{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T03:50:04Z","timestamp":1791949804761,"version":"4.3.4"},"reference-count":21,"publisher":"National Academy of Sciences","issue":"11","content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2001,5,22]]},"abstract":"<jats:p>\n                    Tumor-induced osteomalacia (TIO) is one of the paraneoplastic\n diseases characterized by hypophosphatemia caused by renal phosphate\n wasting. Because removal of responsible tumors normalizes phosphate\n metabolism, an unidentified humoral phosphaturic factor is believed to\n be responsible for this syndrome. To identify the causative factor of\n TIO, we obtained cDNA clones that were abundantly expressed only in a\n tumor causing TIO and constructed tumor-specific cDNA contigs. Based on\n the sequence of one major contig, we cloned 2,270-bp cDNA, which turned\n out to encode fibroblast growth factor 23 (FGF23). Administration of\n recombinant FGF23 decreased serum phosphate in mice within 12 h.\n When Chinese hamster ovary cells stably expressing FGF23 were s.c.\n implanted into nude mice, hypophosphatemia with increased renal\n phosphate clearance was observed. In addition, a high level of serum\n alkaline phosphatase, low 1,25-dihydroxyvitamin D, deformity of bone,\n and impairment of body weight gain became evident. Histological\n examination showed marked increase of osteoid and widening of growth\n plate. Thus, continuous production of FGF23 reproduced clinical,\n biochemical, and histological features of TIO\n                    <jats:italic>in vivo<\/jats:italic>\n                    .\n Analyses for recombinant FGF23 products produced by Chinese hamster\n ovary cells indicated proteolytic cleavage of FGF23 at the RXXR motif.\n Recent genetic study indicates that missense mutations in this RXXR\n motif of FGF23 are responsible for autosomal dominant hypophosphatemic\n rickets, another hypophosphatemic disease with similar features to TIO.\n We conclude that overproduction of FGF23 causes TIO, whereas mutations\n in the FGF23 gene result in autosomal dominant hypophosphatemic rickets\n possibly by preventing proteolytic cleavage and enhancing biological\n activity of FGF23.\n                  <\/jats:p>","DOI":"10.1073\/pnas.101545198","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T10:44:19Z","timestamp":1027680259000},"page":"6500-6505","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":1233,"title":["Cloning and characterization of FGF23 as a causative factor of tumor-induced osteomalacia"],"prefix":"10.1073","volume":"98","author":[{"given":"Takashi","family":"Shimada","sequence":"first","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Satoru","family":"Mizutani","sequence":"additional","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takanori","family":"Muto","sequence":"additional","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Yoneya","sequence":"additional","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rieko","family":"Hino","sequence":"additional","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shu","family":"Takeda","sequence":"additional","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasuhiro","family":"Takeuchi","sequence":"additional","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Toshiro","family":"Fujita","sequence":"additional","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seiji","family":"Fukumoto","sequence":"additional","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takeyoshi","family":"Yamashita","sequence":"additional","affiliation":[{"name":"Pharmaceutical Research Laboratory, Nephrology, Kirin Brewery Co.\r Ltd., 3 Miyahara, Takasaki, Gunma 370-1295, Japan;\r Central Laboratories for Key Technology, Kirin Brewery\r Co. Ltd., 1-13-5 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004,\r Japan; and Division of Endocrinology, Department of\r Medicine, University of Tokyo School of Medicine, and\r Department of Laboratory Medicine, University of\r Tokyo Branch Hospital, 3-28-6 Mejirodai, Bunkyo-ku, Tokyo 112-8688,\r Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"341","published-online":{"date-parts":[[2001,5,8]]},"reference":[{"key":"e_1_3_4_1_2","first-page":"331","volume-title":"Primer on Metabolic Bone Diseases and Disorders of Mineral Metabolism","author":"Drezner M K","year":"1999","unstructured":"M K Drezner Primer on Metabolic Bone Diseases and Disorders of Mineral Metabolism, ed M J Favus (Lippincott, Philadelphia), pp. 331\u2013337 (1999)."},{"key":"e_1_3_4_2_2","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1016\/S8756-3282(00)00334-3","volume":"27","author":"Kumar R","year":"2000","unstructured":"R Kumar Bone 27, 333\u2013338 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