To summarize the mutations related to MS, BSP, and OMD, we searched the PubMed database using the following search strategies: (Meige syndrome*[text word] OR blepharospasm [text word] OR oromandibular dystonia [text word] OR “Meige syndrome” [MESH] OR “blepharospasm” [MESH] OR “oromandibular dystonia” [MESH]) AND (mutation* [text word] OR polymorphism*[text word] OR variant*[text word]). This evidence concerns the gene IBSP and benign essential blepharospasm.