The present invention relates generally to compositions and methods for treating cancer and neoplastic disease. Provided herein are substituted heterocyclic derivative compounds and pharmaceutical compositions comprising said compounds as exemplified as follows, The subject compounds and compositions are useful for inhibition of lysine specific demethylase-1. Furthermore, the subject compounds and compositions are useful for the treatment of cancer, such as prostate cancer, breast cancer, bladder cancer, lung cancer and/or melanoma and the like.