Paroxysmal Nocturnal Hemoglobinuria

Browse recruiting and upcoming clinical trials for paroxysmal nocturnal hemoglobinuria.

Patient-friendly, AI-assisted summaries based on official ClinicalTrials.gov ↗ records. Last updated: Oct 10, 2026

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ClinicalTrials.gov is the complete and most up-to-date source. Trials may be missing, and trial information may have changed since our last check. Always verify important information in the official registry.

43 trials + 1 related

Showing 43 trials, plus 1 related

Who can join AIAdults (≥18) with paroxysmal nocturnal hemoglobinuria (PNH) confirmed by flow cytometry and evidence of active disease (e.g., LDH ≥1.5×ULN or recent PNH symptoms).
What is being studied AITests safety, pharmacokinetics, and pharmacodynamics of multiple IV doses of EA5 in adults with PNH.
Study typeTreatment (drug) · Phase 1
CountriesChina
Who can join AIAdults with Paroxysmal Nocturnal Hemoglobinuria (PNH) who remain anemic despite treatment with an approved C5 inhibitor.
What is being studied AITests safety, tolerability, drug levels, and effect on Complement Factor B in PNH patients on C5 inhibitors.
Study typeTreatment (drug) · Phase 1/2
CountriesCanada, South Korea, United Kingdom
Who can join AIAdults with Paroxysmal Nocturnal Hemoglobinuria (PNH) whose hemolysis is inadequately controlled on current C5 inhibitor therapy.
What is being studied AITests pozelimab plus cemdisiran for lowering hemolysis in PNH uncontrolled by approved C5 inhibitors.
Study typeTreatment (drug) · Phase 3
CountriesBrazil, Canada, Italy +4
Who can join AIChildren aged 12–17 with paroxysmal nocturnal hemoglobinuria (PNH) and clinically significant extravascular hemolysis on ravulizumab or eculizumab.
What is being studied AITests danicopan added to ravulizumab or eculizumab for blood and symptom measures in pediatric PNH.
Study typeTreatment (drug) · Phase 3
CountriesCanada, France, United Kingdom
Who can join AIPeople aged 0–75 with severe aplastic anemia, paroxysmal nocturnal hemoglobinuria, acquired pure red cell aplasia, or acquired amegakaryocytic thrombocytopenia.
What is being studied AITests a reduced-intensity allogeneic HCT regimen that uses post-transplant cyclophosphamide.
Study typeTreatment (drug) · Phase 2
CountriesUnited States
Who can join AIAdults (18+) with paroxysmal nocturnal hemoglobinuria (PNH), including parent-study completers and people with C5 polymorphisms refractory to eculizumab/ravulizumab.
What is being studied AITests long-term safety and efficacy of pozelimab plus cemdisiran in PNH.
Study typeTreatment (drug) · Phase 3
CountriesBrazil, Canada, Colombia +17
Who can join AIPeople with severe aplastic anemia (SAA), hypoplastic myelodysplastic syndrome (MDS), or paroxysmal nocturnal hemoglobinuria (PNH).
What is being studied AITests safety and 1-year chronic GVHD‑free survival after haploidentical PBSC transplant with post‑transplant cyclophosphamide.
Study typeTreatment (drug) · Phase 2
CountriesUnited States
Who can join AIPeople age 4–80 with severe aplastic anemia, certain myelodysplastic syndromes, PNH, or pure red cell aplasia who are candidates for allogeneic stem-cell transplant.
What is being studied AITests a modified donor stem-cell transplant using CD34+ selected cells with reduced non-mobilized T-cells.
Study typeTreatment (procedure/device)
CountriesUnited States
Who can join AIAdults (≥18) with paroxysmal nocturnal hemoglobinuria who completed prior NTQ5082 treatment or are in a control group receiving eculizumab.
What is being studied AITests long-term safety and effects of NTQ5082 capsules in people with PNH.
Study typeTreatment (drug) · Phase 3
CountriesChina
Recruiting
Who can join AIPeople with Paroxysmal Nocturnal Hemoglobinuria (PNH) treated with Danicopan as an add-on to eculizumab or ravulizumab.
What is being studied AICollects real-world safety and effectiveness data for Danicopan as add-on to eculizumab or ravulizumab.
Study typeObservational
CountriesSouth Korea
Who can join AIPeople of any age with paroxysmal nocturnal hemoglobinuria (PNH) confirmed by flow cytometry.
What is being studied AICollects real-world clinical, patient-reported, resource-use, and long-term safety data on PNH patients.
Study typeObservational
CountriesUnited States
Recruiting
Who can join AIAdults aged 18–99 with a diagnosis of Paroxysmal Nocturnal Hemoglobinuria (PNH) who can read English.
What is being studied AICollects home-reported symptoms, treatment use, and quality-of-life data from people with PNH.
Study typeObservational
CountriesUnited States
Who can join AIPeople diagnosed with certain hematological (blood) diseases or who received a bone marrow transplant at a participating hospital on or after January 1, 2020.
What is being studied AICollects clinical, treatment, outcome, and cost data for people with hematological diseases.
Study typeObservational
CountriesChina
Not yet recruiting
Who can join AIAdults (18–75) with extrahepatic portal vein obstruction (EHPVO) and related hematological conditions listed in the record.
What is being studied AICollects past blood tests (CBC, LFTs) and clotting/thrombophilia results from medical records.
Study typeObservational
CountriesNot posted yet
Who can join AIFemales who are pregnant, postpartum, or breastfeeding and were exposed to Ultomiris, including those with PNH, aHUS, gMG, or NMOSD.
What is being studied AICollects pregnancy, maternal, fetal and infant outcome data after Ultomiris exposure.
Study typeRegistry
CountriesAustralia, France, Germany +4
Recruiting
Who can join AIPeople of any age with a confirmed or diagnosis-consistent case of paroxysmal nocturnal hemoglobinuria (PNH).
What is being studied AICollects long-term health, treatment, and quality-of-life data from people with PNH.
Study typeRegistry
CountriesUnited States

Trials that may include paroxysmal nocturnal hemoglobinuria (1)

ClinicalTrials.gov returned these when we searched for this condition, but we could not confirm from the registry records that they are intended for people with it. Check each trial’s eligibility criteria, and ask the study team if you are unsure.