June 18, 2026 · Human reproduction (Oxford, England) · DOI: 10.1093/humrep/deag093

A population-based study of the co-occurrence of hypospadias and congenital heart defects among boys conceived with in vitro fertilization†

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The authors aimed to investigate the association between hypospadias and congenital heart defects (CHD) in boys conceived through in vitro fertilization (IVF). They found a small but significant increased risk for co-occurring hypospadias and CHD among IVF-conceived boys, which was not fully explained by other risk factors, suggesting that IVF may contribute to these birth defects. The study highlights the need for further research to understand the mechanisms behind these associations and to explore targeted screening opportunities.

Melissa A Richard, Barbara Luke, Elwin Jaime, Sarah C Fisher, Dayana Betancourt, Mahsa M Yazdy, Sarah L Stone, Nina E Forestieri, Ethan Wantman, Valerie L Baker, Michael L Eisenberg, Carrie Williams, Alastair G Sutcliffe, Philip J Lupo

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