‘90% chance of cancer’ rare gene male sperm donation… What happens to 197 births?

The problem is that the proportion of people who inherit a mutation are known to be able to avoid cancer throughout their lives is extremely small.

According to the Cleveland Clinic in the United States, people with this disease have a 90% chance of developing cancer by the age of 60, and the rate of developing cancer before the age of 40 is about 50%.

In fact, 10 of the children born with Mr. A’s sperm were diagnosed with cancer such as brain tumor and Hodgkin’s lymphoma, and some have already died.

How does this gene still survive?

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