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Objective: Non-alcoholic fatty liver disease (NAFLD) negatively impacts on renal function with the contribution of the I148M variant in the patatin like phospholipase containing domain 3 (PNPLA3) gene. We hypothesized that children with prediabetes present with lower estimated glomerular filtration rate (eGFR) than those with normal glucose tolerance (NGT) and that the 148M PNPLA3 allele could play a worsening role. We aimed evaluating the influence of the I148M PNPLA3 polymorphism on the relationship between eGFR and prediabetes in children with obesity. Methods: One thousand thirty-six children underwent to complete assessment and were genotyped for the I148M PNPLA3 polymorphism. Results: Patients with prediabetes showed lower eGFR levels (171.03±40.32 vs. 190.80±41.71ml/min/1.73 m2; p=0.001) and higher prevalence of NAFLD (80% vs. 59%; p=0.003) than those with NGT. Children with prediabetes showed lower eGFR levels than those with NGT (150.97±14.56 vs 192.88±40.09; p

Rationale & Objective: The objective of this study is to evaluate the effect of body mass index (BMI) on estimated glomerular filtration rate (eGFR) levels in children with congenital solitary kidney (CSK). Moreover, we evaluated if other factors could influence this relationship. Study Design: Multicenter cross-sectional study. Setting & Participants: University hospital pediatrics departments. Subjects: Two hundred eighty-one patients with CSK. Predictors: Weight, height, BMI-SDS (standard deviation score), duration of overweight/obesity, pubertal stage, systolic (SBP) and diastolic (DBP) blood pressure, eGFR, and renal ultrasound were obtained at the last follow-up visit. The population was classified on the basis of nutritional status and divided in tertiles for duration of overweight/obesity. We compared eGFR levels among these categories. A simple regression was used to correlate eGFR with BMI-SDS. To evaluate if other factors could influence the relationship between eGFR and BMI-SDS, a general linear model was performed, including gender, birth weight