New pill shows promise for PNH patients still anemic on standard therapy
NCT ID NCT07052838
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a new tablet called HSK39297 in 36 adults with paroxysmal nocturnal hemoglobinuria (PNH) who still had anemia despite stable treatment with anti-C5 antibodies. The goal was to see if the pill could raise hemoglobin levels and reduce the need for blood transfusions. The trial is now complete, and results will show if this adds a new option for managing PNH.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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36 people
The number who actually took part.
- Started
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May 2025
- Finished
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Jan 2026
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 75 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age ≥ 18 and ≤ 75 years, Male and female patients. * Diagnosis of PNH based on flow cytometry showing \>10% granulocyte clone size during the screening period. * Stable use of Anti-C5 antibody at least 6 months prior to enrollment. * Hemoglobin level \< 10 g/dL at screening. Exclusion Criteria: * Hereditary or acquired complement deficiency. * Active primary or secondary immunodeficiency. * History of splenectomy, bone marrow/hematopoietic stem cell or solid organ transplants. * History of recurrent invasive infections caused by encapsulated organisms( e.g. meningococcus or pneumococcus) or Mycobacterium tuberculosis. * Patients with laboratory evidence of bone marrow failure (reticulocytes \< 100x109/L, or platelets \< 30x109/L or neutrophils \< 0.5x109/L). * Active systemic infection within 2 weeks prior to study drug administration. * History of serious comorbidities that have been determined to be unsuitable for participation in the study. * Pregnant or Lactating women.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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The First Affiliated Hospital of Nanjing Medical University
Nanjing, Jiangsu, China
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The First Affiliated Hospital, College of Medicine, Zhejiang University
Hangzhou, Zhejiang, China
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- A pill that could replace infusions for a rare blood disease?
- Every-8-Week shot could simplify PNH treatment
- Real-World test: can a targeted drug keep PNH in check for years?
- New transplant method aims to reduce complications in bone marrow failure patients
- No treatment, just observation: large study looks at PNH blood cells