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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 BEHAVIOR

A mutation in the TP53 gene causes Li-Fraumeni syndrome, which increases the risk of developing cancer . Cleveland Clinic states that this disorder comes with a 90% chance of developing some type of cancer by age 60, and a 50% c

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