blasts: ≥ 50% increase in blasts to > 5% blasts; 5% - <10% BM blasts: ≥ 50% increase to > 10% blasts; 10% - <20% BM blasts: ≥ 50% increase to > 20% blasts; 20% - 30% BM blasts: ≥ 50% increase to > 30% blasts
First day of each cycle (Cycles 3+), at the end of therapy visit and every 3 months in follow-up for approximately 2 years
Best Disease Response From Investigator Assessment (ITT)
Aikaikkuna: At end of Cycle 6 (cycle=28 days) or end of therapy, whichever came first
Best disease response is categorized as complete remission (CR), partial remission (PR), or marrow CR, stable disease, disease progression, or as non-evaluable; according to modified 2006 International Working Group (IWG) criteria for MDS
At end of Cycle 6 (cycle=28 days) or end of therapy, whichever came first
Best Disease Response From Central Review (ITT)
Aikaikkuna: At end of Cycle 6 (cycle=28 days) or end of therapy, whichever came first
Best disease response is categorized as complete remission (CR), partial remission (PR), or marrow CR, stable disease, disease progression, or as non-evaluable; according to modified 2006 International Working Group (IWG) criteria for MDS
At end of Cycle 6 (cycle=28 days) or end of therapy, whichever came first
Hematologic Improvement (HI) in Platelets, Neutrophils, and Hemoglobin Based on the Modified IWG Criteria for MDS (ITT)
Aikaikkuna: From Day 1 to 4-week follow-up (samples collected weekly in Cycle 1, Days 1 and 15 in Cycles 2-6 and Day 1 of Cycles >=7)
HI based on the modified IWG criteria for MDS. HI - Platelets (BL <100Gi/L), response criteria= BL <20: increase to>20 and 100% at least for 56 days or BL >=20: absolute increase of >=30. HI - Neutrophils (BL <1.0 Gi/L), response criteria=100% increase and an absolute increase >0.5 Gi/L over BL for at least 56 days. HI-Hemoglobin (BL <g/dL), response criteria=Hgb increase by >=1.5 g/dL over BL, RBC transfusions(given for Hgb<=9.0) reduced by >=4 per 8w from BL
From Day 1 to 4-week follow-up (samples collected weekly in Cycle 1, Days 1 and 15 in Cycles 2-6 and Day 1 of Cycles >=7)
Number of Participants Who Were Platelet Transfusion Independent (ITT Set)
Aikaikkuna: From Day 1 to end of study treatment up to approximately 2 years
Platelet transfusion independence is defined for each cycle as the number of participants who continue to the end of a cycle without requiring a platelet transfusion
From Day 1 to end of study treatment up to approximately 2 years
Bleeding Adverse Events (AEs) >= Grade 3
Aikaikkuna: From Day 1 to 4-week follow-up up to approximately 2 years
Bleeding will be assessed by recording AEs or serious adverse events (SAEs) as graded according to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v4.0
From Day 1 to 4-week follow-up up to approximately 2 years
Number of of Subjects With Azacitidine Dose Delays, Dose Reductions, Interruptions
Aikaikkuna: From Day 1 to 4-week follow-up up to approximately 2 years
The proportion of subjects with any delay, reduction or interruption in dosage of Azacitidine excluding those for non-medical reasons will be analyzed
From Day 1 to 4-week follow-up up to approximately 2 years
Response Levels in All Domains of Euroquol-5 Dimensions of Health, 3 Response Levels (EQ-5D-3L™)
Aikaikkuna: From Day 1 to 4-week follow-up up to approximately 2 years
The EQ-5D is a general health status and health utility measure which captures 5 dimensions of health state: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. (EQ-5D is a trademark of the Stichting EuroQol Group) . C=cycle, D=Day
From Day 1 to 4-week follow-up up to approximately 2 years
Functional Assessment of Chronic Disease Therapy-fatigue Subscale (FACIT-Fatigue) (ITT)
Aikaikkuna: From Day 1 to 4-week follow-up (Approximate median 9 Cycles+4 weeks follow-up) up to approximately 2 years
The FACIT-Fatigue subscale measures severity and impact of fatigue on functioning and Health Related QoL experienced in the past 7 days. Scale is a 13 item measure of fatigure. Items are scored on a 0-4 response scale ranging from "not at all" to "very much so". All items are summed to create a single fatigure score with a range from 0 to 52. Items are reverse scored when appropriate to provide a scale in which higher scores represent better functioning or less fatiigue (The FACIT Fatigue Scale is owned by David Cella, Ph.D.)
