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Estudio de no inferioridad controlado con ravulizumab para evaluar la eficacia y la seguridad de la terapia combinada de pozelimab y cemdisirán en pacientes adultos con hemoglobinuria paroxística nocturna que no han recibido tratamiento previo con inhibidores del complemento o que no han recibido recientemente terapia con inhibidores del complemento (ACCESS-1)

4 de noviembre de 2026 actualizado por: Regeneron Pharmaceuticals

Un estudio aleatorizado, abierto, controlado con ravulizumab, de no inferioridad para evaluar la eficacia y la seguridad de la terapia combinada de pozelimab y cemdisirán en pacientes con hemoglobinuria paroxística nocturna que no han recibido tratamiento previo con inhibidores del complemento o que no han recibido recientemente terapia con inhibidores del complemento

This study is researching a clinical treatment combination with two experimental drugs called pozelimab and cemdisiran. The study is focused on people with paroxysmal nocturnal hemoglobinuria (PNH). The aim of the study is to see how safe and effective the pozelimab + cemdisiran combination is for people with PNH and how the combination compares with 2 existing treatments: ravulizumab and eculizumab.

The pozelimab + cemdisiran combination may be referred to as "study drugs". Ravulizumab and eculizumab may also be called the "comparator drug".

The study is looking at several research questions, including:

  • How effective is the pozelimab + cemdisiran combination compared to ravulizumab?
  • How effective is pozelimab + cemdisiran combination compared to eculizumab?
  • What side effects may happen from taking the study drugs?
  • How much study drugs are in the blood at different times?
  • Whether the body makes antibodies against the study drugs (which could make the study drugs less effective or could lead to side effects)

Descripción general del estudio

Tipo de estudio

Intervencionista

Inscripción (Actual)

