{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T11:36:17Z","timestamp":1785411377458,"version":"3.56.0"},"reference-count":53,"publisher":"MDPI AG","issue":"12","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\/4.0\/"}],"funder":[{"name":"DAAD Research Grants","award":["57378443"],"award-info":[{"award-number":["57378443"]}]},{"name":"ST-4"},{"name":"Medical University of Gdansk, Poland"},{"id":[{"id":"https:\/\/ror.org\/019sbgd69","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>This study evaluated the association between vitamin D3 levels, transplanted kidney function, and body composition in 315 stable renal transplant recipients (median 7.7 years post-transplant). The biochemical profile included eGFR, PTH, calcium, phosphorus, and 25(OH)D3 levels. Vitamin D status was defined as deficiency (&lt;20 ng\/mL), insufficiency (20\u201330 ng\/mL), or optimal (&gt;30 ng\/mL). Body composition was assessed via bioelectrical impedance analysis, capturing parameters such as BMI, visceral fat area, and phase angle. Multivariable quantile regression models were used to assess the associations between clinical\/metabolic parameters and graft function. Vitamin D3 supplementation was prescribed in 61.5% of patients, with 49.7% receiving active analogues and 50.3% cholecalciferol. Results showed that 25(OH)D3 levels did not correlate with graft function in the total population, and no significant differences in eGFR were observed regarding vitamin D status. In multivariable models, 25(OH)D3 levels correlated significantly only with calcium levels. No significant correlations were observed between vitamin D and transplant vintage, age, eGFR, or any anthropometric and body composition parameters.<\/jats:p>","DOI":"10.3390\/ijms27125384","type":"journal-article","created":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T00:49:01Z","timestamp":1781570941000},"page":"5384","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Vitamin D3 and Body Composition Association with Graft Function in Long-Term Kidney Transplant Recipients"],"prefix":"10.3390","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-7937-3859","authenticated-orcid":false,"given":"Maksymilian","family":"Hryciuk","sequence":"first","affiliation":[{"name":"Department of Nephrology, Medical University of Gda\u0144sk, D\u0119binki 7 Street, 80-211 Gda\u0144sk, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3284-0149","authenticated-orcid":false,"given":"Zbigniew","family":"Heleniak","sequence":"additional","affiliation":[{"name":"Department of Nephrology, Medical University of Gda\u0144sk, D\u0119binki 7 Street, 80-211 Gda\u0144sk, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8773-9649","authenticated-orcid":false,"given":"Sylwia","family":"Ma\u0142gorzewicz","sequence":"additional","affiliation":[{"name":"Department of Nephrology, Medical University of Gda\u0144sk, D\u0119binki 7 Street, 80-211 Gda\u0144sk, Poland"},{"name":"Department of Clinical Nutrition, Medical University of Gda\u0144sk, D\u0119binki 7 Street, 80-211 Gda\u0144sk, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fabian","family":"Halleck","sequence":"additional","affiliation":[{"name":"Medizinische Klinik mit Schwerpunkt Nephrologie und Internistische Intensivmedizin Charit\u00e9, Universit\u00e4tsmedizin Berlin, 10117 Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alicja","family":"D\u0119bska-\u015alizie\u0144","sequence":"additional","affiliation":[{"name":"Department of Nephrology, Medical University of Gda\u0144sk, D\u0119binki 7 Street, 80-211 Gda\u0144sk, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7929-5942","authenticated-orcid":false,"given":"Klemens","family":"Budde","sequence":"additional","affiliation":[{"name":"Medizinische Klinik mit Schwerpunkt Nephrologie und Internistische Intensivmedizin Charit\u00e9, Universit\u00e4tsmedizin Berlin, 10117 Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,6,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1339","DOI":"10.1001\/jama.1993.03510110079036","article-title":"Comparison of survival probabilities for dialysis patients vs. cadaveric renal transplant recipients","volume":"270","author":"Port","year":"1993","journal-title":"JAMA"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1016\/S0272-6386(12)80160-0","article-title":"Comparative mortality risks of chronic dialysis and cadaveric transplantation in black end-stage renal disease patients","volume":"24","author":"Ojo","year":"1994","journal-title":"Am. 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