Immune thrombocytopenia is an immune condition where antibodies are produced against platelets. Eltrombopag
is a thrombopoietin receptor agonist that stimulates and promotes platelet production approved for treating thrombocytopenia in patients with chronic immune thrombocytopenia, where other treatments as corticosteroids, splenectomy or immunoglobulins are inadequate. The aim of this meta-analysis was to evaluate the efficacy and safety of the eltrombopag in adults
and children with immune thrombocytopenia. We included 7 studies with a total of 765 patients (606 adults and 159 children). We evaluated the number of patients that achieved a post treatment platelet count equal or above 50x109
result-target) without the need of rescue treatment for at least 4 weeks. Our data showed that patients who received eltrombopag were almost 4 times more probable in achieving the primary target when compared to patients that received placebo
(RR 3.84, 95% CI 2.39 to 6.14; I2 = 46%). The number of patients that needed rescue treatment and the number of bleeding
incidents were reduced in the group that received eltrombopag when compared to those who received placebo (RR 0.40,
95% CI 0.25 to 0.62; I2 = 40%) (RR 0.74, 95% CI 0.62 to 0.89; I2 = 68%). The total number of side effects did not statistically differ between the two groups (RR 0.99, 95% CI 0.90 to 1.08; I2 = 14%). Our findings were similar to previously published studies and confirm that eltrombopag is safe and efficient in immune thrombocytopenia. However more clinical trials
are needed in order to enhance our findings.
Keywords: immune thrombocytopenia, eltrombopag, thrombocytopenia, aplastic anemia, antibodies.
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