Department of Hematology, Osaka General Hospital of West Japan Railway Company, Osaka, Japan.
Hematology, Graduate School of Medicine, Osaka City University, Osaka, Japan.
Cancer Rep (Hoboken). 2022 Oct;5(10):e1658. doi: 10.1002/cnr2.1658. Epub 2022 Jun 17.
We herein present a case of the co-occurrence of JAK2-mutated essential thrombocythemia (ET) with chronic lymphocytic leukemia (CLL) harboring the recurrent and rare whole-arm translocation, der(8;17)(q10;q10). The co-existence of lymphoproliferative neoplasms and myeloproliferative neoplasms is suggested to be a rare event. Under this condition, the lymphoproliferative disorder presents a clinically indolent course with a low-risk biological profile. However, the present case showed aggressive disease progression, reflecting a poor prognostic factor; that is, the loss of 17p caused by the whole-arm der(8;17)(q10;q10) translocation.
The present case report emphasizes the importance of considering the involvement of a genetically poor prognostic factor, regardless of the co-occurrence of CLL and ET.
我们在此介绍了一例 JAK2 突变型原发性血小板增多症 (ET) 与慢性淋巴细胞白血病 (CLL) 同时发生的病例,后者携带反复出现的罕见全臂易位,即 der(8;17)(q10;q10)。淋巴增生性肿瘤和骨髓增生性肿瘤的共存被认为是一种罕见事件。在这种情况下,淋巴增生性疾病表现为临床惰性病程和低风险的生物学特征。然而,本病例表现出侵袭性疾病进展,反映了预后不良的因素,即全臂 der(8;17)(q10;q10)易位导致的 17p 缺失。
本病例报告强调了无论 CLL 和 ET 是否同时发生,都应考虑涉及遗传预后不良因素的重要性。