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Acute myeloid leukemia with CPSF6-RARG fusion resembling acute promyelocytic leukemia with extramedullary infiltration.


ABSTRACT: Some subtypes of acute myeloid leukemia (AML) share morphologic, immunophenotypic, and clinical features of acute promyelocytic leukemia (APL), but lack a PML-RARA (promyelocytic leukemia-retinoic acid receptor alpha) fusion gene. Instead, they have the retinoic acid receptor beta (RARB) or retinoic acid receptor gamma (RARG) rearranged. Almost all of these AML subtypes exhibit resistance to all-trans retinoic acid (ATRA); undoubtedly, the prognosis is poor. Here, we present an AML patient resembling APL with a novel cleavage and polyadenylation specific factor 6 (CPSF6)-RARG fusion, showing resistance to ATRA and poor response to chemotherapy with homoharringtonine and cytarabine. Simultaneously, the patient also had extramedullary infiltration.

SUBMITTER: Han X 

PROVIDER: S-EPMC7797573 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Acute myeloid leukemia with CPSF6-RARG fusion resembling acute promyelocytic leukemia with extramedullary infiltration.

Han Xiaoyan X   Jin Chunxiang C   Zheng Gaofeng G   Li Yi Y   Wang Yungui Y   Zhang Enfan E   Zhu Honghu H   Cai Zhen Z  

Therapeutic advances in hematology 20210109


Some subtypes of acute myeloid leukemia (AML) share morphologic, immunophenotypic, and clinical features of acute promyelocytic leukemia (APL), but lack a <i>PML-RARA</i> (promyelocytic leukemia-retinoic acid receptor alpha) fusion gene. Instead, they have the retinoic acid receptor beta (RARB) or retinoic acid receptor gamma (RARG) rearranged. Almost all of these AML subtypes exhibit resistance to all-trans retinoic acid (ATRA); undoubtedly, the prognosis is poor. Here, we present an AML patien  ...[more]

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