X chromosome inactivation escape and skewing are discussed in a narrative review covering autoimmune, neurodevelopmental, cardiovascular, and cancer conditions
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Key Takeaway
Note that this narrative review discusses XCI escape and skewing without reporting quantitative outcomes or safety data.
This narrative review examines the role of X chromosome inactivation escape and XCI skewing in female cells. The scope of the discussion extends to autoimmune disorders, neurodevelopmental disorders, cardiovascular diseases, and cancer. No specific study population, sample size, or setting is reported in the source text.
The authors do not provide primary or secondary outcome data, nor do they report adverse events or tolerability information. Consequently, no specific numerical results or pooled effect sizes are available for synthesis. The review focuses on the biological concepts rather than presenting trial-level evidence.
Limitations regarding the lack of reported data are inherent to the narrative format. The authors do not specify funding sources or conflicts of interest. Practice relevance is not explicitly defined in the provided text. Clinicians should interpret these qualitative discussions as background information rather than evidence for specific clinical decisions.
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View Original Abstract ↓
X chromosome inactivation (XCI) is a crucial genetic regulatory mechanism in female cells, wherein one of the two X chromosomes is randomly silenced to balance gene expression between sexes. Despite the overall silencing, approximately 15%–30% of human genes escape XCI, leading to their biallelic expression in females. Many studies have highlighted the phenomenon of XCI skewing, where the inactivation is preferentially biased towards one X chromosome. XCI escape and XCI skewing are significantly associated with various health issues, including autoimmune disorders, neurodevelopmental disorders (NDDS), cardiovascular diseases (CVD) and cancer, etc. This review aims to provide a comprehensive overview of the mechanisms underlying XCI, its roles across different genders and disease states, and to explore the intricate relationship between XCI and human health. By emphasizing the significance of understanding XCI, this article seeks to shed light on potential therapeutic targets and avenues for further research in the field.
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