Managing risks for genetic conditions in donor sperm treatment: current practices in Belgian fertility clinics

How do fertility clinics in Belgium manage risks for genetic conditions in donor sperm treatment?

An electronic questionnaire was distributed to all fertility clinics in Belgium in June 2023, focusing on treatments with anonymous sperm donors from 2018 to 2022. Responses from 15 clinics were analysed anonymously using IBM SPSS statistics.

All clinics assessed donor risks, including a personal and family history, conventional karyotyping and (for 83.3% of the clinics) carrier screening for common autosomal recessive conditions. For recipients, 58.3% of the clinics relied only on a personal and family history. Despite efforts, the suspicion or detection of genetic conditions in donor sperm treatment was prevalent, with 9.4 adverse events reported per 100 children born. When adverse events occurred, most clinics (58.3%) would not inform the donor if no additional genetic testing was needed. Around 1 in 4 (26.7%) clinics always informed recipients about an adverse event possibly related to their donor. An equal number (26.7%) categorically ruled out the use of spermatozoa from a donor after an adverse event was traced back to his DNA, and 53.3% would not consider using the donor when the adverse event was not genetically confirmed. For the other clinics, deciding when to disclose new genetic risk information or when to allow the use of a donor linked to an adverse event was a complex matter involving different considerations.

Although suspected or detected genetic conditions linked to donor treatments were common, there was wide variation in how Belgian clinics prevented and managed these situations.