PMID- 30149991 OWN - NLM STAT- MEDLINE DCOM- 20181107 LR - 20181107 IS - 1465-3931 (Electronic) IS - 0031-3025 (Linking) VI - 50 IP - 6 DP - 2018 Oct TI - Multiple endocrine neoplasia type 1: clinical correlates of MEN1 gene methylation. PG - 622-628 LID - S0031-3025(16)40563-5 [pii] LID - 10.1016/j.pathol.2018.05.006 [doi] AB - Multiple endocrine neoplasia type 1 (MEN 1) has marked severity variation between individuals with the same mutation. To investigate any relationship between promoter methylation and clinical features, blood and tissue samples were collected from 16 members of the Tasman 1 MEN 1 kindred carrying a common splice site mutation and 7 patients with sporadic MEN 1. Methylation at 39 CpGs in the MEN1 promoter were assessed in formalin fixed, paraffin embedded parathyroid tissue. Clinical disease severity markers included age at first parathyroid operation, parathyroid hormone level and corrected serum calcium levels. Six patients with sporadic hyperparathyroidism were used for comparison. Minimal methylation was observed in all patients across CpG sites 1-23. In contrast, hypermethylation was observed at CpG sites 24-31 in MEN 1 patients, a pattern not observed in patients with non-MEN 1 parathyroid disease. Mean methylation at sites 24-31 was significantly correlated with age at first parathyroid operation (r = 0.652, p = 0.041). A permutation test, utilising the mean correlation coefficient (r = -0.401) revealed a possible association between relative PHPT severity and methylation score for each significant CpG site (p < 0.103). This novel study reveals evidence supporting a possible association between altered MEN1 promoter methylation and clinical severity of disease. CI - Copyright (c) 2018 Royal College of Pathologists of Australasia. Published by Elsevier B.V. All rights reserved. FAU - De Paoli-Iseppi, Ricardo AU - De Paoli-Iseppi R AD - Cancer Genetics and Immunology, Menzies Institute for Medical Research, University of Tasmania, Hobart, Tas, Australia. FAU - Prentice, Louise AU - Prentice L AD - School of Medicine, University of Tasmania, Hobart, Tas, Australia; Royal Hobart Hospital, Hobart, Tas, Australia. FAU - Marthick, James R AU - Marthick JR AD - Cancer Genetics and Immunology, Menzies Institute for Medical Research, University of Tasmania, Hobart, Tas, Australia. FAU - Thomson, Russell AU - Thomson R AD - Cancer Genetics and Immunology, Menzies Institute for Medical Research, University of Tasmania, Hobart, Tas, Australia. FAU - Holloway, Adele F AU - Holloway AF AD - School of Medicine, University of Tasmania, Hobart, Tas, Australia. FAU - Dickinson, Joanne L AU - Dickinson JL AD - Cancer Genetics and Immunology, Menzies Institute for Medical Research, University of Tasmania, Hobart, Tas, Australia. Electronic address: Jo.Dickinson@utas.edu.au. FAU - Burgess, John AU - Burgess J AD - School of Medicine, University of Tasmania, Hobart, Tas, Australia; Royal Hobart Hospital, Hobart, Tas, Australia. LA - eng PT - Journal Article DEP - 20180824 PL - England TA - Pathology JT - Pathology JID - 0175411 RN - 0 (MEN1 protein, human) RN - 0 (Proto-Oncogene Proteins) SB - IM MH - Adolescent MH - Adult MH - DNA Methylation/*genetics MH - Female MH - Humans MH - Hyperparathyroidism/genetics MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - Promoter Regions, Genetic/genetics MH - Proto-Oncogene Proteins/*genetics MH - Young Adult OTO - NOTNLM OT - MEN 1 OT - Methylation OT - familial OT - parathyroid EDAT- 2018/08/29 06:00 MHDA- 2018/11/08 06:00 CRDT- 2018/08/29 06:00 PHST- 2016/12/20 00:00 [received] PHST- 2018/05/18 00:00 [revised] PHST- 2018/05/22 00:00 [accepted] PHST- 2018/08/29 06:00 [pubmed] PHST- 2018/11/08 06:00 [medline] PHST- 2018/08/29 06:00 [entrez] AID - S0031-3025(16)40563-5 [pii] AID - 10.1016/j.pathol.2018.05.006 [doi] PST - ppublish SO - Pathology. 2018 Oct;50(6):622-628. doi: 10.1016/j.pathol.2018.05.006. Epub 2018 Aug 24.