{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T05:17:04Z","timestamp":1789017424915,"version":"build-2803163510"},"reference-count":46,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2022,3,17]],"date-time":"2022-03-17T00:00:00Z","timestamp":1647475200000},"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":["Br J Haematol"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>The glycoprotein CD47 regulates antiphagocytic activity via signal regulatory protein alpha (SIRPa). This study investigated CD47 expression on Hodgkin and Reed\u2013Sternberg (HRS) cells in the classical Hodgkin lymphoma (cHL) tumour microenvironment and its correlation with prognosis, programmed\u2010death (PD) immune markers, and SIRPa<jats:sup>+<\/jats:sup> leukocytes. We conducted immunohistochemistry with CD47 and SIRPa antibodies on diagnostic biopsies (tissue microarrays) from cHL patients from two cohorts (<jats:italic>n<\/jats:italic>\u00a0=\u00a0178). In cohort I (<jats:italic>n<\/jats:italic>\u00a0=\u00a0136) patients with high expression of CD47 on HRS cells (<jats:italic>n<\/jats:italic>\u00a0=\u00a048) had a significantly inferior event\u2010free survival [hazard ratio (HR)\u00a0=\u00a05.57; 95% confidence interval (CI), 2.78\u201311.20; <jats:italic>p\u00a0&lt;\u00a00<\/jats:italic>.001] and overall survival (OS) (HR\u00a0=\u00a08.54; 95% CI, 3.19\u201322.90; <jats:italic>p\u00a0&lt;<\/jats:italic>\u00a00.001) compared with patients with low expression (<jats:italic>n<\/jats:italic>\u00a0=\u00a088). The survival results remained statistically significant in multivariable Cox regression adjusted for known prognostic factors. In cohort II (<jats:italic>n<\/jats:italic>\u00a0=\u00a042) high HRS cell CD47 expression also carried shorter event\u2010free survival (EFS) (HR\u00a0=\u00a05.96; 95% CI, 1.20\u201329.59; <jats:italic>p<\/jats:italic>\u00a0=\u00a00.029) and OS (HR\u00a0=\u00a05.61; 95% CI, 0.58\u201354.15; <jats:italic>p<\/jats:italic>\u00a0=\u00a00.136), although it did not retain statistical significance in the multivariable analysis. Further, high CD47 expression did not correlate with SIRPa<jats:sup>+<\/jats:sup> leukocytes or PD\u20101, PD\u2010L1 and PD\u2010L2 expression. This study provides a deeper understanding of the role of CD47 in cHL during an era of emerging CD47 therapies.<\/jats:p>","DOI":"10.1111\/bjh.18137","type":"journal-article","created":{"date-parts":[[2022,3,18]],"date-time":"2022-03-18T05:34:09Z","timestamp":1647581649000},"page":"580-589","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Checkpoint <scp>CD47<\/scp> expression in classical Hodgkin lymphoma"],"prefix":"10.1111","volume":"197","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3393-1106","authenticated-orcid":false,"given":"Alex Reza","family":"Gholiha","sequence":"first","affiliation":[{"name":"Experimental and Clinical Oncology, Department of Immunology, Genetics and Pathology Uppsala University  Uppsala 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