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Heeney, Matthew M.; Abboud, Miguel R.; Githanga, Jessie; Inusa, Baba P.D.; Kanter, Julie; Michelson, Alan D.; Nduba, Videlis; Musiime, Victor; Apte, Mohini; Inati, Adlette; Taksande, Amar M.; Andersson, Marielle; Åstrand, Magnus; Maklad, Noha; Niazi, Mohammad; Himmelmann, Anders; Berggren, Anders R.
Blood, 09/2022, Letnik: 140, Številka: 13Journal Article
The phase 3 HESTIA3 study assessed the efficacy and safety of the reversible P2Y12 inhibitor ticagrelor vs placebo in preventing vaso-occlusive crises in pediatric patients with sickle cell disease (SCD). Patients aged 2 to 17 years were randomly assigned 1:1 to receive weight-based doses of ticagrelor or matching placebo. The primary end point was the rate of vaso-occlusive crises, a composite of painful crises and/or acute chest syndrome (ACS). Key secondary end points included number and duration of painful crises, number of ACS events, and number of vaso-occlusive crises requiring hospitalization or emergency department visits. Exploratory end points included the effect of ticagrelor on platelet activation. In total, 193 patients (ticagrelor, n = 101; placebo, n = 92) underwent randomization at 53 sites across 16 countries. The study was terminated 4 months before planned completion for lack of efficacy. Median ticagrelor exposure duration was 296.5 days. The primary end point was not met: estimated yearly incidence of vaso-occlusive crises was 2.74 in the ticagrelor group and 2.60 in the placebo group (rate ratio, 1.06; 95% confidence interval, 0.75-1.50; P = .7597). There was no evidence of efficacy for ticagrelor vs placebo across secondary end points. Median platelet inhibition with ticagrelor at 6 months was 34.9% predose and 55.7% at 2 hours' postdose. Nine patients (9%) in the ticagrelor group and eight patients (9%) in the placebo group had at least one bleeding event. In conclusion, no reduction of vaso-occlusive crises was seen with ticagrelor vs placebo in these pediatric patients with SCD. This trial was registered at www.clinicaltrials.gov as #NCT03615924. •Ticagrelor did not reduce the composite end point of vaso-occlusive crises; there was no evidence of efficacy across secondary end points.•Ticagrelor should not be used for the prevention of vaso-occlusive crises in pediatric patients with SCD. Display omitted
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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