A Clinical Study to Investigate the Safety and Efficacy of Off-the-Shelf iNKT Cell Injection Targeting CD33/CD70 in Adult Patients With Relapsed/Refractory Acute Myeloid Leukemia

Trial statusNot yet recruiting
Trial phaseEarly Phase 1
Trial typeInterventional
Biological sexAll
Age18-75
SponsorGrit Biotechnology

About this trial

This is a single-arm, open-label, dose-escalation, prospective exploratory clinical study intended to evaluate the safety, efficacy and cellular pharmacokinetics of GT737 cells in adult patients with relapsed/refractory acute myeloid leukemia (AML).

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

1. Voluntarily participate in this clinical study, fully understand the study content, sign the informed consent form, and be willing to comply with all study procedures and complete all follow-up visits.

2. Aged between 18 and 75 years old (inclusive), with no restriction on gender.

Relapsed disease: Relapse after achieving complete remission (CR) or complete remission with incomplete hematologic recovery (CRi) following standard induction chemotherapy;

Refractory disease: a) Failure to achieve CR/CRi after 2 cycles of induction chemotherapy; b) Relapse within 12 months of first remission with no response to subsequent re-treatment; c) Relapse after autologous or allogeneic hematopoietic stem cell transplantation; d) Failure to achieve CR/CRi after at least two lines of salvage therapy.

Disqualifiers

1. Prior history of central nervous system (CNS) leukemia; or intracranial magnetic resonance imaging (MRI)/PET-CT at screening suggestive of CNS leukemia; or malignant cells identified in cerebrospinal fluid (CSF).

2. Other untreated malignant neoplasms diagnosed within the past 5 years or concurrent malignancies (Exceptions: adequately treated cervical carcinoma in situ, localized cutaneous squamous cell carcinoma, basal cell carcinoma, localized prostate cancer, ductal carcinoma in situ of the breast, urothelial carcinoma ≤T1; participants with prostate cancer under active surveillance are eligible).

3. Prior receipt of CD33- or CD70-targeted cellular therapies including CAR-T, NK or iNKT cells (Excluding subjects previously treated with GT737 who qualify for re-treatment).

4. Systemic corticosteroids administered within 7 days prior to cell infusion (Exceptions: inhaled corticosteroids and subjects with prior allogeneic transplantation history).

Trial design

Design model

Single group

Treatments tested in this trial

  • GT737 Injection

    Biological/Vaccine

    GT737 Injection

Treatment groups

36 Participants
are divided into 1 treatment group
Group A: GT737 Injection treatment groupExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Proportion of participants experiencing dose limiting toxicity

The proportion of participants with dose-limiting toxicity (DLT) occurring within 28 days after infusion

Time frame
28 days
2

Adverse Events (AEs) occurring after infusion and their proportions

Adverse Events (AEs) occurring after infusion and their proportions

Time frame
28 days
3

Severity of Adverse Events (AEs) after infusion

Assess the severity of Adverse Events (AEs) within 28 days after infusion

Time frame
28 days
4

Compare the differences in safety and tolerability between different treatment subgroups (monotherapy and combination with sirolimus).

Difference in the incidence and severity of DLT among different treatment subgroups (monotherapy and combination with sirolimus)

Time frame
28 Days

Secondary outcomes

1

Pharmacokinetic parameters: Time to peak expansion (Tmax)after GT737 infusion

Monitor the time to peak expansion (Tmax)after GT737 infusion.

Time frame
28 Days
2

Pharmacokinetic parameters: peak expansion(Cmax) after GT737 infusion

Monitor the peak expansion(Cmax) after GT737 infusion.

Time frame
28 Days
3

Pharmacokinetic parameters: area under the curve (AUC) after GT737 infusion

Monitor the area under the curve (AUC) after GT737 infusion.

Time frame
28 Days
4

Pharmacokinetic parameters: survival duration after GT737 infusion

Monitor the survival duration after GT737 infusion.

Time frame
12 months after infusion

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

Grit Biotechnology

Lead sponsor

Shenzhen People's Hospital

Collaborator

This trial is not recruiting at the moment. You can still explore other options: