Identical Twin Sisters, 24, Say It’s ‘Unthinkable’ to Be Apart After One Is Given ‘6 Months to Live’ amid Terminal Diagnosis

**Sisters United: A Twin’s Battle Against Terminal Leukemia**

Caitlin Leggett, a 24-year-old from Wales, faces a heartbreaking prognosis after her acute myeloid leukaemia (AML) returned. Having first been diagnosed with the disease in 2025, Caitlin received the news in May 2026 that she now had only six months to live. This devastating turn has left her and her identical twin sister, Grace, grappling with the reality of a potential life without each other.

While Grace has taken to social media to share their plight, the sisters’ bond has never been more apparent. “We’re only 24 — nobody expects this to happen. Being twins as well, you’re not supposed to have one twin not be there,” Grace reflected in an interview. Caitlin echoed her sister’s sentiments, calling the thought of separation “unthinkable.” The sisters have spent their lives side by side, and the prospect of losing each other weighs heavily on them.

Caitlin’s journey with AML began when she noticed a persistent rash, which led to her diagnosis in April 2025. The disease, an aggressive form of blood cancer, affects the bone marrow’s production of blood cells. Following her diagnosis, she experienced rapid deterioration, necessitating a bone marrow transplant and intensive chemotherapy. Caitlin initially went into remission after two months of treatment, a glimmer of hope for her and her family.

However, complications arose during her recovery; finding a suitable donor proved exceptionally difficult, leading to an unexpected relapse. After undergoing a clinical trial and another bone marrow transplant, Caitlin once again achieved remission. In a twist of fate, Caitlin and Grace discovered they are identical twins when doctors identified their exceptionally similar DNA markers during evaluations for a donor match. This discovery ultimately made Grace ineligible to donate her stem cells.

The hope of a future together was dashed when Caitlin learned of her leukaemia’s return during a routine bone marrow monitoring appointment. Grace shared this distressing news via a GoFundMe page called “Saving Caitlin,” explaining their dire situation and the urgency for further treatment beyond NHS provision. “We have been told that Caitlin has only six months to live,” Grace stated on the fundraising platform, appealing for contributions to support her sister’s medical journey.

Compounding their emotional distress, Caitlin has faced further complications during her hospital stays. In a recent video update, she described experiencing Differentiation Syndrome, a condition that arises when leukaemia cells mature into healthy cells but release toxins into the bloodstream in the process. The result has been severe bruising and significantly low platelet counts, requiring multiple transfusions daily.

Grace’s efforts have resonated widely, as evident by the incredible response to her GoFundMe appeal, which has already raised over $113,000 toward their nearly $670,000 target. This funding is crucial for facilitating Caitlin’s access to urgent medical treatments unavailable within the UK. The sisters celebrated their 24th birthday recently, an occasion that has turned bittersweet with the looming threat of loss.

Despite the grim prognosis, Caitlin remains resolute. “I’m choosing to fight this diagnosis and seek life-saving treatment overseas,” she affirmed, showcasing her determination to battle the illness. Her story is a poignant reminder of the frailty of life and the strength of sisterly love.

The Leggett sisters, with their unbreakable bond, continue to inspire friends, family, and supporters through their struggle. The fundraising efforts illustrate the profound impact of community, as they rally around Caitlin in her time of need. The siblings remain hopeful that with enough support, they can share many more memories together, defying the predictions of doctors and fighting for a longed-for future.