- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT01240213
Vitamin D, Diet and Activity Study (ViDA)
Vitamin D, Weight Loss, and Breast Cancer Biomarkers
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
Objective: To test the incremental effect of vitamin D supplementation (2000 IU/day) in 228 overweight and obese postmenopausal women with low blood vitamin D levels on response to a weight loss (diet + exercise) intervention in a double-blind placebo-controlled clinical trial.
Primary Aim:
• Determine the effects of 12-months vitamin D supplementation vs. placebo on weight loss in women following a weight loss diet and exercise program.
Secondary Aims:
- Determine the effects of 12-months vitamin D vs. placebo on blood biomarkers associated with increased breast cancer risk (insulin, glucose, CRP).
- Test 12-months vitamin D effects on muscle strength as measured by 1RM leg press and bench press in women undergoing weight loss.
- Test the effect of 12-month vitamin D supplementation on effects on quality of life (QOL) in women undergoing weight loss.
Additional Aims:
- In a 50% subset of women, test the effect of 12-month vitamin D supplementation vs. placebo on breast epithelial cell cytomorphology (quantified by the Masood cytology index) obtained through random periareolar fine needle aspiration (RPFNA).
- Collect subcutaneous abdominal fat aspirations in the 50% subsample of women.
OUTLINE: This is a randomized study. Participants are stratified according to body mass index (< 30 vs ≥ 30) and RPFNA-consent. All participants will receive a 6-month weight loss intervention (prescribed weight loss goal of 10% of initial body weight) followed by 6 months' maintenance therapy.
Baseline, 6-, and 12-month measurements will include weight, BMI, waist and hip circumference, serum 25-hydroxyvitamin D, fasting blood samples, and questionnaires on details of diet especially items containing vitamin D, physical activity levels, sun exposure including clothing and sunscreen habits, dietary supplement and vitamin use, and medications.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
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Washington
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Seattle, Washington, Vereinigte Staaten, 98109
- Fred Hutchinson Cancer Research Center
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- Age 50-75 years
- Postmenopausal (no periods for past 12 months)
- Screening serum vitamin D (25(OH)D) between 10 and 32 ng/mL ("insufficient")
- No menopausal HRT use of any type including vaginal X 6 months and willing to avoid use for study duration
- BMI > 25.0 kg/m2 (> 23.0 for Asians)
- Physically able to undertake a calorie reduction and exercise program
- Able to come for clinic visits, classes, and measurements, fill out questionnaires and logs in English
- Gives informed consent, agrees to be randomly assigned
Exclusion Criteria:
- Currently using more that 400 IU vitamin D from supplemental sources
- Screening vitamin D level < 10 ng/mL (will be referred to primary provider) or > 32 ng/mL (already sufficient)
- Osteoporosis
- Renal disease, history of kidney stones
- Any contra-indications to taking vitamin D 2000 IU/day
- Plans to leave the study area within the follow-up period
- Plans to join another organized weight loss program or take appetite suppressant medication during the study period
- History of bariatric surgery
- Current use of medications likely to interfere with adherence to interventions or study outcomes
- Current smoker
- Personal history of invasive or in situ breast cancer
- Personal history of invasive cancer other than breast: except for non- melanoma skin cancer which would be eligible
- Diabetes mellitus
- Abnormalities on screening physical that contraindicate participation
- Severe congestive heart failure per NYHA criteria 3 & 4
- Contraindications for entry into a research exercise program: recent (within 6 months) myocardial infarction, pulmonary edema, myocarditis, pericarditis, unstable angina, pulmonary embolism, deep vein thrombosis, uncontrolled hypertension (systolic > 200, diastolic > 100), orthostatic hypotension, moderate/severe aortic stenosis, uncontrolled arrythmia, uncontrolled congestive heart failure, left bundle branch block, history of cardiac arrest or stroke
- Alcohol or drug abuse, significant mental illness (as assessed by study staff impression)
- For the RPFNA/adipose tissue substudy: bilateral breast cancer, bilateral mastectomy, unable or unwilling to stop aspirin or NSAIDs for 1 week before and after the procedure, allergy to anesthetics or local anesthetics.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Verdreifachen
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
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Placebo-Komparator: Placebo
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1 Placebo per day
Andere Namen:
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Aktiver Komparator: Vitamin D
2000 IU per day of Vitamin D
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2000 IU per day of Vitamin D
Andere Namen:
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Zeitfenster |
|---|---|
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Compare the effects of a 1-year one year Vitamin D supplementation vs placebo, on weight loss in postmenopausal women following a weight loss diet and exercise program.
