CCND2 and obstructive sleep apnea syndrome: LncRNA STRBP may compete with miRNA (hsa-miR-1297, hsa-miR-17-5p, hsa-miR-20b-5p, hsa-miR-125b-5p, hsa-miR-301b-3p and hsa-miR-212-3p) for binding, thereby regulating the target genes of CCND2, WT1, E2F2 and IRF1, affecting the occurrence and development of OSA.