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One thousand patients with essential thrombocythemia: the Mayo Clinic experience
Blood Cancer Journal ( IF 12.9 ) Pub Date : 2024-01-18 , DOI: 10.1038/s41408-023-00972-x
Naseema Gangat 1 , Omer Karrar 1 , Aref Al-Kali 1 , Kebede H Begna 1 , Michelle A Elliott 1 , Alexandra P Wolanskyj-Spinner 1 , Animesh Pardanani 1 , Curtis A Hanson 2 , Rhett P Ketterling 3 , Ayalew Tefferi 1
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We describe 1000 patients with essential thrombocythemia seen at the Mayo Clinic between 1967 and 2023: median age 58 years (18–90), females 63%, JAK2/CALR/MPL-mutated 62%/27%/3%, triple-negative (TN) 8%, extreme thrombocytosis (ExT; platelets ≥1000 × 109/L) 26%, leukocytosis (leukocyte count >11 × 109/L) 20%, and abnormal karyotype 6%. JAK2-mutated patients were older (median 71 years), and CALR mutated (52 years), and TN (50 years) younger (p < 0.01). Female gender clustered with TN (73%) and JAK2 (69%) vs. CALR/MPL (49%/47%) mutations (p < 0.01). ExT clustered with CALR (type-2 more than type-1) and TN and leukocytosis with JAK2 mutation (p < 0.01). In multivariable analysis, risk factors for overall survival were older age (p < 0.01), male gender (HR 1.8), absolute neutrophil count (ANC) ≥ 8 × 109/L (HR 1.6), absolute lymphocyte count (ALC) < 1.7 × 109/L (HR 1.5), hypertension (HR 1.7), and arterial thrombosis history (HR 1.7); for leukemia-free survival, ExT (HR 2.3) and abnormal karyotype (HR 3.1); for myelofibrosis-free survival, ANC ≥ 8 × 109/L (HR 2.3) and MPL mutation (HR 3.9); for arterial thrombosis-free survival, age ≥60 years (HR 1.9), male gender (HR 1.6), arterial thrombosis history (HR 1.7), hypertension (HR 1.7), and JAK2 mutation (HR 1.8); for venous thrombosis-free survival, male gender (HR 1.8) and venous thrombosis history (HR 3.0). Associations between ExT and leukemic transformation and between ANC and fibrotic progression were limited to JAK2-mutated cases. Aspirin therapy appeared to mitigate both arterial (HR 0.4) and venous (HR 0.4) thrombosis risk. HR-based risk models delineated patients with median survivals ranging from 10 years to not reached and 20-year leukemia/myelofibrosis incidences from 3%/21% to 12.8%/49%. The current study provides both novel and confirmatory observations of essential thrombocythemia.



中文翻译:


1000 名原发性血小板增多症患者:妙佑医疗国际的经验



我们描述了 1967 年至 2023 年间在梅奥诊所就诊的 1000 名原发性血小板增多症患者:中位年龄 58 岁 (18-90),女性 63%,JAK2/CALR/MPL 突变 62%/27%/3%,三阴性 (TN) 8%,极度血小板增多症 (ExT;血小板≥1000 × 109/L) 26%,白细胞增多症 (白细胞计数 >11 × 109/L) 20%,异常核型 6%。JAK2 突变患者年龄较大 (中位 71 岁),CALR 突变 (52 岁) 和 TN (50 岁) 年轻 (p < 0.01)。女性性别聚集于 TN (73%) 和 JAK2 (69%) 与 CALR/MPL (49%/47%) 突变 (p < 0.01)。ExT 与 CALR (2 型多于 1 型) 和 TN 聚集,白细胞增多伴有 JAK2 突变 (p < 0.01)。在多变量分析中,总生存期的危险因素是年龄较大 (p < 0.01)、男性 (HR 1.8)、中性粒细胞绝对计数 (ANC) ≥ 8 × 109/L (HR 1.6)、绝对淋巴细胞计数 (ALC) < 1.7 × 109/L (HR 1.5)、高血压 (HR 1.7) 和动脉血栓形成史 (HR 1.7);对于无白血病生存期,ExT (HR 2.3) 和异常核型 (HR 3.1);对于无骨髓纤维化生存期,ANC ≥ 8 × 109/L (HR 2.3) 和 MPL 突变 (HR 3.9);对于无动脉血栓形成生存期,年龄 ≥60 岁 (HR 1.9)、男性 (HR 1.6)、动脉血栓形成史 (HR 1.7)、高血压 (HR 1.7) 和 JAK2 突变 (HR 1.8);对于无静脉血栓形成的生存率,男性 (HR 1.8) 和静脉血栓形成病史 (HR 3.0)。ExT 与白血病转化之间以及 ANC 与纤维化进展之间的关联仅限于 JAK2 突变病例。 阿司匹林治疗似乎减轻了动脉 (HR 0.4) 和静脉 (HR 0.4) 血栓形成的风险。基于 HR 的风险模型描绘了中位生存期从 10 年到未达到的患者,20 年白血病/骨髓纤维化发病率从 3%/21% 到 12.8%/49% 不等。目前的研究提供了对原发性血小板增多症的新观察和验证性观察。

更新日期:2024-01-18
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