Open Label NK Cell Infusion (FATE-NK100) With Subq IL-2 in Adults With AML

Phase 1

Completed

• Conditions: Refractory Acute Myelogenous Leukemia; Relapsed Acute Myelogenous Leukemia
• Interventions: Biological: FATE-NK100

• Registration Number: NCT03081780
• Lead Sponsor: Masonic Cancer Center, University of Minnesota

Brief Summary

This is a Phase I open-label dose escalation study of a single infusion of FATE-NK100 and a short course of subcutaneous interleukin-2 (IL-2) administered after lymphodepleting chemotherapy (CY/FLU) in subjects with refractory or relapsed acute myelogenous leukemia (AML). FATE-NK100 is a natural killer (NK) cell product that is enriched for NK cells with an "adaptive", or human cytomegalovirus (CMV)-induced, phenotype. The NK cell product is comprised of peripheral blood (PB) leukocytes sourced from a related donor (HLA-haploidentical or better but not fully HLA-matched) that is seropositive for cytomegalovirus (CMV+), and enriched for adaptive NK cells by depletion of CD3+ (T-lymphocytes) and CD19+ (B-lymphocytes) cells followed by ex-vivo culture expansion.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2017-03-06
• Study First Submitted QC: 2017-03-10
• Study First Posted: 2017-03-16
• Study Start: 2017-04-27
• Primary Completion: 2020-08-01
• Study Completion: 2020-12-01
• Status Verified: 2021-03
• Last Update Submitted: 2021-03-10
• Last Update Posted: 2021-03-12

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 6

Inclusion Criteria

• ≥18 but ≤ 70 years of age

• Diagnosis of acute myeloid leukemia (AML) and meets one of the following disease criteria:

  * Primary induction failure:

  ** De Novo AML: no CR after 2, 3 or 4 induction attempts with high dose chemotherapy

  • Secondary AML (from MDS or treatment related): no CR after 1, 2 or 3 cycles of high dose chemotherapy

    • Relapsed:

  • Not in CR after 1 or 2 cycles of standard re-induction therapy

  • Relapse diagnosed at the time of the 6 months post-HCT standard of care follow-up or later (i.e. based on bone marrow biopsy performed Day +170 or later) and without evidence of graft versus host disease (GVHD)

    • For patients > 60 years of age, the minimum of 1 cycle of standard chemotherapy is not required.

• Available HLA-matched or better but not fully HLA-matched (2/4 or 3/4 antigens) related donor (aged 18 to 75 years) with donor/recipient match based on a minimum of intermediate resolution DNA based Class I typing of the A and B locus who is CMV seropositive.

• Karnofsky Performance Status ≥ 60%

• Adequate organ function within 14 days of study registration (28 days for pulmonary and cardiac) defined as:

  • Creatinine: Estimated glomerular filtration rate (eGFR) ≥ 50 mL/min/1.73m^2 per current institutional calculation formula
  • Hepatic: AST and ALT ≤ 3 x upper limit of institutional normal
  • Pulmonary Function: oxygen saturation ≥ 90% on room air; PFT's required only if symptomatic or prior known impairment - must have pulmonary function >50% corrected DLCO and FEV1
  • Cardiac Function: LVEF ≥ 40% by echocardiography or MUGA
  • No symptomatic active conduction system abnormalities

• Able to be off prednisone or other immunosuppressive medications for at least 3 days prior to FATE-NK100 cell infusion (excluding preparative regimen premedications)

• Sexually active females of child bearing potential and males with partners of child bearing potential must agree to use effective contraception during therapy and for 4 months after completion of therapy

• Voluntary written consent prior to the performance of any research related procedures

Arm Specific Inclusion Criteria

High-Risk aGVHD (ARM 1):

• Pediatric or adult (ages 0-76 years) HCT recipients with high-risk acute GVHD, as determined either by the refined MN acute GVHD risk score [28]: http://z.umn.edu/MNAcuteGVHDRiskScore OR high risk on the basis of blood biomarkers (Ann Arbor Score 3) [31]. Patients in this arm must start treatment within the first 7 days after onset of high-risk aGVHD.

