Belgian Donor Scandal Deepens: 121 Sperm Donors Exceed Legal Family Limit

At least 121 sperm donors in Belgium have had their genetic material used with more families than legally permitted, according to new data from the Federal Agency for Medicines and Health Products (FAGG) reported by VRT NWS. The figure marks a significant escalation in a donor scandal that has been unfolding since May 2025, with 31 new cases added this year alone. Belgian law has limited each sperm donor to a maximum of six families since 2007.

A Rapidly Expanding Crisis

The latest numbers represent a sharp jump from the 93 donors identified in March 2026, when VRT NWS reported that the count had tripled from previously known figures. According to the available data, more than ten donors have each fathered more than 20 children in Belgium. The FAGG, which has been tracking donor usage in a database for two years, confirmed that the cases involve both domestic and foreign donors, with or without genetic abnormalities.

The rapid increase in documented violations reflects heightened vigilance following earlier scandals rather than a sudden surge in new breaches. The FAGG has intensified inspections, consolidated historical data from fertility centers, and centers themselves have begun proactively reporting violations.

Root Causes: A Decade of Regulatory Gaps

The legal limit of six families per donor exists to prevent large groups of half-siblings from forming who might unknowingly enter relationships with each other, and to limit the impact if genetic problems emerge in a donor. Yet for years, enforcement was severely deficient.

A national donor registry (Fertidata) was only established in 2024, meaning fertility centers could not previously check how often a donor was used across different institutions. As De Morgen noted, centers were effectively operating blind when it came to cross-institutional donor usage before the registry existed.

The regulatory failures extend beyond sperm donors. In July 2026, it emerged that two egg donors had also exceeded the six-family limit, with genetic material used for seven and eight families respectively, as reported by Het Laatste Nieuws.

Fertility Centers Under Scrutiny

In April 2026, VRT NWS revealed that at least seven Belgian fertility centers had themselves exceeded the six-family limit within their own hospitals, accounting for 35 violations. Ten police reports were filed with the public prosecutor’s office regarding these breaches. Shari Mackens, vice-chair of the Belgian Society for Reproductive Medicine (BSRM), emphasized that the law was “not deliberately or intentionally violated by the centers in the past,” but acknowledged that the true number of violations is likely higher. “It seems unlikely to us that there would be only 35 violations within a center itself,” she said.

Fertility centers that exceed the limit face fines ranging from EUR 8,000 to EUR 80,000, while doctors face potential prison sentences of one to five years.

Institutional Failure and Political Fallout

The scandal has exposed profound institutional failures at the FAGG. An audit conducted in November 2025 found that the agency had only two inspectors for the entire country in 2022, and that no clear escalation procedure existed for reporting problems to higher levels. Health Minister Frank Vandenbroucke appointed Dirk Ramaekers as crisis manager at the FAGG, stating that his trust in the agency had been “seriously damaged,” as VRT NWS reported.

N-VA parliament member Frieda Gijbels has been a vocal critic of the agency’s handling of the crisis. “For years the legislation was not followed, without the FAGG intervening,” she said. “This is about human lives. About children who have the right to know who they descend from. About parents who were allowed to trust a government institution that does its job. That trust has been betrayed: not once, but time and again.”

The Trigger: A Danish Donor with a Cancer-Causing Gene

The broader scandal traces back to May 2025, when it emerged that a Danish sperm donor carrying a TP53 genetic mutation — which significantly increases cancer risk — had fathered 53 children at 38 families in Belgium. The FAGG had been informed about the donor in late 2023 but did not inform Minister Vandenbroucke until May 2025, after press inquiries. The donor ultimately fathered at least 197 children across Europe.

Policy Response: Anonymity Abolished, Recovery Plan Launched

In February 2026, the federal government abolished donor anonymity for egg and sperm donors, as VRT NWS reported. Children will be able to access non-identifying information about their biological parents from age 12 and identifying information from age 16. Minister Vandenbroucke framed the change as putting the child first: “Knowing what wood you are cut from helps you better understand who you are.”

The FAGG presented a comprehensive recovery plan in April 2026, which includes six additional inspectors, public inspection reports, administrative fines, and improved data exchange, according to VRT NWS. All fertility centers will undergo inspections this year and next, and the national donor registry will be expanded with historical data starting in July 2027.

The Dutch Mass Donor Connection

The Belgian scandal has also intersected with developments in the Netherlands. Dutch mass donor Simon, a 43-year-old from the Groningen region, has admitted to fathering at least 199 children, including 11 in Belgium, as VRT NWS reported. The FAGG is investigating whether he donated through Belgian clinics or the informal circuit. In a letter to donor parents, Simon wrote: “I believed I was doing the right thing and helping people… Now I know I have seriously failed you.”

Impact on Donor Supply

The scandals have taken a toll on donor availability. Fertility centers report a sharp decline in new donor registrations, with UZ Gent seeing sperm donor registrations drop from ten in 2025 to zero by July 2026. Belgium already faced a sperm donor shortage, with demand exceeding supply.

What’s Next

Minister Vandenbroucke has acknowledged that more violations are likely to surface as the donor registry is expanded with historical data. “What happened in the past we cannot set right anymore,” he said. The full scope of the scandal may not be known until mid-2027, when families will be able to access donor data directly through the Central Register. For the affected families and donor children, the questions of identity, health, and trust will persist long after the regulatory reforms are implemented.