{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T04:20:05Z","timestamp":1787631605727,"version":"build-2736575974"},"reference-count":17,"publisher":"Oxford University Press (OUP)","issue":"6","content-domain":{"domain":["eje.bioscientifica.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2013,6]]},"abstract":"<jats:sec><jats:title>Context<\/jats:title><jats:p>Medullary thyroid carcinoma (MTC) accounts for 3\u20134% of all malignant thyroid neoplasias. Vandetanib, a tyrosine kinase inhibitor (TKI) targeting vascular endothelial growth factor receptor 2, epidermal growth factor receptor, and RET, has been approved by the FDA for the treatment of locally advanced or metastatic MTC. The heart seems to be particularly susceptible to adverse effects associated with TKI therapy, and virtually all TKIs have been associated with cardiovascular events.<\/jats:p><\/jats:sec><jats:sec><jats:title>Clinical presentation<\/jats:title><jats:p>We report the case of a patient with metastatic MTC who was enrolled in the Phase III clinical study (NCT00410761) and presented a favorable response to vandetanib therapy, displaying marked decrease in the level of serologic tumor markers and shrinkage of metastatic lesions. After 14 months of therapy, the patient developed a fatal cardiac failure. Myocardial infarction was excluded by serial measurements of specific cardiac markers (serial troponin-T measurements varied from 0.037 to 0.042\u200ang\/ml) and serologic tests for Chaga's disease were negative. Postmortem examination of the heart revealed cardiomyocyte hypertrophy and marked myocyte degeneration in the subendocardial zones and papillary muscles of the myocardium. These pathological changes are similar to those observed in TKI-treated rats and are suggestive of drug-induced cardiotoxicity.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This case illustrates a previously unreported serious vandetanib-related adverse effect and highlights the need for close monitoring of patients under TKI therapy in order to identify early signs of congestive heart failure or myocardium damage.<\/jats:p><\/jats:sec>","DOI":"10.1530\/eje-13-0015","type":"journal-article","created":{"date-parts":[[2013,3,14]],"date-time":"2013-03-14T05:24:19Z","timestamp":1363238659000},"page":"K51-K54","update-policy":"https:\/\/doi.org\/10.1530\/crossmarkpolicy-1","source":"Crossref","is-referenced-by-count":27,"title":["Toxic cardiomyopathy leading to fatal acute cardiac failure related to vandetanib: a case report with histopathological analysis"],"prefix":"10.1093","volume":"168","author":[{"given":"Rafael Selbach","family":"Scheffel","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9 Miguel","family":"Dora","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D\u00e9bora R","family":"Siqueira","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lucas Medeiros","family":"Burttet","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcelle R","family":"Cerski","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana Luiza","family":"Maia","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","reference":[{"key":"1_42468819","first-page":"221","volume":"13","year":"2012","journal-title":"INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES"},{"issue":"6","key":"2_37645871","doi-asserted-by":"crossref","first-page":"475","DOI":"10.1016\/j.clon.2010.05.002","volume":"22","author":"Pacini","year":"2010","journal-title":"Clinical oncology (Royal College of Radiologists (Great Britain))","ISSN":"https:\/\/id.crossref.org\/issn\/0936-6555","issn-type":"print"},{"issue":"2","key":"3_41069949","doi-asserted-by":"publisher","first-page":"134","DOI":"10.1200\/JCO.2011.35.5040","volume":"30","year":"2012","journal-title":"Journal of Clinical Oncology","ISSN":"https:\/\/id.crossref.org\/issn\/0732-183X","issn-type":"print"},{"issue":"5","key":"5_28481623","doi-asserted-by":"publisher","first-page":"332","DOI":"10.1038\/nrc2106","volume":"7","author":"Force","year":"2007","journal-title":"Nature reviews. 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