Yang M, Gunnarsson R, Duployez N, Zaliova M, Zuna J, Johansson B, Paulsson K. Postnatal origin of the chromosomal gains in older patients with high hyperdiploid acute lymphoblastic leukemia. Haematologica 2024;109(6):1951-1955; https://doi.org/10.3324/haematol.2023.284128.