Definition and research guide
This page combines a MeSH definition, publication statistics and selected research abstracts. It is a starting point for reading the literature, not a medical textbook or a systematic evidence review.
Content available: 4 complete abstracts (829 words), 10 references. Full article text is not stored or reproduced here; follow the PMID, DOI or PMC links to read the original sources and their access terms.
Definition
A disorder caused by hemizygous microdeletion of about 28 genes on chromosome 7q11.23, including the elastin gene. Clinical manifestations include supravalvular aortic stenosis; mental retardation; elfin facies; impaired visuospatial constructive abilities; and transient hypercalcemia in infancy. The condition affects both sexes, with onset at birth or in early infancy.
Definition: NLM Medical Subject Headings (MeSH) scope note (Public domain (U.S. National Library of Medicine); attribution requested). View the MeSH record.
Also known as: Syndrome, Williams; Hypercalcemia-Supravalvar Aortic Stenosis; Aortic Stenoses, Hypercalcemia-Supravalvar; Aortic Stenosis, Hypercalcemia-Supravalvar; Hypercalcemia-Supravalvar Aortic Stenoses; Hypercalcemia Supravalvar Aortic Stenosis; Stenoses, Hypercalcemia-Supravalvar Aortic; Stenosis, Hypercalcemia-Supravalvar Aortic.
Where it fits in the MeSH classification
- Broader topics
- Intellectual Disability; Aortic Stenosis, Supravalvular; Chromosome Disorders
- See also
- Elastin; Intellectual Disability
Related concepts
- Elastin
- Supravalvular Aortic Stenosis
- Mental Retardation
- Hypercalcemia
Research landscape
PubMed indexes 2,051 records tagged with the MeSH heading “Williams Syndrome” (counts retrieved 2026-10-29). 360 of them (17.6%) were published from 2020 onward, and the busiest period so far is 2010-2019 with 804 records.
Reviews account for 237 records (11.6%) and meta-analyses for 8. Randomized controlled trials number 12 (0.6%) as a share of all records on the topic. Randomized trials make up only a small share of this literature, so much of what is known comes from laboratory, observational or descriptive work.
Show the data
| Period | Records |
|---|---|
| through 1999 | 212 |
| 2000-2009 | 675 |
| 2010-2019 | 804 |
| 2020 onward | 360 |
Publication-type chart data
| Type | Records | Share |
|---|---|---|
| Reviews | 237 | 11.6% |
| Meta-analyses | 8 | 0.4% |
| Randomized controlled trials | 12 | 0.6% |
Method: PubMed query "Williams Syndrome"[MeSH Terms] with publication-type and date filters, retrieved 2026-10-29.
Reading the evidence in rare and inherited diseases
Rare conditions are difficult to study: few patients means small studies, case reports and registries are common, and randomized trials are the exception. Small samples limit precision and can exaggerate effects, and cases reported in the literature may be the most severe or unusual. Evidence from many small studies is best read together. Check how patients were identified, how many were included and how long they were followed.
Evidence from open-access studies
These open-access studies come from PubMed’s best-match results for this heading (papers whose main topic it is), ranked here by citation count, with one recent addition. Each abstract is reproduced in full under its recorded open licence so that you can read the authors’ own words. They illustrate the literature; they are not a systematic summary of it. Citation counts measure attention, not reliability or clinical benefit.
| Study / authors | Year | Source label / design | Europe PMC citations | Licence / source |
|---|---|---|---|---|
| Oxytocin and vasopressin are dysregulated in Williams Syndrome, a genetic disorder affecting social behavior | 2012 | Research article Design not recorded in structured metadata | 77 | cc by PMID 22719898 · DOI · PMC3373592 |
| The Tumor Suppressor BCL7B Functions in the Wnt Signaling Pathway | 2015 | Research article Design not recorded in structured metadata | 38 | cc by PMID 25569233 · DOI · PMC4287490 |
| Anxiety in Williams Syndrome: The Role of Social Behaviour, Executive Functions and Change Over Time | 2018 | Research article Design not recorded in structured metadata | 33 | cc by PMID 29124472 · DOI · PMC5847160 |
| Prenatally Diagnosed 7q11.23 Copy Number Variations: A Retrospective Case Series | 2026 | Research article Design not recorded in structured metadata | 1 | cc by PMID 41494975 · DOI · PMC12774791 |
Oxytocin and vasopressin are dysregulated in Williams Syndrome, a genetic disorder affecting social behavior [1]
Abstract reading summary — source excerpts
- Opening excerpt
- The molecular and neural mechanisms regulating human social-emotional behaviors are fundamentally important but largely unknown; unraveling these requires a genetic systems neuroscience analysis of human models.