From Day 1 to 4-week follow-up (Approximate median 9 Cycles+4 weeks follow-up) up to approximately 2 years
Medical Resource Utilization (MRU): Event -Hospitalizations Inpatient and Outpatient
Aikaikkuna: From Day 1 to 4-week follow-up (Approximate median 9 Cycles+4 weeks follow-up) up to approximately 2 years
MRU data will be collected for each subject. Events corresponding to unscheduled (not scheduled per protocol) hospitalizations
From Day 1 to 4-week follow-up (Approximate median 9 Cycles+4 weeks follow-up) up to approximately 2 years
Medical Resource Utilization (MRU): Event and Use of Site Specific Medical Resources - Non-study Laboratory Tests
Aikaikkuna: From Day 1 to 4-week follow-up (Approximate median 9 Cycles+4 weeks follow-up) up to approximately 2 years
MRU data will be collected for each subject. Events corresponding to unscheduled (not scheduled per protocol) hospitalizations, office visits including consultations, laboratory and diagnostic tests (lab results, imaging etc.), and procedures prior to therapy initiation and during therapy will be collected
From Day 1 to 4-week follow-up (Approximate median 9 Cycles+4 weeks follow-up) up to approximately 2 years
Medical Resource Utilization (MRU): Use of Site Specific Medical Resources
Aikaikkuna: From Day 1 to 4-week follow-up (Approximate median 9 Cycles+4 weeks follow-up) up to approximately 2 years
MRU data will be collected for each subject. Events corresponding to unscheduled (not scheduled per protocol) hospitalizations, office visits including consultations, laboratory and diagnostic tests (lab results, imaging etc.), and procedures prior to therapy initiation and during therapy will be collected
From Day 1 to 4-week follow-up (Approximate median 9 Cycles+4 weeks follow-up) up to approximately 2 years
Summary of Post-Hoc Estimates of Steady-state Eltrombopag Cmax and Cmin Pharmacokinetic Parameters for a 50 mg Dose
Aikaikkuna: Cycle 1, Week 2: Pre-dose, 1.5 and 3 hour post dose; Cycle 1, Week 3: 4, 5.5, and 7 hours post dose
Eltrombopag concentrations were analyzed using a population PK model along with data from other studies in healthy volunteers and in patients with MDS and/or AML. Post-hoc PK parameters were derived. Only patients from this study were included (163)
Cycle 1, Week 2: Pre-dose, 1.5 and 3 hour post dose; Cycle 1, Week 3: 4, 5.5, and 7 hours post dose
Summary of Post-Hoc Estimates of Steady-state Eltrombopag AUC0 Infinity Pharmacokinetic Parameters for a 50 mg Dose
Aikaikkuna: Cycle 1, Week 2: Pre-dose, 1.5 and 3 hour post dose; Cycle 1, Week 3: 4, 5.5, and 7 hours post dose
Eltrombopag concentrations were analyzed using a population PK model along with data from other studies in healthy volunteers and in patients with MDS and/or AML. Post-hoc PK parameters were derived. Only patients from this study were included (163)
Cycle 1, Week 2: Pre-dose, 1.5 and 3 hour post dose; Cycle 1, Week 3: 4, 5.5, and 7 hours post dose
AUC0-infinity -Pharmacokinetic(s) Parameter of Azacitidine
Aikaikkuna: Cycle 2 Day 1: Pre-dose, 15 min, 0.5, 1, 2 and 4 hr post dose
An analysis of variance (ANOVA) on AUC0-infinity. The PK parameters were log transformed prior to analysis. The model included treatment as a fixed effect. Point estimates and their associated 90% CI were constructed for the differences in PK parameter values. The point estimates and their associated 90% CI were then back transformed to provide point estimates and 90% CI for the azacitidine + eltrombopag:azacitidine + placebo PK parameter ratios.
Cycle 2 Day 1: Pre-dose, 15 min, 0.5, 1, 2 and 4 hr post dose
Cmax -Pharmacokinetic Parameter of Azacitidine
Aikaikkuna: Cycle 2 Day 1: Pre-dose, 15 min, 0.5, 1, 2 and 4 hr post dose
An analysis of variance (ANOVA) on Cmax . The PK parameters were log transformed prior to analysis. The model included treatment as a fixed effect. Point estimates and their associated 90% CI were constructed for the differences in PK parameter values. The point estimates and their associated 90% CI were then back transformed to provide point estimates and 90% CI for the azacitidine + ltrombopag:azacitidine + placebo PK parameter ratios.
Cycle 2 Day 1: Pre-dose, 15 min, 0.5, 1, 2 and 4 hr post dose

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