Increased Population Risk of AIP-Related Acromegaly and Gigantism in Ireland.

Autor: Radian, Serban, Diekmann, Yoan, Gabrovska, Plamena, Holland, Brendan, Bradley, Lisa, Wallace, Helen, Stals, Karen, Bussell, Anna‐Marie, McGurren, Karen, Cuesta, Martin, Ryan, Anthony W., Herincs, Maria, Hernández‐Ramírez, Laura C., Holland, Aidan, Samuels, Jade, Aflorei, Elena Daniela, Barry, Sayka, Dénes, Judit, Pernicova, Ida, Stiles, Craig E.
Zdroj: Human Mutation; Jan2017, Vol. 38 Issue 1, p78-85, 8p
Abstrakt: ABSTRACT The aryl hydrocarbon receptor interacting protein ( AIP) founder mutation R304* (or p.R304*; NM_003977.3:c.910C>T, p.Arg304Ter) identified in Northern Ireland (NI) predisposes to acromegaly/gigantism; its population health impact remains unexplored. We measured R304* carrier frequency in 936 Mid Ulster, 1,000 Greater Belfast (both in NI) and 2,094 Republic of Ireland (ROI) volunteers and in 116 NI or ROI acromegaly/gigantism patients. Carrier frequencies were 0.0064 in Mid Ulster (95%CI = 0.0027-0.013; P = 0.0005 vs. ROI), 0.001 in Greater Belfast (0.00011-0.0047) and zero in ROI (0-0.0014). R304* prevalence was elevated in acromegaly/gigantism patients in NI (11/87, 12.6%, P < 0.05), but not in ROI (2/29, 6.8%) versus non-Irish patients (0-2.41%). Haploblock conservation supported a common ancestor for all the 18 identified Irish pedigrees (81 carriers, 30 affected). Time to most recent common ancestor (tMRCA) was 2550 (1,275-5,000) years. tMRCA-based simulations predicted 432 (90-5,175) current carriers, including 86 affected (18-1,035) for 20% penetrance. In conclusion, R304* is frequent in Mid Ulster, resulting in numerous acromegaly/gigantism cases. tMRCA is consistent with historical/folklore accounts of Irish giants. Forward simulations predict many undetected carriers; geographically targeted population screening improves asymptomatic carrier identification, complementing clinical testing of patients/relatives. We generated disease awareness locally, necessary for early diagnosis and improved outcomes of AIP-related disease. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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