LGALS3 and heart failure: Starting from extensive research that asserted Gal-3 as a marker of ventricular maladaptation and its utility in the follow-up of patients with a diagnosis of heart failure of different etiologies, this review will try to highlight the potential utility of this pro-fibrotic marker in predicting the early onset of heart failure signs and post-operatory complications of corrective surgery in patients with congenital heart disease (CHD).