202

Fase

  • Fase 3

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

      • São Paulo, Brasil, 08270-070
        • Casa de Saude Santa Marcelina
      • São Paulo, Brasil, 01321-001
        • A Beneficencia Portuguesa de Sao Paulo, BP Mirante
    • São Paulo
      • Santo André, São Paulo, Brasil, 09060-650
        • Centro de Estudos e Pesquisas em Hematologia e Oncologia
    • Ontario
      • Toronto, Ontario, Canadá, M5G 2C4
        • Toronto General Hospital
    • Antioquia
      • Medellín, Antioquia, Colombia, 050034
        • Hospital Pablo Tobon Uribe
      • Busan, Corea del Sur, 49241
        • Pusan National University Hospital
      • Seoul, Corea del Sur, 06351
        • Samsung Medical Center
      • Seoul, Corea del Sur, 03722
        • Severance Hospital
      • Seoul, Corea del Sur, 07985
        • Ewha Womans University Mokdong Hospital
      • Seoul, Corea del Sur, 02841
        • Korea University Hospital
      • Seoul, Corea del Sur, 065791
        • Seoul St. Mary's Hospital - The Catholic University of Korea
    • Gyeonggi-do
      • Suwon, Gyeonggi-do, Corea del Sur, 16247
        • St. Vincent Hospital
      • Suwon, Gyeonggi-do, Corea del Sur, 16499
        • Ajou University Medical Center
    • Namdong-Gu
      • Incheon, Namdong-Gu, Corea del Sur, 21565
        • Gachon University Gil Medical Center
      • Barcelona, España, 08036
        • Hospital Clinic de Barcelona
      • Murcia, España, 30008
        • Hospital General JM Morales Meseguer
      • Salamanca, España, 37007
        • Hospital Clinico Universitario de Salamanca
    • Vizcaya
      • Bilbao, Vizcaya, España, 48013
        • Hospital Universitario Basurto
    • California
      • Whittier, California, Estados Unidos, 90602
        • The Oncology Institute of Hope & Innovation
    • Central Luzon
      • Quezon, Central Luzon, Filipinas, 1011
        • St Lukes Medical Center
      • Thessaloniki, Grecia, 57010
        • George Papanikolaou Hospital
      • Budapest, Hungría, 1083
        • Semmelweis University
      • Jaipur, India, 302017
        • Bhagwan Mahaveer Cancer Hospital and Research Centre (BMCHRC)
    • Kerala
      • Kannur, Kerala, India, 670103
        • Malabar Cancer Center, Kerala
      • Kochi, Kerala, India, 682041
        • Amrita Institute of Medical Sciences (AIMS) and Research Centre Aims
    • Maharashtra
      • Mumbai, Maharashtra, India, 400022
        • K J Somaiya Super Specialty Hospital & Research Centre
    • National Capital Territory of Delhi
      • New Delhi, National Capital Territory of Delhi, India, 110085
        • Rajiv Gandhi Cancer Institute & Research Center (RGCIRC) - Rohini Campus
    • Punjab
      • Chandigarh, Punjab, India, 708248
        • Postgraduate Institute of Medical Education & Research (PGIMER)
    • Uttar Pradesh
      • Lucknow, Uttar Pradesh, India, 226014
        • Sanjay Gandhi Postgraduate Institute of Medical Sciences
      • Lucknow, Uttar Pradesh, India, 226003
        • King George Hospital
      • Turin, Italia, 10126
        • Hematology Citta della Salute e della Scienza di Torino
    • Firenze
      • Florence, Firenze, Italia, 50139
        • Aou Careggi
    • Roma
      • Rome, Roma, Italia, 00168
        • Fondazione Policlinico Universitario A. Gemelli - IRCCS
    • Aichi-ken
      • Nagoya, Aichi-ken, Japón, 466-8650
        • Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital
    • Gifu
      • Ōgaki, Gifu, Japón, 503-8502
        • Ogaki Municipal Hospital
    • Ibaraki
      • Tsukuba, Ibaraki, Japón, 305-8576
        • University of Tsukuba Hospital
    • Osaka
      • Moriguchi, Osaka, Japón, 570-8540
        • Matsushita Memorial Hospital
    • Tokyo
      • Shinagawa-ku, Tokyo, Japón, 141-8625
        • NTT Medical Center Tokyo
      • Amman, Jordán, 11942
        • Jordan University Hospital (JUH)
    • Pahang
      • Kuantan, Pahang, Malasia, 25200
        • Hospital Tg Ampuan Afzan
    • Sabah
      • Kota Kinabalu, Sabah, Malasia, 88586
        • Hospital Queen Elizabeth
    • Selangor
      • Ampang, Selangor, Malasia, 68000
        • Hospital Ampang
    • Nuevo León
      • Monterrey, Nuevo León, México, 64460
        • Servicio de Hematologia del Hospital Universitario de la Uanl
      • Lima, Perú, 15072
        • Clinica San Felipe
      • Bydgoszcz, Polonia, 85-168
        • Szpital Uniwersytecki Nr2 Bydgoszcz
      • Warsaw, Polonia, 02-776
        • Institute of Hematology and Transfusion Medicine
    • Pomeranian Voivodeship
      • Gdansk, Pomeranian Voivodeship, Polonia, 80-214
        • University Clinical Center Medical University of Gdansk
    • Beijing Municipality
      • Beijing, Beijing Municipality, Porcelana, 100032
        • Peking Union Medical College Hospital
      • Leeds, Reino Unido, LS9 7TF
        • St James Hospital
    • Cluj
      • Cluj-Napoca, Cluj, Rumania, 400015
        • Ion Chiricuta Oncology Institute
    • Dolj
      • Craiova, Dolj, Rumania, 200143
        • Municipal Hospital Filantropia
    • Mureș County
      • Târgu Mureş, Mureș County, Rumania, 540136
        • Targu Mures Clinical County Emergency Hospital
      • Singapore, Singapur, 119074
        • National University Hospital
      • Bangkok, Tailandia, 10330
        • King Chulalongkorn Memorial Hospital
      • Chiang Mai, Tailandia, 50200
        • Chaing Mai University
      • Khon Kaen, Tailandia, 40002
        • Faculty of Medicine Khon Kaen University
    • Changwat Songkhla
      • Hat Yai, Changwat Songkhla, Tailandia, 90110
        • Clinical Research Center, Faculty of Medicine, Prince of Songkla University
      • Changhua, Taiwán, 500-06
        • Changhua Christian Hospital
      • Hualien City, Taiwán, 97002
        • Hualien Tzu Chi Hospital
      • Kaohsiung City, Taiwán, 80756
        • Kaohsiung Medical University Hospital
      • Taichung, Taiwán, 4070
        • Taichung Veterans General Hospital (VGHTC)
      • Tainan, Taiwán, 704
        • National Cheng Kung University Hospital
      • Taipei, Taiwán, 114
        • Tri-Service General Hospital
      • Taipei, Taiwán, 100229
        • National Taiwan University Hospital
    • Central Taiwan
      • Taichung, Central Taiwan, Taiwán, 40447
        • China Medical University Hospital
    • Hunan Province
      • Taoyuan, Hunan Province, Taiwán, 33305
        • Chang Gung Memorial Hospital - Linkou Branch
      • Istanbul, Turquía (Türkiye), 34418
        • Istanbul University
      • Izmir, Turquía (Türkiye), 35100
        • Ege University

