Therefore, the aim of the present study was (i) to compare the expression of RECK mRNA in samples from normal endometrium and endometriotic ovarian cysts, (ii) to examine the expression of miRNAs putatively involved in RECK mRNA regulation and their possible correlation, and (iii) to determine whether the investigated miRNAs regulate RECK mRNA expression in cell lines originating from the endometrium. This evidence concerns the gene RECK and Ovarian cyst.