A sperm donor with a rare cancer-causing mutation has fathered nearly 200 children across Europe, leading to serious health concerns. The mutation in the TP53 gene can cause Li Fraumeni syndrome, increasing cancer risk significantly. The donor's sperm was used in multiple countries, and the European Sperm Bank has acknowledged the issue, expressing sympathy to affected families. Experts highlight regulatory failures in donor screening and the need for stricter limits on donor use. Teljes cikk (Euronews.com)