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Brain structure reflects damage and neuroplasticity and is one of the biological bases of symptomatology. Subtyping PD in the framework of brain structure helps in the prediction of disease trajectories and optimizes treatment strategies.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      The study included a total of 283\n                      <jats:italic>de novo<\/jats:italic>\n                      PD and 141 healthy controls (HC). Structural heterogeneity between PD and HC was compared, and patients were classified using Heterogeneity through Discriminative Analysis. Gray matter volume (GMV), clinical symptoms, and substantia nigra free water (SNFW) among all subtypes were compared. These subtypes were followed for an average of 2.5\u2009years to monitor motor impairment.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Early PD patients possessed higher GMV heterogeneity than HC, and two subtypes based on GMV patterns were identified. Subtype 1 showed widespread GMV reductions, while subtype 2 had an increased volume in the basal ganglia and parts of the cortex. Subtype 1 had more severe motor and non\u2010motor symptoms, as well as higher posterior SNFW. The whole\u2010brain GMV in the PD group was negatively correlated with posterior SNFW; basal ganglia volume in subtype 1 was negatively correlated with Unified Parkinson's Disease Rating Scale (UPDRS)\u2010III scores, whereas no linear correlation was found in subtype 2. The UPDRS\u2010III progression rate was higher in subtype 1 than in subtype 2 (2.52 vs 0.92 points\/year).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The heterogeneity of PD patients reflected the changes in their brain structure. The identification of these changes helps the classification of patients into different subtypes, additionally supported by clinical manifestations and SNFW, with consequent benefits for clinical consultancy and precision medicine.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/cns.70277","type":"journal-article","created":{"date-parts":[[2025,2,15]],"date-time":"2025-02-15T03:19:06Z","timestamp":1739589546000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Analysis of Two Neuroanatomical Subtypes of Parkinson's Disease and Their Motor Progression Based on Semi\u2010Supervised Machine Learning"],"prefix":"10.1111","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1664-7111","authenticated-orcid":false,"given":"Hao","family":"Zhou","sequence":"first","affiliation":[{"name":"Department of Neurology The Affiliated Brain Hospital of Nanjing Medical University  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuqing","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Neurology The Affiliated Brain Hospital of Nanjing Medical University  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuoying","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Neurology The Affiliated Brain Hospital of Nanjing Medical University  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-1749-701X","authenticated-orcid":false,"given":"Yi","family":"Xing","sequence":"additional","affiliation":[{"name":"Department of Neurology The Affiliated Brain Hospital of Nanjing Medical University  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9186-6621","authenticated-orcid":false,"given":"Jingru","family":"Ren","sequence":"additional","affiliation":[{"name":"Department of Neurology The Affiliated Brain Hospital of Nanjing Medical University  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5916-9837","authenticated-orcid":false,"given":"Weiguo","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Neurology The Affiliated Brain Hospital of Nanjing Medical University  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,2,15]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(21)00218-X"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1474-4422(23)00404-0"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/mds.29708"},{"issue":"10","key":"e_1_2_9_5_1","first-page":"1529","article-title":"Variable Expression of Parkinson's Disease: A Base\u2010Line Analysis of the DATATOP Cohort","volume":"40","author":"Jankovic J.","year":"1990","journal-title":"Parkinson Study Group. 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