In 2008, Zuccarello et al[5] reported that heterozygous mutations in DNAH5, DNAH11, and other genes lead to the occurrence of idiopathic asthenozoospermia, but all patients did not show clinical symptoms of PCD, speculating that asthenozoospermia may be PCD syndrome another mild phenotype. This evidence concerns the gene DNAH5 and primary ciliary dyskinesia.