CBL and juvenile myelomonocytic leukemia: Conversely, a new Cbl-b inhibitor C7683 currently in phase I clinical trials for advanced solid tumor malignancies, designed to keep wildtype Cbl-b locked in an inactive state [68], may partially mimic LHR Cbl mutations and thus should be used with caution in patients with clonal hematopoiesis, CMML or JMML.