There was very high consensus (median score = 10/10) for four proposed changes: revising criteria to clearly define mosaic NF1; adding genetic diagnosis, without implying that genetic testing is required or recommended for diagnosis; replacing thinning of a long bone by anterolateral bowing of the lower limb; and retaining the specified criteria regarding neurofibromas, optic glioma, and Lisch nodules with minor wording changes for the latter two criteria. The gene discussed is NF1; the disease is plexiform neurofibroma.