Caitlin Leggett, from Cardiff, Wales, was diagnosed with acute myeloid leukemia, an aggressive form of blood cancer, in April 2025. After undergoing chemotherapy, she initially went into remission and later received a stem cell transplant. However, the disease returned earlier this year, leaving doctors with limited treatment options.
Hoping to find a life-saving solution, Caitlin’s family launched a fundraising campaign to help her access specialized treatment abroad. Her twin sister, Grace, described the situation as Caitlin’s “only chance” at a cure.
During the process of determining whether Grace could donate stem cells, doctors made an unexpected discovery. Although the sisters had always believed they were fraternal twins, testing revealed they were actually identical twins. Because their DNA was nearly identical, Grace was unfortunately unable to serve as a donor.
The sisters shared an exceptionally close bond, having spent much of their lives together, including living together while attending university.
Sadly, on June 15, Caitlin suffered a sudden brain bleed followed by multiple strokes, leading to a rapid decline in her condition. Her family later confirmed that she passed away peacefully, surrounded by loved ones.
“We’re only 24,” Grace previously said. “Nobody expects this to happen. Being twins, you never imagine one of you won’t be there.”
Caitlin’s story has touched many people, and tributes continue to pour in for the young woman whose courage inspired those around her.
Rest in peace, Caitlin. ❤️