{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T15:03:31Z","timestamp":1788966211320,"version":"build-2803163510"},"reference-count":52,"publisher":"American Medical Association (AMA)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JAMA Pediatr"],"published-print":{"date-parts":[[2026,1,1]]},"abstract":"<jats:sec id=\"ab-poi250065-4\">\n                    <jats:title>Importance<\/jats:title>\n                    <jats:p>A narrow range of food consumption and\/or restricted eating is a core feature of avoidant\/restrictive food intake (ARFI) disorder. However, there is limited knowledge of developmental characteristics of children with ARFI and its etiological influences, which constrains research, prevention, and intervention efforts.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-poi250065-5\">\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To estimate the prevalence of ARFI phenotypes in a population-based sample, examine developmental characteristics across childhood, and investigate the genetic architecture of ARFI using genome-wide association analyses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-poi250065-6\">\n                    <jats:title>Design, Setting, and Participants<\/jats:title>\n                    <jats:p>This preregistered study used data from children born from 1999 to 2009 in the population-based Norwegian Mother, Father, and Child Cohort Study (MoBa), with mother-reported data on ARFI symptoms at 3 and 8 years and linkage with diagnostic data from population health registries. Data were analyzed from March 2024 to May 2025.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-poi250065-7\">\n                    <jats:title>Exposures<\/jats:title>\n                    <jats:p>Multiple items were used to identify children with broad ARFI. These children were subclassified into 3 groups based on symptom persistence: ARFI\u2013broad transient (only at age 3 years), emergent (only at age 8 years), and persistent (ages 3 and 8 years). Children in these groups with 1 or more indicators of clinical significance (eg, nutritional deficiency) were further classified into ARFI-clinical subgroups.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-poi250065-8\">\n                    <jats:title>Main Outcomes and Measures<\/jats:title>\n                    <jats:p>\n                      ARFI groups were compared across developmental characteristics from 6 months to 14 years. Genome-wide methods were used to examine single-nucleotide variant (SNV) heritability (SNV-\n                      <jats:italic toggle=\"yes\">h<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      ), conduct genetic association analyses, and quantify genetic correlations with other phenotypes.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-poi250065-9\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Of 35\u202f751 children with available ARFI assessments at 3 and 8 years (18\u202f236 male [51%]), the prevalence of ARFI\u2013broad persistent, transient, and emergent was 2129 (6.0%), 6338 (17.7%), and 3001 (8.4%), respectively. The prevalence of ARFI-clinical persistent, transient, and emergent was 624 (1.8%), 1157 (3.2%), and 484 (1.4%), respectively (2265 [6.3%] overall). Children with ARFI\u2013broad persistent exhibited more developmental difficulties compared with children with no ARFI. SNV-\n                      <jats:italic toggle=\"yes\">h<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      ranged from 8% to 16%. Two independent genome-wide significant loci were identified. For ARFI-clinical, a significant association was identified with\n                      <jats:italic toggle=\"yes\">ADCY3<\/jats:italic>\n                      (\n                      <jats:italic toggle=\"yes\">z<\/jats:italic>\n                      \u2009=\u20095.42;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u20093.03\u2009\u00d7\u200910\n                      <jats:sup>\u22128<\/jats:sup>\n                      ). Small to moderate genetic correlations were observed for ARFI-broad, ARFI-clinical and mental health, cognitive\/educational, anthropometric, food-associated, and gastrointestinal disorder phenotypes.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-poi250065-10\">\n                    <jats:title>Conclusions and Relevance<\/jats:title>\n                    <jats:p>This cohort study found that the prevalence of ARFI in the general pediatric population was substantial, and affected children had an associated elevated risk of developmental difficulties across multiple domains. Findings suggest a need for broad support interventions and advance understanding of the genetic underpinnings of ARFI.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1001\/jamapediatrics.2025.4786","type":"journal-article","created":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T16:31:12Z","timestamp":1764001872000},"page":"45","source":"Crossref","is-referenced-by-count":3,"title":["Prevalence, Characteristics, and Genetic Architecture of Avoidant\/Restrictive Food Intake Phenotypes"],"prefix":"10.1001","volume":"180","author":[{"given":"Ludvig Daae","family":"Bj\u00f8rndal","sequence":"first","affiliation":[{"name":"PROMENTA Research Center, Department of Psychology, University of Oslo, Oslo, Norway"},{"name":"Psychiatric Genetic Epidemiology Group, Research Department, Lovisenberg Diaconal Hospital, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elizabeth C.","family":"Corfield","sequence":"additional","affiliation":[{"name":"Psychiatric Genetic Epidemiology Group, Research Department, Lovisenberg Diaconal Hospital, Oslo, Norway"},{"name":"PsychGen Centre for Genetic Epidemiology and Mental Health, Norwegian Institute of Public Health, Oslo, Norway"},{"name":"MRC (Medical Research Council) Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laurie J.","family":"Hannigan","sequence":"additional","affiliation":[{"name":"Psychiatric Genetic Epidemiology Group, Research Department, Lovisenberg Diaconal Hospital, Oslo, Norway"},{"name":"PsychGen Centre for Genetic Epidemiology and Mental Health, Norwegian Institute of Public Health, Oslo, Norway"},{"name":"MRC (Medical Research Council) Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziada","family":"Ayorech","sequence":"additional","affiliation":[{"name":"PROMENTA Research Center, Department of Psychology, University of Oslo, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cynthia M.","family":"Bulik","sequence":"additional","affiliation":[{"name":"Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden"},{"name":"Department of Psychiatry, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill"},{"name":"Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hunna J.","family":"Watson","sequence":"additional","affiliation":[{"name":"Discipline of Psychology, School of Population Health, Curtin University, Perth, Western Australia, Australia"},{"name":"Department of Psychiatry, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill"},{"name":"Division of Paediatrics, School of Medicine, University of Western Australia, Perth, Western Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lisa","family":"Dinkler","sequence":"additional","affiliation":[{"name":"Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samuel J. 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