Since lncRNAs have multiple isoforms that differentially express in various cells/tissues (Zhang et al., 2014; Chowdhury et al., 2017), in the present study, we evaluated the expression levels of several isoforms of SLC7A11-AS1 to identify which isoforms are involved in varicocele-related male infertility. The gene discussed is SLC7A11; the disease is varicocele.