{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T05:58:28Z","timestamp":1780466308156,"version":"3.54.1"},"reference-count":52,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2020,6,5]],"date-time":"2020-06-05T00:00:00Z","timestamp":1591315200000},"content-version":"vor","delay-in-days":4,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Emory University Laney Graduate School Professional Development Support Funds"},{"name":"The Ryan Scovell Memorial XXYY Research Fund"},{"name":"The XXYY Project"},{"name":"Association for X and Y Chromosome Variations"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["American J of Med Genetics Pt C"],"published-print":{"date-parts":[[2020,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>While the most common Sex Chromosome Aneuploidy (SCA) is 47,XXY, other variations, such as 48,XXYY, are less studied, perhaps due to its rarity. 48,XXYY occurs with an estimated prevalence of 1:18,000\u201340,000 male births. This SCA is associated with a variety of complex physical, psychological, and neuroanatomical findings. The purpose of this integrative review is to summarize the available evidence related to 48,XXYY and identify gaps in the literature. This study utilized integrative review and PRISMA\u2010guided methodology to search six databases for information pertaining to 48,XXYY. There were no exclusion criteria related to design methodology, given the paucity of available research. Among 397 articles reviewed for potential inclusion, 30 articles remained after inclusion and exclusion criteria were applied. Seven of these articles concentrated solely on participants with 48,XXYY. Literature was summarized into categories of physical phenotype, psychosocial, behavioral, neurocognitive, and brain function. Clinical description of 48,XXYY has evolved over time to develop a deeper understanding of this complex disorder. Large gaps remain, especially a lack of experimental studies, clinical guidelines, and treatments. Additionally, few studies explore methodologies such as interviews or self\u2010report surveys in this population. 48,XXYY presents with a wide spectrum of physical, psychological, and neurocognitive symptoms, and frequently requires complex interdisciplinary care. In order to better understand this disorder and to appropriately treat the individuals affected by it, future research should focus on experimental studies and research that utilizes a variety of methods, including participant interviews and patient\u2010report surveys.<\/jats:p>","DOI":"10.1002\/ajmg.c.31789","type":"journal-article","created":{"date-parts":[[2020,6,5]],"date-time":"2020-06-05T12:56:03Z","timestamp":1591361763000},"page":"386-403","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Rare sex chromosome variation 48,<scp>XXYY<\/scp>: An integrative review"],"prefix":"10.1002","volume":"184","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6632-4150","authenticated-orcid":false,"given":"Amy A.","family":"Blumling","sequence":"first","affiliation":[{"name":"Nell Hodgson Woodruff School of Nursing Emory University  Atlanta Georgia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kristy","family":"Martyn","sequence":"additional","affiliation":[{"name":"Nell Hodgson Woodruff School of Nursing Emory University  Atlanta Georgia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amy","family":"Talboy","sequence":"additional","affiliation":[{"name":"Nell Hodgson Woodruff School of Nursing Emory University  Atlanta Georgia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sharron","family":"Close","sequence":"additional","affiliation":[{"name":"Nell Hodgson Woodruff School of Nursing Emory University  Atlanta Georgia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,6,5]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.5152\/TurkPediatriArs.2016.1551"},{"key":"e_1_2_8_3_1","first-page":"575","article-title":"The XXYY variant of Klinefelter's syndrome","volume":"90","author":"Barr M. 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