{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:33:43Z","timestamp":1760146423934,"version":"build-2065373602"},"reference-count":38,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2024,11,5]],"date-time":"2024-11-05T00:00:00Z","timestamp":1730764800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Faes Farma S.A. Leioa, Spain","award":["HIDR-0320\/DR"],"award-info":[{"award-number":["HIDR-0320\/DR"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Background\/Objective: Optimal vitamin D levels are required for bone health and proper functionality of the nervous, musculoskeletal and immune systems. The objective of this study was to assess the efficacy and safety profiles of new weekly calcifediol formulations with the potential to improve adherence and outcome. Methods: A Phase II-III, double-blind, randomized, multicentre trial (EudraCT 2020-001099-14 and NCT04735926). Subjects were randomized 2:2:1 to calcifediol 75 \u00b5g, 100 \u00b5g and placebo. 25(OH)D levels were measured at 4, 16, 24, 32 and 52 weeks. The main outcome was the percentage of subjects who achieved a response defined as 25(OH)D levels \u226520 ng\/mL and\/or \u226530 ng\/mL at week 16. Results: 398 subjects (51.1 \u00b1 15.96 years, 74.2% females, 98.7% Caucasian) with plasma 25(OH)D levels between 10 and 20 ng\/mL were randomized. A total of 376 subjects completed 16 weeks of treatment, and 355 subjects completed the study. Six patients withdrew due to an adverse event, all unrelated to treatment. At week 16, 93.6% and 74.4% of subjects receiving calcifediol 75 \u00b5g achieved response levels of \u226520 ng\/mL and \u226530 ng\/mL, respectively. The calcifediol 100 \u00b5g group showed 98.7% and 89.9% of responders for \u226520 ng\/mL and \u226530 ng\/mL, respectively. Both calcifediol groups showed superiority over placebo at each response level at all time points analyzed (p &lt; 0.0001). Calcifediol treatments increased 25(OH)D levels from baseline to week 24 and remained stable thereafter. The frequency of treatment-emergent adverse events was balanced between groups. Conclusions: New weekly calcifediol 75 and 100 \u00b5g formulations showed an effective and sustained response with a good long-term safety profile.<\/jats:p>","DOI":"10.3390\/nu16223796","type":"journal-article","created":{"date-parts":[[2024,11,5]],"date-time":"2024-11-05T11:36:39Z","timestamp":1730806599000},"page":"3796","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Efficacy and Safety of Weekly Calcifediol Formulations (75 and 100 \u00b5g) in Subjects with Vitamin D Deficiency: A Phase II\/III Randomised Trial"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1234-8560","authenticated-orcid":false,"given":"Esteban","family":"J\u00f3dar-Gimeno","sequence":"first","affiliation":[{"name":"Department of Endocrinology and Nutrition, Quir\u00f3nsalud Madrid University Hospital, 28223 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1723-217X","authenticated-orcid":false,"given":"Jose Luis","family":"P\u00e9rez-Castrill\u00f3n","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, R\u00edo Hortega University Hospital, 47012 Valladolid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J\u00e1n","family":"Nociar","sequence":"additional","affiliation":[{"name":"Department of Cardiology, General Hospital with Polyclinic Lu\u010denec n.o., 984 01 Lu\u010denec, Slovakia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-3206-7834","authenticated-orcid":false,"given":"Michal","family":"Lojka","sequence":"additional","affiliation":[{"name":"Ordinace MediFem, s.r.o., 415 01 Teplice, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dimitar","family":"Nikolov","sequence":"additional","affiliation":[{"name":"Medical Center-1-Sevlievo EOOD, 5400 Sevlievo, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando","family":"Cereto-Castro","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, Hospital Quir\u00f3n Barcelona, 08023 Barcelona, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sne\u017eana","family":"Novkovi\u0107","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, Institute of Rheumatology, 11000 Belgrade, Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0330-2189","authenticated-orcid":false,"given":"Umberto","family":"Tarantino","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics and Traumatology, Policlinico Tor Vergata Foundation, 00133 Rome, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nadia","family":"Mehsen-Cetre","sequence":"additional","affiliation":[{"name":"Rheumatology Department, CHU Pellegrin, 33076 Bordeaux, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paula","family":"Arranz","sequence":"additional","affiliation":[{"name":"Clinical Research Department, FAES FARMA, 48940 Leioa, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cristina Mart\u00ednez","family":"Ostal\u00e9","sequence":"additional","affiliation":[{"name":"Clinical Research Department, FAES FARMA, 48940 Leioa, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aintzane","family":"Garc\u00eda-Bea","sequence":"additional","affiliation":[{"name":"Medical Affairs Department, FAES FARMA, 48940 Leioa, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Inmaculada","family":"Gilaberte","sequence":"additional","affiliation":[{"name":"Clinical Research Department, FAES FARMA, 48940 Leioa, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,11,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Cui, A., Zhang, T., Xiao, P., Fan, Z., Wang, H., and Zhuang, Y. 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