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Completed

NCT Number: NCT03862833

Zoledronic Acid in Combination With Interleukin-2 to Expand Vγ9Vδ2 T Cells After T-replete Haplo-identical Allotransplant

Patients receiving haplo-SCT are at high-risk of relapse. Vγ9Vδ2 T cells exhibit is a well-known population able to exert cytotoxicity toward a large range of tumor in vitro or in vivo. Activating and expanding Vγ9Vδ2 T cells early after haplo-SCT by using a combination of Zoledronic acid and low-dose interleukine (IL) -2 may be of benefit for patients by reducing incidence of relapse. The optimal dose of IL-2 to use remains to be determined.

This will be a Phase 1 3+3 escalation study. Three to 15 patients are planned. It will be proposed to Patients who refuse to participate to have samples collected until day +70 to study immune and gamma/delta T cells reconstitutions after haplo-transplant.

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Key information

Conditions

Hematopoietic Stem Cell Transplantation

Age range

18 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Nantes Uh

Nantes, France

About this study

Zoledronic acid will be administered as a single dose according to marketing and regulatory authorization at the dose of 4 mg over 15 min intravenously at day+15 post-transplant. Zoledronic acid infusion must be stopped in case of grade 3/4 adverse events during infusion.

IL-2 will be administered at a unique low-dose level 5 days per week for 4 consecutive weeks from Monday to Friday subcutaneously . IL-2 has already marketing authorization for various indications.

Three IL2 levels will be tested:

Level 1: 2 millions UI/Infusion Level 2: 4 millions UI/Infusion Level 3: 6 millions UI/Infusion Zoledronic acid and IL2 have to start at day+15 if it is a Monday or the first Monday following day+15 in order to avoid administration on week-end.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age: 18-70 years old
  • Patients with a hematological disease eligible for a haplo-SCT using the Baltimore regimen as conditioning regimen (Luznik, BBMT, 2008) (See 5.1.2)
  • Patients with no HLA matched sibling or unrelated donors
  • ECOG <=2
  • Signed informed consent
  • Patient affiliated to or beneficiary of the National Health Service
  • Patients previously transplanted are eligible to the study

Exclusion criteria

  • Patients with a HLA matched sibling or unrelated donor
  • Active uncontrolled infections
  • HIV positive, active Hepatitis B or C
  • Childbearing or child-breastfeading women
  • Women or men without effective contraceptive barrier if needed
  • Left ventricular ejection fraction < 50% with no previous severe cardiopathy
  • Respiratory insufficiency defined as DLCO <40% of the corrected value
  • Creatinine clearance <50 ml/min
  • Serum bilirubin >2.5 or transaminases >5 fold of normal value except if due to the hematological disease
  • Previous or concurrent second malignancy except for adequately treated basal cell carcinoma of the skin, curatively treated in situ carcinoma of the cervix, curatively treated solid cancer, with no evidence of disease for at least 2 years
  • Any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule
  • Participation at the same time in another study in which investigational drugs are used
  • Absence of written informed consent
  • Contra-indication to Zoledronic acid: known hypersensitivity to Zoledronic acid or other bisphosphonate or Zoledronic acid formulation (excipients)
  • Recent or programmed dental care
  • Contra-indication to IL-2: known hypersensitivity to IL-2 or IL-2 formulation (excipients)
  • No previous ou current use of zoledronic acid

Treatment and study plan

IL2

Drug

Three IL2 levels will be tested:

Level 1: 2 millions UI/Infusion Level 2: 4 millions UI/Infusion Level 3: 6 millions UI/Infusion 4 weeks, 5 days per week from day + 15 post graft to day + 40

Zoledronic acid

Drug

4 mg at day +15 post graft

Primary outcomes

  1. determine the maximum tolerated dose (MTD) of early administration of increasing doses of low-dose IL-2 in combination with a fixed dose of Zoledronic acid after haplo-SCT

    Time frame: 28 days after the last injection of IL2

    A dose-limiting toxicity (DLT) will be defined as:

    • non-hematological toxicity of grade 4, including grade 4 acute GVHD 4.
    • non-hematological toxicity of grade 3 non-reversible for > 7 days or reappearance of the same grade 3 after reintroduction of IL2 in case of return to at least one grade 1.
    • an acute GVHD grade 2-3 for > 7 days or reappearance of GVHD grade 2-3 acute GVHD after reintroduction of IL2 if at least grade 1 acute GVHD is restored.
    • a reappearance of a grade 3/4 IL2 allergic reaction after reintroduction of IL2 in the event of a return to at least grade 1 after the occurrence of an allergic reaction of grade 3/4 IL2 when of the administration.
    • grade 4 pancytopenia with hypocellular bone marrow (no disease detection) for > 4 weeks after the last administration of IL2.

