WT1 Vaccine Treatment of Patients in Remission From Acute Myeloid Leukemia (AML) or Acute Lymphoblastic Leukemia (ALL)

Phase 2 Trial of a WT1 Analog Peptide Vaccine in Patients in Complete Remission (CR) From Acute Myeloid Leukemia (AML) or Acute Lymphoblastic Leukemia (ALL)

This trial will assess the safety and efficacy of vaccination with galinpepimut-S (GPS), a WT1 peptide vaccine, in patients who are in complete remission from leukemia.

Participants will receive vaccinations with GPS every 2 weeks for 10 weeks (a total of 6 vaccinations). In the absence of disease recurrence at Week 12 and if clinically stable after the first 6 vaccinations, participants may continue to receive up to six more vaccinations every month.

Study Overview

• Status: Completed
• Conditions: Acute Myeloid Leukemia; Acute Lymphoblastic Leukemia
• Intervention / Treatment: Biological: Galinpepimut-S; Biological: GM-CSF; Other: Montanide

Detailed Description

This clinical study is conducted in patients in complete remission from acute myeloid leukemia (AML) or acute lymphoblastic leukemia (ALL). The primary objective is to assess the effect of vaccination with galinpepimut-S (GPS) on patient survival and the safety profile.

Galinpepimut-S (GPS) consists of four WT1-derived peptides which have been chosen to strengthen antigenicity, but also broaden immunogenicity over a wide range of HLA subtypes, being able to stimulate both CD8+ (MHC Class I)- and CD4+ (MHC Class II)-dependent responses. Galinpepimut-S is administered with the adjuvant Montanide and sargramostim (GM-CSF).

Participants will receive vaccinations with GPS every 2 weeks for 10 weeks (a total of 6 vaccinations). In the absence of disease recurrence at Week 12 evaluation and if clinically stable after the first 6 vaccinations, participants may continue to receive up to six more vaccinations every month. Following the last vaccination, participants will be followed regularly (every 1 to 3 months) in an outpatinet setting for up to 3 years from the first treatment date.

• Study Type: Interventional
• Enrollment (Actual): 22
• Phase: Phase 2

Expanded Access

Available outside the clinical trial. See expanded access record.

Contacts and Locations

Study Locations

• United States
  • New York
    • New York, New York, United States, 10065
      • Memorial Sloan Kettering Cancer Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Morphologic confirmation of a diagnosis of AML or ALL at MSKCC
• Patients will have completed induction therapy, achieved 1st CR and will have completed any planned postremission therapy. Patients are not candidates for allogeneic stem cell transplantation. For purposes of this study, patients who are not candidates for allogeneic stem cell transplantation shall be defined as 1) those who do not meet the eligibility criteria of an open allogeneic transplant protocol or 2) those who do not have a suitable available HLA matched donor available or 3) those who refuse to undergo stem cell transplantation or 4) those patients whose disease is characterized by "good risk" features (For AML the following cytogenetic subtypes: t(8;21), inv (16), or t(16;16), t(15;17), normal karyotype with mutated NPM1 and negative for tandem duplication of FLT-3. For ALL: T cell phenotype of any B lineage disease exclusive of t(9;22) or t(4;11) in whom allogenic stem cell transplantation in 1st CR would not be offered as standard of care.
• Alternatively, those patients greater than or equal to 60 years of age who have achieved 1st CR and in whom no further postremission chemotherapy is planned may be enrolled
• Patients must have documented WT1 + disease. For purpose of this study, this is defined as detectable presence of any WT1 transcript via RT-PCR on a bone marrow performed at MSKCC within 4 weeks prior to the administration of the first dose of vaccine.
• Patients must be within 2 years of achieving CR following chemotherapy
• At least 4 weeks must have elapsed between the patient's last chemotherapy or radiation treatment and the first vaccination.
• Age ≥ 18 years
• Karnofsky performance status ≥ 50%
• Hematologic parameters:

Absolute neutrophil count (ANC) ≥ 1000/μL

• Platelets > 50 k/μL

Biochemical parameters:

• Total bilirubin ≤ 2.0 mg/dL AST and ALT ≤ 2.5 x upper limits of normal
• Creatinine ≤ 2.0 mg/dL

Exclusion Criteria:

• Pregnant or lactating women
• Patients with documented evidence of leptomeningeal disease
• Patients who have undergone autologous or allogeneic stem cell transplantation
• Patients with active infection requiring systemic antimicrobials
• Patients taking systemic corticosteroids
• Patients with serious unstable medical illness

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Galinpepimut-S + Montanide + GM-CSF; Galinpepimut-S (GPS) and Montanide (in a 1 mL emulsion) are administered subcutaneously (s.c.) Q2W on weeks 0, 2, 4, 6, 8, and 10. GM-CSF (70 μg) are administered s.c. one to two days before and on the day of GPS/Montanide administration. Participants with no recurrence after Week 12 and who are clinically stable may be eligible to receive up to 6 additional monthly vaccinations.

Biological: Galinpepimut-S; Galinpepimut-S admixed with the adjuvant Montanide following specified schedule; Other Names: SLS-001; GPS; Biological: GM-CSF; subcutaneous injection; Other Names: sargramostim; Other: Montanide; adjuvant

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Overall Survival	OS at 3 years, measured from first treatment with GPS to patient's survival status at 3 years or more	3 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Progression-free Survival	Time to PFS measured from first administration of GPS to relapse or death from any cause	5 years and 8 months

Collaborators and Investigators

• Sponsor: Sellas Life Sciences Group
• Collaborators: Memorial Sloan Kettering Cancer Center
• Investigators: Principal Investigator: Peter Maslak, MD, Memorial Sloan Kettering Cancer Center

Publications and helpful links

General Publications

• Maslak PG, Dao T, Bernal Y, Chanel SM, Zhang R, Frattini M, Rosenblat T, Jurcic JG, Brentjens RJ, Arcila ME, Rampal R, Park JH, Douer D, Katz L, Sarlis N, Tallman MS, Scheinberg DA. Phase 2 trial of a multivalent WT1 peptide vaccine (galinpepimut-S) in acute myeloid leukemia. Blood Adv. 2018 Feb 13;2(3):224-234. doi: 10.1182/bloodadvances.2017014175.

Helpful Links

• Memorial Sloan Kettering Cancer Center

Study record dates

Study Major Dates

• Study Start (Actual): January 14, 2011
• Primary Completion (Actual): September 30, 2016
• Study Completion (Actual): September 30, 2016

Study Registration Dates

• First Submitted: December 21, 2010
• First Submitted That Met QC Criteria: December 22, 2010
• First Posted (Estimated): December 24, 2010

Study Record Updates

• Last Update Posted (Actual): November 19, 2024
• Last Update Submitted That Met QC Criteria: November 13, 2024
• Last Verified: November 1, 2024

More Information

Terms related to this study

• Keywords: overall survival; complete remission; SLS-001; WT1 analog peptide vaccine; Wilms Tumor-1 protein; Galinpepimut-S; 10-143
• Additional Relevant MeSH Terms: Neoplasms; Immune System Diseases; Neoplasms by Histologic Type; Hematologic Diseases; Lymphatic Diseases; Lymphoproliferative Disorders; Immunoproliferative Disorders; Leukemia; Leukemia, Myeloid; Leukemia, Myeloid, Acute; Leukemia, Lymphoid; Precursor Cell Lymphoblastic Leukemia-Lymphoma; Immunologic Factors; Physiological Effects of Drugs; Adjuvants, Immunologic; Monatide (IMS 3015); Sargramostim
• Other Study ID Numbers: 10-143

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO