Investigating the effect of vitamin K supplementation on markers of bone turnover and bone density in adolescents and adults with cystic fibrosis

ISRCTN ISRCTN14200211
DOI https://doi.org/10.1186/ISRCTN14200211
Secondary identifying numbers vit K 2006
Submission date
02/04/2008
Registration date
09/05/2008
Last edited
27/04/2016
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Nutritional, Metabolic, Endocrine
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Not provided at time of registration

Contact information

Dr Lieske Kuitert
Scientific

Department of Respiratory Medicine
London Chest Hospital
Bonner Road
London
E2 9JX
United Kingdom

Study information

Study designRandomised double-blind placebo-controlled study
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific titleInvestigating the effect of vitamin K supplementation on markers of bone turnover and bone density in adolescents and adults with cystic fibrosis
Study objectivesVitamin K supplementation improves markers of bone turnover and bone density in adolescents and adults with cystic fibrosis (CF).
Ethics approval(s)Wandsworth Research Ethics Committee, 11/08/2006 (protocol v4), 18/05/2007 (amendments protocol v5) and 03/08/2007 (amendments protocol v6).
Health condition(s) or problem(s) studiedBone health in cystic fibrosis
Intervention1. 10 mg of menadiol phosphate (water soluble form of vitamin K) once daily (o.d.) orally for 12 months
2. Matching placebo for 12 months

Total duration of treatment and follow-up: 12 months for both arms.
Intervention typeSupplement
Primary outcome measureThe between-groups difference in the ratio of undercarboxylated osteocalcin to total osteocalcin, measured prior to supplementation starting and at the end of the 12 months supplementation.
Secondary outcome measuresThe between-group differences in:
1. Total osteocalcin
2. Undercarboxylated osteocalcin
3. N Terminal X (marker of bone resorption)
4. Bone specific alkaline phosphatase
5. Serum vitamin D
6. Calcium
7. Dual energy x-ray absorptiometry (DEXA) scan z and t scores of lumbar spine and femoral neck (scores adjusted for age, height and sex)

Measured prior to supplementation starting and at the end of the 12 months supplementation.
Overall study start date02/01/2007
Completion date09/02/2009

Eligibility

Participant type(s)Patient
Age groupAdult
SexBoth
Target number of participants40
Key inclusion criteria1. Patients with a diagnosis of CF (positive sweat test or genotype testing)
2. Patients aged greater than 16 years (post pubertal-stage IV Tanner), either sex
3. Patients are pancreatic insufficient (i.e. with a positive faecal elastase test, and requiring pancreatic enzyme supplementation)
4. No evidence of overt liver disease (not on ursodeoxycholic acid)
Key exclusion criteria1. Patients already taking vitamin K supplementation
2. Patients with osteoporosis or osteopaenia and taking bisphosphonates
3. Patients with abnormally low vitamin D levels (less than 30 µg)
4. Patients on maintenance oral corticosteroids
5. Patients who are considered to have very sedentary lifestyle or follow a rigorous exercise training programme
6. Patients with overt liver disease
7. Patients who do not consent to participate
8. Patients with a life expectancy of less than 12 months
9. Patients who are non-compliant with maintenance therapies
Date of first enrolment02/01/2007
Date of final enrolment09/02/2009

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

Department of Respiratory Medicine
London
E2 9JX
United Kingdom

Sponsor information

Barts and the London NHS Trust (UK)
Hospital/treatment centre

Research and Development Department
24 - 26 Walden Street
Whitechapel
London
E1 2AN
England
United Kingdom

Website http://www.bartsandthelondon.org.uk/
ROR logo "ROR" https://ror.org/00b31g692

Funders

Funder type

Government

Barts and the London NHS Trust (UK) - Internally funded from Nursing, Midwifering and Allied Health Profession research grant

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan

Editorial Notes

27/04/2016: No publications found, verifying study status with principal investigator