ArticleVeterinary and comparative oncology2026
Utility of Cytochemical and Flow Cytometry Detection of Alkaline Phosphatase for Differential Diagnosis of CD34+ Acute Leukaemia in Canines.
Article in Veterinary and comparative oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Utility of Cytochemical and Flow Cytometry Detection of Alkaline Phosphatase for Differential Diagnosis of CD34+ Acute Leukaemia in Canines.Veterinary and comparative oncology · 2026Article
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8 authors.
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Abstract
Alkaline phosphatase (ALP) enzymatic activity has been proposed as a marker for distinguishing canine acute leukaemia (AL) subtypes (i.e., myeloid vs. lymphoid). However, ALP enzymatic activity has not been fully evaluated in CD34+ AL. Determine whether ALP enzymatic activity can differentiate CD34+ AL subtypes in dogs and distinguish CD34+ AL from CD34- haematopoietic tumours in tissue/effusion samples. Peripheral blood from 64 dogs with CD34+ AL, 10 with B cell chronic lymphocytic leukaemia (CLL), and 10 healthy controls were prospectively evaluated for ALP enzymatic activity via cytochemical staining; a subset also underwent ALP detection by flow cytometry (FC). Archived cytology slides from 67 tissue/effusion specimens, including 27 CD34+ AL, 22 T cell lymphomas, and 18 B cell lymphomas, were retrospectively assessed. CD34+ AL cases were categorised as acute myeloid leukaemia (AML), acute lymphoid leukaemia (ALL) or acute unclassifiable leukaemia (AUL) by established FC criteria. ALP positivity was defined as > 3% ALP+ neoplastic cells, which was selected based on receiver operating characteristic (ROC) curve analysis. Cytochemical ALP activity was detected in 61/64 (95.3%) CD34+ AL cases, with no significant differences between AML, ALL, and AUL subtypes (p > 0.05). All lymphoma and B cell CLL cases were ALP-negative. FC-based ALP analysis showed poor concordance with cytochemistry, and the correlation between %CD34 + ALP+ cells and %ALP+ neoplastic cells was weak (Spearman's ρ = 0.25). While ALP enzymatic activity is present in most CD34+ AL cases, it does not reliably differentiate CD34+ AL subtypes via cytochemistry. However, ALP may help distinguish CD34+ AL from B and T cell lymphomas. FC-based ALP analysis is not a reliable marker for CD34+ AL classification.
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