Sickle Cell AnemiaNCT01558076
Longitudinal Changes in Exercise Capacity in Children and Young Adults With Sickle Cell Anemia
An observational study of Sickle Cell Anemia, run by Ann & Robert H Lurie Children's Hospital of Chicago at 1 site in United States.
Trial summary
The purpose of this study is to use comprehensive exercise testing to examine longitudinal changes in exercise capacity over a 2 year period in children and young adults with sickle cell anemia. Read more about this study
- Who is it for?
- Ages 8 to 21 yearsHealthy volunteers can take part
- Conditions the study is for
- Sickle Cell Anemia
- How many people
- 35 participants
- Where
- 1 siteUnited States
- Study dates
- Jan 2012to 11 Apr 2017
- Phase
- Observational
- 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 8 to 21 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Study population: Sickle cell anemia patients followed at Children's Memorial Hospital. Healthy controls without sickle cell anemia or sickle cell trait are recruited through flyers posted in Children's Memorial Hospital.
Who may be able to join
- age 8 to 21 years old; AND
- Hb SS or S-β0 thalassemia disease, confirmed by hemoglobin analysis; AND
- Previously participated in ClinicalTrials.gov ID: NCT01527799
Who cannot join
- inability to perform maximal testing due to physical limitation (e.g. stroke or avascular necrosis); OR
- history of exercise-induced syncope or arrhythmias. Subjects will wait at least 2 weeks following any vaso-occlusive pain episode and 12 weeks following any disease-related complication requiring transfusion support. Individuals on hydroxyurea will be eligible. A total of 30 controls without SCA or sickle cell trait will be matched for age, sex and race and recruited from the siblings, friends or relatives of subjects enrolled on this study
Trial locations and contacts
1 site in 1 country.
United States1 site
Ann & Robert H. Lurie Children's Hospital of Chicago
Chicago, Illinois, 60611
About this study
The purpose of this study is to use comprehensive exercise testing to examine longitudinal changes in exercise capacity over a 2 year period in children and young adults with sickle cell anemia.
Read the detailed description
Although the burden of sickle cell anemia (SCA) on affected individuals is significant, few studies have examined the influence of having SCA on such measures of physical function as exercise capacity. Moreover, the physiologic basis of poor physical functioning in children with SCA is unknown and has not been studied extensively. The purpose of this proposal is to use cardiopulmonary exercise testing (CPET) to gain a comprehensive understanding of longitudinal changes in exercise capacity, and the effect of poor exercise capacity on quality of life in children and young adults with SCA. The specific aims of this project are to: 1) Measure peak oxygen consumption (VO2), the reference standard for exercise capacity, in children and young adults with SCA classified by primary pathophysiologic contributor to their decreased exercise capacity, and 2) compare results of this exercise test with the results of previously completed exercise tests to determine longitudinal changes in exercise capacity. These aims will be performed in 60 subjects with SCA and 30 matched controls who participated in a previous study, IRB# 2009-13659; "The Physiologic Assessment of Exercise Capacity in Pediatric Sickle Cell Anemia". In a secondary analysis, we will also study the participants quality of life using a set of validated questionnaires. This study is essential because it will address several areas of exercise capacity, including the longterm effects of physiologic contributors to exercise limitation, that remain fundamental knowledge gaps in SCA.
- Conditions
- Sickle Cell Anemia
- Keywords
- Sickle cell anemia, exercise testing, cardiopulmonary disease
- Medical subject headings
- Anemia, Sickle Cell, Pulmonary Heart Disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Subjects with sickle cell anemia | 60 subjects with sickle cell anemia will be enrolled on the study. | |
| 30 healthy controls | 30 controls without sickle cell anemia or sickle cell trait will be enrolled on the study. |
What is being measured
The primary outcome is the main question the study is designed to answer.
