Figure 1: NGS analysis. (a) Screenshot from Integrative Genomics Viewer (IGV) for SOX13. Three control samples and three Klinefelter samples among the ten samples are displayed. (b) Istograms showing the expression (FPKM) in the twenty sequenced samples. The control samples are shown in red, whereas the Klinefelter samples are shown in blue. (c) Boxplot showing the SOX13 expression (FPKM) in control samples (in red) and Klinefelter samples (in blue). SOX13 expression is lower in Klinefelter samples. *P < 0.05. NGS: next-generation sequencing; FPKM: fragments per kilobase of transcript per million; SOX13: sex-determining region of Y-box 13.