ClinicalTrials.gg
CompletedNCT03417947Updated Mar 23, 2020

Vitamin D Supplementation in Children With Sickle Cell Disease

A Phase 3 interventional study of Vitamin D bolus and Placebo in Sickle Cell Disease, sponsored by St. Justine's Hospital. Completed at 1 site in Canada. Open to participants aged 5 Years to 17 Years. Per ClinicalTrials.gov, last updated 2020-03-23.

Sponsored by St. Justine's Hospital · Phase 3, Interventional, and Other

Phase
Phase 3
Study type
Interventional
Enrollment
42
Allocation
Randomized
Ages
5 Years to 17 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 55 studies in Anemia, Sickle Cell with a site in Canada — 15 open to participants now, 22 under way, 7 of them phase 3. Anemia, Sickle Cell · Canada.

Enrollment
38th of 49
42 · median 81
Started
2018
with 6 others
Phase 3
14 of 55
3 open now
Registered
24th of 55
by date

Among the 55 studies in Anemia, Sickle Cell with a site in Canada, this one is the 38th largest by enrollment of the 49 interventional ones that give a count, is one of 7 that started in 2018, is one of 14 in phase 3, and was the 24th registered.

Anemia, Sickle Cell

1,134 studies on the registry are indexed under Anemia, Sickle Cell; 238 are open to participants now.

Browse Anemia, Sickle Cell studies →

Open to participants now

15 of the 55 studies in Anemia, Sickle Cell with a site in Canada are open now. Recruiting first, the newest first:

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All 15 open studies →

A study can be open while its sites in Canada have not opened yet or have stopped. Only those recruiting at a site in Canada →

Who these studies take

Of the 177 Anemia, Sickle Cell studies recruiting now, 64 (36%) set no upper age limit and 97 (55%) stop at 75 or younger; 127 take children under 18; 29 take healthy volunteers.

This study: 5 Years to 17 Years · all sexes · no healthy volunteers.

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02

Study summary

Sickle cell disease (SCD) is a genetic disease characterized by abnormal hemoglobin, the main constituent of red blood cells. People with SCD have nutritional deficiencies, and vitamin D deficiency is one of the most common. Symptoms of vitamin D deficiency are similar to those of SCD and include chronic pain and bone complications. Correcting vitamin D nutrition of children with SCD represents a treatment that will improve their health. A single oral high-dose of vitamin D3 will be given to SCD children during one of their follow-up visits at the SCD clinic of CHU Sainte-Justine, Montreal, Canada. This mode of administration was chosen to ensure a better adherence to the treatment. The investigators will determine whether this dose is safe and its administration feasible in clinic. The impact of this dose on blood vitamin D and calcium, urinary calcium, growth, inflammation, bone health, pain and quality of life will also be assessed. This study intends to propose a new intervention to improve the nutrition of children with this disease.

Read the detailed description

Vitamin D deficiency is one of the most common nutritional conditions among patients with sickle cell disease (SCD). Since vitamin D deficiency and SCD share common manifestations including chronic pain, poor bone health and chronic systemic inflammation, it is reasonable to postulate that vitamin D deficiency may contribute to these complications. Thus, optimizing vitamin D nutrition represents an inexpensive strategy that may improve vitamin D status and health outcomes in SCD children. The working hypothesis is that administration of a single oral bolus of 300,000 IU of vitamin D3 to SCD children will result in the attainment of vitamin D sufficiency (25OHD levels >75 nmol/L) in 80% of participants after 3 months. The primary objectives are to assess feasibility, acceptability, and safety of the vitamin D3 bolus while secondary objectives are related to the mean change in serum 25OHD from baseline to 3 months post-bolus and its clinical impact. Seventy-two SCD children (5-17 years, SS and SC genotypes) will be randomized to one bolus of 300,000 IU of vitamin D3 or identical placebo. Blood will be collected at baseline and 3-month post-bolus to measure serum 25OHD and calculate the change from baseline at 3 months (efficacy outcomes). Other outcomes include urinary calcium/creatinine ratio and serum calcium (safety), questionnaires (acceptability and musculoskeletal pain) and parameters related to growth, haematology, inflammation and bone health (exploratory outcomes).

03

Conditions studied

  • Sickle Cell Disease

Browse trials for

Keywords

  • Bolus supplementation
  • Pilot randomised controlled trial
  • Vitamin D
04

Who can participate

Ages eligible
5 Years to 17 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Children aged between 5 and 17 years old who are followed up at the SCD Clinic, CHU Sainte-Justine, Montreal, Canada.

Exclusion criteria

Exclusion Criteria:

  • Conditions or use of medications known to interfere with calcium or vitamin D absorption or metabolism
  • Known hypercalcemia
  • Conditions characterized by a to vitamin D (e.g. granulomatous disorders)
  • Patients clinically diagnosed with rickets or other conditions requiring vitamin D therapy
  • History or presence of urolithiasis
  • Anticipated difficult follow up
  • Patients already enrolled in other studies
  • Patients who have recently been hospitalized for severe pain crisis or acute sickle complication in the past 2 weeks
  • Patients with unresolved pain issues
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 3
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
42 participants (actual)

Study arms

  • Placebo comparator
    Placebo

    Placebo identical to the vitamin D bolus in taste and appearance. The placebo will be administered once, at the beginning of the study. The oral liquid placebo will be prepared at the Pharmacy in coded syringes and will be administered to the participants by a nurse at the sickle cell disease Clinic.

    Dietary Supplement: Placebo

  • Experimental
    Vitamin D bolus

    The vitamin D bolus is an oral liquid supplement that will be administered once, at the beginning of the study. The oral liquid vitamin D bolus will be prepared at the Pharmacy in coded syringes and will be administered to the participants by a nurse at the sickle cell disease Clinic.The dose of vitamin D3 contained in the bolus is 300 000 IU.

