The present invention relates to combinations of at least two components, component A and component B, component A being an inhibitor of PI3K kinase, and component B being venetoclax or palbociclib. Another aspect of the present invention relates to the use of such combinations as described herein for the preparation of a medicament for the treatment or prophylaxis of a disease, particurlarly for the treatment or prophylaxis of non-Hodgkin's lymphoma (hereinafter abbreviated to “NHL”), particularly 1st line, 2nd line, relapsed, refractory, indolent or aggressive non-Hodgkin's lymphoma (NHL), in particular follicular lymphoma (hereinafter abbreviated to “FL”), chronic lymphocytic leukaemia (hereinafter abbreviated to “CLL”), marginal zone lymphoma (hereinafter abbreviated to “MZL”), splenic marginal zone lymphoma (hereinafter abbreviated to “SMZL”), diffuse large B-cell lymphoma (hereinafter abbreviated to “DLBCL”), mantle cell lymphoma (MCL), transformed lymphoma (hereinafter abbreviated to “TL”), or peripheral T-cell lymphoma (hereinafter abbreviated to “PTCL”).