The Office star Lucy Davis revealed that she has been diagnosed with “incurable” Stage 4 Breast Cancer. Davis, who played Dawn Tinsley on the original U.K. version of the series, made the reveal in a post to Instagram on Tuesday. “A year and a half ago I was diagnosed with Stage 4 Breast Cancer, which has metastasized to my bones. Davis played Dawn in the U.K. version of "The Office." Jenna Fischer, who played Pam in the U.S. version of “The Office,” was also diagnosed with breast cancer.