CircTET2 overexpression activated the mechanistic target of rapamycin complex 1 (mTORC1) pathway and elevated the levels of carnitine palmitoyl transferase 1A (CPT1A) and carnitine palmitoyl transferase 1B (CPT1B), which in turn promoted the growth of CLL cells91. Here, CPT1B is linked to B-cell chronic lymphocytic leukemia.