Tatiana Schlossberg, 35, daughter of Caroline Kennedy and Edwin Schlossberg, has revealed that she is battling terminal cancer.

In an essay published by The New Yorker on Saturday, Nov. 22, Schlossberg disclosed that she has been diagnosed with acute myeloid leukemia, a rare and aggressive blood cancer.

Schlossberg said she first learned of the disease shortly after giving birth to her second child in May 2024, when her doctor noted an abnormality in her white blood cell count.

“A few hours later, my doctor noticed that my blood count looked strange. A normal white-blood-cell count is around four to eleven thousand cells per microliter. Mine was a hundred and thirty-one thousand cells per microliter,” she wrote.

Her doctor initially suggested that the spike could be related to pregnancy and delivery, but also warned that it could indicate leukemia. Further testing confirmed the diagnosis: Schlossberg has a rare genetic mutation known as Inversion 3.

Schlossberg, who shares a 3-year-old son and a 1-year-old daughter with her husband, George Moran, whom she married in 2017, reflected on her responsibilities as a new mother. “I had a son whom I loved more than anything and a newborn I needed to take care of,” she wrote.

Writing about her treatment options, Schlossberg revealed, “I could not be cured by a standard course.” She said she was initially told she would require months of chemotherapy and a bone-marrow transplant. “I did not — could not — believe that they were talking about me. I had swum a mile in the pool the day before, nine months pregnant. I wasn’t sick. I didn’t feel sick. I was actually one of the healthiest people I knew.”