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Key Inclusion Criteria:

  1. Diagnosis of PNH confirmed by high-sensitivity flow cytometry testing with PNH granulocytes or monocytes as described in the protocol
  2. Active disease, as defined by the presence of 1 or more PNH-related signs or symptoms as described in the protocol
  3. LDH level ≥2 × ULN at the screening visit
  4. Willing and able to comply with clinic/remote visits and study-related procedures, including completion of the full series of meningococcal vaccinations required per protocol

Key Exclusion Criteria:

  1. Prior treatment with eculizumab within 3 months prior to screening, ravulizumab within 6 months prior to screening, or other complement inhibitors within 5 half-lives of the respective agent prior to screening
  2. Receipt of an organ transplant, history of bone marrow transplantation or other hematologic transplant
  3. Body weight <40 kilograms at screening visit
  4. Planned use of any complement inhibitor therapy other than study drugs during the treatment period
  5. Not meeting meningococcal vaccination requirements and, at a minimum documentation of quadrivalent meningococcal vaccination within 5 years prior to the screening visit and serotype B vaccine within 3 years prior to the screening visit as described in the protocol.
  6. Any contraindication for receiving Neisseria meningitidis vaccinations (serotypes ACWY and B).
  7. Unable to take antibiotics for meningococcal prophylaxis (if required by local ravulizumab [Cohort A] or eculizumab [Cohort B] prescribing information, where available, or national guidelines/local practice, or if necessary when administration of the first dose of the quadrivalent meningococcal vaccine [serotype ACWY] or the second dose of the serotype B meningococcal vaccine [when available] is less than 2 weeks prior to study treatment initiation) as described in the protocol
  8. Any active, ongoing infection or a recent infection requiring ongoing systemic treatment with antibiotics, antivirals, or antifungals within 2 weeks of screening or during the screening period
  9. Documented history of active, uncontrolled, ongoing systemic autoimmune diseases

Note: Other protocol-defined Inclusion/ Exclusion Criteria apply

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Cohort A

Randomized 1:1

Administered Intravenous (IV) per the protocol

Otros nombres:
  • Ultomiris
  • ALXN1210

Administered IV and subcutaneous (SC) per the protocol

Otros nombres:
  • REGN3918

Administered SC per the protocol

Otros nombres:
  • ALN-CC5
Experimental: Cohort B

Randomized 1:1

Administered IV and subcutaneous (SC) per the protocol

Otros nombres:
  • REGN3918

Administered SC per the protocol

Otros nombres:
  • ALN-CC5

Administered IV per the protocol

Otros nombres:
  • Soliris

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Percent change in lactate dehydrogenase (LDH)
Periodo de tiempo: From baseline to week 26

Cohort A

From baseline to week 26
Transfusion avoidance
Periodo de tiempo: From post-baseline day 1 through week 26

Cohort B Not requiring a red blood cell (RBC) transfusion per the protocol

From post-baseline day 1 through week 26
Adequate control of hemolysis
Periodo de tiempo: From week 8 through week 26, inclusive

