LGALS3 and atrial fibrillation: Several findings are of special importance: (i) Gal-3 levels are higher in AF patients than in AF-free controls, however, this seems to be mediated by higher BMI than by heart rhythm; (ii) there are no differences in Gal-3 trans-cardiac and trans-pulmonary levels; (iii) Gal-3 was not associated with early and late rhythm outcomes after AF catheter ablation.