Hemolytic AnemiaNCT07649213
Congenital Hemolytic and Dyserythropoietic Anemias
An observational study of Hemolytic Anemia, run by Children's Hospital Medical Center, Cincinnati at 1 site in United States.
Trial summary
The main reason for this research study is to further understand how some red blood cells are formed incorrectly or they have an abnormal metabolism in a way that they break easier in the circulation or during their passage through the spleen. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Hemolytic Anemia
- How many people
- 400 participants
- Where
- 1 siteUnited States
- Study dates
- 25 Jul 2011to Jul 2052
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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 Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: If medical history and review of the laboratory data obtained for clinical care, including CBC/reticulocyte count and review of the blood smear, indicates that the patient has a non-immune hemolytic anemia that may be due to a hemoglobinopathy, a red cell membrane skeleton or enzyme disorder, then the patients and their families will be asked for their participation in the study. The rare patients suspected to have congenital dyserythropoietic anemia will also be eligible for this study.
Who may be able to join
- Patients who have been diagnosed, by medical history and review of the laboratory data obtained for clinical care, including CBC/reticulocyte count and review of the blood smear, with a hereditary hemolytic anemia, where the genetic etiology is challenging to be identified.
- Parents and/or grandparents of children that have the above diagnosis. The parents and/or grandparents may or may not have non-immune hemolytic anemia (these will serve as positive or negative inherent controls)
Who cannot join
- 1) Patients with anemias known to be acquired and not associated with a genetic etiology.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
Cincinnati Children's Hospital Medical Center
Cincinnati, Ohio, 45229
About this study
The main reason for this research study is to further understand how some red blood cells are formed incorrectly or they have an abnormal metabolism in a way that they break easier in the circulation or during their passage through the spleen.
Participants and/or family members diagnosed with non-immune hemolytic anemia due to a genetic disorder, such as, hemoglobin disorder, erythrocyte membrane skeleton disorders (e.g. spherocytosis, elliptocytosis, or stomatocytosis) or hydration defect (e.g. xerocytosis, overhydrocytosis) or red blood cell (RBC) enzyme disorders, or with a congenital dyserythropoietic anemia (CDA) will be asked to participate.
Read the detailed description
The purpose of this study is to explore for known or yet unknown genetic mutations causative for non-immune hemolysis and/or anemia, in patients with hemoglobin disorders, membrane skeleton defects (a group of diseases including hereditary spherocytosis, hereditary elliptocytosis and pyropoikilocytosis, and hereditary stomatocytosis syndromes), RBC enzymopathies (most common of them being glucose-6-phosphate dehydrogenase (G6PD) and pyruvate kinase deficiency), and congenital dyserythropoietic anemias. The goal is to optimize genetic diagnosis for patients with non-immune congenital hemolytic anemias, and advance research on the pathogenesis and potentially improve treatment options for these rare disorders. The investigators include analysis for genes that are known or suspected to participate in the making of healthy red blood cells. Sequencing analysis of the UDP glucuronosyltransferase 1 family, polypeptide A1 (UGT1A1) is also included because the clinical care of these patients frequently necessitate such testing to evaluate for increased risk of cholelithiasis, due to co-inheritance of Gilbert syndrome.
This is a non-interventional study, focusing on improving diagnosis and understanding the mechanisms of how abnormalities of genes may affect the making and survival of red blood cells.
The traditional tests that usually suggest the diagnosis of an erythrocyte cytoskeleton defect or a RBC enzymopathy (erythrocyte morphology in the blood smear, osmotic fragility test, and ektacytometry or enzyme activity assay respectively) do not always provide a definitive diagnosis, especially because the diagnosis with those methods requires a pure population of the patient's red blood cells, obtainable three months after last PRBC transfusion, and is therefore complicated or impossible in the patients who need frequent transfusions. Erythrocyte membrane proteins can be prepared from washed red blood cells or potentially from isolated reticulocytes from the patient. Analysis of such sample by electrophoresis on polyacrylamide gel followed by western blot for specific proteins can be a valuable tool that orients towards the diagnosis and may point to the specific gene responsible for the disease.
The investigators propose a systematic approach to improve diagnostic evaluation of such diseases by completing a parallel analysis of ektacytometry, erythrocyte membrane proteins electrophoresis and western blot along with full exon sequencing using genomic DNA from isolated white blood cells in blood samples donated from approximately 400 patients and their parents. Our goal is to identify specific mutation(s) responsible for the patients' congenital hemolytic or dyserythropoietic anemia, and develop a genetic approach to the diagnosis of such diseases. In addition, such genetic data will offer valuable information towards understanding the pathogenesis of this group of diseases.
- Conditions
- Hemolytic Anemia
- Medical subject headings
- Anemia, Hemolytic
What is being measured
The primary outcome is the main question the study is designed to answer.
Percentage of Participants with an Established Molecular Diagnosis of a Red Blood Cell Disorder
The proportion of participants in whom a molecular diagnosis is established through genetic and laboratory evaluation, defined as identification of pathogenic or likely pathogenic variants associated with hereditary hemolytic anemia (including hemoglobin disorders, erythrocyte membrane disorders, and red blood cell enzymopathies) or dyserythropoietic anemia.
Measured: From enrollment to completion of molecular and diagnostic evaluation (approximately 12-24 months)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Jun 2026
- Study start25 Jul 2011
- Primary completionJul 2050 (estimated)
- Study completionJul 2052 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Hemolytic AnemiaStudies of the same condition, open and under way.