    Dietary Supplement: Vitamin D bolus

Interventions

  • Dietary supplementVitamin D bolus

    One single oral liquid vitamin D3 supplement of 300 000 IU

    Also known as: Cholecalciferol

  • Dietary supplementPlacebo

    Placebo identical in taste and appearance to the vitamin D bolus

06

What researchers measure

Primary outcomes

  1. Mean change in total serum 25-hydroxyvitamin D levels

    Group difference in the mean change in total serum 25OHD from baseline to 3 months.

    Time frame: 3 months

Secondary outcomes

  1. Vitamin D sufficiency

    Difference in the proportion of children with serum 25-hydroxyvitamin D ≥75nmol/L at 3 months

    Time frame: 3 months

Other outcomes

  1. Hypercalciuria

    Number of patients with urinary calcium to creatinine ratio above normal reference range for age

    Time frame: 7 days post-intervention

  2. Hypercalcemia

    Number of patients with serum calcium above normal reference range for age

    Time frame: 3 months

  3. Serum 25-hydroxyvitamin D levels

    Number of patients with serum 25-hydroxyvitamin D levels \>250 nmol/L

    Time frame: 3 months

  4. Mean change in weight

    Group difference in the mean change of weight (kg) from baseline to 3 months.

    Time frame: 3 months

  5. Mean change in height

    Group difference in the mean change of height (kg) from baseline to 3 months.

    Time frame: 3 months

  6. Mean change in hemoglobin

    Group difference in the mean change of circulating hemoglobin from baseline to 3 months.

    Time frame: 3 months

  7. Mean change in fetal hemoglobin

    Group difference in the mean change of circulating fetal hemoglobin from baseline to 3 months.

    Time frame: 3 months

  8. Mean change in leucocyte counts

    Group difference in the mean change of blood leucocyte counts from baseline to 3 months.

    Time frame: 3 months

  9. Mean change in platelet counts

    Group difference in the mean change of blood platelet counts from baseline to 3 months.

    Time frame: 3 months

  10. Mean change in reticulocyte counts

    Group difference in the mean change of blood reticulocyte counts from baseline to 3 months

    Time frame: 3 months

  11. Mean change in neutrophil counts

    Group difference in the mean change of blood neutrophil counts from baseline to 3 months

    Time frame: 3 months

  12. Mean change in mean corpuscular volume

    Group difference in the mean change of blood mean corpuscular volume from baseline to 3 months

    Time frame: 3 months

  13. Mean change in serum creatinine

    Group difference in the mean change of serum creatinine from baseline to 3 months.

    Time frame: 3 months

  14. Mean change in serum bilirubin

    Group difference in mean change of serum bilirubin from baseline to 3 months.

    Time frame: 3 months

  15. Mean change in serum parathyroid hormone

    Group difference in mean change of serum parathyroid hormone from baseline to 3 months

    Time frame: 3 months

  16. Mean change in serum P1NP

    Group difference in mean change of serum amino-terminal propeptide of type I collagen (P1NP) from baseline to 3 months

    Time frame: 3 months

  17. Mean change in serum C-telopeptides

    Group difference in mean change of serum C-telopeptides from baseline to 3 months

    Time frame: 3 months

  18. Mean change in musculoskeletal pain scores

    Musculoskeletal pain will be assessed with the Brief Pain Inventory (BPI). Group difference in the mean change in BPI scores.

    Time frame: 3 months

  19. Mean change in quality of life scores

    Health-related quality of life will be assessed through the Pediatric Quality of life (PedQoL) inventory. Group difference in the mean change in PedQoL scores.

    Time frame: 3 months

  20. Sickle cell disease-related complications

    Occurrence of sickle cell disease complications affecting bone, the kidneys, the retina, blood vessels, the heart, the lungs, the spleen, the liver and gallbladder during the study period

    Time frame: 3 months

  21. Participant recruitment

    Percentage of patients recruited from those screened

    Time frame: 3 months

  22. Participant retention

    Percentage of patients retained for the entire study duration

    Time frame: 3 months

  23. Participant compliance

    Percentage of patients who comply with the study protocol

    Time frame: 3 months

07

Study locations

1 site
  • CHU Sainte-Justine
    Montreal, Quebec H3T 1C5, Canada
08

References and documents

Publications

  • Soe HHK, Abas AB, Than NN, Ni H, Singh J, Said ARBM, Osunkwo I. Vitamin D supplementation for sickle cell disease. Cochrane Database Syst Rev. 2020 May 28;5(5):CD010858. doi: 10.1002/14651858.CD010858.pub3. PubMed 32462740 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Undecided

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Nov 2018 to primary completion in Sep 2019, 10 months.

Of 35 phase 3 interventional studies under Anemia, Sickle Cell, half reached primary completion within 48 months of starting (the median), counting those still running; a quarter within 36 and three quarters within 61. This study's 10 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 11, 2018
First posted
Jan 31, 2018
StartActual
Nov 30, 2018
Primary completionActual
Sep 30, 2019
CompletionActual
Sep 30, 2019
Last update
Mar 23, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 23, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03417947
Collaborators
Euro-Pharm
Responsible party
Genevieve Mailhot (Researcher, St. Justine's Hospital) — Principal investigator
First posted
Jan 31, 2018
Start date
Nov 30, 2018
Primary completion
Sep 30, 2019
Completion
Sep 30, 2019
Last update
Mar 23, 2020

Study contacts

Genevieve Mailhot, PhD
principal investigator · St. Justine's Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2020. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Cholecalciferol

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