title: HTLV-1 carriers with B-cell lymphoma of localized stage head and neck: prognosis, clinical and immunopathological features.
abstract: Human T-lymphotropic virus type I (HTLV-I) is closely associated with T-cell lymphoma/leukaemia, which always shows monoclonal HTLV-1 provirus DNA integration. HTLV-1 is not associated with B-cell lymphoma. The relationship between B-cell lymphoma and HTLV-1 was analysed retrospectively in early stage B-cell non-Hodgkin's lymphoma (NHL) according to HTLV-1 infection and pathological features. We analysed 198 cases of head and neck B-cell NHL treated with radiotherapy and/or chemotherapy; 21 were seropositive and 177 were seronegative for HTLV-1. We also immunostained 26 cases of diffuse large B-cell lymphoma (DLBL), including 12 seropositive and 14 seronegative for HTLV-1 respectively, for CD20, CD3, CD4, CD8, CD56, MIB-1 and T-cell-restricted intracellular antigen (TIA-1) to examine the phenotype, immunity and proliferation activity. The 5-year overall survival rates were 78% and 49% (P = 0.007, log rank test) for HTLV-1 seronegative and seropositive cases respectively. Infection with HTLV-1 was significantly associated with poor survival in patients with B-cell lymphoma by multivariate analysis. For DLBL, HTLV-1 infection was not a significant factor, but the overall survival curve was similar to that of the 21 seropositive B-cell lymphoma cases. Lymphoma cells were negative for TIA-1, but the background lymphocytes were positive for this marker. The number of TIA-1-positive cells was higher in HTLV-1-negative cases than in-positive cases. In conclusion, patients with B-cell-NHL (B-NHL) who are also HTLV-1 carriers have a poorer prognosis than non-carriers. HTLV-1 does not seem to be associated with lymphomagenesis of the B phenotype itself, but correlates with host immunity by reducing the number of cytotoxic T-cells.
authors: Department of Pathology, School of Medicine, Fukuoka University, Fukuoka, Japan.
authors: Hiroaki
authors: H
authors: Suefuji
authors: Koichi
authors: K
authors: Ohshima
authors: Naofumi
authors: N
authors: Hayabuchi
authors: Katsumasa
authors: K
authors: Nakamura
authors: Masahiro
authors: M
authors: Kikuchi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017252:CD3 Complex / Q000032:analysis; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D019002:CD56 Antigen / Q000032:analysis; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D002353:Carrier State; D006800:Deltaretrovirus Infections / Q000150:complications* / Q000401:mortality; D005260:Female; D006258:Head and Neck Neoplasms / Q000401:mortality / Q000821:virology*; D015368:Human T-lymphotropic virus 1; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology; D016393:Lymphoma, B-Cell / Q000401:mortality / Q000821:virology*; D016403:Lymphoma, Large B-Cell, Diffuse / Q000401:mortality / Q000821:virology; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011379:Prognosis; D012189:Retrospective Studies; D015996:Survival Rate; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology
chemical_list: D017252:CD3 Complex; D019002:CD56 Antigen