{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T06:24:10Z","timestamp":1793255050497,"version":"4.5.0"},"reference-count":58,"publisher":"Oxford University Press (OUP)","issue":"7","license":[{"start":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T00:00:00Z","timestamp":1781481600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,7,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Hyperparathyroidism (HPT) is common in chronic kidney disease and may persist after kidney transplantation, but its prognostic significance remains uncertain because of heterogeneous definitions and variable timing of assessment.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We performed a systematic review and meta-analysis of observational studies in adult kidney transplant recipients (KTRs) in accordance with PRISMA 2020 (PROSPERO CRD420261293712). PubMed\/MEDLINE and Embase were searched from inception to 9 February 2026. Exposures included pre- and post-transplant parathyroid hormone (PTH)\/Persistent HPT assessed as categorical or continuous variables. Outcomes were all-cause mortality, overall graft failure, and death-censored graft failure. Random-effects models were applied, with Hartung\u2013Knapp sensitivity analyses; risk of bias was assessed using QUIPS.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>23 studies were included in the systematic review, and 19 studies (26\u2009266 KTRs) contributed to the meta-analyses (3 pre-transplant studies N = 12\u2009819; 16 post-transplant studies N = 13\u2009447). Pre-transplant HPT was not associated with all-cause mortality (HR 0.80) and showed an association with death-censored graft failure (DCGF) in the main analysis (HR 1.42) that lost statistical significance with Hartung\u2013Knapp adjustment. By contrast, categorical Persistent HPT was associated with higher risks of all-cause mortality (HR 1.74), overall graft failure (HR 2.16), and DCGF (HR 1.92), with consistent Hartung\u2013Knapp results. Phenotype-stratified analyses showed a gradient of graft failure risk from normocalcemic HPT (HR 1.66) to hypercalcemic HPT (HR 2.67), with minimal heterogeneity. Continuous PTH analyses showed substantial heterogeneity and were not robust in sensitivity analyses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Post-transplant Persistent HPT is a consistent risk marker for mortality and adverse graft outcomes, whereas the prognostic significance of pre-transplant HPT remains to be clarified. Standardized definitions and prospective studies are needed to clarify causality and treatment effects.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/ckj\/sfag205","type":"journal-article","created":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T22:58:37Z","timestamp":1781564317000},"source":"Crossref","is-referenced-by-count":2,"title":["Pre-transplant and persistent post-transplant hyperparathyroidism and kidney transplant outcomes: a systematic review and meta-analysis"],"prefix":"10.1093","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6263-6202","authenticated-orcid":false,"given":"Daniele","family":"Vetrano","sequence":"first","affiliation":[{"name":"Department of Medical and Surgical Science (DIMEC), Alma Mater Studiorum\u2014University of Bologna , Bologna ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simona","family":"Barbuto","sequence":"additional","affiliation":[{"name":"Nephrology, Dialysis and Kidney Transplant Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna , Bologna ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francesco","family":"Aguanno","sequence":"additional","affiliation":[{"name":"Department of Medical and Surgical Science (DIMEC), Alma Mater Studiorum\u2014University of Bologna , Bologna ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paolo","family":"Mastromauro","sequence":"additional","affiliation":[{"name":"Department of Medical and Surgical Science (DIMEC), Alma Mater Studiorum\u2014University of Bologna , Bologna ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Valeria","family":"Grandinetti","sequence":"additional","affiliation":[{"name":"Nephrology, Dialysis and Kidney Transplant Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna , Bologna ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giorgia","family":"Comai","sequence":"additional","affiliation":[{"name":"Department of Medical and Surgical Science (DIMEC), Alma Mater Studiorum\u2014University of Bologna , Bologna ,","place":["Italy"]},{"name":"Nephrology, Dialysis and Kidney Transplant Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna , Bologna ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5473-8551","authenticated-orcid":false,"given":"Gaetano","family":"La\u00a0Manna","sequence":"additional","affiliation":[{"name":"Department of Medical and Surgical Science (DIMEC), Alma Mater Studiorum\u2014University of Bologna , Bologna ,","place":["Italy"]},{"name":"Nephrology, Dialysis and Kidney Transplant Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna , Bologna 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