While a recent media report was more hype than science, it did focus on a promising pathway for cancer treatments.
"The molecule in question is Mucin1 (or MUC1), a sugar-coated protein that lines the inner surface of lung, stomach, and pancreas to defend against pathogens. In nearly all tumors MUC1 can be found...on tumors, MUC1 possess a different sugar makeup than on normal cells, so cancerous MUC1 can be targeted without damaging normal cells. For these reasons... scientists have long targeted MUC1 in cancer therapies."
A very relevant statement:
"With such a small sample size that tests only one type of cancer - multiple myeloma - and no published human data, it remains too early for anyone to make conclusive claims about the drug's effectiveness against multiple myeloma or any other cancers."