Tatiana Schlossberg, the 35-year-old granddaughter of President John F. Kennedy and Jacqueline Kennedy Onassis, has revealed her cancer diagnosis in a personal essay for The New Yorker. The journalist and author shared the news in the piece published on Saturday, November 22.

Schlossberg wrote that she was diagnosed with acute myeloid leukemia shortly after giving birth to her second child in May 2024. Her doctor noticed abnormal results when reviewing her postpartum blood work.

Her white blood cell count had soared to 131,000 cells per microliter, far above the normal range of up to 11,000. Doctors initially suggested it could be related to pregnancy but soon confirmed leukemia with a rare genetic mutation.

Doctors told her standard treatment would not be enough to cure her. She would need months of chemotherapy followed by a bone-marrow transplant for any chance at long-term survival.

Schlossberg described the shock of the diagnosis, noting she had been swimming daily and felt perfectly healthy. She struggled to accept the reality while caring for her toddler and newborn daughter.

She spent five weeks in hospital after giving birth, then underwent a transplant and continued chemotherapy at home. By January, she joined a clinical trial for CAR-T-cell therapy, though doctors later warned she might have only a year left.

Throughout her illness, Schlossberg credited her husband George Moran for his unwavering support. She also reflected on the pain her diagnosis has caused her family, especially her mother Caroline Kennedy, while trying to remain present for her two young children.