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[Bone marrow cellularity in acute lymphoblastic leukemia of children]
J Styczyński1, M Kubicka, B Langer
1Katedry i Kliniki Pediatrii, Hematologii i Onkologii oraz Studenckiego Koła Naukowego Akademii Medycznej w Bydgoszczy.
Wiadomosci Lekarskie (Warsaw, Poland : 1960)
|January 10, 2001
Summary
Early treatment response in childhood acute lymphoblastic leukemia (ALL) involves monitoring blast cells. T-cell ALL patients showed steroid resistance, but blast reduction was similar across both ALL types.
Area of Science:
- Pediatric Oncology
- Hematology
- Leukemia Research
Context:
- Childhood acute lymphoblastic leukemia (ALL) treatment response is crucial.
- Early therapeutic assessment often relies on bone marrow evaluation.
- Standardized protocols like BFM90 and New York 93 guide treatment.
Purpose:
- To analyze blast cell clearance in peripheral blood and bone marrow during induction therapy for childhood ALL.
- To correlate bone marrow blast percentage with cellularity.
- To compare treatment response between precursor-B-ALL and precursor T-ALL.
Summary:
- 38 children with precursor-B-ALL and precursor T-ALL were studied during induction therapy.
- Leukocyte counts, peripheral blood smears, and bone marrow assessments were analyzed.
- T-ALL patients exhibited higher in vivo steroid resistance and delayed remission compared to B-ALL, though blast reduction ratios were comparable. Bone marrow cellularity remained similar on days 14 and 33.
- A significant correlation was found between bone marrow blast count and cellularity (Spearman's rho = 0.72, p = 0.001).
Impact:
- Provides insights into early treatment efficacy markers in pediatric ALL.
- Highlights differences in therapeutic response between B-ALL and T-ALL subtypes.
- Informs potential adjustments to induction therapy protocols for improved outcomes.