Stevenson, David A.Schill, LisaSchoyer, LisaAndresen, Brage S.Bakker, AnnetteBayrak-Toydemir, PinarBurkitt-Wright, EmmaChatfield, KathrynElefteriou, FlorentElgersma, YpeFisher, Michael J.Franz, DavidGelb, Bruce D.Goriely, AnneGripp, Karen W.Hardan, Antonio Y.Keppler-Noreuil, Kim M.Kerr, BronwynKorf, BruceLeoni, ChiaraMcCormick, FrankPlotkin, ScottRauen, Katherine A.Reilly, KarlyneRoberts, AmySandler, AbbySiegel, DawnWalsh, KarinWidemann, Brigitte C.2017-05-152016Stevenson, David A., Lisa Schill, Lisa Schoyer, Brage S. Andresen, Annette Bakker, Pinar Bayrak-Toydemir, Emma Burkitt-Wright, et al. 2016. “The Fourth International Symposium on Genetic Disorders of the Ras/MAPK Pathway.” American Journal of Medical Genetics Part A 170 (8) (May 7): 1959–1966. Portico. doi:10.1002/ajmg.a.37723.1552-4825http://nrs.harvard.edu/urn-3:HUL.InstRepos:32674685The RASopathies are a group of disorders due to variations of genes associated with the Ras/MAPK pathway. Some of the RASopathies include neurofibromatosis type 1 (NF1), Noonan syndrome, Noonan syndrome with multiple lentigines, cardiofaciocutaneous (CFC) syndrome, Costello syndrome, Legius syndrome, and capillary malformation–arteriovenous malformation (CM-AVM) syndrome. In combination, the RASopathies are a frequent group of genetic disorders. This report summarizes the proceedings of the 4th International Symposium on Genetic Disorders of the Ras/MAPK pathway and highlights gaps in the field.en-USJournal Article2017-05-1510.1002/ajmg.a.37723