Sperm from a single donor in Europe has reportedly been used to conceive at least 67 pregnancies, although the donor carried a rare cancer-causing mutation.The donor’s mutation has been linked to cancer diagnoses in 10 of these children, according to a report by The Guardian.The case was brought to light after two families separately contacted their fertility clinics after their children's cancer diagnoses were linked to a rare genetic variant called TP53.PROSTATE CANCER RISK INCREASES BY 45% AMONG MEN WHO SHARE ONE TROUBLING BEHAVIORA mutation in the TP53 gene causes Li-Fraumeni syndrome, which increases the risk of developing cancer. Cleveland