Cohort B LDH ≤1.5 × ULN at each visit

From week 8 through week 26, inclusive

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Maintenance of adequate control of hemolysis
Periodo de tiempo: From week 8 through week 26, inclusive

Cohort A and B LDH ≤1.5 × ULN

From week 8 through week 26, inclusive
Breakthrough hemolysis
Periodo de tiempo: From post-baseline day 1 through week 26

Cohort A and B LDH ≥2 × ULN per the protocol

From post-baseline day 1 through week 26
Adequate control of hemolysis
Periodo de tiempo: From week 8 through week 26, inclusive

Cohort A LDH ≤1.5 × ULN

From week 8 through week 26, inclusive
Hemoglobin stabilization
Periodo de tiempo: From day 1 (post-baseline) through week 26

Cohort A and B Patients who do not receive an RBC transfusion and have no decrease in hemoglobin level per the protocol

From day 1 (post-baseline) through week 26
Normalization of LDH
Periodo de tiempo: Between week 8 through week 26, inclusive

Cohort A and B LDH ≤1.0 × ULN per the protocol

Between week 8 through week 26, inclusive
Transfusion avoidance
Periodo de tiempo: Day 1 through week 26

Cohort A and B Not requiring an RBC transfusion as per protocol algorithm based on post-baseline hemoglobin values.

Day 1 through week 26
Change in fatigue as measured by the Functional Assessment of Chronic Illness Therapy (FACIT)-Fatigue Scale
Periodo de tiempo: From baseline to week 26

Cohort A and B FACIT-Fatigue Scale is a 13-item, self-reported PRO measure assessing an individual's level of fatigue during their usual daily activities over the past week. This questionnaire is part of the FACIT measurement system, a compilation of questions measuring health-related quality of life (QoL) in patients with cancer and other chronic illnesses. The FACIT-fatigue assesses the level of fatigue using a Likert scale ranging from 0 (not at all) to 4 (very much). Scores range from 0 to 52, with higher scores indicating greater fatigue.

From baseline to week 26
Change in physical function (PF) scores on the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC-QLQ-C30)
Periodo de tiempo: From baseline to week 26

Cohort A and B EORTC-QLQ-C30 is a 30-item subject self-report questionnaire composed of both multi-item and single scales, including global health status/quality of life, functional Scales (physical, role, emotional, cognitive, and social), symptom scales (fatigue, nausea and vomiting, and pain), and 7 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea, sleep and financial difficulties). Participants rate items on a 4-point scale, with 1 as "not at all" and 4 as "very much."

From baseline to week 26
Change in global health status (GHS)/QoL scale score on the EORTC-QLC-C30
Periodo de tiempo: From baseline to week 26

Cohort A and B EORTC-QLQ-C30 is a 30-item subject self-report questionnaire composed of both multi-item and single scales, including global health status/quality of life, functional Scales (physical, role, emotional, cognitive, and social), symptom scales (fatigue, nausea and vomiting, and pain), and 7 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea, sleep and financial difficulties). Participants rate items on a 4-point scale, with 1 as "not at all" and 4 as "very much."

From baseline to week 26
Percent change in LDH
Periodo de tiempo: From baseline to week 26

Cohort B

From baseline to week 26
Rate of RBC transfused
Periodo de tiempo: Post-baseline Day 1 through week 26

Cohort A and B Per protocol algorithm

Post-baseline Day 1 through week 26
Number of units of RBC transfused
Periodo de tiempo: Post-baseline Day 1 through week 26

Cohort A and B Per protocol algorithm

Post-baseline Day 1 through week 26
Time to first LDH ≤1.5 × ULN
Periodo de tiempo: Up to Week 26

Cohort A and B

Up to Week 26
Time to first LDH ≤1.0 × ULN
Periodo de tiempo: Up to Week 26

Cohort A and B

Up to Week 26
Percentage of days with LDH ≤1.5 × ULN
Periodo de tiempo: Between week 8 and week 26, inclusive

