*Regina King has been cast in the Lifetime original movie "Living Proof," which tells the true story of a UCLA doctor who developed the breast cancer drug Herceptin.

The all-star cast includes Angie Harmon, Amanda Bynes, Bernadette Peters, Swoosie Kurtz, Jennifer Coolidge, Trudie Styler, Tammy Blanchard, John Benjamin Hickey, Paula Cale and Harry Connick Jr.

Due to air in October, "Proof" is based on Robert Bazell's book and centers on Dr. Dennis Slamon, to be played by Connick. King will play a survivor of breast cancer.

Bynes plays Slamon's student assistant. Harmon portrays Lilly Tartikoff, wife of former NBC entertainment chief Brandon Tartikoff and the person responsible for raising money to continue Slamon's research. Blanchard is the first woman to receive Herceptin, while Kurtz plays her grandmother.

Peters plays the first woman in to be saved by Herceptin, while Styler and Coolidge play participants in the drug study. Hickey is a friend and fellow scientist to Slamon. Cale portrays Slamon's wife, Donna.

The movie is from executive producers Renee Zellweger, Craig Zadan and Neil Meron. Filming is currently taking place in New Orleans for an October premiere.