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使用BRAF/MEK抑制剂治疗的复发/难治性多发性骨髓瘤患者的快速反应

Rapid Response in a Patient with Relapsed/Refractory Multiple Myeloma Treated with BRAF/MEK Inhibitors.

作者信息

Otieno Steve Biko, Nasir Syed, Weir Alva, Johnson Robert

机构信息

The University of Tennessee Health Science Center, Department of Hematology/Oncology, 19 S. Manassas, Memphis, TN 38103, USA.

The Veterans Affairs Medical Center, 1030 Jefferson Ave, Memphis, TN 38104, USA.

出版信息

Case Rep Hematol. 2020 Dec 11;2020:8821415. doi: 10.1155/2020/8821415. eCollection 2020.

Abstract

Patients with relapsed and refractory multiple myeloma have a poor prognosis. The mitogen-activated protein kinase (MAPK) pathway has been implicated in the pathogenesis of multiple myeloma. Several mutations in this pathway can lead to its constitutive activation leading to oncogenesis. One such mutation is BRAFV600E which is a therapeutic target in the treatment of melanoma, lung cancer, colon cancer, thyroid cancer, and hairy cell leukemia. BRAFV600E-directed therapy currently does not have approval in multiple myeloma. It has been proposed that this mutation leads to proteasome inhibitor resistance. About 4-10% of multiple myeloma cases harbor the BRAFV600E mutation. Herein, we report a case of a patient with relapsed and refractory multiple myeloma who had a progression-free survival (PFS) of 8.5 months on BRAF-targeted therapy.

摘要

复发难治性多发性骨髓瘤患者预后较差。丝裂原活化蛋白激酶(MAPK)通路与多发性骨髓瘤的发病机制有关。该通路中的几种突变可导致其组成性激活,从而引发肿瘤发生。其中一种突变是BRAFV600E,它是黑色素瘤、肺癌、结肠癌、甲状腺癌和毛细胞白血病治疗中的一个治疗靶点。BRAFV600E靶向治疗目前在多发性骨髓瘤中尚未获批。有人提出这种突变会导致蛋白酶体抑制剂耐药。约4-10%的多发性骨髓瘤病例存在BRAFV600E突变。在此,我们报告一例复发难治性多发性骨髓瘤患者,其接受BRAF靶向治疗后的无进展生存期(PFS)为8.5个月。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c321/7748897/7d330e4ad6ff/CRIHEM2020-8821415.001.jpg

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