Clinical and pathologic findings of Möbius syndrome in twins, ie, like-sex, physical resemblance, and almost identical pathologic anatomy of the central nervous system, are suggestive of identical twinning. To our knowledge, this is the first report of Möbius syndrome in twins.
Hanissian AS, Fuste F, Hayes WT, Duncan JM. Möbius Syndrome in Twins. Am J Dis Child. 1970;120(5):472-475. doi:10.1001/archpedi.1970.02100100136020