Study of Mana 312 (Multi Tumor-Associated Antigen T Cells) in Adults With AML/MDS After HSCT

AML/MDS Clinical Trial

Official title:

Ph 1 Study of Escalating Single & Multiple Doses of Mana 312 (Multi Tumor-Associated Antigen T Cells) Administered to Adult Subjects With Acute Myeloid Leukemia or Myelodysplastic Syndrome After Allogeneic Hematopoietic Stem Cell Transplant

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT04679194
• Other study ID #: ManaTx-1001
• Status: Terminated
• Phase: Phase 1
• Start date: December 8, 2020
• Est. completion date: March 28, 2023

Study information

• Verified date: June 2023
• Source: Mana Therapeutics
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This is a Phase 1, open-label, non-randomized, single and multiple dose escalation study designed to evaluate the safety and preliminary efficacy of administering Mana 312 to subjects with AML/MDS after allogeneic HSCT.

Description:

This is a Phase 1, open-label, non-randomized, single and multiple dose escalation study designed to evaluate the safety and preliminary efficacy (prevention of, or treatment of relapse) of administering Mana 312 to subjects with AML/MDS after allogeneic HSCT. The study will evaluate the safety, tolerability, pharmacokinetics, and preliminary antitumor activity of single and multiple doses of Mana 312. Each cycle of administration of Mana 312 will be 28 days.

In the Escalation Cohorts, subjects with low, intermediate, and adverse/high risk of relapse will be enrolled using a modified 3+3 design. Upon completion of Cycle 1, subjects not experiencing dose-limiting toxicity (DLT) may continue receiving their assigned Mana 312 dose every 28 days for an additional 2 doses unless the subject experiences progressive disease (PD), exhausts their supply of Mana 312, experiences intolerable side effects, is removed by the Investigator, withdraws consent, or the study is terminated. After Cohort 1 has been completed (i.e., a decision has been made to proceed to Cohort 2), enrollment will be limited to subjects with high-risk of relapse AML/MDS (see Inclusion Criterion #4b) until the RP2D is determined).

In the Expansion Cohort, only subjects with high risk of relapse AML/MDS will be enrolled using the RP2D of Mana 312. Subjects in the Expansion Cohort will receive Mana 312 at the time of relapse or at 1 year after HSCT, whichever is first. Subjects not experiencing dose-limiting toxicity (DLT) may continue receiving their assigned Mana 312 dose every 28 days for an additional 2 doses unless the subject experiences progressive disease (PD), exhausts their supply of Mana 312, experiences intolerable side effects, or the study is terminated.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 11
• Est. completion date: March 28, 2023
• Est. primary completion date: March 28, 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Select Inclusion Criteria:

1. Subject is =18 years of age on the day Informed Consent is signed and dated.

2. Subject must have received only one allogeneic HSCT from a related or unrelated donor prior to administration of Mana 312.

3. Subject has a donor who has agreed to donate leukocytes for manufacture of Mana 312 and who is the same donor who provided cells for the subject's current HSCT.

4. a. Prior to HSCT, for Escalation Cohort 1, subject has AML/MDS b. Prior to HSCT, for Escalation Cohorts after Cohort 1 and for the Expansion Cohort, a subject must have high risk of relapse AML/MDS

5. Mana 312 product is available

The following Inclusion Criteria apply only during the Pre-Infusion Screening Phase, prior to the time of the planned first infusion of Mana 312.

6. Subject has Eastern Cooperative Oncology Group (ECOG) performance status = 3 or Karnofsky/Lansky score of = 50.

7. Subjects in the Expansion Cohort must have a relapse of AML/MDS (MRD+ or morphologic relapse)

8. Subject has adequate organ function

Select Exclusion Criteria:

1. Subject has received antibody that affects T-cell number or function

2. Subject has received a donor lymphocyte infusion (DLI) for the current HSCT.

3. Evidence of GVHD = Grade 2 in any organ system, or active bronchiolitis obliterans syndrome, sclerotic GVHD, or symptomatic serositis.

4. Subject has undergone major surgery (excluding minor procedures, eg, placement of vascular access, gastrointestinal/biliary stent, apheresis, or biopsy) < 21 days prior to the first planned infusion of Mana 312.

