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Título:	Novel association of the obesity risk-allele near Fas Apoptotic Inhibitory Molecule 2 (FAIM2) gene with heart rate and study of its effects on myocardial infarction in diabetic participants of the PREDIMED trial
Autor/a:	Corella Piquer, Dolores; Sorlí, José V.; González, José I.; Ortega Azorín, Carolina; Fitó Colomer, Montserrat; Bulló, Mònica; Martínez-González, Miguel Ángel, 1957-; Ros Rahola, Emilio; Arós, Fernando; Lapetra, José; Gómez Gracia, Enrique; Serra Majem, Lluís; Ruiz-Gutiérrez, Valentina; Fiol Sala, Miguel; Coltell, Óscar; Vinyoles, Ernest; Pintó Sala, Xavier; Martí, Amelia; Saiz, Carmen; Ordovás, José M.; Estruch Riba, Ramon
Notas:	BACKGROUND: The Fas apoptotic pathway has been implicated in type 2 diabetes and cardiovascular disease. Although a polymorphism (rs7138803; G > A) near the Fas apoptotic inhibitory molecule 2 (FAIM2) locus has been related to obesity, its association with other cardiovascular risk factors and disease remains uncertain. METHODS: We analyzed the association between the FAIM2-rs7138803 polymorphism and obesity, blood pressure and heart rate in 7,161 participants (48.3% with type 2 diabetes) in the PREDIMED study at baseline. We also explored gene-diet interactions with adherence to the Mediterranean diet (MedDiet) and examined the effects of the polymorphism on cardiovascular disease incidence per diabetes status after a median 4.8-year dietary intervention (MedDiet versus control group) follow-up. RESULTS: We replicated the association between the FAIM2-rs7138803 polymorphism and greater obesity risk (OR: 1.08; 95% CI: 1.01-1.16; P = 0.011; per-A allele). Moreover, we detected novel associations of this polymorphism with higher diastolic blood pressure (DBP) and heart rate at baseline (B = 1.07; 95% CI: 0.97-1.28 bmp in AA vs G-carriers for the whole population), that remained statistically significant even after adjustment for body mass index (P = 0.012) and correction for multiple comparisons. This association was greater and statistically significant in type-2 diabetic subjects (B = 1.44: 95% CI: 0.23-2.56 bmp; P = 0.010 for AA versus G-carriers). Likewise, these findings were also observed longitudinally over 5-year follow-up. Nevertheless, we found no statistically significant gene-diet interactions with MedDiet for this trait. On analyzing myocardial infarction risk, we detected a nominally significant (P = 0.041) association in type-2 diabetic subjects (HR: 1.86; 95% CI:1.03-3.37 for AA versus G-carriers), although this association did not remain statistically significant following correction for multiple comparisons. CONCLUSIONS: We confirmed the FAIM2-rs7138803 relationship with obesity and identified novel and consistent associations with heart rate in particular in type 2 diabetic subjects. Furthermore, our results suggest a possible association of this polymorphism with higher myocardial infarction risk in type-2 diabetic subjects, although this result needs to be replicated as it could represent a false positive.
Materia(s):	-Obesitat -Infart de miocardi -Diabetis -Hàbits alimentaris -Cuina mediterrània -Assaigs clínics -Obesity -Myocardial infarction -Diabetes -Food habits -Mediterranean cooking -Clinical trials
Derechos:	cc-by (c) Corella, Dolores et al., 2014 http://creativecommons.org/licenses/by/3.0/es
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	BioMed Central
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