Sickle Cell AnemiaNCT00672789
Adherence to Hydroxyurea in Children With Sickle Cell Anemia
A study testing Blood smear education and standard education in people with Sickle Cell Anemia, run by Duke University at 1 site in United States.
Trial summary
Medication non-adherence is a true public health problem. Despite advancements in the molecular understanding of disease and improvements in therapy, patient health outcomes will not improve unless patients take prescribed medications regularly. Read more about this study
- Who is it for?
- Ages 2 to 17 years
- Conditions the study is for
- Sickle Cell Anemia
- What is being tested?
- Blood smear education and standard education
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 31 participants
- Where
- 1 siteUnited States
- Study dates
- Apr 2008to Nov 2012
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 2 to 17 years
- All sexes
- No healthy volunteers
- Child
Who may be able to join
- Sickle cell anemia
- on Hydroxyurea for at least six months
- age 2-17.9 years
Who cannot join
- none
Trial locations and contacts
1 site in 1 country.
United States1 site
Duke University Medical Center
Durham, North Carolina, 27710
About this study
Medication non-adherence is a true public health problem. Despite advancements in the molecular understanding of disease and improvements in therapy, patient health outcomes will not improve unless patients take prescribed medications regularly. Decreasing the gap between efficacious and effective therapy for patients with SCD is an essential research agenda. Hydroxyurea has been shown to be safe and efficacious in children and infants. However, the effectiveness of the prophylaxis depends on adherence to the recommended regimen. Medication adherence in SCD has previously been found to be sub-optimal in patients taking penicillin, desferoxamine, and pain medication. Adherence to HU has been studied to some extent in children with SCD. Based on estimates of adherence in other chronic illness we expect approximately 50% of patients to be >80% adherent with their HU administration. There is no gold standard for improving adherence to treatment. There have been a few attempts in the SCD population to improve adherence. These include a day camp to promote education about desferoxamine and peer support, a combination of a slide-show about SCD and it complications, weekly phone calls by the clinic social worker and a calendar, and a seven-phase educational program. Given the striking improvements in the peripheral blood smear findings of patients with SCD on HU therapy, with reduction in the numbers of sickled cells, we hypothesize that viewing the peripheral blood smear of patients with poor adherence to HU compared to a blood smear of someone on HU can be used to improve adherence in non-adherent patients.
We will conduct a randomized trial between the intervention of regularly showing children and their parents the peripheral blood smear and standard care, including reminders of the importance of compliance and review of complete blood count parameters, including WBC, MCV, and Hgb concentration. The outcome measures will be increase in hemoglobin concentration and %HbF and increase in perceived QOL. QOL will be measured with age-appropriate and parent/proxy PedsQL™. Medication adherence will also be monitored throughout the study with pharmacy prescription refills, physician assessment, and self-report via a visual analogue scale. Adherence estimates, hemoglobin concentration, %HbF and QOL will be measured at baseline, 3 months and 6 months.
- Conditions
- Sickle Cell Anemia
- Being tested
- Blood smear education, standard education
- Keywords
- Sickle cell anemia, Children, Hydroxyurea, Treatment Adherence
- Medical subject headings
- Anemia, Sickle Cell, Treatment Adherence and Compliance
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Blood smear educationBehavioural
education at baseline and three month follow-up
standard educationOther
standard education
| Study group | Role | What they receive |
|---|---|---|
| 1 | Experimental | Blood Smear Education Receives: Behavioral: Blood smear education |
| 2 | Active comparator | Standard education Receives: Other: standard education |
What is being measured
The primary outcome is the main question the study is designed to answer.
treatment adherence
Measured: six months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 May 2008 (estimated)
- Study startApr 2008
- Primary completionNov 2012
- Study completionNov 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Sickle Cell AnemiaStudies of the same condition, open and under way.
- More trials run by Duke UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Health services research
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 31 participants (actual)
Sponsor and investigators
- Lead sponsor
- Duke University
- Sponsor type
- University, hospital or other
- Collaborators
- National Institutes of Health (NIH)
- Responsible party
- Sponsor
- Investigators
- Courtney D Thornburg, MD, MS, Principal investigator, Duke University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00672789
- Sponsor's protocol ID
- Pro00000118
- Status last verified
- Nov 2012
- First submitted
- 4 May 2008
- Last updated
- 27 May 2013
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 27 May 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Adherence to Hydroxyurea in Children With Sickle Cell Anemia
- ClinicalTrials.gov ID
- NCT00672789
- Acronym / sponsor ID
- Pro00000118
- Conditions
- Sickle Cell Anemia
- Keywords
- Sickle cell anemia, Children, Hydroxyurea, Treatment Adherence
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 31 participants (actual)
- Lead sponsor
- Duke UniversityUniversity, hospital or other
- Collaborators
- National Institutes of Health (NIH)
- Study start
- Apr 2008
- Primary completion
- Nov 2012 (actual)
- Study completion
- Nov 2012 (actual)
- First posted
- 6 May 2008 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Medication non-adherence is a true public health problem. Despite advancements in the molecular understanding of disease and improvements in therapy, patient health outcomes will not improve unless patients take prescribed medications regularly. Decreasing the gap between efficacious and effective therapy for patients with SCD is an essential research agenda. Hydroxyurea has been shown to be safe and efficacious in children and infants. However, the effectiveness of the prophylaxis depends on adherence to the recommended regimen. Medication adherence in SCD has previously been found to be sub-optimal in patients taking penicillin, desferoxamine, and pain medication. Adherence to HU has been studied to some extent in children with SCD. Based on estimates of adherence in other chronic illness we expect approximately 50% of patients to be >80% adherent with their HU administration. There is no gold standard for improving adherence to treatment. There have been a few attempts in the SCD population to improve adherence. These include a day camp to promote education about desferoxamine and peer support, a combination of a slide-show about SCD and it complications, weekly phone calls by the clinic social worker and a calendar, and a seven-phase educational program. Given the striking improvements in the peripheral blood smear findings of patients with SCD on HU therapy, with reduction in the numbers of sickled cells, we hypothesize that viewing the peripheral blood smear of patients with poor adherence to HU compared to a blood smear of someone on HU can be used to improve adherence in non-adherent patients.
We will conduct a randomized trial between the intervention of regularly showing children and their parents the peripheral blood smear and standard care, including reminders of the importance of compliance and review of complete blood count parameters, including WBC, MCV, and Hgb concentration. The outcome measures will be increase in hemoglobin concentration and %HbF and increase in perceived QOL. QOL will be measured with age-appropriate and parent/proxy PedsQL™. Medication adherence will also be monitored throughout the study with pharmacy prescription refills, physician assessment, and self-report via a visual analogue scale. Adherence estimates, hemoglobin concentration, %HbF and QOL will be measured at baseline, 3 months and 6 months.
Study design
- Primary purpose
- Health services research
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 1 | Experimental | Behavioral: Blood smear educationBlood Smear Education |
| 2 | Active comparator | Other: standard educationStandard education |
Who may qualify
- Ages
- 2 to 17 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child
Key inclusion criteria (3 listed)
- Sickle cell anemia
- on Hydroxyurea for at least six months
- age 2-17.9 years
Key exclusion criteria (1 listed)
- none
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Blood smear educationeducation at baseline and three month follow-up | Behavioural | 1 |
| standard educationstandard education | Other | 2 |
Primary outcome
treatment adherence
Time frame: six months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 May 2013.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Courtney D Thornburg, MD, MS principal investigator
Duke University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Blood smear education and standard education in people with Sickle Cell Anemia, run by Duke University at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 27 May 2013. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
treatment adherence (time frame: six months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 May 2013.