In order to evaluate the potential cis-regulatory role of SLC-AS6 and SLC-AS7 in varicocele-related male infertility, we examined the correlation between expression levels of SLC-AS6-7 and neighboring sense transcript, SLC7A11, that showed a significant negative correlation in spermatozoa samples (Figure 6B). The gene discussed is SLC7A11; the disease is male infertility.