Odontogenic myxomas are not associated with GNAS1 mutations

摘要

Myxomas are rare tumors of unknown aetiology arising in the jaws. Myxomas are also diagnosed in soft tissues. Recent reports on Gs alpha subunit gene (GNAS1) mutations occasionally being identified in soft tissue myxomas in non-syndromatic patients and the effects of myxoma on bone in variants of fibrous dysplasia led us to re-examine the putative role of GNAS1 mutations in odontogenic myxoma. Material and Methods: Seven biopsies from patients with confirmed diagnosis of odontogenic myxoma and two cases of fibrous dyplasia of the jaw were investigated for GNAS1 mutations by polymerase chain reaction. Results: Although GNAS1 was mutated in cases of fibrous dysplasia, no GNAS1 mutations were detected in odontogenic myxomas. Conclusion: The development of odontogenic myxoma is independent of mutations of GNAS1.