Czeizel Endre, a prominent figure in Hungarian medical genetics, dedicated his entire life to the service of scientific research and popularization of knowledge. His work has impacted the lives of many individuals, and his recognition is significant not only within professional circles but also among the general public. After his death, many remember him as someone who made the world of genetics more understandable for laypeople. His activities in the field of medical genetics contributed to the popularization of genetic screenings, which can reduce the risk of numerous diseases. Leukemia, the most common type of cancer among children, is particularly important, as statistics show it is much more common among…