A Dutch fertility doctor used his own sperm to father more than 49 children with mothers who did not know he was the donor, reported AP.
The case of Dr Karbaat, who died in 2017 at age 89, has riveted the Netherlands, due to its mix of unethical medical behaviour, privacy issues, DNA testing, legal wrangling and the rights of children to know who their parents are.
DNA tests revealed last week that Karbaat, who died two years ago, was the biological father of at least 49 children. The real number could be higher and spread beyond the Netherlands, even as far as the United States.
Publicity surrounding the case means that the extended family may grow even larger as more people check their DNA against Karbaat's.
Meanwhile, dozens of people who now know who their biological father is are coming to terms with the news. One of them, Joey Hoofdman, said, "we are all happy with the clarity."