{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T09:58:34Z","timestamp":1753869514095,"version":"3.41.2"},"reference-count":39,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T00:00:00Z","timestamp":1737331200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["JOR Spine"],"published-print":{"date-parts":[[2025,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Previous studies have noted an association between diffuse idiopathic skeletal hyperostosis (DISH) and spinal stenosis (SS), although causation is unclear. This study used Mendelian randomization (MR) to investigate the causal relationship between the two.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We utilized large GWAS datasets on DISH and SS to perform a two\u2010sample, bidirectional MR analysis, also quantifying the mediating role of intervertebral disc degeneration (IDD). The inverse variance weighting (IVW) method was the primary approach used to estimate the causal effect size. To ensure the reliability of MR results, we conducted heterogeneity tests, horizontal pleiotropy tests, and the MR\u2010PRESSO test.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The random\u2010effects IVW method indicated that genetically predicted DISH was associated with an increased risk of SS (OR: 1.432; 95% CI: 1.097\u20131.868; <jats:italic>p<\/jats:italic>\u2009=\u20090.008), and this association remained significant in the validation dataset (OR: 1.444; 95% CI: 1.208\u20131.725; <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). Mediation analysis in homogeneous populations showed that IDD partially mediates the causal effect of DISH on SS, with a mediation ratio of 38.39% (95% CI: 2.66\u201374.13). Sensitivity analyses supported our conclusions.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This study provides causal evidence that genetically determined DISH is associated with an increased risk of SS, with IDD acting as a partial mediator. These findings underscore the importance of spine\u2010protective behaviors and early IDD prevention strategies in patients with DISH to mitigate SS risk.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jsp2.70041","type":"journal-article","created":{"date-parts":[[2025,1,21]],"date-time":"2025-01-21T04:16:23Z","timestamp":1737432983000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Intervertebral Disc Degeneration Mediates the Causal Effect of Genetically Predicted Diffuse Idiopathic Skeletal Hyperostosis on Spinal Stenosis: Evidence From a Mendelian Randomization Study"],"prefix":"10.1002","volume":"8","author":[{"given":"Yanzhu","family":"Shen","sequence":"first","affiliation":[{"name":"China\u2010Japan Friendship Hospital (Institute of Clinical Medical Sciences) Chinese Academy of Medical Sciences &amp; Peking Union Medical College  Beijing China"},{"name":"Department of Orthopaedics China\u2010Japan Friendship Hospital  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yankun","family":"Jiang","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics China\u2010Japan Friendship Hospital  Beijing China"},{"name":"Department of Orthopaedic Surgery Peking University China\u2010Japan Friendship School of Clinical Medicine  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ruichen","family":"Jiang","sequence":"additional","affiliation":[{"name":"Department of Clinical Medicine Beijing University of Chinese Medicine  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanjun","family":"Huang","sequence":"additional","affiliation":[{"name":"China\u2010Japan Friendship Hospital (Institute of Clinical Medical Sciences) Chinese Academy of Medical Sciences &amp; Peking Union Medical College  Beijing China"},{"name":"Department of Orthopaedics China\u2010Japan Friendship Hospital  Beijing 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