5. Subject has an active and clinically relevant infection

6. Subject has symptomatic or uncontrolled brain metastases, leptomeningeal disease, or spinal cord compression (radiation therapy to local site for disease control is allowed if = 14 days prior to Screening and all AE from radiation therapy have resolved to = Grade 1 prior to the planned first Mana 312 infusion).

7. Subject has any other medical condition not listed above or social condition that, in the opinion of the Investigator, might place the subject at increased risk, adversely affect compliance, or confound safety or other clinical study data interpretation.

Related Conditions & MeSH terms

• AML/MDS

Intervention

Biological:
• Mana 312
Mana 312 is a cellular product comprised of expanded T cells derived from allogeneic donor leukocytes that have been stimulated with monocyte derived dendritic cells pulsed with tumor-associated antigen (TAA) peptide mixes for 3 antigens: Wilms Tumor gene 1 (WT 1), the preferentially expressed antigen of melanoma (PRAME), and Survivin. Each Mana 312 product is specifically matched for an individual subject and will be manufactured from leukocytes from the same donor who provided stem cells to that subject for their current allogeneic hematopoietic stem cell transplantation (HSCT).

Locations

Country	Name	City	State
United States	Northside Hospital - Atlanta	Atlanta	Georgia
United States	Texas Transplant/St David's South Austin	Austin	Texas
United States	Colorado Blood Cancer Institute	Denver	Colorado
United States	University of Kansas Cancer Center	Kansas City	Kansas
United States	Tennessee Oncology	Nashville	Tennessee
United States	Vanderbilt - Ingram Cancer Center	Nashville	Tennessee
United States	Memorial Sloan Kettering Cancer Center	New York	New York
United States	Texas Transplant/Methodist Hospital	San Antonio	Texas

Sponsors (1)

Lead Sponsor	Collaborator
Mana Therapeutics

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Characterize the pharmacokinetics (PK) by measurement of Mana 312 cell counts	Determine Mana 312 cell counts	6 months
Other	Characterize the pharmacokinetics (PK) by measurement of antidrug antibodies (ADAs)	Measure presence or absence of antidrug antibodies to Mana 312	6 months
Other	Characterize the anti-drug antibody (ADA) response to Mana 312.	Detect presence or absence of neutralizing antibodies to Mana 312	6 months
Other	Determine Area Under the Curve (AUC) Pharmacokinetics of Mana 312	AUC	6 months
Other	Measure the Maximum Concentration Pharmacokinetics of Mana 312	Cmax	6 months
Other	Measure blast cell antigen expression pharmacodynamic markers of Mana 312	Measure expression of three target antigens	1 year
Other	Assess potential cytokine induction pharmacodynamic markers of Mana 312	Assess potential cytokine induction as potential biomarker of pharmacodynamic activity	1 year
Other	Measure cell expansion pharmacodynamic markers of Mana 312	Measure cell expansion persistence of Mana 312 subclones	1 year
Other	Measure immune subset pharmacodynamic markers of Mana 312.	Measure immune subset changes by flow cytometry	1 year
Primary	Escalation Cohorts: Identify the Maximum Tolerated Dose (MTD) of Mana 312 based on the safety and tolerability of single and multiple doses.	Maximum Tolerated Dose	6 months
Primary	Escalation Cohorts: Identify the Recommended Phase 2 Dose (RP2D) of Mana 312 based on the safety and tolerability of single and multiple doses.	Recommended Phase 2 Dose	6 months
Primary	Expansion Cohort: Assess preliminary antitumor efficacy of Mana 312 by CR.	CR Rate	1 year
Primary	Expansion Cohort: Assess preliminary antitumor efficacy of Mana 312 by PFS.	PFS Rate	1 year
Secondary	Escalation Cohorts: Assess preliminary evidence of Mana 312 antitumor efficacy by CR.	CR Rate	1 year
Secondary	Escalation Cohorts: Assess preliminary evidence of Mana 312 antitumor efficacy by PFS.	PFS Rate	1 year
Secondary	Expansion Cohort: Confirm safety of the RP2D by measurement of TEAEs.	Assess number of Treatment Related Adverse Events	6 months