Abstract
Introduction: 4q35 deletion is a rare chromosomal syndrome with a wide range of phenotypes, which can be challenging to detect through prenatal ultrasound. This study aimed to summarize the fetal phenotypes of patients with 4q35 deletion. Case Presentation: The study included four fetuses with 4q35 deletion, with detailed records of prenatal ultrasound and genetic testing results. These cases included following phenotypes, fetal growth restriction (FGR) (2/4), cystic hygroma (2/4), single umbilical artery (1/4), and fused kidney (1/4). One case was terminated, while the other three were born and showed no obvious abnormalities at the 1-year follow-up. Previous reports have described the fetal phenotype of 4q35 deletion in 6 patients from five families, with prenatal phenotypes including FGR (2/6), cardiac structural abnormalities (1/6), brain ventriculomegaly (1/6), oligohydramnios (1/6), and multicystic dysplastic kidneys (1/6). Conclusion: Overall, the phenotypes of fetuses with 4q35 deletion are diverse, with FGR potentially being a significant phenotype in these cases.
Journal Section:
Novel Insights from Clinical Practice
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