- Reversible kallmann syndrome, delayed puberty, and isolated anosmia occurring in a single family with a mutation in the fibroblast growth factor receptor 1 gene. Pitteloud, N., Acierno, J.S., Meysing, A.U., Dwyer, A.A., Hayes, F.J., Crowley, W.F. J. Clin. Endocrinol. Metab. (2005)