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In page Adams–Oliver syndrome:

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In rare cases, AOS can be associated with chromosomal translocations. A panel of candidate genes (including ALX4, ALX1, MSX1, MSX2, P63, RUNX2 and HOXD13) were tested but no disease-causing mutations were identified.[3][4] More recently, mutations in six genes have been identified, highlighting the Rho family of GTPases and the Notch signalling pathway as important factors in the pathogenesis of AOS.[citation needed]