VO2 max on cardiopulmonary exercise test
Measured: Baseline
Secondary outcomes (4)
Quality of life questionnaires
Measured: Baseline
Echocardiogram
Measured: Baseline
Dual Energy X-ray Absorbtiometry
Measured: Baseline
Pulmonary Function Test
Measured: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Mar 2012 (estimated)
- Study startJan 2012
- Primary completion11 Apr 2017
- Study completion11 Apr 2017
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.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 35 participants (actual)
Sponsor and investigators
- Lead sponsor
- Ann & Robert H Lurie Children's Hospital of Chicago
- Sponsor type
- University, hospital or other
- Collaborators
- National Heart, Lung, and Blood Institute (NHLBI)
- Responsible party
- Principal investigator, Robert I. Liem, Ann & Robert H Lurie Children's Hospital of Chicago
- Investigators
- Robert I Liem, MD MS, Principal investigator, Ann & Robert H Lurie Children's Hospital of Chicago
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01558076
- Sponsor's protocol ID
- 2011-14565
- Other IDs
- 1K23HL094376
- Status last verified
- Dec 2024
- First submitted
- 13 Mar 2012
- Last updated
- 18 Dec 2024
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 18 Dec 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Longitudinal Changes in Exercise Capacity in Children and Young Adults With Sickle Cell Anemia
- ClinicalTrials.gov ID
- NCT01558076
- Acronym / sponsor ID
- 2011-14565
- Conditions
- Sickle Cell Anemia
- Keywords
- Sickle cell anemia, exercise testing, cardiopulmonary disease
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 35 participants (actual)
- Lead sponsor
- Ann & Robert H Lurie Children's Hospital of ChicagoUniversity, hospital or other
- Collaborators
- National Heart, Lung, and Blood Institute (NHLBI)
- Study start
- Jan 2012 (actual)
- Primary completion
- 11 Apr 2017 (actual)
- Study completion
- 11 Apr 2017 (actual)
- First posted
- 20 Mar 2012 (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.
The purpose of this study is to use comprehensive exercise testing to examine longitudinal changes in exercise capacity over a 2 year period in children and young adults with sickle cell anemia.
Detailed description
Although the burden of sickle cell anemia (SCA) on affected individuals is significant, few studies have examined the influence of having SCA on such measures of physical function as exercise capacity. Moreover, the physiologic basis of poor physical functioning in children with SCA is unknown and has not been studied extensively. The purpose of this proposal is to use cardiopulmonary exercise testing (CPET) to gain a comprehensive understanding of longitudinal changes in exercise capacity, and the effect of poor exercise capacity on quality of life in children and young adults with SCA. The specific aims of this project are to: 1) Measure peak oxygen consumption (VO2), the reference standard for exercise capacity, in children and young adults with SCA classified by primary pathophysiologic contributor to their decreased exercise capacity, and 2) compare results of this exercise test with the results of previously completed exercise tests to determine longitudinal changes in exercise capacity. These aims will be performed in 60 subjects with SCA and 30 matched controls who participated in a previous study, IRB# 2009-13659; "The Physiologic Assessment of Exercise Capacity in Pediatric Sickle Cell Anemia". In a secondary analysis, we will also study the participants quality of life using a set of validated questionnaires. This study is essential because it will address several areas of exercise capacity, including the longterm effects of physiologic contributors to exercise limitation, that remain fundamental knowledge gaps in SCA.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Subjects with sickle cell anemia | – | –60 subjects with sickle cell anemia will be enrolled on the study. |
| 30 healthy controls | – | –30 controls without sickle cell anemia or sickle cell trait will be enrolled on the study. |
Who may qualify
- Ages
- 8 to 21 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
- Study population
- Sickle cell anemia patients followed at Children's Memorial Hospital. Healthy controls without sickle cell anemia or sickle cell trait are recruited through flyers posted in Children's Memorial Hospital.
Key inclusion criteria (3 listed)
- age 8 to 21 years old; AND
- Hb SS or S-β0 thalassemia disease, confirmed by hemoglobin analysis; AND
- Previously participated in ClinicalTrials.gov ID: NCT01527799
Key exclusion criteria (2 listed)
- inability to perform maximal testing due to physical limitation (e.g. stroke or avascular necrosis); OR
- history of exercise-induced syncope or arrhythmias. Subjects will wait at least 2 weeks following any vaso-occlusive pain episode and 12 weeks following any disease-related complication requiring transfusion support. Individuals on hydroxyurea will be eligible. A total of 30 controls without SCA or sickle cell trait will be matched for age, sex and race and recruited from the siblings, friends or relatives of subjects enrolled on this study
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
VO2 max on cardiopulmonary exercise test
Time frame: Baseline
4 secondary outcomes
Quality of life questionnaires
Time frame: Baseline
Echocardiogram
Time frame: Baseline
Dual Energy X-ray Absorbtiometry
Time frame: Baseline
Pulmonary Function Test
Time frame: Baseline
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 18 Dec 2024.
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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.
Robert I Liem, MD MS principal investigator
Ann & Robert H Lurie Children's Hospital of Chicago
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Sickle Cell Anemia, run by Ann & Robert H Lurie Children's Hospital of Chicago 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 2 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 18 Dec 2024. 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?
VO2 max on cardiopulmonary exercise test (time frame: Baseline). 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 18 Dec 2024.