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Karavilagenin D exhibits inhibitory effects on skin-tumor promotion in an in vivo two-stage mouse skin carcinogenesis test based on 7,12-dimethylbenz[a]anthracene (DMBA) as initiator, and with TPA as a promoter. Karavilagenin D exhibits inhibition effect against human cancer cell lines.

Karavilagenin D, a cucurbitane-type triterpene isolated from Japanese bitter melon leaves, is a potential tumor-promoting inhibitor[1].

[1] Jie Zhang, et al. Cucurbitane triterpenoids from the leaves of Momordica charantia, and their cancer chemopreventive effects and cytotoxicities. Chem Biodivers. 2012 Feb;9(2):428-40. DOI:10.1002/cbdv.201100142