(atiprimod) An orally bioavailable small molecule belonging to the azaspirane class of cationic amphiphilic agents with anti-inflammatory, antineoplastic, and antiangiogenic properties. Atiprimod inhibits the phosphorylation of signal transducer and activator of transcription 3 (STAT3), blocking the signalling pathways of interleukin-6 and vascular endothelial growth factor (VEGF) and downregulating the anti-apoptotic proteins Bcl-2, Bcl-XL, and Mcl-1, thereby inhibiting cell proliferation, inducing cell cycle arrest, and inducing apoptosis.

A substance being studied in the treatment of certain multiple myelomas and other advanced cancers. SK&F106615 may block the growth of tumors and may prevent the growth of new blood vessels that tumors need to grow. SK&F106615 is a type of signal transduction inhibitor and a type of antiangiogenesis agent.