A sperm donor with a rare cancer-causing genetic mutation has fathered nearly 200 children across 14 European countries, sparking concerns about the welfare of these young people. The man, identified as Donor 7069, carries a mutation in the TP53 gene, which codes for a protein that prevents cells from dividing uncontrollably.
As a result, many of his children are at risk of developing deadly cancers, including brain, blood, bone, and breast cancer. According to researchers, those who carry this mutation have up to a 90% chance of developing cancer by age 60, and half develop cancer by age 40.
The investigation found that the donor was unaffected by the condition but had the mutation present in around 20% of his sperm. The children conceived using his sperm are being monitored for signs of cancer, with some having already developed the disease.
One researcher, French oncologist Edwige Kasper, presented her findings at a genetics conference, revealing that 67 children were conceived using the same donor and had been diagnosed with cancers related to the TP53 mutation. These cases have raised concerns about the need for early monitoring and screening to increase the chances of survival for these young people.
It is estimated that only 1 in 5,000 to 1 in 20,000 individuals carry this type of genetic mutation, making the impact of Donor 7069's actions all the more significant. The investigation has led to calls for greater oversight and regulation of sperm banks to prevent similar cases from occurring in the future.
The full extent of Donor 7069's children is likely higher than identified, but researchers are working to identify and contact all those affected in order to provide them with access to critical monitoring and screening. As one researcher noted, "Itβs crucial that we get this information out there and make sure these young people can access the care they need."
As a result, many of his children are at risk of developing deadly cancers, including brain, blood, bone, and breast cancer. According to researchers, those who carry this mutation have up to a 90% chance of developing cancer by age 60, and half develop cancer by age 40.
The investigation found that the donor was unaffected by the condition but had the mutation present in around 20% of his sperm. The children conceived using his sperm are being monitored for signs of cancer, with some having already developed the disease.
One researcher, French oncologist Edwige Kasper, presented her findings at a genetics conference, revealing that 67 children were conceived using the same donor and had been diagnosed with cancers related to the TP53 mutation. These cases have raised concerns about the need for early monitoring and screening to increase the chances of survival for these young people.
It is estimated that only 1 in 5,000 to 1 in 20,000 individuals carry this type of genetic mutation, making the impact of Donor 7069's actions all the more significant. The investigation has led to calls for greater oversight and regulation of sperm banks to prevent similar cases from occurring in the future.
The full extent of Donor 7069's children is likely higher than identified, but researchers are working to identify and contact all those affected in order to provide them with access to critical monitoring and screening. As one researcher noted, "Itβs crucial that we get this information out there and make sure these young people can access the care they need."