EXCLUSIVE: HBO Films is closing a deal with Julie Delpy to adapt the Marisa Acocella Marchetto memoir Cancer Vixen: A True Story as a star vehicle for Cate Blanchett. Blanchett is an executive producer on the project alongside Maven Pictures partners Trudie Styler and Celine Rattray.

Delpy is coming off acclaim for her performance opposite Ethan Hawke in the Richard Linklater-directed Before Midnight, and she wrote that script with her co-star and director. Her other co-writing credits include Before Sunset and 2 Days In New York. She and Blanchett turned in two of the most buzzed-about actress performances of the year, counting Blanchett’s turn in Blue Jasmine.

Blanchett will play a cartoonist for magazines like The New Yorker and Glamour with a supercharged Manhattan lifestyle who is about to get married but must re-examine her life through wit and her animation when she is diagnosed with breast cancer. Delpy is repped by CAA, Untitled Entertainment and Markham Froggatt and Irwin in the UK.