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Long-term effects of bariatric surgery in patients with obesity and chromosome 16 p11.2 microdeletion

Journal article
Authors Felipe M. Kristensson
Johanna C. Andersson-Assarsson
Noora Kanerva
M. Peltonen
Björn Carlsson
Lena M S Carlsson
Published in Surgery for Obesity and Related Diseases
Volume 13
Issue 8
Pages 1321-1326
ISSN 1550-7289
Publication year 2017
Published at Institute of Medicine
Pages 1321-1326
Language en
Links doi.org/10.1016/j.soard.2017.04.024
Keywords Obesity, Bariatric surgery, Chromosome 16 p11.2 microdeletion, health-care needs, developmental-disabilities, children
Subject categories Surgery

Abstract

Background: Chromosome 16 p11.2 microdeletion is associated with early-onset obesity. Information is limited about the effect of bariatric surgery in patients with genetic obesity. Objective: To examine the effects of bariatric surgery in obese patients with chromosome 16 p11.2 microdeletion. Methods: The Swedish Obese Subjects study is a prospective study with 2010 participants receiving bariatric surgery. DNA was available for 1843 participants. Multiplex ligation-dependent probe amplification was used to identify 16 p11.2 microdeletion carriers. Follow-up time was 10 years. In carriers and noncarriers, follow-up rate was 86% and 82%, respectively, at 10 years. Results: Nine carriers of the chromosome 16 p11.2 microdeletion (9/1843, .49%) were found. At baseline, most risk factors were similar; however, carriers had higher body mass index (BMI), insulin levels, and systolic blood pressure compared to noncarriers. At the 1 -year examination, the percent excess BMI lost (%EBMIL) in carriers and noncarriers was 71.9 and 62.2, respectively; P = .031 (37.9 and 30.6 kg). This was followed by partial weight regain in both groups, and after 10 years %BBMIL was 25.5 and 41.5 (15.7 and 21.3 kg), respectively (P = .377). Changes in risk factors were similar in the carriers and noncarriers. Two carriers who had type 2 diabetes at baseline were both in remission at 2 -year follow-up but relapsed at 10 -year follow-up. Perceived health status was similar in carriers and noncarriers during follow-up (overall P = .198). Conclusions: Despite a small sample size, our results indicate that bariatric surgery is a treatment option for obese patients with chromosome 16 p11.2 microdeletion. (Surg Obes Relat Dis 2017;13:1321-1326.) (C) 2017 American Society for Metabolic and Bariatric Surgery. All rights reserved.

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