Secondary outcomes

  1. Engraftment

    Time frame: day 30, 60,90/100, 6 months and 1 year post-transplant

    Concentration of sustained neutrophil recovery (>500 Giga/L) with full or mixed donor chimerism documentation

  2. Chimerism (mixed, full or uncompleted)

    Time frame: day 30, 60,90/100, 6 months and 1 year post-transplant

    Evaluation of CD3+ T-cell chimerism

  3. overall survival

    Time frame: last patient follow up : 36 months

    the time from day 0 of allo-SCT to death or last follow-up for surviving patients

  4. disease-free survival

    Time frame: last patient follow up : 36 months

    time from day 0 of allo-SCT to time without evidence of relapse or disease progression censored at the date of death or last follow-up.

  5. relapse rate

    Time frame: last patient follow up : 36 months

    any event related to re-occurrence of the disease.

  6. Non relapse mortality

    Time frame: day 100 post transplant and one year post-transplant

    death from any cause without previous relapse or progression

  7. Incidence of acute GVHD

    Time frame: day 100 post transplant one year post-transplant

    Acute GVHD: Harris AC, Young R, Devine S, Hogan WJ, Ayuk F, Bunworasate U, et al. International, Multicenter Standardization of Acute Graft-versus-Host Disease Clinical Data Collection: A Report from the Mount Sinai Acute GVHD International Consortium. Biol Blood Marrow Transplant. 2016 Jan;22(1):4-10.

  8. Hematologic and immune reconstitutions post-transplant

    Time frame: before the graft and at days 15, 22, 29, 36, 45, 70

    median time for neutrophils recovery (first day with >0.5 Giga/L for three consecutive days) and platelets recovery >20, 50 and 100 Giga/L; T CD3, CD4, CD8, NK, B, Tregs, g/d T cells

  9. Complete remission (CR) rate for lymphoma patients

    Time frame: day 100 post transplant

    Cheson criteria

  10. g/d T cells detection after haplo-SCT

    Time frame: before the graft and at days 15, 22, 29, 36, 45, 70

    Evaluation of T CD3, CD4, CD8, NK, B, Tregs, g/d T cells

  11. Perturbation of ionic metabolism

    Time frame: before the graft and at days 15, 22, 29, 36, 45, 70

    Evaluation of Vitamin D, Ca, Ph, Na, K, serum creatinine, bilirubin (direct and total), alkaline phosphatase, gammaGT, ALAT, ASAT

  12. Detection of dysthyroid disease

    Time frame: before the graft and at day 70

    Dosage of T3 T4 TSH

  13. Incidence of acute and chronic GVHD

    Time frame: one year post-transplant

    Chronic GVHD: Filipovich AH, Weisdorf D, Pavletic S, Socie G, Wingard JR, Lee SJ, et al. National Institutes of Health consensus development project on criteria for clinical trials in chronic graft-versus-host disease: I. Diagnosis and staging working group report. Biol Blood Marrow Transplant. 2005 Dec;11(12):945-56.

Sponsors and collaborators

Lead sponsor

Nantes University Hospital

Other

Registry information

Official study title

Phase 1 Dose Escalation of Early Infusion of Zoledronic Acid in Combination With Increasing Low-dose of Interleukin-2 in Order to Expand Vγ9Vδ2 T Cells After T-replete Haplo-identical Allogeneic Stem Cell Transplantation (SCT)

Acronym: HILDEGAZ

Important dates

Study start
2019
Primary completion
2023
Study completion
2023
First posted
Mar 5, 2019
Registry last updated
Oct 6, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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