Cohort A and B

Between week 8 and week 26, inclusive
Change in hemoglobin levels
Periodo de tiempo: From baseline to week 26

Cohort A and B

From baseline to week 26
Incidence and severity of treatment emergent serious adverse events (SAEs)
Periodo de tiempo: Up to 26 weeks

Cohort A and B

Up to 26 weeks
Incidence and severity of treatment-emergent adverse events (TEAEs) of special interest
Periodo de tiempo: Up to 26 weeks

Cohort A and B

Up to 26 weeks
Incidence and severity of TEAEs leading to treatment discontinuation
Periodo de tiempo: Up to 26 weeks

Cohort A and B

Up to 26 weeks
Change in total CH50
Periodo de tiempo: From baseline to week 26

Cohort A and B

From baseline to week 26
Percent change in total CH50
Periodo de tiempo: From baseline to week 26

Cohort A and B

From baseline to week 26
Concentration of total C5 in plasma
Periodo de tiempo: Up to 60 weeks

Cohort A and B

Up to 60 weeks
Concentrations of total pozelimab in serum
Periodo de tiempo: Up to 60 weeks

Cohort A and B

Up to 60 weeks
Concentrations of cemdisiran in plasma
Periodo de tiempo: Up to 60 weeks

Cohort A and B

Up to 60 weeks
Concentrations of total ravulizumab in serum
Periodo de tiempo: Up to 34 weeks

Cohort A

Up to 34 weeks
Concentrations of total eculizumab in serum
Periodo de tiempo: Up to 30 weeks

Cohort B

Up to 30 weeks
Incidence of treatment emergent anti-drug antibodies (ADAs) to pozelimab
Periodo de tiempo: Up to 60 weeks

Cohort A and B

Up to 60 weeks
Incidence of treatment emergent ADAs to cemdisiran
Periodo de tiempo: Up to 60 weeks

Cohort A and B

Up to 60 weeks

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Investigadores

  • Director de estudio: Clinical Trial Management, Regeneron Pharmaceuticals

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

1 de agosto de 2022

Finalización primaria (Actual)

28 de septiembre de 2026

Finalización del estudio (Actual)

29 de octubre de 2026

Fechas de registro del estudio

Enviado por primera vez

12 de noviembre de 2021

Primero enviado que cumplió con los criterios de control de calidad

12 de noviembre de 2021

Publicado por primera vez (Actual)

24 de noviembre de 2021

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

6 de noviembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

4 de noviembre de 2026

Última verificación

1 de noviembre de 2026

Más información

Términos relacionados con este estudio

Palabras clave

Otros números de identificación del estudio

  • R3918-PNH-2021
  • 2020-004486-40 (Número EudraCT)
  • 2023 (Subvención/contrato del NIH de EE. UU.)
  • 2023-509657-31-00 (Ctis)

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

SÍ

Descripción del plan IPD

All Individual Patient Data (IPD) that underlie publicly available results will be considered for sharing

Marco de tiempo para compartir IPD

When Regeneron has:

  • received marketing authorization from major health authorities (e.g., FDA, European Medicines Agency (EMA), Pharmaceuticals and Medical Devices Agency (PMDA), etc.) for the product and indication or has globally discontinued development of the product for all indications on or after April 2020 and has no plans for future development
  • made the study results publicly available (e.g., scientific publication, scientific conference, clinical trial registry),
  • the legal authority to share the data, and
  • ensured the ability to protect participant privacy.

Criterios de acceso compartido de IPD

Qualified researchers can submit a proposal for access to individual patient or aggregate level data from a Regeneron-sponsored clinical trial through Vivli. Regeneron's Independent Research Request Evaluation Criteria can be found at: https://www.regeneron.com/sites/default/files/Regeneron-External-Data-Sharing-Policy-and-Independent-Research-Request-Evaluation-Criteria.pdf

Tipo de información de apoyo para compartir IPD

  • PROTOCOLO DE ESTUDIO
  • SAVIA
  • CIF
  • CÓDIGO_ANALÍTICO
  • RSC

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

Sí

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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