Asian Pac J Cancer Prev. 2017 Dec 29;18(12):3333-3341.
Effects of Damnacanthal and Nordamnacanthal on Proliferation, Apoptosis, and Migration of Oral Squamous Cell Carcinoma Cells
Shaghayegh G, Alabsi AM, Ali-Saeed R, Ali AM, Vincent-Chong VK, Ismail NH, Choon YF, Zain RB.

Damancanthal (DAM) and nordamnacanthal (NDAM) from the roots of the noni plant were cytotoxic against oral squamous cell carcinoma (OSCC) cells.  They also inhibited cell migration and induced apoptosis. (original abstract available at https://www.ncbi.nlm.nih.gov/pubmed/29286228).