Safety and Efficacy of CD123-Targeted CAR-T Therapy for Relapsed/Refractory Acute Myeloid Leukemia

Sponsor

Chongqing Precision Biotech Co., Ltd (Industry)

Overall Status

Recruiting

CT.gov ID

NCT04272125

Collaborator

(none)

Enrollment

Location

Arm

Anticipated Duration (Months)

0.9

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

This is a single arm study to evaluate the efficacy and safety of CD123-targeted CAR-T cells therapy for patients with relapsed/refractory Acute Myeloid Leukemia.

Condition or Disease	Intervention/Treatment	Phase
Leukemia Leukemia, Myeloid Leukemia, Myeloid, Acute	Biological: CD123 CAR-T cells	Phase 1/Phase 2

Detailed Description

There are limited options for treatment of relapse/refractory Acute Myeloid Leukemia. CD123 is expressed on most myeloid leukemia cells so it is an ideal target for CAR-T. Some researches have revealed that CD123 is a marker of leukemia stem cells, which indicates that the eradication of CD123 cells may prevent relapse of leukemia. In this study, investigators will evaluate the safety and efficacy of CAR-T targeting CD123 in patients with relapsed/refractory Acute Myeloid Leukemia. The primary goal is safety and efficiency assessment, including adverse events and disease status after treatment.

Study Design

Study Type:

Interventional

Anticipated Enrollment :

40 participants

Allocation:

N/A

Intervention Model:

Single Group Assignment

Masking:

None (Open Label)

Primary Purpose:

Treatment

Official Title:

Safety and Efficacy of CD123-Targeted CAR-T Therapy for Relapsed/Refractory Acute Myeloid Leukemia

Actual Study Start Date :

Dec 1, 2019

Anticipated Primary Completion Date :

Dec 30, 2022

Anticipated Study Completion Date :

Jul 1, 2023

Arms and Interventions

Arm	Intervention/Treatment
Experimental: CD123 CAR-T cells treat Patients will be be treated with CD123 CAR-T cells	Biological: CD123 CAR-T cells A single infusion of CD123-CAR-T cells will be administered intravenously

Arm

Intervention/Treatment

Experimental: CD123 CAR-T cells treat

Patients will be be treated with CD123 CAR-T cells

Biological: CD123 CAR-T cells

A single infusion of CD123-CAR-T cells will be administered intravenously

Outcome Measures

Primary Outcome Measures

Adverse events that related to treatment [2 years]
Therapy-related adverse events will be recorded and assessed according to the National Cancer Institute's Common Terminology Criteria for Adverse Events (CTCAE, Version 5.0)
The response rate of CD123 CAR-T treatment in patients with relapse/refractory Acute Myeloid Leukemia that treatment by CD123 CAR-T cells therapy [6 months]
The response rate of CD123 CAR-T treatment will be recorded and assessed according to the National Comprehensive Cancer Network Guideline

Secondary Outcome Measures

Rate of CD123 CAR-T cells in bone marrow and peripheral blood [2 years]
In vivo (bone marrow and peripheral blood) rate of CD123 CAR-T cells were determined by means of flow cytometry
Quantity of CD123 CAR copies in bone marrow and peripheral blood [2 years]
In vivo (bone marrow and peripheral blood) quantity of CD123 CAR copies were determined by means of qPCR
Cellular kinetics of CD123 positive cells in bone marrow [1 years]
In vivo (bone marrow) rate and quantity of CD123 positive cells were determined by means of flow cytometry
Levels of cytokines in serum [3 months]
In vivo (serum) quantity of cytokines
Duration of Response (DOR) of CD123 CAR-T treatment in patients with refractory/relapsed acute myeloid leukemia [2 years]
DOR will be assessed from the first assessment of CR/CRi to the first assessment of recurrence or progression of the disease or death from any cause (censored)
Progress-free survival(PFS) of CD123 CAR-T treatment in patients with refractory/relapsed acute myeloid leukemia [2 year]
PFS will be assessed from the first CAR-T cell infusion to death from any cause or the first assessment of progression (censored)
Overall survival(OS) of CD123 CAR-T treatment in patients with refractory/relapsed acute myeloid leukemia [2 years]
OS will be assessed from the first CAR-T cell infusion to death from any cause (censored)

Eligibility Criteria

Criteria

Ages Eligible for Study:

3 Years to 75 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Inclusion Criteria:

Signed written informed consent;
Diagnose as relapsed /refractory acute myeloid leukemia, and meet one of the following conditions:
Failed to standard chemotherapy regimens;
Relapse after complete remission, high-risk and / or refractory patients ;
Relapse after hematopoietic stem cell transplantation;
Evidence for cell membrane CD123 expression;
All genders, ages: 3 to 75 years；
The expect time of survive is above 12 weeks;
KPS>60；
No serious mental disorders ;
Left ventricular ejection fraction ≥50%
Sufficient hepatic function defined by ALT/AST≤3 x ULN and bilirubin≤2 x ULN;
Sufficient renal function defined by creatinine clearance≤2 x ULN;
Sufficient pulmonary function defined by indoor oxygen saturation≥92%;
With single or venous blood collection standards, and no other cell collection contraindications;
Ability and willingness to adhere to the study visit schedule and all protocol requirements.

Exclusion Criteria:

Have received CAR-T therapy or other genetically modified cell therapy before screening；
Participated in other clinical research within 1 month before screening；
Have received the following anti-tumor treatment before screening: Have received chemotherapy, targeted therapy or other experimental drug treatment within 4 weeks, except those who have confirmed disease progression after treatment;
Live attenuated vaccine within 4 weeks before screening;
Convulsion or stoke within past 6 months;
Previous history of other malignancy;
Presence of uncontrolled active infection;
Subjects with positive HBsAg or HBcAb positive and peripheral blood HBV DNA titer is higher than the lower limit of detection of the research institution; HCV antibody positive and peripheral blood HCV RNA titer is higher than the lower limit of detection of the research institution; HIV antibody positive; syphilis primary screening antibody positive;
Pregnant or breasting-feeding women;
Any situation that investigators regard not suitable for attending in this study or may affect the data analysis.