HAV Versus DAV/IAV Induction Regimen in Elderly Patients With AML

Institute of Hematology & Blood Diseases Hospital, China

Status and phase: Enrolling; Phase 2

Conditions: AML

Treatments: Drug: Idarubicin; Drug: Venetoclax; Drug: Homoharringtonine; Drug: cytarabine; Drug: azacitidine; Drug: daunorubicin

Study type: Interventional

Funder types: Other

Identifiers

NCT06744556

IIT2024095

Details and patient eligibility

About

Acute myeloid leukemia (AML) represents the most prevalent leukemia type in China. Elderly patients (≥60 years old) have a high incidence rate, accounting for over half of all AML patients, with a median age of onset approximately 68 years. Elderly AML patients have a poor prognosis and are often accompanied with multiple high-risk factors.The 5-year overall survival (OS) is only 3-8%.

Before the advent of new targeted drugs, for elderly patients with newly diagnosed AML who were suitable for intensive chemotherapy, the most commonly used chemotherapy regimen remained the classic "3 + 7" regimen. However, the complete remission (CR) rate after induction was approximately 40-60%. The majority of elderly patients were not eligible for allogeneic hematopoietic stem cell transplantation, resulting in a relatively poor long-term survival for elderly AML patients . With the emergence of new targeted drugs, clinical studies both domestically and internationally have demonstrated that the combination of various targeted drugs and demethylating agents has achieved favorable efficacy in elderly/unsuitable for intensive chemotherapy patients with newly diagnosed AML, prolonging their survival. Previously, we initiated a multicenter, prospective, randomized controlled clinical study (registration number: NCT06066242). The aim was to explore the optimal induction regimen for elderly fit patients with newly diagnosed AML. Preliminary data revealed that the regimen of daunorubicin (DNR) or idarubicin (IDA) combined with cytarabine (Ara - C, DA/IA) + venetoclax (Ven, DAV/IAV) had a higher induction remission rate (77.3% )than the DA/IA "3 + 7" and Ven + azacitidine (AZA) regimens (45% - 59%). However, compared to the induction remission rate of young adult patients with newly diagnosed AML (> 85%), further improvement is still required.

Previous research data show that HHT enhances the inhibitory effect of Ara-c on DNA synthesis in tumor cells by influencing cell cycle regulation. The combination of HHT and Ven can jointly affect the apoptotic pathway and enhance cell apoptosis.

Therefore, this study intends to establish a prospective, randomized controlled clinical trial to compare the induction remission rates of the HHT + Ara-c + Ven (HAV) regimen with the DAV/IAV regimen, which,based on previous data, had the highest induction remission rate .

Full description

This study is a multicenter, prospective, randomized, and controlled clinical trial, which intends to enroll elderly patients diagnosed with AML in accordance with the WHO (2022) or ICC standards and are suitable for intensive chemotherapy. For patients meeting the inclusion and not meeting the exclusion criteria, they will be randomly grouped and respectively receive induction therapy with either DAV/IAV (2 + 5) or HAV regimens. Patients achieving CR/CRi/CRh after induction treatment will undergo consolidation with the intermediate-dose cytarabine regimen for two courses.After completing the induction and consolidation therapy, maintenance therapy with the VA regimen for six courses will be administered; subsequently, follow-up will be conducted. Patients in the high-risk group and those with non-negative MRD are recommended to undergo allogeneic hematopoietic stem cell transplantation.

Enrollment: 60 estimated patients

Sex: All

Ages: 60 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Conforming to the diagnostic criteria of AML or MDS/AML by WHO (2022) or ICC.
2. Age ≥ 60 years and ≤ 75 years, regardless of gender.
3. The performance status assessment of the Eastern Cooperative Oncology Group (ECOG-PS) is 0 - 2.
4. Meeting the requirements of the following laboratory examination indicators (performed within 7 days before treatment):

1. Total bilirubin ≤ 1.5 times the upper limit of normal for the same age group; 2) AST and ALT ≤ 2.5 times the upper limit of normal for the same age group; 3) Serum creatinine < 2 times the upper limit of normal for the same age group; 4) Cardiac enzymes < 2 times the upper limit of normal for the same age group; 5) The cardiac ejection fraction determined by echocardiography (ECHO) > 50%. The informed consent form must be signed before the initiation of all specific research procedures. It should be signed by the patient himself/herself or an immediate family member. Considering the patient's condition, if the patient's signature is not conducive to the treatment of the disease, the informed consent form should be signed by the legal guardian or an immediate family member of the patient.

Exclusion criteria

1. Acute promyelocytic leukemia accompanied by the PML-RARA fusion gene
2. Acute myeloid leukemia accompanied by the RUNX1-RUNX1T1 or CBFB-MYH11 fusion gene
3. Acute myeloid leukemia accompanied by the BCR-ABL fusion gene
4. Retreated patients (referring to those who have previously undergone induction chemotherapy but can receive hydroxyurea for cytoreduction).
5. Patients concurrently suffering from malignant tumors in other organs (requiring treatment).
6. Active cardiac diseases, defined as one or more of the following:

1. Uncontrolled or symptomatic angina pectoris history; 2) Myocardial infarction less than 6 months from the time of enrollment in the study; 3) History of arrhythmias requiring drug treatment or with severe clinical symptoms; 4) Uncontrolled or symptomatic congestive heart failure (> NYHA Grade 2);

7. Severe infectious diseases (untreated tuberculosis, pulmonary aspergillosis).

8. Those considered ineligible for enrollment by the researcher.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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60 participants in 2 patient groups

DAV/IAV

Active Comparator group

Description:

Induction therapy: Ara-C 100mg/m2/d, d1-5 Daunorubicin 60mg/m2/d, d1-2 or Idarubicin 10mg/m2/d, d1-2 Venetoclax 100mg d3, 200mg d4,400mg d5-11 If the treatment achieves CR/CRi/CRh, proceed directly to consolidation therapy. If the treatment does not achieve CR/CRi/CRh, enter the second induction phase with a different treatment regimen. Second Induction Phase: For patients with FLT3 or IDH1 mutations, targeted therapy can be chosen. If there is no FLT3 or IDH1 mutation or the patient is unwilling to use FLT3 or IDH1 inhibitors, switch to the HAV induction regimen. Consolidation therapy: 1. intermediate-dose Ara-C (ID-Ara-C): 2 cycles are used. Ara-C 1 g/m2/q12h on days 1, 3, and 5 (for patients aged 60-70 years) or Ara-C 500 mg/m2/q12h on days 1, 3, and 5 (for patients aged 70 years or older) Maintenance therapy: VA regimen: 6 courses Azacitidine 75 mg/m2/d on days 1-5, Venetoclax 400 mg on days 1-7.

Treatment:

Drug: daunorubicin

Drug: azacitidine

Drug: cytarabine

Drug: Venetoclax

Drug: Idarubicin

HAV

Experimental group

Description:

Induction Therapy: Ara-C 100mg/m2/d, d1-5 HHT 2mg/m2/d, d1-5 Venetoclax 100mg d3, 200mg d4,400mg d5-11 If CR/CRi/CRh is achieved, proceed directly to consolidation therapy. If the treatment does not reach CR/CRi/CRh, enter the second induction phase with a different treatment regimen. Second course: For patients with FLT3 or IDH1 mutations, the corresponding targeted therapy can be selected, as before. For patients without FLT3 or IDH1 mutations or those who do not want to use FLT3 or IDH1 inhibitors, the DAV/IAV induction regimen is changed. If the treatment does not reach CR/CRi/CRh after two courses, the patient is discharged. Consolidation therapy: 1. intermediate-dose Ara-C (ID-Ara-C): 2 cycles are used. Ara-C 1 g/m2/q12h on days 1, 3, and 5 (for patients aged 60-70 years) or Ara-C 500 mg/m2/q12h on days 1, 3, and 5 (for patients aged 70 years or older) Maintenance therapy: VA : 6 courses

Treatment:

Drug: azacitidine

Drug: cytarabine

Drug: Homoharringtonine

Drug: Venetoclax