The article “The prognostic value of serum erythropoietin in patients with lower-risk myelodysplastic syndromes: a review of the literature and expert opinion”, written by Sophie Park, Charikleia Kelaidi, Mathieu Meunier, Nicole Casadevall, Aaron T. Gerds, and Uwe Platzbecker, was originally published electronically in SpringerLink) on October 25, 2019 without Open Access. The gene discussed is EPO; the disease is myelodysplastic syndrome.