A man was unaware that he carried a rare cancer-causing gene and donated his sperm to dozens of people across Europe. At least 67 have been conceived with the man's sperm, and now 10 of them have ...

There are term limits — why not sperm limits? The debate over how often a donor’s sperm should be used to conceive children has been reignited in Europe, after 67 children were birthed accidentally ...

The donor's sperm carried a mutation that causes Li-Fraumeni syndrome or LFS, one of the most severe inherited cancer predisposition syndromes. A recent case in Europe has reignited debate over the ...