<i>TBL1XR1-RARB</i> as an oncogenic protein exerts effects similar to those of <i>PML-RARA</i>, underpinning the importance of retinoic acid pathway alterations in the pathogenesis of APL.<b>Significance:</b> These findings report a novel and distinct genetic subtype of acute promyelocytic leukemia (APL) by illustrating that the majority of APL without RARA translocations harbor RARB translocations.<i></i>.
In this study, we identified a novel RARα fusion gene, TBLR1-RARα (GenBank KF589333), in a rare case of APL with a t(3;17)(q26;q21),t(7;17)(q11.2;q21) complex chromosomal rearrangement.