A rare genetic polymalformative syndrome with increased risk of developing cancer, with characteristics of a Noonan-like phenotype, including typical dysmorphic facial features (such as high forehead, hypertelorism, downslanting palpebral fissures, ptosis, low-set ears, prominent philtrum and short neck with or without pterygium colli), thoracic abnormalities, congenital heart defects and short stature, associated with a very frequent occurrence of juvenile myelomonocytic leukemia. Developmental delay, ectodermal anomalies, joint laxity and hypotonia may also be associated. Caused by heterozygous mutation in the CBL gene. [from
SNOMEDCT_US]