The paper entitled "Differential effects of the phosphodiesterase inhibition in chronic heart failure depending on the echocardiographic phenotype (HFREF or HFpEF): a meta-analysis" by Renato De Vecchis et al., which was published in Minerva Cardioangiologica 2018 October;66(5):659-70, has been retracted by the Publisher due to plagiarism.