As Tatiana Schlossberg underwent stem cell treatment for her terminal cancer battle, her siblings leapt into action to help.

“My sister had turned out to be a match and would donate her stem cells,” Tatiana, 35, wrote in a New Yorker essay published Saturday, November 22, referring to older sister Rose Schlossberg. “My brother [Jack Schlossberg] was a half-match, but he still asked every doctor if maybe a half-match was better, just in case.”

The Schlossberg siblings are the three children of Caroline Kennedy — the daughter of the late John F. Kennedy and Jacqueline Kennedy Onaissis — and Edwin Schlossberg.

Tatiana discovered that she was diagnosed with acute myeloid leukemia in 2024 shortly after giving birth to her second child. (Tatiana and husband George Moran welcomed a son in 2022

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