Tatiana was the daughter of Caroline Kennedy and Edwin Schlossberg and had made a name for herself as an environmental journalist. In a poignant essay published in The New Yorker in November 2025, she opened up about her diagnosis of terminal cancer. Her journey with the illness began in May 2024, following the birth of her second child, when her doctor noticed an unusually high white blood cell count, leading to the discovery of acute myeloid leukemia (AML).

This form of leukemia, known for its aggressive nature, primarily affects bone marrow and blood. It is a rare condition, affecting approximately 4 in every 100,000 adults annually, and is more commonly associated with older individuals, according to information from the Cleveland Clinic.

Schlossberg’s untimely death serves as a solemn reminder of the fragility of life and the indiscriminate nature of cancer, even amidst the legacy of one of America’s most revered families.

Schlossberg was diagnosed with acute myeloid leukemia in May 2024 at 34. After the birth of her second child, her doctor noticed her white blood cell count was high. It turned out to be acute myeloid leukemia, also called AML, with a rare mutation, mostly seen in older people.

AML is a rare and aggressive cancer that impacts a person’s bone marrow and blood, the Cleveland Clinic explains on its website. It affects about 4 in 100,000 adults annually. 

In her essay, “A Battle With My Blood,” Schlossberg recounted going through rounds of chemotherapy and two stem cell transplants and participating in clinical trials. During the most recent trial, she wrote, her doctor told her “he could keep me alive for a year, maybe.”

According to the Mayo Clinic, AML is the most common type of acute leukemia in adults and unlike other cancers there are no numbered stages. 

The family statement announcing Schlossberg’s death did not disclose a cause of death or say where she had died.

“Our beautiful Tatiana passed away this morning. She will always be in our hearts,” the statement said. 

In her November essay, Schlossberg also criticized policies pushed by her mother’s cousin, Health and Human Services Secretary Robert F. Kennedy Jr., saying policies he backed could hurt cancer patients like her. Her mother had urged senators to reject his confirmation.

“As I spent more and more of my life under the care of doctors, nurses, and researchers striving to improve the lives of others, I watched as Bobby cut nearly a half billion dollars for research into mRNA vaccines, technology that could be used against certain cancers,” the essay reads.

Schlossberg wrote in The New Yorker essay that she feared her daughter and son wouldn’t remember her. She felt cheated and sad that she wouldn’t get to keep living “the wonderful life” she had with her husband, George Moran.

While her parents and two siblings tried to hide their pain from her, she said she felt it every day. Her siblings, Rose and Jack Schlossberg, are JFK’s other grandchildren.

“For my whole life, I have tried to be good, to be a good student and a good sister and a good daughter, and to protect my mother and never make her upset or angry,” she said. “Now I have added a new tragedy to her life, to our family’s life, and there’s nothing I can do to stop it.”

Schlossberg’s mother Caroline was 5 years old when her father, President Kennedy, was assassinated in Dallas in 1963. She was 10 when her uncle, Robert F. Kennedy, was assassinated in Los Angeles in 1968 while he was running for president.

Caroline’s brother, John F. Kennedy Jr., died in 1999 when the single-engine plane he was piloting plunged into the Atlantic Ocean, near Martha’s Vineyard, Massachusetts. His wife, Carolyn, and her sister, Lauren Bessette, also died in the crash.

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