Conditions: Thrombocytopaenia
Keywords: acute myeloid leukemia (AML) acute myelogenous leukemia (AML) acute non lymphocytic leukemia (ANLL) myeloproliferative disease (MDS) myelodysplastic syndrome ( secondary acute myeloid leukemia) refractory acute myeloid leukemia
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 162
Healthy volunteers: no

Brief summary:
This was a worldwide, three-part (Part 1: open-label, Part 2: randomized, double-blind, Part 3: extension), multi-center study to evaluate the effect of eltrombopag in subjects with myelodysplastic syndromes (MDS) or acute myeloid leukemia (AML) who have thrombocytopenia due to bone marrow insufficiency from their underlying disease or prior chemotherapy. This objective was assessed by a composite primary endpoint that consists of the following: the proportion of ≥Grade 3 hemorrhagic adverse events, or platelet counts \<10 Gi/L, or platelet transfusions. Patients with MDS or AML and Grade 4 thrombocytopenia due to bone marrow insufficiency from their underlying disease or prior chemotherapy were enrolled in the study. No low or intermediate-1 risk MDS subjects were enrolled in the study. Subjects must have had at least one of the following during the 4 weeks prior to enrolment: platelet count \<10 Gi/L, platelet transfusion, or symptomatic hemorrhagic event. Supportive standard of care (SOC), including hydroxyurea, was allowed as indicated by local practice throughout the study. The study had 3 sequential parts. Subjects who were enrolled in Part 1 (open-label) cannot be enrolled in Part 2 of the study (randomized, double-blind); however, subjects who completed the treatment period for Part 1 or Part 2 (8 and 12 weeks, respectively) continued in Part 3 (extension) if the investigator determined that the subject was receiving clinical benefit on treatment.

Detailed description:

Arms:
arm 1: 100 mg daily (50 mg for subjects of East Asian heritage), intrasubject dose escalations to a maximum dose 300 mg (150 mg for subjects of East Asian heritage) are allowed. arm 2: 100 mg daily (50 mg for subjects of East Asian heritage), intra-subject dose escalations to a maximum dose of 300 mg (150 mg for subjects of East Asian heritage) arm 3: 100 mg matching placebo daily (50 mg for subjects of East Asian heritage), intra-subject dose escalations to a maximum dose of 300 mg matching placebo (150 mg for subjects of East Asian heritage) arm 4: 100 mg daily (50 mg for subjects of East Asian heritage), intra-subject dose escalations to a maximum dose of 300 mg (150 mg for subjects of East Asian heritage)

Interventions: intervention 1: eltrombopag intervention 2: placebo
Intervention descriptions: intervention 1: 100 mg daily (50 mg for subjects of East Asian heritage), intra-subject dose escalations to a maximum dose of 300 mg (150 mg for subjects of East Asian heritage) intervention 2: 100 mg matching placebo daily (50 mg for subjects of East Asian heritage), intra-subject dose escalations to a maximum dose of 300 mg matching placebo (150 mg for subjects of East Asian heritage)

Protocol document: