- Dithiolethione modified valproate and diclofenac increase E-cadherin expression and decrease proliferation of non-small cell lung cancer cells. Moody, T.W., Switzer, C., Santana-Flores, W., Ridnour, L.A., Berna, M., Thill, M., Jensen, R.T., Sparatore, A., Del Soldato, P., Yeh, G.C., Roberts, D.D., Giaccone, G., Wink, D.A. Lung. Cancer (2010)