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Étude du E7777 avant Kymriah pour le DLBCL R/R

2 novembre 2026 mis à jour par: Masonic Cancer Center, University of Minnesota

Essai de phase I/II utilisant E7777 pour améliorer la déplétion des lymphocytes T régulateurs avant le traitement par Tisagenlecleucel (Kymriah) pour le lymphome diffus à grandes cellules B (DLBCL) récidivant/réfractaire

This is a multicenter Phase I study to determine the maximum tolerated dose (MTD) of E7777 when given prior to cyclophosphamide/fludarabine (CY/Flu) lymphodepletion (LD) chemotherapy and an FDAapproved CAR-T product Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma (DLBCL) or follicular lymphoma grade 3 who are at a higher risk for failure of CAR-T therapy

Aperçu de l'étude

Description détaillée

E7777 is a recombinant fusion toxin consisting of full-length human IL-2 fused to the catalytic domains of diphtheria toxin. This trial is designed to augment lymphodepletion prior to CAR-T cells by administration of a targeted immunotoxin against CD25-expressing T-cells. CD25 is expressed at high levels on Tregs but also on activated effector T cells. The use of the CAR-T cell product and associated apheresis and LD chemotherapy is considered standard of care (SOC).

Type d'étude

Interventionnel

Inscription (Estimé)

30

Phase

  • Phase 2
  • La phase 1

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

    • Minnesota
      • Minneapolis, Minnesota, États-Unis, 55455
        • University of Minnesota, Masonic Cancer Center

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans et plus (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

Inclusion Criteria:

  • Diagnosis of a relapse or refractory (r/r) B cell lymphoma, for which treatment with tisagenleucel (Kymriah), Axicabtagene (Yescarta) or Lisocabtagene Maraleucel (Breyanzi) is planned, including :

  • diffuse large B-cell lymphoma (DLBCL) not otherwise specified,

  • high grade B-cell lymphoma

  • DLBCL arising from follicular lymphoma

  • Primary mediastinal B cell lymphoma

  • Follicular lymphoma grade 3B

  • And considered at high risk for progression after CAR-T therapy by meeting one or more of the following factors:

  • refractory to last line of therapy/remission of less than 12 months

  • myc over expression >40% in any prior biopsy or bcl2/bcl6 and c-myc re-arrangement (double/triple hit)

    • 2 sites of extranodal disease
  • IPI ≥ 3

  • Elevated LDH at the time of relapse

  • Has secured coverage for Kymriah, Yescarta,Breyanzi administration

  • Age 18 years or older at the time of signing the consent

  • ECOG Performance status of 0, 1, or 2

  • Adequate bone marrow reserve (may be transfusion dependent)

  • Adequate organ function at enrollment and within 14 days of planned E7777 treatment as defined in Section 4.1.7

  • Hemodynamically stable and LVEF ≥ 50% confirmed by echocardiogram or MUGA

    • Grade 1 dyspnea (CTCAE v5) and SpO2 > 91% on room air
  • Sexually active females of child-bearing potential and males with partners of child bearing potential must agree to use effective contraception during therapy

  • Provides voluntary written consent prior to the performance of any research related activities.

Exclusion Criteria:

  • Pregnant or breastfeeding - Females of childbearing potential must have a blood test or urine study within 14 days prior to study enrollment to rule out pregnancy. All females will be considered to be of childbearing potential unless they are postmenopausal (amenorrheic for at least 12 consecutive months, in the appropriate age group, and without other known or suspected cause) or have been sterilized surgically (i.e., bilateral tubal ligation, total hysterectomy, or bilateral oophorectomy, all with surgery at least 1 month before dosing)
  • Known bone marrow involvement, if history of bone marrow involvement must have a BM biopsy to rule-out current involvement
  • Prior allogeneic transplant
  • Ocular disease or complaints visual acuity impairment, color or shape distortion, or blurred vision - potential participants are required to have an ophthalmological examine as part of screening
  • Active CNS involvement by malignancy (history of CNS disease with negative CSF by flow cytometry and/or stable findings on brain MRI are acceptable)
  • Uncontrolled active hepatitis B or hepatitis C
  • Active or inactive HIV infection
  • Untreated active bacterial, viral or fungal infection (e.g. blood culture positive ≤ 72 hours prior to enrollment)
  • History of heart failure or pulmonary edema, evidence of pleural effusion or active lower extremity edema
  • Uncontrolled unstable angina and/or myocardial infarction within 3 months of enrollment
  • Investigational medicinal product within the last 7 days prior to apheresis or CAR-T infusion

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: Non randomisé
  • Modèle interventionnel: Affectation séquentielle
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Dose level 1 : E7777 at 5 mcg/kg

Single dose of E7777 given on Day -7 two days prior to the start of lymphodepleting chemotherapy

E7777 is a recombinant fusion toxin consisting of full-length human IL-2 fused to the catalytic domains of diphtheria toxin. E7777 is preferentially bound to and internalized by cells expressing the high affinity form (CD25+) of the IL-2 receptor.

Fludarabine 25 mg/m2 IV daily for 3 days. Days -5, -4 and -3. Taken in combination with Cyclophosphamide

Cyclophosphamide 250 mg/m2 IV daily for 3 days starting with the first dose of fludarabine. Days -5, -4 and -3.

