March 13, 2026 · Prenatal diagnosis · DOI: 10.1002/pd.70108

Prenatal Deep Phenotyping in Genetic Syndromes Diagnosed in the First Trimester of Pregnancy

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The authors aimed to perform deep phenotyping of fetuses diagnosed with genetic syndromes during the first trimester using standardized HPO terminology. Their study of 293 fetuses revealed that chromosomal disorders were predominant, with polymalformed fetuses showing the highest diagnostic yield. The findings underscore the importance of standardized phenotypic descriptions in enhancing the diagnosis of genetic syndromes and highlight specific anomalies, such as ductus venosus agenesis, that may indicate certain conditions like RASopathies.

Ana Isabel Sanchez Barbero, Marta Rodríguez de Alba Freiría, María Jose Trujillo-Tiebas, Almudena Ávila Fernández, Fiona Blanco-Kelly, Fermina López Grondona, Saoud Swafiri, Andreea-Manuela Mirea, Elena Salgado Barbado, Carolina Sánchez Jimeno, Miguel Álvaro Navidad, Javier Plaza, Carmen Ayuso, Isabel Lorda-Sánchez

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