Takashi Ozaki, Chiharu Imada, Kohei Shirakami, Tasuku Abe, Yuta Shingai, Tatsuhito Umeki, Akihiro Fukuda, Koji Ishii, Hirotaka Shibata
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Serum Soluble Interleukin-2 Receptor as a Potential Marker for Assessing Disease Activity in the TAFRO Subtype of Idiopathic Multicentric Castleman Disease.
Idiopathic multicentric Castleman disease (iMCD) accompanied by thrombocytopenia, anasarca, fever, reticulin myelofibrosis/renal insufficiency, and organomegaly (TAFRO) frequently develops into prolonged severe thrombocytopenia and multiorgan dysfunction, which is associated with a high mortality rate. We herein describe three cases of iMCD-TAFRO in which serum soluble interleukin-2 receptor (sIL-2R) levels varied in relation to disease activity following the initiation of treatment. Thrombocytopenia persisted for several weeks to months after the normalization of the patients' C-reactive protein levels, whereas their sIL-2R levels normalized 10-47 days prior to platelet recovery (≥100×109/L). The serum sIL-2R measurement may therefore be an effective method for evaluating the disease activity in iMCD-TAFRO patients with prolonged thrombocytopenia.
期刊介绍：
Internal Medicine is an open-access online only journal published monthly by the Japanese Society of Internal Medicine.
Articles must be prepared in accordance with "The Uniform Requirements for Manuscripts Submitted to Biomedical Journals (see Annals of Internal Medicine 108: 258-265, 1988), must be contributed solely to the Internal Medicine, and become the property of the Japanese Society of Internal Medicine. Statements contained therein are the responsibility of the author(s). The Society reserves copyright and renewal on all published material and such material may not be reproduced in any form without the written permission of the Society.
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