Mass-period diagram including the detected exoplanets from NASA exoplanets archive with published masses and orbital periods orbiting around M-type stars. The sub-spectral type of the parent star is indicated with a unique symbol and color. GJ 740 b has been represented with an unfilled black square, and the HADES detections (GJ 3998 b and GJ 3998 c, Affer et al. 2016; GJ 625 b, Suárez Mascareño et al. 2017: GJ 3942 b, Perger et al. 2017a; Gl 15 A b and Gl 15 A c, Pinamonti et al. 2018; Gl 686 b, Affer et al. 2019; Gl 49 b, Perger et al. 2019; and GJ 685 b, Pinamonti et al. 2019) have been marked with pink unfilled dots. The four horizontal dashed lines indicate the mass of Jupiter, Saturn, Neptune, and the Earth as a reference. The top and right panels contain the mass and orbital period distribution of the sample.