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Single-arm Study of IgPro20 in Adults With Secondary Immune Deficiencies Due to Hematologic Malignancies Treated With B-cell Targeting Chimeric Antigen Receptor T-cell and T-cell Redirecting Therapies

10 de junio de 2026 actualizado por: CSL Behring

A Phase 3, Prospective, Open-label, Multicenter, Single-arm Study to Investigate the Efficacy, Safety, and Pharmacokinetics of IgPro20 in Subjects With Secondary Immune Deficiency Due to Hematologic Malignancies Treated With B-cell Targeting Chimeric Antigen Receptor T-cell and T-cell Redirecting Therapies

This is a prospective, multicenter, open-label, single-arm study to assess the efficacy, safety, and pharmacokinetics (PK) of IgPro20 in adults with hematologic malignancies treated with B-cell targeting Chimeric antigen receptor T-cell (CAR T-cell) and T-cell redirecting therapies (such as T-cell engager bispecific antibody [TCE BsAb] therapy). The primary objective is to demonstrate that true annualized rate of serious bacterial infection (SBIs) is less than (<) 1.0.

This study includes two cohorts:

  1. Loading Cohort: Participants with serum immunoglobulin G (IgG) < 500 milligrams per deciliter (mg/dL) at Screening, with or without ongoing immunoglobulin replacement therapy (IgRT) during Screening, who must have received five doses of IgPro20 during the Initial Treatment Period.
  2. Maintenance-only Cohort: Participants with serum IgG greater than or equal to (≥) 500 mg/dL and ongoing IgRT at Screening, who must have received one dose of IgPro20 during the Initial Treatment Period.

Descripción general del estudio

Estado

Aún no reclutando

Condiciones

Intervención / Tratamiento

Tipo de estudio

Intervencionista

Inscripción (Estimado)

63

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.

Estudio Contacto

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

  • Adulto
  • Adulto Mayor

Acepta Voluntarios Saludables

No

Descripción

Inclusion Criteria:

  • Participants greater than or equal to (≥) 18 years of age at the time of providing written informed consent.
  • Confirmed diagnosis of B-cell hematologic malignancy (ie, Multiple myeloma [MM], Chronic lymphocytic leukemia [CLL], Non-Hodgkin lymphoma [NHL], or BALL) according to applicable diagnostic criteria.

  • Participants treated with Chimeric antigen receptor T-cell (CAR T-cell) therapy or TCE BsAb and are:

    1. At least 2 months after receipt of an approved CAR T-cell therapy for the B-cell hematologic malignancy at the time of Screening, or
    2. At least 1 month after initiation of an approved TCE BsAb therapy for the B-cell hematologic malignancy at the time of Screening and expected to continue with the therapy.

  • Documented partial or complete response to CAR T-cell or TCE BsAb therapy based on applicable response criteria at the time of Screening:

    1. CLL based on International Workshop on Chronic Lymphocytic Leukemia response criteria
    2. MM based on International Myeloma Working Group response criteria
    3. NHL based on Lugano Classification criteria
    4. B-ALL based on National Comprehensive Cancer Network guidelines
  • IgG level (excluding paraprotein, if relevant) at Screening:

If participant has ongoing IgRT (intravenous immunoglobulin [IVIG] or subcutaneous immunoglobulin [SCIG]) for SID during Screening, then any IgG level at Screening is acceptable for enrollment. Participants with IgG less than (<) 500 milligrams per deciliter (mg/dL) are assigned to the Loading Cohort, participants with IgG ≥ 500 mg/dL are assigned to the Maintenance-only Cohort.

  • IgG level (excluding paraprotein, if relevant) at Screening:

If participant does not have ongoing IgRT (IVIG for > 8 weeks or SCIG for > 2 weeks) for SID during Screening and are not expected to receive IgRT during Screening, then IgG < 500 mg/dL is required for enrollment (participant is assigned to the Loading Cohort)

Exclusion Criteria:

  • Documented history of diseases for which IgRT may be indicated: primary immune deficiency, chronic inflammatory demyelinating polyneuropathy, Guillain-Barré syndrome, immune thrombocytopenia, Kawasaki disease, Lambert-Eaton myasthenic syndrome, multifocal motor neuropathy, myasthenia gravis, stiff person syndrome, solid organ transplant, and rejection prior to Screening.
  • History of thromboembolic event (TEE) within 6 months before Screening.
  • Eastern Cooperative Oncology Group performance status > 1.
  • Presence of any systemic active infection at Screening.
  • Participants on any prohibited therapies, including anti-infective treatments.
  • Absolute neutrophil count < 1 × 10*9/L (Common Terminology Criteria for Adverse Events [CTCAE] Grade 3 or worse), unless proven to be due to the underlying disease and raised above the limit by granulocyte colony-stimulating factor.
  • Concurrent participation in other interventional clinical studies. Note: a participant may be enrolled if their participation in the other study will not jeopardize their safety and / or the scientific validity of this study (eg, an observational study, a long-term safety follow-up of an interventional study, diagnostic device studies, phase 4 studies with medicines used within their approved indication); the investigator may consult with the medical monitor.