or

Steroid- Dependent aGVHD (ARM 2A):

• Pediatric or adult (ages 0-76 years) HCT recipient with grade II-IV steroid-dependent acute GVHD, defined as any one of the following: Flare of acute GVHD of at least grade II/IV severity within 8 weeks of tapering down or (off of) immunosuppression for acute GVHD, with the flare occurring on ≤0.5 mg/kg prednisone. This can include late-onset aGVHD and overlap syndrome.

or

Steroid-Refractory aGVHD (ARM 2B):

• Pediatric or adult (ages 0-76 years) HCT recipient with grade II-IV steroid refractory acute GVHD, defined as any one of the following:

• No response of acute GVHD after at least 4 days of systemic corticosteroids of at least 2 mg/kg prednisone or equivalent
• Progression of acute GVHD within 3 days of systemic corticosteroids of at least 2 mg/kg prednisone or equivalent
• Failure to improve to at least grade II acute GVHD after 14 days of systemic corticosteroids, with initial doses of at least 2 mg/kg prednisone or equivalent
• Flare of acute GVHD of at least grade II/IV severity while on steroids at a dose >0.5/mg/kg/day. This can include late-onset aGVHD and overlap syndrome.

Exclusion Criteria

• Myocardial Infraction (MI) within the previous 6 months
• Acute leukemias of ambiguous lineage
• Pregnant or breastfeeding - The agents used in this study include those that fall under Pregnancy Category D - have known teratogenic potential. Women of child bearing potential must have a negative pregnancy test at screening
• History of or known active CNS involvement with AML
• Active autoimmune disease requiring systemic immunosuppressive therapy
• History of severe asthma and currently on chronic systemic medications (mild asthma requiring inhaled steroids only is eligible)
• New or progressive pulmonary infiltrates on screening chest X-ray or chest CT scan unless cleared for study by Pulmonary. Infiltrates attributed to infection must be stable/improving (with associated clinical improvement) after 1 week of appropriate therapy (4 weeks for presumed or documented fungal infections).
• Uncontrolled bacterial, fungal or viral infections including HIV-1/2 or active hepatitis C/B - chronic asymptomatic viral hepatitis is allowed
• Received any investigational agent within the 14 days before the start of study treatment (1st dose of fludarabine)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
FATE NK-100	FATE-NK100	-

Primary Outcome Measures

Name	Time	Method
Maximum tolerated dose (MTD)	3 months	Maximum FATE-NK100 dose which could be given to 3 participants such that not more than 1 participant experienced a DLT.

Secondary Outcome Measures

Name	Time	Method
Clinical activity by CR/CRp leukemia clearance	Day +42	Incidence of CRp defined as leukemia clearance (≤5%marrow blasts and no circulating peripheral blasts)
In vivo expansion of NK cells	Day +14	Incidence of in vivo expansion (≥ 100 donor derived NK cells per uL blood) of NK cells
Leukemia free survival (LFS)	1 year	Incidence of Leukemia free survival (LFS)
Clinical activity by CR/CRp neutrophil recovery	Day +42	Incidence of CRp defined as neutrophil recovery (ANC \>500 cells/microliter) but with incomplete platelet recovery
Minimal residual disease (MRD) by flow cytometry	up to Day 28	Incidence of minimal residual disease (MRD) clearance by flow cytometry after NK Cell infusion
Overall survival (OS)	1 year	Incidence of overall survival (OS)
Treatment Related Mortality (TRM)	6 months	Incidence of treatment related mortality (TRM)
Minimal residual disease (MRD) by bone marrow morphology	up to Day 28	Incidence of minimal residual disease (MRD) clearance by bone marrow morphology after NK Cell infusion

Trial Locations

Locations (1)

University of Minnesota, Masonic Cancer Center; 🇺🇸 Minneapolis, Minnesota, United States