BCL2L11 and Anaplastic (Malignant) Meningioma: It relocates pro-apoptotic BH3-only proteins, such as Bim, from anti-apoptotic Bcl-2 proteins, resulting in the induction of apoptosis.44 The present results suggest that senolytic activity by navitoclax is, at least in part, mediated by the inhibition of Bcl-xL in malignant meningioma cells under the combined treatment with gemcitabine and IR.