WEE1 and acute lymphoblastic leukemia: The main protein kinases particularly involve the phosphatidyl-inositol 3-kinase/v-akt murine thymoma viral oncogene homolog 1 (PI3K/AKT), mitogenactivated protein kinase/extracellular signal regulated kinase (MAPK/ERK), janus kinase signal transducer and activator of transcription (JAK-STAT) and signal transducer and activator of transcription 5 (STAT5) in AML observed to be aberrantly activated in a variety of malignancies, including pre-B-ALL, T cell ALL, and AML [13, 14].