{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,30]],"date-time":"2025-08-30T16:51:09Z","timestamp":1756572669313,"version":"3.41.2"},"reference-count":50,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2022,5,30]],"date-time":"2022-05-30T00:00:00Z","timestamp":1653868800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003453","name":"Natural Science Foundation of Guangdong Province","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003453","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Endocrinol."],"abstract":"<jats:p>We collected 61 craniopharyngioma (CP) specimens to investigate the expression of TrkA, \u03b2-catenin, BRAF gene mutation, and NTRK1 fusion in CP. There were 37 male and 24 female individuals with a median age of 34 years (range, 4\u201375 years). Histologically, there were 46 cases of adamantinomatous craniopharyngioma (ACP), 14 cases of papillary craniopharyngioma (PCP), and 1 case with a mixed adamantinomatous and papillary pattern. By immunohistochemistry, we found that moderate\/high TrkA expression was detected in 47% (28\/60) CP and was significantly higher in adult patients (p = 0.018). Interestingly, TrkA is more expressed in \u201cwhorled epithelium\u201d cells in ACP, similar to the localization of abnormal \u03b2-catenin. The abnormal expression rate of \u03b2-catenin was 70% (43\/61), and the medium\/high cyclin D1 expression rate was 73% (44\/60), both of which were significantly higher in ACP than in PCP. Of the CP, 41% (21\/51) had a moderate\/strong P16-positive signal; 58% (34\/59) showed a high Ki-67 expression, and there was a significant correlation between high Ki-67 L.I. and high tumor recurrence (p = 0.021). NTRK1 fusion was not found in CP by fluorescence <jats:italic>in situ<\/jats:italic> hybridization (FISH). By PCR, 26% (15\/58) CP showed BRAF V600E gene mutation, which mainly occurred in PCP (100%, 14\/14) except one case of mixed CP. Moreover, TrkA expression was negatively correlated with Ki-67 index and positively correlated with P16 expression. There was a significantly negative correlation between BRAF V600E mutation and abnormal \u03b2-catenin expression. Our results demonstrate for the first time that TrkA expression might occur in CP, especially in adult CP patients, and suggest that cyclin D1 could be used for ACP histological classification in addition to \u03b2-catenin and BRAF V600E mutation, while Ki-67 could be used as a marker to predict CP recurrence.<\/jats:p>","DOI":"10.3389\/fendo.2022.859381","type":"journal-article","created":{"date-parts":[[2022,5,30]],"date-time":"2022-05-30T13:44:36Z","timestamp":1653918276000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":5,"title":["Pathological and Prognostic Characterization of Craniopharyngioma Based on the Expression of TrkA, \u03b2-Catenin, Cell Cycle Markers, and BRAF V600E 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