- Closing excerpt
- They also offer insight for translating genetic and neuroendocrine knowledge into treatments for disorders of social behavior.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (281 words)
The molecular and neural mechanisms regulating human social-emotional behaviors are fundamentally important but largely unknown; unraveling these requires a genetic systems neuroscience analysis of human models. Williams Syndrome (WS), a condition caused by deletion of ~28 genes, is associated with a gregarious personality, strong drive to approach strangers, difficult peer interactions, and attraction to music. WS provides a unique opportunity to identify endogenous human gene-behavior mechanisms. Social neuropeptides including oxytocin (OT) and arginine vasopressin (AVP) regulate reproductive and social behaviors in mammals, and we reasoned that these might mediate the features of WS. Here we established blood levels of OT and AVP in WS and controls at baseline, and at multiple timepoints following a positive emotional intervention (music), and a negative physical stressor (cold). We also related these levels to standardized indices of social behavior. Results revealed significantly higher median levels of OT in WS versus controls at baseline, with a less marked increase in AVP. Further, in WS, OT and AVP increased in response to music and to cold, with greater variability and an amplified peak release compared to controls. In WS, baseline OT but not AVP, was correlated positively with approach, but negatively with adaptive social behaviors. These results indicate that WS deleted genes perturb hypothalamic-pituitary release not only of OT but also of AVP, implicating more complex neuropeptide circuitry for WS features and providing evidence for their roles in endogenous regulation of human social behavior. The data suggest a possible biological basis for amygdalar involvement, for increased anxiety, and for the paradox of increased approach but poor social relationships in WS. They also offer insight for translating genetic and neuroendocrine knowledge into treatments for disorders of social behavior.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 22719898 · DOI · PMC3373592
The Tumor Suppressor BCL7B Functions in the Wnt Signaling Pathway [2]
Abstract reading summary — source excerpts
- Opening excerpt
- Human BCL7 gene family consists of BCL7A, BCL7B, and BCL7C.
- Closing excerpt
- This study may implicate a risk of malignancies with BCL7B-deficiency, such as Williams-Beuren syndrome.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (249 words)
Human BCL7 gene family consists of BCL7A, BCL7B, and BCL7C. A number of clinical studies have reported that BCL7 family is involved in cancer incidence, progression, and development. Among them, BCL7B, located on chromosome 7q11.23, is one of the deleted genes in patients with Williams-Beuren syndrome. Although several studies have suggested that malignant diseases occurring in patients with Williams-Beuren syndrome are associated with aberrations in BCL7B, little is known regarding the function of this gene at the cellular level. In this study, we focused on bcl-7, which is the only homolog of BCL7 gene family in Caenorhabditis elegans, and analyzed bcl-7 deletion mutants. As a result, we found that bcl-7 is required for the asymmetric differentiation of epithelial seam cells, which have self-renewal properties as stem cells and divide asymmetrically through the WNT pathway. Distal tip cell development, which is regulated by the WNT pathway in Caenorhabditis elegans, was also affected in bcl-7-knockout mutants. Interestingly, bcl-7 mutants exhibited nuclear enlargement, reminiscent of the anaplastic features of malignant cells. Furthermore, in KATOIII human gastric cancer cells, BCL7B knockdown induced nuclear enlargement, promoted the multinuclei phenotype and suppressed cell death. In addition, this study showed that BCL7B negatively regulates the Wnt-signaling pathway and positively regulates the apoptotic pathway. Taken together, our data indicate that BCL7B/BCL-7 has some roles in maintaining the structure of nuclei and is involved in the modulation of multiple pathways, including Wnt and apoptosis. This study may implicate a risk of malignancies with BCL7B-deficiency, such as Williams-Beuren syndrome.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 25569233 · DOI · PMC4287490
Anxiety in Williams Syndrome: The Role of Social Behaviour, Executive Functions and Change Over Time [3]
Abstract reading summary — source excerpts
- Opening excerpt
- Anxiety is a prevalent mental health issue for individuals with Williams syndrome (WS).
- Closing excerpt
- This timely investigation provides new insights into anxiety in WS and highlights potential areas for intervention.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (120 words)
Anxiety is a prevalent mental health issue for individuals with Williams syndrome (WS). Relatively little is known about the developmental course of anxiety, or how it links with core features of WS, namely social and executive functioning (EF). In this study, parent-reports of anxiety were compared across a 4-year period (N = 17), and links between anxiety, social and EF were explored from concurrent parent-reports (N = 26). Results indicated that high anxiety persisted over time, and anxiety was related to impairments in both social and executive functioning. Importantly, results indicated that impairments in EFs may drive the links between anxiety and social functioning. This timely investigation provides new insights into anxiety in WS and highlights potential areas for intervention.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 29124472 · DOI · PMC5847160
Prenatally Diagnosed 7q11.23 Copy Number Variations: A Retrospective Case Series [4]
Abstract reading summary — source excerpts
- Opening excerpt
- BackgroundWilliams-Beuren syndrome (WBS; OMIM #194050), caused by 7q11.
