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Ianotto, Jean-Christophe; Chauveau, Aurélie; Boyer-Perrard, Françoise; Gyan, Emmanuel; Laribi, Kamel; Cony-Makhoul, Pascale; Demory, Jean-Loup; de Renzis, Benoit; Dosquet, Christine; Rey, Jerome; Roy, Lydia; Dupriez, Brigitte; Knoops, Laurent; Legros, Laurence; Malou, Mohamed; Hutin, Pascal; Ranta, Dana; Benbrahim, Omar; Ugo, Valérie; Lippert, Eric; Kiladjian, Jean-Jacques
Haematologica (Roma), 03/2018, Volume: 103, Issue: 3Journal Article
We have previously described the safety and efficacy of pegylated interferon-α2a therapy in a cohort of 62 patients with myeloproliferative neoplasm-associated myelofibrosis followed in centers affiliated to the French Intergroup of Myeloproliferative neoplasms. In this study, we report their long-term outcomes and correlations with mutational patterns of driver and non-driver mutations analyzed by targeted next generation sequencing. The median age at diagnosis was 66 years old, the median follow-up since starting pegylated interferon was 58 months. At the time of analysis, 30 (48.4%) patients were alive including 16 still being treated with pegylated interferon. The median survival of patients with intermediate and high-risk prognostic Lille and dynamic International Prognostic Scoring System scores treated with pegylated interferon was increased in comparison to that of historical cohorts. In addition, overall survival was significantly correlated with the duration of pegylated interferon therapy (70 30 months after 2 years of treatment, <10 ). allele burden was decreased by more than 50% in 58.8% of patients and two patients even achieved complete molecular response. Next-generation sequencing analyses performed in 49 patients showed that 28 (57.1%) of them carried non-driver mutations. The presence of at least one additional mutation was associated with a reduction of both overall and leukemia-free survival. These findings in a large series of patients with myelofibrosis suggest that pegylated interferon therapy may provide a survival benefit for patients with intermediate- or high-risk Lille and dynamic International Prognostic Scoring System scores. It also reduced the allele burden in most patients. These results further support the use of pegylated interferon in selected patients with myelofibrosis.
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