{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T18:16:28Z","timestamp":1783016188506,"version":"3.54.6"},"reference-count":35,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2026,5,10]],"date-time":"2026-05-10T00:00:00Z","timestamp":1778371200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,5,10]],"date-time":"2026-05-10T00:00:00Z","timestamp":1778371200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100006108","name":"National Center for Advancing Translational Sciences","doi-asserted-by":"publisher","award":["1UM1TR004926\u201001"],"award-info":[{"award-number":["1UM1TR004926\u201001"]}],"id":[{"id":"10.13039\/100006108","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J intellect Disabil Res"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Down syndrome regression disorder (DSRD) is a rare phenomenon of regression impacting individuals with Down syndrome (DS), occurring in adolescence to early adulthood and characterized by acute\u2010to\u2010subacute deterioration of functioning. Cognitive and behavioural phenotypes associated with DSRD have been examined using physician checklists but not yet through direct assessments or caregiver questionnaires. The goal of this initial study was to explore the cognitive and behavioural features of those with DS and regression (DS+regression) through direct assessment and informant questionnaires.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      A total of 25 individuals (DS+regression\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200913 and DS\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200912) participated in the study. Participants were administered a standardized measure of intellectual functioning, and caregivers completed questionnaires assessing executive functioning, mood, and adaptive functioning.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The two groups did not significantly differ on a standardized measure of intellectual functioning, although these results were based upon a reduced sample size (DS+regression\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u20098), which limited interpretability. Results tentatively suggest that caregivers of those with DS+regression endorsed concern for executive functioning, mood and adaptive functioning in comparison to those without regression.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>This study provides emerging evidence of cognitive and behavioural features reported by caregivers that may be associated with DSRD, with the goal of informing future studies with larger sample sizes. Our findings also emphasize the importance of evaluations for patients with DSRD, and the utility of caregiver\u2010report measures to identify symptoms of regression for treatment planning.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/jir.70118","type":"journal-article","created":{"date-parts":[[2026,5,11]],"date-time":"2026-05-11T02:03:32Z","timestamp":1778465012000},"page":"801-810","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["An Examination of the Cognitive and Behavioural Features Associated With Down Syndrome Regression Disorder"],"prefix":"10.1111","volume":"70","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1444-4679","authenticated-orcid":false,"given":"Mary","family":"Godfrey","sequence":"first","affiliation":[{"name":"Kennedy Krieger Institute  Baltimore Maryland USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9735-8791","authenticated-orcid":false,"given":"Kyung","family":"Paik","sequence":"additional","affiliation":[{"name":"Pia Neuropsychiatry  McLean Virginia USA"},{"name":"School of Medicine Johns Hopkins  Baltimore Maryland USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3009-3730","authenticated-orcid":false,"given":"George","family":"Capone","sequence":"additional","affiliation":[{"name":"Kennedy Krieger Institute  Baltimore Maryland USA"},{"name":"School of Medicine Johns Hopkins  Baltimore Maryland USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,5,10]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.c.32077"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600\u20100447.1996.tb09814.x"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.a.36052"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/dmcn.14127"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.4088\/JCP.21m14238"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.a.37001"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1097\/DBP.0b013e3181d5aa6d"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1352\/1944\u20107558\u2010125.6.434"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jad.2019.05.059"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrdd.20159"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1023\/b:jadd.0000005999.27178.55"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140\u20106736(20)30689\u20109"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.2147\/NDT.S77307"},{"key":"e_1_2_9_15_1","volume-title":"Frontal Systems Behavior Scale","author":"Grace J.","year":"2001"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.c.31439"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1186\/s11689\u2010019\u20109279\u20108"},{"key":"e_1_2_9_18_1","volume-title":"Adaptive Behavior Assessment System \u2013 Second Edition","author":"Harrison P.","year":"2003"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1001\/jamaneurol.2018.3616"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.eclinm.2022.101808"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cortex.2019.02.022"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.3390\/brainsci7060057"},{"key":"e_1_2_9_23_1","volume-title":"Stanford\u2010Binet Intelligence Scales\u2010Fifth Edition","author":"Roid G. H.","year":"2003"},{"key":"e_1_2_9_24_1","volume-title":"The Handbook of Research Synthesis","author":"Rosenthal R.","year":"1994"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2019\u20102939"},{"key":"e_1_2_9_26_1","doi-asserted-by":"publisher","DOI":"10.1186\/s11689\u2010022\u201009446\u2010w"},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.3389\/fneur.2022.940175"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.a.62922"},{"key":"e_1_2_9_29_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41436\u2010019\u20100706\u20108"},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpsyt.2022.877566"},{"key":"e_1_2_9_31_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10803\u2010024\u201006249\u2010x"},{"key":"e_1_2_9_32_1","doi-asserted-by":"publisher","DOI":"10.1097\/DBP.0000000000000401"},{"key":"e_1_2_9_33_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.yebeh.2018.08.008"},{"key":"e_1_2_9_34_1","doi-asserted-by":"publisher","DOI":"10.3390\/brainsci11091197"},{"key":"e_1_2_9_35_1","doi-asserted-by":"publisher","DOI":"10.1177\/0883073814554654"},{"key":"e_1_2_9_36_1","doi-asserted-by":"publisher","DOI":"10.1352\/0895\u20108017(2002)107<0161:IATPOA>2.0.CO;2"}],"container-title":["Journal of Intellectual Disability Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jir.70118","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/jir.70118","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jir.70118","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T17:20:53Z","timestamp":1783012853000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/jir.70118"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,5,10]]},"references-count":35,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2026,8]]}},"alternative-id":["10.1111\/jir.70118"],"URL":"https:\/\/doi.org\/10.1111\/jir.70118","archive":["Portico"],"relation":{},"ISSN":["0964-2633","1365-2788"],"issn-type":[{"value":"0964-2633","type":"print"},{"value":"1365-2788","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,5,10]]},"assertion":[{"value":"2025-12-31","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-04-22","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-05-10","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}