Monarch Disease Ontology id MONDO_0007400 (Jackson-Weiss syndrome) (JWS) is a rare genetic disorder characterized by foot malformations (tarsal and metatarsal fusions; short, broad, medially deviated great toes) and in some patients craniosynostosis with facial anomalies. Hands are normal in affected patients. Also known as: JWS, craniosynostosis-midfacial hypoplasia-foot abnormalities syndrome.