- Closing excerpt
- Advanced genomic testing and inheritance pattern analysis are critical for accurate diagnosis and counseling.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (179 words)
BackgroundWilliams-Beuren syndrome (WBS; OMIM #194050), caused by 7q11.23 deletions, is well-characterized postnatally, but prenatal manifestations remain poorly defined. This study aims to delineate the prenatal phenotypes, inheritance patterns, and outcomes of 7q11.23 copy number variations (CNVs).MethodsA retrospective study of 20 prenatal cases with 7q11.23 CNVs diagnosed by SNP array or CNV sequencing (CNV-seq) was conducted. Clinical data, including ultrasound findings, genetic results, and pregnancy outcomes, were analyzed.ResultsClassic 7q11.23 deletions (1.42 Mb median size) were associated with ultrasound anomalies in 100% of cases (11/11), predominantly cardiovascular defects (36.4%, 4/11) and growth restriction (18.2%, 2/11). While 7q11.23 duplications (1.42-3.03 Mb) were associated with anomalies in 50% of cases (3/6), including cleft palate and ventriculomegaly. Inheritance pattern analysis revealed 50% of deletions (6/12) and 42.9% of duplications (3/7) were inherited, either from phenotypically normal or abnormal parents. Termination of pregnancy (TOP) occurred in 76.5% (13/17) of ongoing pregnancies, primarily for de novo CNVs. Four live births involved inherited CNVs.Conclusion7q11.23 CNVs exhibit significant prenatal phenotypic variability and inheritance heterogeneity. Advanced genomic testing and inheritance pattern analysis are critical for accurate diagnosis and counseling.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 41494975 · DOI · PMC12774791
Key reviews and meta-analyses
The most cited review-type papers among PubMed’s best-match results for this heading, listed with bibliographic details only. Follow the links for the full text and access terms.
- Research article Williams-Beuren syndrome [5]
- Research article I. The neurocognitive profile of Williams Syndrome: a complex pattern of strengths and weaknesses [6]
- Research article Research Review: Williams syndrome: a critical review of the cognitive, behavioral, and neuroanatomical phenotype [7]
- Research article Neural mechanisms in Williams syndrome: a unique window to genetic influences on cognition and behaviour [8]
- Research article Bridging cognition, the brain and molecular genetics: evidence from Williams syndrome [9]
- Research article Williams syndrome [10]
References
- Dai L, Carter CS, Ying J, Bellugi U, Pournajafi-Nazarloo H, Korenberg JR. Oxytocin and vasopressin are dysregulated in Williams Syndrome, a genetic disorder affecting social behavior. . 2012. PMID 22719898 · DOI · PMC3373592
- Uehara T, Uehara T, Kage-Nakadai E, Yoshina S, Imae R, Mitani S. The Tumor Suppressor BCL7B Functions in the Wnt Signaling Pathway. . 2015. PMID 25569233 · DOI · PMC4287490
- Ng-Cordell E, Hanley M, Kelly A, Riby DM. Anxiety in Williams Syndrome: The Role of Social Behaviour, Executive Functions and Change Over Time. . 2018. PMID 29124472 · DOI · PMC5847160
- Yan J, Liu Z, Yi S, Liu N. Prenatally Diagnosed 7q11.23 Copy Number Variations: A Retrospective Case Series. . 2026. PMID 41494975 · DOI · PMC12774791
- Pober BR. Williams-Beuren syndrome. N Engl J Med. 2010. PMID 20089974 · DOI
- Bellugi U, Lichtenberger L, Jones W, Lai Z, St George M. I. The neurocognitive profile of Williams Syndrome: a complex pattern of strengths and weaknesses. J Cogn Neurosci. 2000. PMID 10953231 · DOI
- Martens MA, Wilson SJ, Reutens DC. Research Review: Williams syndrome: a critical review of the cognitive, behavioral, and neuroanatomical phenotype. J Child Psychol Psychiatry. 2008. PMID 18489677 · DOI
- Meyer-Lindenberg A, Mervis CB, Berman KF. Neural mechanisms in Williams syndrome: a unique window to genetic influences on cognition and behaviour. Nat Rev Neurosci. 2006. PMID 16760918 · DOI
- Bellugi U, Lichtenberger L, Mills D, Galaburda A, Korenberg JR. Bridging cognition, the brain and molecular genetics: evidence from Williams syndrome. Trends Neurosci. 1999. PMID 10322491 · DOI
- Kozel BA, Barak B, Kim CA, Mervis CB, Osborne LR, Porter M, et al.. Williams syndrome. Nat Rev Dis Primers. 2021. PMID 34140529 · DOI · PMC9437774
About this article
- Sources
- NLM Medical Subject Headings (definition, synonyms); NCBI PubMed (counts, identifiers); Europe PMC (open-access abstracts and citation counts).
- Verification
- Every reference was resolved against PubMed on 2026-10-31; title, year and DOI matched.
- Review state
- automated source verified; no human expert review has been recorded yet.
- Version
- 1, last updated 2026-10-29.
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Evidence strength
EvidenceHelix's computed view of the study designs behind this topic: how common meta-analyses, randomized trials and reviews are, how recent the literature is, and a plain-language reading. It describes the design mix of the literature. It is not a quality appraisal of any study, and it is not medical advice.