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  • Title: Clinical significance of serum thymidine kinase in adult T-cell leukaemia and acute myeloid leukaemia.
    Author: Sadamori N, Ichiba M, Mine M, Hakariya S, Hayashibara T, Itoyama T, Nakamura H, Tomonaga M, Hayashi K.
    Journal: Br J Haematol; 1995 May; 90(1):100-5. PubMed ID: 7786770.
    Abstract:
    To clarify the clinical and biological significance of serum thymidine kinase (TK) in adult T-cell leukaemia (ATL) associated with human lymphotropic virus type-I (HTLV-I) and in acute myeloid leukaemia (AML), TK was measured in 52 patients with ATL (acute ATL, 35 patients; lymphoma ATL, two patients; chronic ATL, 12 patients; smouldering ATL, three patients), and in 27 patients with AML (one FAB MO, one M1, 10 M2, seven M3, five M4, one M5, one M6, one MU). In ATL patients, statistical analysis disclosed a close correlation between TK level and the leucocyte count (P < 0.01), and absolute number of abnormal lymphocytes (P < 0.01). However, no correlation was observed between serum lactic dehydrogenase (LDH) level and these items. Concerning the therapeutic response, a statistical difference was present in TK between complete remission and no response (P < 0.05), but not in LDH. We also investigated a significant inverse correlation between TK level as well as LDH level and the length of survival after the initial diagnosis (P < 0.01). In AML patients a close correlation of TK level with the count of leucocytes (P < 0.01), percentage of blasts in the blood (P < 0.05), therapeutic response (P < 0.01) and the length of survival after the initial diagnosis (P < 0.05) was present. Therefore the TK level may indicate the aggressiveness of leukaemic cells and predict the response to the chemotherapy and the length of survival in ATL and AML.
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