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)

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