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Comparison of neutropenia profiles in different treatment protocols for acute myeloid leukemia using the D-index
Yasufumi Kawasaki1, Shun-Ichi Kimura2, Hirofumi Nakano1
1Division of Hematology, Department of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
Abstract:
Neutropenia is a major risk factor for opportunistic infections in patients with acute myeloid leukemia (AML) who undergo chemotherapy. In the present study, we retrospectively compared the D-index, which reflects both the depth and duration of neutropenia, between two different chemotherapy regimens for AML. Sixty-seven patients with AML were included: 37 received an induction regimen of daunorubicin (DNR) and cytarabine followed by consolidation therapies consisting of standard-dose cytarabine (SDAC) and other antineoplastic agents; the remaining 30 received idarubicin (IDR) and cytarabine as remission induction therapy followed by high-dose cytarabine (HDAC). The duration of neutropenia was shorter, but the D-index was higher, with IDR than with DNR. The total D-index during the entire consolidation therapies was significantly higher with SDAC than with HDAC. In conclusion, the neutropenia profile differs between treatment regimens, and thus, physicians should plan the management of infectious complications according to the neutropenia profile for each regimen.
Insights
This study compared neutropenia profiles in acute myeloid leukemia (AML) patients receiving different chemotherapy regimens. Regimens impact neutropenia depth and duration, necessitating tailored infection management strategies.
Area of Science:
- Oncology
- Hematology
- Pharmacology
Background:
- Neutropenia is a significant risk factor for opportunistic infections in acute myeloid leukemia (AML) patients undergoing chemotherapy.
- Understanding neutropenia profiles associated with different chemotherapy regimens is crucial for managing infectious complications.
Purpose of the Study:
- To retrospectively compare the D-index, reflecting neutropenia depth and duration, between two distinct chemotherapy regimens for AML.
- To analyze how daunorubicin (DNR) versus idarubicin (IDR) induction, followed by standard-dose cytarabine (SDAC) versus high-dose cytarabine (HDAC) consolidation, affects neutropenia profiles.
Main Methods:
- Retrospective comparison of the D-index in 67 AML patients.
- Patients received either DNR + cytarabine induction followed by SDAC consolidation or IDR + cytarabine induction followed by high-dose cytarabine (HDAC) consolidation.
Main Results:
- The idarubicin (IDR) regimen resulted in a shorter duration of neutropenia but a higher D-index compared to the daunorubicin (DNR) regimen.
- The D-index during consolidation therapy was significantly higher with standard-dose cytarabine (SDAC) compared to high-dose cytarabine (HDAC).
Conclusions:
- Neutropenia profiles vary significantly between different AML chemotherapy regimens.
- Physicians must tailor the management of infectious complications based on the specific neutropenia profile associated with each treatment regimen.
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