A sperm donor who unknowingly carried a rare cancer-causing gene has fathered almost 200 children across Europe. The EBU conducted an investigation into the donor and found his sperm was used in 67 clinics in 14 different countries. It was also sold to Ireland but it hasn’t been used to conceive any babies. The children carrying his DNA now have a 90% chance of developing cancer.

We get reaction to this with Dr John Kennedy, Medical Director at Thérapie Fertility.