Monogenik obezite ön tanısı ile incelenen hastaların klinik, laboratuvar ve genetik sonuçlarının değerlendirilmesi
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Date
2021-01-04
Authors
Ayrancı, İlkay
Filibeli, Berna Eroğlu
Özyılmaz, Berk
Dündar, Bumin N
Journal Title
Journal ISSN
Volume Title
Publisher
Bursa Uludağ Üniversitesi
Abstract
Giriş: Şiddetli ve erken başlangıçlı obezitenin genetik nedenlerinde monogenik obezite formları önemli bir yer tutmaktadır. Bu çalışmada, kliniğimizde monogenik obezite ön tanısı ile takip edilen olguların klinik ve moleküler genetik analiz sonuçlarının değerlendirilmesi amaçlanmıştır. Gereç ve Yöntem: 2016-2018 yılları arasında kliniğimizde monogenik obezite ön tanısı ile moleküler genetik analiz yapılan olguların demografik, klinik ve biyokimyasal verileri geriye yönelik incelendi ve kaydedildi. Bulgular: Çalışmaya toplam 47 obez olgu (20 kız, 39 pubertal, ortalama yaş 14,3±3,2 yıl) alındı. Çalışmaya dahil edilen üç olguda MC4R’de patojenik varyant, bir olguda veri tabanında patojen varyant olarak kabul edilmeyen LEPR’de heterozigot varyant saptandı. MC4R geninde sekans varyantı sıklığı %6,4, LEPR geninde sekans varyantı sıklığı %2,1 olarak bulundu. Sonuç: Çalışmamızda monogenik obezite şüphesiyle tetkik edilen çocukların %8,5’inde (n=4) sekans varyantı saptandı. Bu olgularda obezite yaşamın ilk bir yılında gelişmişti ve ebeveynlerden en az birinde obezite mevcuttu. Bu nedenle, erken başlangıçlı obeziteye, ailesel obezite öyküsü eşlik ediyor ise ayırıcı tanıda öncelikle monogenik obezite formlarından olan MC4R defekti düşünülmelidir.
Introduction:Monogenic forms of obesity have an important place in the genetic causes of severe and early-onset obesity. In this study, it was aimed to evaluate the clinical and molecular genetic analysis results of the cases followed up with a pre diagnosis of monogenic obesity in our clinic. Materials and Methods: The demographic, clinical and biochemical data of the patients had molecular genetic analysis with a pre-diagnosis of monogenic obesity in our clinic between 2016 and 2018 were retrospectively analyzed and recorded. Results: 47 obese cases (20 girls, 39 pubertal, mean age 14.3±3.2 years) were included in the study. Pathogenic variant in MC4R was detected in three cases, and heterozygous variant in LEPR, was not accepted as a pathogen variant in the database in one case. The frequency of sequence variants in the MC4R gene was 6.4%, and the frequency of the sequence variants in the LEPR gene was 2.1%. Conclusions: In our study, 8.5% (n=4) sequence variant was found in children who were examined with suspicion of monogenic obesity. In these cases, obesity developed in the first year of life and at least one parent had obesity. Therefore, if early-onset obesity is accompanied by a family history of obesity, MC4R defect, one of the monogenic obesity forms, should be considered in differential diagnosis.
Introduction:Monogenic forms of obesity have an important place in the genetic causes of severe and early-onset obesity. In this study, it was aimed to evaluate the clinical and molecular genetic analysis results of the cases followed up with a pre diagnosis of monogenic obesity in our clinic. Materials and Methods: The demographic, clinical and biochemical data of the patients had molecular genetic analysis with a pre-diagnosis of monogenic obesity in our clinic between 2016 and 2018 were retrospectively analyzed and recorded. Results: 47 obese cases (20 girls, 39 pubertal, mean age 14.3±3.2 years) were included in the study. Pathogenic variant in MC4R was detected in three cases, and heterozygous variant in LEPR, was not accepted as a pathogen variant in the database in one case. The frequency of sequence variants in the MC4R gene was 6.4%, and the frequency of the sequence variants in the LEPR gene was 2.1%. Conclusions: In our study, 8.5% (n=4) sequence variant was found in children who were examined with suspicion of monogenic obesity. In these cases, obesity developed in the first year of life and at least one parent had obesity. Therefore, if early-onset obesity is accompanied by a family history of obesity, MC4R defect, one of the monogenic obesity forms, should be considered in differential diagnosis.
Description
Keywords
Erken başlangıçlı, Ailesel, Monogenik obezite, Early-onset, Familial, Monogenic obesity
Citation
Ayrancı, İ. vd. (2021). ''Monogenik obezite ön tanısı ile incelenen hastaların klinik, laboratuvar ve genetik sonuçlarının değerlendirilmesi''. Güncel Pediatri Dergisi, 19(1), 52-59.