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: N / A
  • Modelo Intervencionista: Asignación de un solo grupo
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: IgPro20

In the loading cohort, participants will receive a loading dose of IgPro20 subcutaneously (SC) once daily for five consecutive days during the first week (Initial Treatment Period), followed by SC infusion weekly dosing for a total treatment duration of 52 weeks.

In the maintenance-only cohort, participants will receive weekly doses of IgPro20 SC infusion for a total treatment duration of 52 weeks.
Biológico: IgPro20
IgPro20 infusion administered SC.
Otros nombres:
  • Immune Globulin Subcutaneous (Human) 20% Liquid

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Number of Serious Bacterial Infections (SBIs) per Participant
Periodo de tiempo: Up to Month 12
The SBIs includes: bacteremia / sepsis, bacterial meningitis, osteomyelitis / septic arthritis, bacterial pneumonia, and visceral abscess.
Up to Month 12

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Number of Infections per Participant
Periodo de tiempo: Up to Month 12
Up to Month 12
Number of Common Terminology Criteria for Adverse Events (CTCAE) >= Grade 3 Infections per Participant
Periodo de tiempo: Up to Month 12
As per CTCAE, Grade 3 is defined as Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activities of daily living (self-care activities of daily living refer to bathing, dressing and undressing, feeding self, using the toilet, taking medications, and not bedridden). Grade 4: Life-threatening consequences; urgent intervention indicated and Grade 5: Death related to adverse event. Infections of CTCAE Grade 3 or worse will be reported.
Up to Month 12
Number of Days Hospitalized due to Infections
Periodo de tiempo: Up to Month 12
Up to Month 12
Number of Days With Anti-infectives Use
Periodo de tiempo: Up to Month 12
Up to Month 12
Number of Infection-related Deaths and Complications
Periodo de tiempo: Up to Month 12
Up to Month 12
Number of Infection-related Requirement for Intravenous (IV) Therapy
Periodo de tiempo: Up to Month 12
Up to Month 12
Number of Infection-related Requirement for Hospitalization per Participant
Periodo de tiempo: Up to Month 12
Up to Month 12
Number of Participants with Treatment-emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), Adverse Events of Special Interest (AESIs), Infusion Site Reaction and Other Local Reactions
Periodo de tiempo: Up to Month 12

In this study, thromboembolic events are treated as AESIs.

The following 3 narrow standardized Medical Dictionary for Regulatory Activities (MedDRA) queries are used for TEE evaluation:

  • Embolic and thrombotic events, arterial
  • Embolic and thrombotic events, venous
  • Embolic and thrombotic events, vessel type unspecified, and mixed arterial and venous.
Up to Month 12
Trough Concentrations of Serum IgG
Periodo de tiempo: Up to Week 56
Up to Week 56
Area Under the Serum Concentration Time Curve (AUC) for IgG From Timepoint Zero to tau (AUC[0-t])
Periodo de tiempo: Before IgPro20 dosing at Week 52 and up to Week 54 (after the last dose of IgPro20)
Before IgPro20 dosing at Week 52 and up to Week 54 (after the last dose of IgPro20)
Maximal Serum Concentration (Cmax) of IgG
Periodo de tiempo: Before IgPro20 dosing at Week 52 and up to Week 54 (after the last dose of IgPro20)
Before IgPro20 dosing at Week 52 and up to Week 54 (after the last dose of IgPro20)
Time to Maximal Serum Concentration (Tmax) of IgG
Periodo de tiempo: Before IgPro20 dosing at Week 52 and up to Week 54 (after the last dose of IgPro20)
Before IgPro20 dosing at Week 52 and up to Week 54 (after the last dose of IgPro20)

Colaboradores e Investigadores

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

Patrocinador

CSL Behring

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 (Estimado)

25 de julio de 2026

Finalización primaria (Estimado)

16 de febrero de 2029

Finalización del estudio (Estimado)

16 de febrero de 2029

Fechas de registro del estudio

Enviado por primera vez

10 de junio de 2026

Primero enviado que cumplió con los criterios de control de calidad

10 de junio de 2026

Publicado por primera vez (Actual)

15 de junio de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

15 de junio de 2026

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

10 de junio de 2026

Última verificación

1 de marzo de 2026

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • IgPro20_3013
  • 2026-525626-38-00 (Identificador de registro: EU CT Number)

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

SÍ

Descripción del plan IPD

CSL will consider on a case-by-case basis requests to share Individual Patient Data (IPD) with external bona-fide, qualified scientific and medical researchers. For information on the process and requirements for submitting a voluntary data sharing request for IPD, please contact CSL at clinicaltrials@cslbehring.com.

Marco de tiempo para compartir IPD

Requests for IPD will generally be considered once review by major regulatory authorities (ie FDA, EMA) is complete and the primary publication is available.

Criterios de acceso compartido de IPD

Proposed research should seek to answer a previously unanswered important medical or scientific question.

Applicable country specific privacy and other laws and regulations will be considered and may prevent sharing of IPD.

If the request is approved and the researcher has executed an appropriate data sharing agreement, IPD that has been appropriately anonymized will be available.

Tipo de información de apoyo para compartir IPD

  • PROTOCOLO DE ESTUDIO
  • SAVIA

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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