One of the stars of the 1975-1984 comedy series "One Day at a Time" has been diagnosed with pancreatic cancer and is undergoing treatment, reports USA Today.

Bonnie Franklin played Ann Romano, a divorced mom, on the CBS show. She also appeared on "Hot in Cleveland" last year, which reunited her with her co-star on "One Day at a Time," Valerie Bertinelli.

Franklin, 68, was nominated for an Emmy and two Golden Globes for her role as Romano. She currently plays Sister Celeste, a nun, in a recurring role on the CBS soap opera "The Young and the Restless."

Bonnie Franklin