{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T15:46:24Z","timestamp":1791215184937,"version":"4.1.0"},"reference-count":189,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2021,2,10]],"date-time":"2021-02-10T00:00:00Z","timestamp":1612915200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Center for Biomedical Research Excellence (COBRE)","award":["COBRE, grant number P30GM114736"],"award-info":[{"award-number":["COBRE, grant number P30GM114736"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diagnostics"],"abstract":"<jats:p>Mucopolysaccharidoses (MPS) are a group of lysosomal storage disorders caused by a lysosomal enzyme deficiency or malfunction, which leads to the accumulation of glycosaminoglycans in tissues and organs. If not treated at an early stage, patients have various health problems, affecting their quality of life and life-span. Two therapeutic options for MPS are widely used in practice: enzyme replacement therapy and hematopoietic stem cell transplantation. However, early diagnosis of MPS is crucial, as treatment may be too late to reverse or ameliorate the disease progress. It has been noted that the prevalence of MPS and each subtype varies based on geographic regions and\/or ethnic background. Each type of MPS is caused by a wide range of the mutational spectrum, mainly missense mutations. Some mutations were derived from the common founder effect. In the previous study, Khan et al. 2018 have reported the epidemiology of MPS from 22 countries and 16 regions. In this study, we aimed to update the prevalence of MPS across the world. We have collected and investigated 189 publications related to the prevalence of MPS via PubMed as of December 2020. In total, data from 33 countries and 23 regions were compiled and analyzed. Saudi Arabia provided the highest frequency of overall MPS because of regional or consanguineous marriages (or founder effect), followed by Portugal, Brazil, the Netherlands, and Australia. The newborn screening is an efficient and early diagnosis for MPS. MPS I has been approved for newborn screening in the United States. After the newborn screening of MPS I, the frequency of MPS I increased, compared with the past incidence rates. Overall, we conclude that the current identification methods are not enough to recognize all MPS patients, leading to an inaccurate incidence and status. Differences in ethnic background and\/or founder effects impact on the frequency of MPS, which affects the prevalence of MPS. Two-tier newborn screening has accelerated early recognition of MPS I, providing an accurate incidence of patients.<\/jats:p>","DOI":"10.3390\/diagnostics11020273","type":"journal-article","created":{"date-parts":[[2021,2,12]],"date-time":"2021-02-12T00:49:26Z","timestamp":1613090966000},"page":"273","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":132,"title":["Epidemiology of Mucopolysaccharidoses Update"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0379-8076","authenticated-orcid":false,"given":"Betul","family":"Celik","sequence":"first","affiliation":[{"name":"Nemours\/Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA"},{"name":"Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8244-3571","authenticated-orcid":false,"given":"Saori C.","family":"Tomatsu","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0673-2160","authenticated-orcid":false,"given":"Shunji","family":"Tomatsu","sequence":"additional","affiliation":[{"name":"Nemours\/Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaukat A.","family":"Khan","sequence":"additional","affiliation":[{"name":"Nemours\/Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,2,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1016\/j.ymgme.2017.05.016","article-title":"Epidemiology of Mucopolisaccharidoses","volume":"121","author":"Khan","year":"2018","journal-title":"Mol. 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