Katherine Schwarzenegger Pratt Reacts to Cousin Tatiana Schlossberg’s Terminal Cancer Diagnosis

Katherine Schwarzenegger is sending support to her cousin, Tatiana Schlossberg. On Saturday, Nov. 22, Schlossberg, who is the granddaughter of former President John F. Kennedy, published an emotional essay in the New Yorker revealing that she has been battling terminal cancer for the past year and a half, after being diagnosed following the birth of her second child in May 2024. “The diagnosis was acute myeloid leukemia, with a rare mutation called Inversion 3. It was mostly seen in older patients. Every doctor I saw asked me if I had spent a lot of time at Ground Zero, given how common blood cancers are among first responders. I was in New York on 9/11, in the sixth grade, but I didn’t visit the site until years later. I am not elderly—I had just turned thirty-four,” she explained. As Schlossberg’s story made headlines, Schwarzenegger took to Instagram to commend her cousin’s vulnerability, writing in part, “This is a profound piece written by my extraordinary cousin, Tatiana. It’s been shared by many and should be read by all. I have only tears and anger reading that this is her reality. She has lived this experience with so much grace and I am in awe of her as a human, mother, wife, daughter, writer and fighter.”