title: A novel germline mutation of the MEN1 gene caused multiple endocrine neoplasia type 1 in a Chinese young man and 1 year follow-up.
abstract: BACKGROUND
  Multiple endocrine neoplasia type 1 (MEN 1) is an autosomal dominant cancer predisposition syndrome which manifests a variety of endocrine and non-endocrine neoplasms and lesions. Because of its complexity in clinical manifestations, it is always difficult to set up the diagnosis in the early stage of the disease.
  
  
  OBJECTIVE
  Using genetic diagnosis to identify and describe the process of the disease from the very beginning and followed the treatment result in 1 year.
  
  
  METHODS
  In this assay, a Chinese young man aged 31 with parathyroid hyperplasia, suspected gastrinoma and an enlarged pituitary with elevated level of prolactin (PRL) and growth hormone (GH) was admitted to our Department ward. We performed genetic analysis in his family and described a new nonsense mutation at codon 308 in exon 6 of the MEN1 gene, where a cytosine residue was exchanged for guanine residue (TCA > TGA), and a termination condon (S308X) occurred. During the 1 year follow up, typical manifestations emerged in this kindred and further confirmed the diagnosis of familial MEN 1.
  
  
  CONCLUSIONS
  We presented a case of MEN 1 from its early stage and followed the progression. Meanwhile, the mutation in this kindred has not been reported and our finding can contribute to better understanding about this disease.
authors.affiliation: Department of Endocrinology and Metabolism, Peking University People's Hospital, Beijing, China. xueyaohan@sina.com  
authors.forename: W
authors.initials: W
authors.lastname: Liu
authors.forename: X
authors.initials: X
authors.lastname: Han
authors.forename: Z
authors.initials: Z
authors.lastname: Hu
authors.forename: X
authors.initials: X
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao
authors.forename: L
authors.initials: L
authors.lastname: Ji
mesh_terms: D000328:Adult; D005500:Follow-Up Studies; D018095:Germ-Line Mutation; D019382:Human Growth Hormone / Q000097:blood; D006801:Humans; D008297:Male; D018761:Multiple Endocrine Neoplasia Type 1 / Q000097:blood / Q000235:genetics*; D010375:Pedigree; D011388:Prolactin / Q000097:blood; D011518:Proto-Oncogene Proteins / Q000235:genetics*
chemical_list: C105373:MEN1 protein, human; D011518:Proto-Oncogene Proteins; D019382:Human Growth Hormone; D011388:Prolactin