{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T06:53:39Z","timestamp":1772002419162,"version":"3.50.1"},"reference-count":10,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2023,9,15]],"date-time":"2023-09-15T00:00:00Z","timestamp":1694736000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["accpjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pharmacotherapy"],"published-print":{"date-parts":[[2023,12]]},"abstract":"Abstract<\/jats:title>\n \n Background<\/jats:title>\n Hypertrophic cardiomyopathy (HCM) is a genetic disorder for which first\u2010line treatments for obstructive HCM (oHCM) include beta\u2010blockers, non\u2010dihydropyridine calcium channel blockers, and disopyramide for refractory cases. Mavacamten, a selective cardiac myosin inhibitor, is indicated for symptomatic oHCM to improve functional capacity and symptoms. Use of disopyramide and mavacamten together is not recommended due to concerns of additive negative inotropic effects. Transitioning from disopyramide to mavacamten may be preferred to avoid adverse effects and frequent administration, however, the best approach for making the transition has not been established.<\/jats:p>\n <\/jats:sec>\n \n Cases<\/jats:title>\n We present a series of seven patients with oHCM who transitioned from disopyramide to mavacamten and underwent echocardiograms mandated by a Risk Evaluation and Mitigations Strategies program. Two methods were employed. The first approach, involving washout of disopyramide before starting mavacamten, resulted in worsening of heart failure symptoms in the first two cases. The second approach, involving tapering disopyramide when starting mavacamten, was successfully implemented in the last five cases, with no adverse effects or worsening of systolic dysfunction.<\/jats:p>\n <\/jats:sec>\n \n Conclusion<\/jats:title>\n Our method of tapering disopyramide when starting mavacamten using a stepwise approach is feasible and safe. Our report fulfills an unmet need by serving as a guide for other clinicians who seek to transition their patients from disopyramide to mavacamten.<\/jats:p>\n <\/jats:sec>","DOI":"10.1002\/phar.2874","type":"journal-article","created":{"date-parts":[[2023,9,9]],"date-time":"2023-09-09T03:54:06Z","timestamp":1694231646000},"page":"1397-1404","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Transitioning disopyramide to mavacamten in obstructive hypertrophic cardiomyopathy: A case series and clinical guide"],"prefix":"10.1002","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2146-3624","authenticated-orcid":false,"given":"Andrew","family":"Willeford","sequence":"first","affiliation":[{"name":"UC San Diego Skaggs School of Pharmacy and Pharmaceutical Sciences San Diego California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9493-0932","authenticated-orcid":false,"given":"Jorge","family":"Silva\u00a0Enciso","sequence":"additional","affiliation":[{"name":"Division of Cardiology, Department of Medicine University of California San Diego San Diego California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,9,15]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacc.2021.12.002"},{"issue":"25","key":"e_1_2_9_3_1","first-page":"e558","article-title":"2020 AHA\/ACC guideline for the diagnosis and treatment of patients with hypertrophic cardiomyopathy: a report of the American College of Cardiology\/American Heart Association joint committee on clinical practice guidelines","volume":"142","author":"Ommen SR","year":"2020","journal-title":"Circulation"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1093\/eurheartj\/ehu284"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.17925\/HI.2022.16.2.91"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s40265-022-01739-7"},{"key":"e_1_2_9_7_1","volume-title":"Camzyos (mavacamten) [package insert]","year":"2022"},{"key":"e_1_2_9_8_1","volume-title":"Norpace (disopyramide) [package insert]","year":"2020"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(20)31792-X"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacc.2022.04.048"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.7326\/M18-3016"}],"container-title":["Pharmacotherapy: The Journal of Human Pharmacology and Drug Therapy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/accpjournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/phar.2874","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T17:52:31Z","timestamp":1761069151000},"score":1,"resource":{"primary":{"URL":"https:\/\/accpjournals.onlinelibrary.wiley.com\/doi\/10.1002\/phar.2874"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,9,15]]},"references-count":10,"journal-issue":{"issue":"12","published-print":{"date-parts":[[2023,12]]}},"alternative-id":["10.1002\/phar.2874"],"URL":"https:\/\/doi.org\/10.1002\/phar.2874","archive":["Portico"],"relation":{},"ISSN":["0277-0008","1875-9114"],"issn-type":[{"value":"0277-0008","type":"print"},{"value":"1875-9114","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,9,15]]},"assertion":[{"value":"2023-04-17","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-07-14","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-09-15","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}