@article{oai:nagasaki-u.repo.nii.ac.jp:00020122, author = {Sugahara, Kazuyuki and Tsuruda, Kazuto and Yamada, Yasuaki and Hirakata, Youichi and Atogami, Sunao and Sohda, Hisashi and Tsukazaki, Kunihiro and Tomonaga, Masao and Kamihira, Shimeru}, issue = {3-4}, journal = {Acta medica Nagasakiensia}, month = {Dec}, note = {Adult T-cell leukemia (ATL) is heterogeneous and sometimes equivocal to other T-cell neoplasms. Detecting anti- HTLV-1 antibodies is significant for a first screening not only for HTLV-1 infection but also for the HTLV-1-related disorders of ATL and TSP/HAM. The purpose of the present study was to investigate the diagnostic validity of HTLV-1 serology in ATL. The serologic results by a gelatin particle agglutination (PA) assay were highly sensitive (100%) and specific (99.5%) for the results of polymerase chain reaction (PCR) assay in 666 healthy blood donors who live in an area endemic for the HTLV-1 virus. Of 7,536 hospitalized patients, 189 patients with ATL were serologically screened. There were 1,140 patients (15.2%) infected by chance with HTLV-1, showing specificity, sensitivity, positive predictive value (PV), and negative PV of 84.3%, 100%, 14.2%, and 100%, respectively. Since the low positive PV (14.2%) was useless, we tried combining the anti-HTLV-1 assay with the immunophenotyping necessary for the diagnosis of lymphoid neoplasms. This combination gave nearly 100% positive and negative PV, and could prove to be useful in diagnosing ATL with the probability of 98%, especially for epidemiologic studies., Acta medica Nagasakiensia. 1996, 41(3-4), p.66-70}, pages = {66--70}, title = {Diagnostic Validity of Combining HTLV-1 Serology and Immunophenotyping in Adult T-Cell Leukemia}, volume = {41}, year = {1996} }