The ARID1B spectrum in 143 patients: from nonsyndromic intellectual disability to Coffin-Siris syndrome
- PMID: 30349098
- PMCID: PMC6752273
- DOI: 10.1038/s41436-018-0330-z
The ARID1B spectrum in 143 patients: from nonsyndromic intellectual disability to Coffin-Siris syndrome
Erratum in
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Correction: The ARID1B spectrum in 143 patients: from nonsyndromic intellectual disability to Coffin-Siris syndrome.Genet Med. 2019 Sep;21(9):2160-2161. doi: 10.1038/s41436-018-0368-y. Genet Med. 2019. PMID: 30696996 Free PMC article.
Abstract
Purpose: Pathogenic variants in ARID1B are one of the most frequent causes of intellectual disability (ID) as determined by large-scale exome sequencing studies. Most studies published thus far describe clinically diagnosed Coffin-Siris patients (ARID1B-CSS) and it is unclear whether these data are representative for patients identified through sequencing of unbiased ID cohorts (ARID1B-ID). We therefore sought to determine genotypic and phenotypic differences between ARID1B-ID and ARID1B-CSS. In parallel, we investigated the effect of different methods of phenotype reporting.
Methods: Clinicians entered clinical data in an extensive web-based survey.
Results: 79 ARID1B-CSS and 64 ARID1B-ID patients were included. CSS-associated dysmorphic features, such as thick eyebrows, long eyelashes, thick alae nasi, long and/or broad philtrum, small nails and small or absent fifth distal phalanx and hypertrichosis, were observed significantly more often (p < 0.001) in ARID1B-CSS patients. No other significant differences were identified.
Conclusion: There are only minor differences between ARID1B-ID and ARID1B-CSS patients. ARID1B-related disorders seem to consist of a spectrum, and patients should be managed similarly. We demonstrated that data collection methods without an explicit option to report the absence of a feature (such as most Human Phenotype Ontology-based methods) tended to underestimate gene-related features.
Keywords: ARID1B; Coffin–Siris syndrome; bias; intellectual disability.
Conflict of interest statement
The authors declare no conflicts of interest.
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Comment in
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Response to Gorokhova et al.Genet Med. 2019 Nov;21(11):2656-2657. doi: 10.1038/s41436-019-0547-5. Epub 2019 May 20. Genet Med. 2019. PMID: 31105272 No abstract available.
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Significant contribution of intragenic deletions to ARID1B mutation spectrum.Genet Med. 2019 Nov;21(11):2654-2655. doi: 10.1038/s41436-019-0546-6. Epub 2019 May 20. Genet Med. 2019. PMID: 31105273 No abstract available.
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