Multi-arm polymer conjugate of 7-ethyl-10-hydroxycamptothecin for the treatment of breast cancer, colorectal cancer, pancreatic cancer, ovarian cancer and lung cancer
A four arm-polyethylene glycol-7-ethyl-l0-hydroxycamptothecin conjugate, such as Formula (I), is disclosed. Methods of making the conjugates and methods of treating mammals using the same are also disclosed.