- More trials run by Children's Hospital Medical Center, CincinnatiThe 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
- Observational
- Observational model
- Other
- Time perspective
- Prospective
- Enrolment
- 400 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Children's Hospital Medical Center, Cincinnati
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07649213
- Sponsor's protocol ID
- Congenital Hem/2011-1510
- Status last verified
- Jun 2026
- First submitted
- 11 Feb 2026
- Last updated
- 17 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 17 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Congenital Hemolytic and Dyserythropoietic Anemias
- ClinicalTrials.gov ID
- NCT07649213
- Acronym / sponsor ID
- Congenital Hem/2011-1510
- Conditions
- Hemolytic Anemia
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 400 participants (estimated)
- Lead sponsor
- Children's Hospital Medical Center, CincinnatiUniversity, hospital or other
- Study start
- 25 Jul 2011 (actual)
- Primary completion
- Jul 2050 (estimated)
- Study completion
- Jul 2052 (estimated)
- First posted
- 16 Jun 2026 (actual)
- 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 main reason for this research study is to further understand how some red blood cells are formed incorrectly or they have an abnormal metabolism in a way that they break easier in the circulation or during their passage through the spleen.
Participants and/or family members diagnosed with non-immune hemolytic anemia due to a genetic disorder, such as, hemoglobin disorder, erythrocyte membrane skeleton disorders (e.g. spherocytosis, elliptocytosis, or stomatocytosis) or hydration defect (e.g. xerocytosis, overhydrocytosis) or red blood cell (RBC) enzyme disorders, or with a congenital dyserythropoietic anemia (CDA) will be asked to participate.
Detailed description
The purpose of this study is to explore for known or yet unknown genetic mutations causative for non-immune hemolysis and/or anemia, in patients with hemoglobin disorders, membrane skeleton defects (a group of diseases including hereditary spherocytosis, hereditary elliptocytosis and pyropoikilocytosis, and hereditary stomatocytosis syndromes), RBC enzymopathies (most common of them being glucose-6-phosphate dehydrogenase (G6PD) and pyruvate kinase deficiency), and congenital dyserythropoietic anemias. The goal is to optimize genetic diagnosis for patients with non-immune congenital hemolytic anemias, and advance research on the pathogenesis and potentially improve treatment options for these rare disorders. The investigators include analysis for genes that are known or suspected to participate in the making of healthy red blood cells. Sequencing analysis of the UDP glucuronosyltransferase 1 family, polypeptide A1 (UGT1A1) is also included because the clinical care of these patients frequently necessitate such testing to evaluate for increased risk of cholelithiasis, due to co-inheritance of Gilbert syndrome.
This is a non-interventional study, focusing on improving diagnosis and understanding the mechanisms of how abnormalities of genes may affect the making and survival of red blood cells.
The traditional tests that usually suggest the diagnosis of an erythrocyte cytoskeleton defect or a RBC enzymopathy (erythrocyte morphology in the blood smear, osmotic fragility test, and ektacytometry or enzyme activity assay respectively) do not always provide a definitive diagnosis, especially because the diagnosis with those methods requires a pure population of the patient's red blood cells, obtainable three months after last PRBC transfusion, and is therefore complicated or impossible in the patients who need frequent transfusions. Erythrocyte membrane proteins can be prepared from washed red blood cells or potentially from isolated reticulocytes from the patient. Analysis of such sample by electrophoresis on polyacrylamide gel followed by western blot for specific proteins can be a valuable tool that orients towards the diagnosis and may point to the specific gene responsible for the disease.
The investigators propose a systematic approach to improve diagnostic evaluation of such diseases by completing a parallel analysis of ektacytometry, erythrocyte membrane proteins electrophoresis and western blot along with full exon sequencing using genomic DNA from isolated white blood cells in blood samples donated from approximately 400 patients and their parents. Our goal is to identify specific mutation(s) responsible for the patients' congenital hemolytic or dyserythropoietic anemia, and develop a genetic approach to the diagnosis of such diseases. In addition, such genetic data will offer valuable information towards understanding the pathogenesis of this group of diseases.
Study design
- Observational model
- Other
- Time perspective
- Prospective
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- If medical history and review of the laboratory data obtained for clinical care, including CBC/reticulocyte count and review of the blood smear, indicates that the patient has a non-immune hemolytic anemia that may be due to a hemoglobinopathy, a red cell membrane skeleton or enzyme disorder, then the patients and their families will be asked for their participation in the study. The rare patients suspected to have congenital dyserythropoietic anemia will also be eligible for this study.
Key inclusion criteria (2 listed)
- Patients who have been diagnosed, by medical history and review of the laboratory data obtained for clinical care, including CBC/reticulocyte count and review of the blood smear, with a hereditary hemolytic anemia, where the genetic etiology is challenging to be identified.
- Parents and/or grandparents of children that have the above diagnosis. The parents and/or grandparents may or may not have non-immune hemolytic anemia (these will serve as positive or negative inherent controls)
Key exclusion criteria (1 listed)
- 1) Patients with anemias known to be acquired and not associated with a genetic etiology.
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
Percentage of Participants with an Established Molecular Diagnosis of a Red Blood Cell Disorder
Time frame: From enrollment to completion of molecular and diagnostic evaluation (approximately 12-24 months)
The proportion of participants in whom a molecular diagnosis is established through genetic and laboratory evaluation, defined as identification of pathogenic or likely pathogenic variants associated with hereditary hemolytic anemia (including hemoglobin disorders, erythrocyte membrane disorders, and red blood cell enzymopathies) or dyserythropoietic anemia.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Jun 2026.
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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.
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 Hemolytic Anemia, run by Children's Hospital Medical Center, Cincinnati 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 2 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: looking for participants now, as of the sponsor's last update on 17 Jun 2026. 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Amy Shova (513-803-1917, amy.shova@cchmc.org), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Percentage of Participants with an Established Molecular Diagnosis of a Red Blood Cell Disorder (time frame: From enrollment to completion of molecular and diagnostic evaluation (approximately 12-24 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 17 Jun 2026.