Fig. 2: Genotype distribution in RASopathy patients according to prenatal ultrasound (US) findings.

Gene-specific contributions to suggestive prenatal phenotypic features for the 72 patients with a positive result and available longitudinal data (47 prenatal and 25 postnatal positive cases). CH cystic hygroma, CHD congenital heart disease, HCM hypertrophic cardiomyopathy. Others: BRAF, CBL, MAP2K1, NRAS, RASA1, and SOS2.