(Bloomberg) -- A class of drugs is emerging that can attack cancer cells in the body without damaging surrounding healthy ones. They have the potential to replace chemotherapy and its disruptive side effects, reshaping the future of cancer care.

The complex biological medicines, called antibody drug conjugates (ADCs), have been in development for decades, and are now generating renewed excitement because of the success of one ADC in late-stage testing, a breast cancer treatment called DS-8201.