Zeitfenster: One Year
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One Year
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Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Determine the effects of 12-months vitamin D vs. placebo on blood biomarkers (insulin,glucose,CRP) associated with increased breast cancer risk.
Zeitfenster: One Year
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One Year
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Test 12-months vitamin D effects on muscle strength as measured by 1RM leg press and bench press in women undergoing weight loss.
Zeitfenster: One Year
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One Year
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Test the effect of 12-month vitamin D supplementation on effects on quality of life (QOL) in women undergoing weight loss.
Zeitfenster: One Year
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One Year
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Effect of Vitamin D supplementation on breast epithelial cell cytomorphology
Zeitfenster: One Year
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In a 50% subset of women, test the effect of 12-month vitamin D supplementation vs. placebo on breast epithelial cell cytomorphology (quantified by the Masood cytology index) obtained through random periareolar fine needle aspiration (RPFNA).
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One Year
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Effect of Vitamin D on epithelial cell gene expression
Zeitfenster: One year
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In a 50% subset of women, test the effect of 12-month vitamin D supplementation vs. placebo on breast epithelial cell gene expression as measured by qRT-PCR.
The breast epithelial cells are collected by RPFNA
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One year
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Mitarbeiter und Ermittler
Sponsor
Ermittler
- Hauptermittler: Anne McTiernan, MD, PhD, Fred Hutchinson Cancer Center
Publikationen und hilfreiche Links
Allgemeine Veröffentlichungen
- Mason C, de Dieu Tapsoba J, Duggan C, Wang CY, Korde L, McTiernan A. Repletion of vitamin D associated with deterioration of sleep quality among postmenopausal women. Prev Med. 2016 Dec;93:166-170. doi: 10.1016/j.ypmed.2016.09.035. Epub 2016 Sep 28.
- Mason C, Tapsoba JD, Duggan C, Imayama I, Wang CY, Korde L, McTiernan A. Effects of Vitamin D3 Supplementation on Lean Mass, Muscle Strength, and Bone Mineral Density During Weight Loss: A Double-Blind Randomized Controlled Trial. J Am Geriatr Soc. 2016 Apr;64(4):769-78. doi: 10.1111/jgs.14049. Epub 2016 Apr 5.
- Duggan C, de Dieu Tapsoba J, Mason C, Imayama I, Korde L, Wang CY, McTiernan A. Effect of Vitamin D3 Supplementation in Combination with Weight Loss on Inflammatory Biomarkers in Postmenopausal Women: A Randomized Controlled Trial. Cancer Prev Res (Phila). 2015 Jul;8(7):628-35. doi: 10.1158/1940-6207.CAPR-14-0449. Epub 2015 Apr 23.
- Mason C, Xiao L, Imayama I, Duggan C, Wang CY, Korde L, McTiernan A. Vitamin D3 supplementation during weight loss: a double-blind randomized controlled trial. Am J Clin Nutr. 2014 May;99(5):1015-25. doi: 10.3945/ajcn.113.073734. Epub 2014 Mar 12. Erratum In: Am J Clin Nutr. 2014 Oct;100(4):1213.
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Stoffwechselerkrankungen
- Hautkrankheiten
- Neubildungen
- Neubildungen nach Standort
- Brusterkrankungen
- Ernährungsstörungen
- Erkrankungen des Bewegungsapparates
- Mangelkrankheiten
- Unterernährung
- Knochenerkrankungen
- Knochenerkrankungen, Stoffwechsel
- Störungen des Kalziumstoffwechsels
- Neoplasien der Brust
- Mangel an Vitamin D
- Rachitis
- Avitaminose
- Physiologische Wirkungen von Arzneimitteln
- Mikronährstoffe
- Vitamine
- Mittel zur Erhaltung der Knochendichte
- Vitamin-D
Andere Studien-ID-Nummern
- SAC110024
- IR 7297 (Andere Kennung: FHCRC IRB)
Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .
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