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Active clinical trials for "Hemoglobinuria, Paroxysmal"

Results 121-130 of 135

Natural History Study of Adult Patients With Paroxysmal Nocturnal Hemoglobinuria of High-risk Hemolysis...

Paroxysmal Nocturnal HemoglobinuriaNatural History Study

This is a single-center observational study conducted in adult patients with paroxysmal nocturnal hemoglobinuria of high-risk hemolysis. This observational study consists of two parts, one part is retrospective study which aims to collect medical chart data to calculate the mean change or mean incidence rates of LDH, hemoglobin, PNH-related symptoms and PNH-related events over 6 months. The other part is cross-sectional study to detect the total C5 level in PUMCH at the latest follow-up visit in eligible PNH patients with high-risk hemolysis, to show the difference between eligible PNH patients and healthy people and to explore the related clinical factor influencing high-level total C5 using logistic regression model.

Completed15 enrollment criteria

Compassionate Use of Pozelimab and Cemdisiran Combination Therapy in Patients With Paroxysmal Nocturnal...

Paroxysmal Nocturnal Hemoglobinuria

This program is designed to provide access to pozelimab and cemdisiran and document the long-term safety of pozelimab and cemdisiran combination therapy in patients with paroxysmal nocturnal hemoglobinuria (PNH). PNH is a rare immune disease that causes red blood cells in your body to break apart.

Available12 enrollment criteria

Hematological Response in Patients With Paroxysmal Nocturnal Hemoglobinuria Treated With Anti-C5...

Paroxysmal Nocturnal Hemoglobinuria

The aim of this non-interventional secondary use of data study is to evaluate hematological response in patients with paroxysmal nocturnal hemoglobinuria and anemia in the 6-month period after initiation of anti-C5 antibody treatment using real-world data obtained from multiple datasets. The results will be used to contextualize results from the APPOINT-PNH (NCT04820530) trial with iptacopan.

Completed9 enrollment criteria

Paroxysmal Nocturnal Hemoglobinuria (PNH), Level of CD59 on Red and White Blood Cells in Bone Marrow...

Hemoglobinuria

Examine red and white blood cells of PNH patients with bone marrow failure syndromes.

Completed3 enrollment criteria

Electronic Patient-reported Outcome Monitoring in Aplastic Anemia and Paroxysmal Nocturnal Hemoglobinuria...

Aplastic AnemiaParoxysmal Nocturnal Hemoglobinuria

Aplastic anemia (AA) and paroxysmal nocturnal hemoglobinuria (PNH) are interrelated and very rare diseases. Therefore, little data about clinical characteristics, especially the variety of symptoms in the course of the respective disease are available. As a consequence, patients may be left on their own between infrequent follow-ups at a specialist center. A web-based symptom-monitoring application can support selfmanagement and patient empowerment and promotes a patient- centered interdisciplinary team approach in the context of a "disease management program". This pilot study is to investigate usability and feasibility of the electronic Patient-Reported Outcome (ePRO) application in AA/PNH by assessing recruitment, app utilization, data collection, functionality, acceptability after using and working with the ePRO application.

Completed3 enrollment criteria

The Pharmacokinetics and Pharmacodynamics of Eculizumab in Patients With Paroxysmal Nocturnal Hemoglobinuria...

Paroxysmal Nocturnal HemoglobinuriaEculizumab1 more

Because of the inter and intra individual variability in pharmacokinetics and pharmacodynamics of eculizumab in PNH patients, a tailored treatment approach for the individual is probably preferable. The starting point of a robust tailored dosing approach for eculizumab is the development of a population pharmacokinetic-pharmacodynamic model. In this cross-sectional observational pharmacokinetic and pharmacodynamic study, trough and peak concentrations of eculizumab are measured to describe the pharmacokinetics and complement activation markers to describe the pharmacodynamics.

Completed4 enrollment criteria

Transfer of GPI-Linked Proteins to Transfused Patients With Paroxysmal Nocturnal Hemoglobinuria...

Paroxysmal Hemoglobinuria

This study will examine blood cells of patients with paroxysmal nocturnal hemoglobinuria (PNH) after they receive a blood transfusion to determine if certain proteins (GPI-linked proteins) in the transfused blood transfer to the patient's blood cells. GPI-linked proteins, which are normally present on red cells and regulate red cell survival, are absent in patients with PNH. Their lack is believed to account for the premature destruction of red blood cells in these patients, resulting in a low hemoglobin and hematocrit. Patients may experience fatigue, flank pain and other symptoms, requiring treatment with blood transfusion. Patients with PNH 18 years of age or older with group A1 blood who require at least three units of red cells and who have not been transfused with group O blood within the last 3 months may be eligible for this study. Participants will come to the NIH Clinical Center for the following procedures: Interview about the severity of their anemia-related symptoms Blood test Blood transfusion, if required. Patients will be transfused with compatible group O blood. The donor blood will be washed (rinsed with a salt solution) until it is 99% free of donor plasma. Group O blood is given instead of group A1 in order to be able to distinguish the patient's cells from the transfused cells. Blood samples of 3 teaspoons each will be drawn 1 day, 1 week, and 3 weeks after the transfusion. These samples may be collected by the patient's doctor locally and sent to NIH by mail. If it is found that GPI-linked proteins transfer to the patient's cells, the study will also examine how long the proteins remain attached and will assess whether the proteins are functional and prevent cell destruction.

Completed13 enrollment criteria

Microvascular and Cardiac Dysfunction in Paroxysmal Nocturnal Hemoglobinuria and Sickle Cell Disease...

Rheologic DiseaseSickle Cell Disease1 more

The purpose of this study is to examine how abnormal blood flow in the small vessels (microvessels) of the heart, muscle and kidney in paroxysmal nocturnal hemoglobinuria (PNH) or sickle cell disease leads to poor functioning of the heart and kidney. To test this question, the investigators will perform imaging tests (contrast ultrasound perfusion imaging) to look at the flow and function of these microvessels and compare this information to heart and kidney function. To further look at this question, patients who have PNH will be studied before and after starting a new drug (Soliris) that decreases damage to blood cells. In patients with sickle cell disease, patients will be studied at baseline (not during a pain crisis) and also during a pain crisis if one develops.

Completed2 enrollment criteria

The Molecular Biology of Paroxysmal Nocturnal Hemoglobinuria (PNH)

HemoglobinuriaParoxysmal

This study is designed to better understand the molecular biology of paroxysmal nocturnal hemoglobinuria (PNH) and to determine if prion protein (PrP) functions in long term hematopoietic stem cell renewal.

Completed3 enrollment criteria

Identifying Characteristics of Bone Marrow Failure Syndromes

Bone Marrow Failure SyndromesAnemia10 more

Bone marrow failure syndromes (BMFS) are rare disorders characterized by dysfunctional hematopoietic stem cells, which give rise to all red and white blood cells. The deficiency of blood cells, or cytopenia, caused by this malfunction leads to an assortment of diseases and disorders, all of which are characterized as BMFS. Because these diseases are rare, conducting research on them is difficult, and standards of treatment for most BMFS have yet to be developed. This study will collect clinical and laboratory data from people with BMFS to identify the characteristics and biological markers associated with these diseases over time. This information will assist doctors and researchers to develop better therapies and diagnostic tests that will help improve the management of BMFS and cytopenias.

Unknown status2 enrollment criteria
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