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Kymriah

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Yescarta

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Breyanzi
Expérimental: Dose level 1 : E7777 at 7 mcg/kg

Single dose of E7777 given on Day -7 two days prior to the start of lymphodepleting chemotherapy

E7777 is a recombinant fusion toxin consisting of full-length human IL-2 fused to the catalytic domains of diphtheria toxin. E7777 is preferentially bound to and internalized by cells expressing the high affinity form (CD25+) of the IL-2 receptor.

Fludarabine 25 mg/m2 IV daily for 3 days. Days -5, -4 and -3. Taken in combination with Cyclophosphamide

Cyclophosphamide 250 mg/m2 IV daily for 3 days starting with the first dose of fludarabine. Days -5, -4 and -3.

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Kymriah

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Yescarta

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Breyanzi
Expérimental: Dose level 1 : E7777 at 9 mcg/kg

Single dose of E7777 given on Day -7 two days prior to the start of lymphodepleting chemotherapy

E7777 is a recombinant fusion toxin consisting of full-length human IL-2 fused to the catalytic domains of diphtheria toxin. E7777 is preferentially bound to and internalized by cells expressing the high affinity form (CD25+) of the IL-2 receptor.

Fludarabine 25 mg/m2 IV daily for 3 days. Days -5, -4 and -3. Taken in combination with Cyclophosphamide

Cyclophosphamide 250 mg/m2 IV daily for 3 days starting with the first dose of fludarabine. Days -5, -4 and -3.

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Kymriah

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Yescarta

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Breyanzi
Expérimental: MTD from phase 1

Single dose of E7777 (Maximum tolerated dose level identified in phase 1) given on Day -7 two days prior to the start of lymphodepleting chemotherapy

E7777 is a recombinant fusion toxin consisting of full-length human IL-2 fused to the catalytic domains of diphtheria toxin. E7777 is preferentially bound to and internalized by cells expressing the high affinity form (CD25+) of the IL-2 receptor.

Fludarabine 25 mg/m2 IV daily for 3 days. Days -5, -4 and -3. Taken in combination with Cyclophosphamide

Cyclophosphamide 250 mg/m2 IV daily for 3 days starting with the first dose of fludarabine. Days -5, -4 and -3.

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Kymriah

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Yescarta

Patient will receive one FDA approved CAR-T product - Tisagenlecleucel/Kymriah, Axicabtagene Ciloleucel/Yescarta, or lisocabtagene maraleucel/Breyanzi) for the treatment of relapsed/refractory diffuse large B-cell lymphoma

Autres noms:
  • Breyanzi

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Establish maximum tolerated dose (MTD)
Délai: 1 month

The primary objective of this Phase I study is to establish a maximum tolerated dose (MTD) of E7777 when given prior to standard of care CAR-T therapy product for the treatment of relapsed/refractory B-cell lymphoma who are at a higher risk for failure of CAR-T therapy.

1 month

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Number of participants experiencing adverse events
Délai: 100 days Post E7777 infusion

Number of participants experiencing adverse events related to E7777 to determine safety of the E7777

100 days Post E7777 infusion
Number of participants experiencing disease free survival (DFS)
Délai: 1 year Post E7777 infusion

Number of participants experiencing disease free survival (DFS) at 1 year

1 year Post E7777 infusion
Number of participants experiencing overall survival (OS)
Délai: 1 year Post E7777 infusion

Number of participants experiencing overall survival (DFS) at 1 year

1 year Post E7777 infusion
Number of non-relapse mortality incidents at day 100
Délai: 100 days Post E7777 infusion

Number of participants experiencing non-relapse mortality at day 100 post E7777 infusion

100 days Post E7777 infusion
Number of Grade 3 or 4 cytokine release syndrome (CRS) incidents
Délai: 28 Days Post E7777 infusion

Number of participants experiencing Grade 3 or 4 cytokine release syndrome (CRS) after CAR-T cell therapy.

28 Days Post E7777 infusion
Number of Grade 3 or 4 immune effector cell associated neurotoxicity (ICAN) syndrome incidents
Délai: 28 Days Post E7777 infusion

Number of participants experiencing Grade 3 or 4 immune effector cell associated neurotoxicity (ICAN) syndrome after CAR-T cell therapy.

28 Days Post E7777 infusion
Number of participants experiencing dose limiting toxicity events
Délai: 28 Days Post E7777 infusion

Dose Limiting Toxicity (DLT) is defined as any of the following events based on CTCAE v5 from the 1st infusion of E7777 through 21 days after the administration of CAR-T:

  • Grade 4 infusion related reaction (IRR) associated with E7777
  • Grade 4 or Grade 3 capillary leak syndrome (CLS)
  • Grade 3 or 4 liver function test abnormality that do not resolve to <Grade 2 within 5 days
  • Grade 3 or 4 non-hematologic toxicity event that occurs after the administration of E7777 and before lymphodepleting therapy
  • Any adverse event that results in a delay of lymphodepleting therapy for more than 72 hours and attributed to E7777
  • Any Grade 5 adverse event
28 Days Post E7777 infusion

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Les enquêteurs

  • Chercheur principal: Veronika Bachanova, MD, Masonic Cancer Center, University of Minnesota

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

9 juin 2021

Achèvement primaire (Estimé)

1 septembre 2027

Achèvement de l'étude (Estimé)

1 décembre 2028

Dates d'inscription aux études

Première soumission

19 avril 2021

Première soumission répondant aux critères de contrôle qualité

19 avril 2021

Première publication (Réel)

22 avril 2021

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

4 novembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

2 novembre 2026

Dernière vérification

1 novembre 2026

Plus d'information

Termes liés à cette étude

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Oui

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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