Pulmonary Hypertension in Patients With Sickle Cell Disease in Nigeria (NCT00367523) | Clinical Trial Compass
CompletedNot Applicable
Pulmonary Hypertension in Patients With Sickle Cell Disease in Nigeria
Nigeria308 participantsStarted 2006-06-15
Plain-language summary
This study will explore how people with sickle cell disease (SCD) develop a complication called pulmonary hypertension (PHTN), a serious disease in which blood pressure in the lungs is higher than normal. PHTN is also caused by HIV, hepatitis C and schistosomiasis. Patients who have both SCD and one of these other infections may develop more severe PHTN. The number of Nigerians with SCD who also have PHTN is not known, nor is the cause of PHTN in this population. This study will examine genetic material in people with and without SCD to determine whether certain genes will allow doctors to predict which patients with SCD are likely to develop PHTN.
Nigerian males and females 10 years of age and older with or without SCD may be eligible for this study. Patients must have SS, SC, or SB thalassemia or other genotype; control subjects must have hemoglobin A or AS genotype.
Participants undergo a complete medical history and physical examination, blood tests, electrocardiogram (EKG), ultrasound tests of the heart and abdomen, and a 6-minute walk (distance test) to determine exercise capacity. Blood tests include screening for HIV, hepatitis B and C, schistosomiasis, hookworm and malaria. Patients who test positive for HIV, hepatitis B or C, schistosomiasis, hookworm or malaria are referred for treatment at Ahmadu Bello University Teaching Hospital in Zaria, Nigeria, and those who test negative for hepatitis B are referred for vaccination. Genetic tests focus on genes involved in SCD, PHTN, inflammation, blood vessel function and red blood cell function.
Who can participate
Age range
5 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
* INCLUSION CRITERIA:
All volunteer subjects 5 years of age and above and able to provide informed, written consent for participation in this study. Children will be included in this study provided that a legally authorized representative provides fully informed consent. Assent of children will also be required.
Inclusion Criteria for Volunteers with Sickle Cell:
* Nigerian male and females over 5 years of age
* Diagnosis of sickle cell disease (electrophoretic documentation of SS, SC, or SBeta thalassemia or other genotype is required)
Inclusion Criteria for Control Subjects:
* Nigerian males and females over 5 years of age.
* Electrophoretic documentation of hemoglobin A or AS genotype.
EXCLUSION CRITERIA:
Exclusion Criteria for Volunteers with Sickle Cell:
* Hb A-only phenotype and sickle cell trait
* Decisionally impaired subjects.
* Persons not able to understand the investigational nature of the study or give informed consent.
Exclusion Criteria for Control Subjects:
* Diagnosis of sickle cell disease (electrophoretic documentation of SS, SC, SBeta thallassemia or other sickling genotype)
* Decisionally impaired subjects.
* Persons not able to understand the investigational nature of the study or give informed consent.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Trial details
NCT IDNCT00367523
SponsorNational Heart, Lung, and Blood Institute (NHLBI)