The RAS/mitogen-activated protein kinase (MAPK) signaling pathway and associated
developmental syndromes (indicated by dashed lines). The MAPK signaling pathway
of protein kinases is critically involved in cell proliferation,
differentiation, motility, apoptosis, and senescence. The RAS/MAPK pathway
proteins with germline mutations in their respective genes are associated with
Noonan (NS), Noonan syndrome with multiple lentigines (NSML)(LEOPARD),
neurofibromatosis, type 1 (NF1), capillary malformation–arteriovenous
malformation (CM-AVM) due to RAS1 mutations, Costello (CS),
Cardiofaciocutaneous (CFC) and Legius syndromes. Figure reprinted from Rauen (2013) with permission from Elsevier.
[Color figure can be viewed at wileyonlinelibrary.com]