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Additionally, to calculate yearly prevalence and caseload of the most severe LD cases that will eventually result in pediatric death (i.e., <jats:italic>pediatric fatality cases<\/jats:italic>). Death certificate records describing cause of death were collected from states based on 10 ICD\u201010 codes associated with the 23 LDs. Deaths in the U.S. with these codes were distributed into categories based on proportions identified in state death certificate data. Mortality rates, prevalence, and caseload were calculated from resulting expected numbers, <jats:italic>population<\/jats:italic> sizes, and average lifetimes. An estimated 1.513 per 1,000,000 0\u201317\u2009year old's died of these LDs at average age 5.2\u2009years and 0.194 for those \u226518 at an average age of 42.3\u2009years. Prevalence of <jats:italic>pediatric fatality cases<\/jats:italic> of these LDs declined from 1999 through 2007 and then remained constant at 6.2 per million children per year through 2012. Epidemiological information, currently lacking for rare diseases, is useful to newborn screening programs, research funding agencies, and care centers for LD patients. Methods used here are generally useful for studying rare diseases.<\/jats:p>","DOI":"10.1002\/ajmg.a.62248","type":"journal-article","created":{"date-parts":[[2021,5,8]],"date-time":"2021-05-08T22:40:53Z","timestamp":1620513653000},"page":"2361-2373","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Death rates in the U.S. due to Leukodystrophies with pediatric forms"],"prefix":"10.1002","volume":"185","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3019-8970","authenticated-orcid":false,"given":"Amy L.","family":"Barczykowski","sequence":"first","affiliation":[{"name":"Population Health Observatory, School of Public Health and Health Professions University at Buffalo  Buffalo New York USA"},{"name":"Department of Biostatistics, School of Public Health and Health Professions University at Buffalo  Buffalo New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas J.","family":"Langan","sequence":"additional","affiliation":[{"name":"Hunter James Kelly Research Institute, School of Medicine and Biomedical Sciences School of Medicine and Biomedical Sciences University at Buffalo  Buffalo New York USA"},{"name":"Department of Neurology, School of Medicine and Biomedical Sciences University at Buffalo  Buffalo New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adeline","family":"Vanderver","sequence":"additional","affiliation":[{"name":"The Division of Neurology, Department of Pediatrics, The Children's Hospital of Philadelphia  Philadelphia Pennsylvania USA"},{"name":"The Department of Neurology, Perelman School of Medicine University of Pennsylvania  Philadelphia Pennsylvania USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kabir","family":"Jalal","sequence":"additional","affiliation":[{"name":"Population Health Observatory, School of Public Health and Health Professions University at Buffalo  Buffalo New York USA"},{"name":"Department of Biostatistics, School of Public Health and Health Professions University at Buffalo  Buffalo New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Randy L.","family":"Carter","sequence":"additional","affiliation":[{"name":"Population Health Observatory, School of Public Health and Health Professions University at Buffalo  Buffalo New York USA"},{"name":"Department of Biostatistics, School of Public Health and Health Professions University at Buffalo  Buffalo New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,5,7]]},"reference":[{"issue":"5","key":"e_1_2_11_2_1","first-page":"303","article-title":"Endocrinologic disorders in deletion of chromosome 18","volume":"140","author":"Andler W.","year":"1992","journal-title":"Monatsschr Kinderheilkd"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.3233\/TRD-160003"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.a.35624"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajhg.2011.07.014"},{"key":"e_1_2_11_6_1","first-page":"41","article-title":"Rare diseases and orphan products: Accelerating research and development","author":"Boat T. 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