- Mutations in Gng3lg and AGPAT2 in Berardinelli-Seip congenital lipodystrophy and Brunzell syndrome: phenotype variability suggests important modifier effects. Fu, M., Kazlauskaite, R., Baracho, M.d.e. .F., Santos, M.G., Brandão-Neto, J., Villares, S., Celi, F.S., Wajchenberg, B.L., Shuldiner, A.R. J. Clin. Endocrinol. Metab. (2004)