Mutations in the SDHB gene are associated with extra-adrenal and/or malignant phaeochromocytomas. - Gimenez-Roqueplo,AP.; Favier,J.; Rustin,P.; Rieubland,C.; Crespin,M.; Nau,V.; Khau,VK.; Corvol,P.; Plouin,PF.; Jeunemaitre,X. (Cancer Res, 2003)