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  • Title: Functional and multimarker analysis of T-cell chronic lymphocytic leukaemia.
    Author: Baldini L, Di Padova F, Cortelezzi A, Neri A, Nobili L, Lavezzi AM, Maiolo AT, Polli EE.
    Journal: Scand J Haematol; 1985 Jan; 34(1):88-96. PubMed ID: 3155872.
    Abstract:
    The morphology, immunophenotype, cytoenzymatic and functional activities of T lymphocytes from 4 patients with chronic lymphoproliferative disease of T-cell origin were studied. Clonal proliferation was demonstrated by distinctive chromosomal abnormalities involving chromosomes 2 and 14. Patients 1 and 2 were classifiable as OKT4+ T-cell chronic lymphocytic leukaemia (T-CLL) and patient 3 as OKT4+/OKT8+ T-CLL, with helper function in vitro only in patient 1. Patient 4 has low-grade lymphocytosis with benign clinical course, with cells showing morphology of large granular lymphocytes (LGL), and immunophenotype HNK-1+, ER+, Fc gamma receptor+, OKT3+, OKT11+ and OKT8+, as well as natural killer activity, radiosensitive suppressor activity on Ig secretion and responsiveness to PHA; this case was interpreted as LGL leukaemia. This study indicates that a large proportion of cases of true T-CLL may belong to the OKT4 subset, and that extensive investigations should be made of the lymphocytic OKT8+/T gamma forms to characterize them precisely.
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