NCT05802433 is a NA clinical trial of Vitamin D3 supplement in Vitamin D Deficiency, sponsored by St. Mary's University, Twickenham.

Who is sponsoring NCT05802433?

NCT05802433 is sponsored by St. Mary's University, Twickenham.

What drugs are being tested in NCT05802433?

Interventions in NCT05802433: Vitamin D3 supplement.

What condition does NCT05802433 study?

NCT05802433 studies Vitamin D Deficiency.

Is NCT05802433 still recruiting?

NCT05802433 is currently status unknown. Last updated 6 April 2023.

Last reviewed 2023-04-06 · How we verify

NCT05802433

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

The Genetic Effects on Vitamin D Supplementation

Status unknown NA Last updated 6 April 2023

What this trial tests

NA trial testing Vitamin D3 supplement in Vitamin D Deficiency in 67 participants. Status unknown.

Timeline

16 May 2022

Primary endpoint
25 August 2023

5 October 2023

Quick facts

Lead sponsor	St. Mary's University, Twickenham
Phase	NA
Status	Status unknown
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	single
Primary purpose	basic science
Enrollment	67
Start date	16 May 2022
Primary completion	25 August 2023
Estimated completion	5 October 2023
Sites	1 location across United Kingdom

Drugs / interventions tested

Vitamin D3 supplement

Conditions studied

Vitamin D Deficiency — all drugs for Vitamin D Deficiency →

Sponsor

St. Mary's University, Twickenham

Who can join

Adults 18 to 65, any sex, with Vitamin D Deficiency. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Vitamin D is essential for skeletal growth and bone health, deficiency causes rickets and osteomalacia. In the UK 29% of adults have vitamin D deficiency. It is recommended all adults take 10µg vitamin D supplement daily. Genetic variations could alter vitamin D status by affecting vitamin D metabolism. Systematic reviews found variations in VDR, GC and CYP2R1 genes are associated with vitamin D deficiency. This study aims to assess the effects between vitamin D supplementation and variations in VDR, GC and CYP2R1 genes on vitamin D status.

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

Nuclear receptors in health and disease: signaling pathways, biological functions and pharmaceutical interventions.
Jin P, Duan X, Huang Z, Dong Y, et al · · 2025 · cited 21× · PMID 40717128 · DOI 10.1038/s41392-025-02270-3

Verify or expand the search:

Other recruiting trials for Vitamin D Deficiency

Currently open trials in the same condition.

NCT07317830 — Effects of Different Vitamin D3 Formulations in Vitamin D-Deficient Adults · NA · recruiting
NCT07366970 — Is There a Benefit From Addition of Exercise in Diabetic Patients With ED Who Complain Low Vitamin D? · NA · recruiting
NCT07481240 — A Household-Based Dietary Intervention Study of Vitamin D Fortified Bread in Irish Families · NA · recruiting
NCT07006714 — Preoperative Correction of Vitamin D Deficiency in Total Joint Arthroplasty (TJA) · Phase 4 · active not recruiting
NCT07200011 — Effect of Vitamin D on the Clinical and Radiographic of Unsplinted Mandibular Implant Overdentures · active not recruiting

Other St. Mary's University, Twickenham trials

Trials by the same sponsor.

NCT07475676 — Effects of Short-term Acute Creatine Supplementation on Power, Speed and Muscular Strengths in Young Football Players · NA · not yet recruiting
NCT07439601 — Long-Term Omega-3 and Omega-3 Index >8%: Effects on Physiological Recovery · NA · not yet recruiting
NCT07207096 — Observational Case Series of Patients With Parkinson's Disease (PD) Attending a Complementary Medicine Neuro-degenerativ · recruiting
NCT07129200 — The Effects of Caffeine on Exercise Physiology and Time-trial Performance in a Hot Environment · NA · not yet recruiting
NCT06935214 — The Repeatability of the Effect of Caffeine Supplementation on Submaximal Physiological Responses and Cycling Time Trial · NA · not yet recruiting

Verify against primary sources

ClinicalTrials.gov — authoritative US registry record
WHO ICTRP — international registry index
EU Clinical Trials Register
Sponsor press releases (Google)

Data sources for this page

Trial protocol + status: ClinicalTrials.gov NCT05802433 (US National Library of Medicine, public domain)
Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by St. Mary's University, Twickenham
Last refreshed: 6 April 2023

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT05802433.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing