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Updated: Jul 4, 2026
13:55
Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization
Published on: February 3, 2013
Defining Pseudo-Haplotype Analysis Reveals Multi-Gene Genetic Pattern Across BAF Chromatin Remodeling Complexes
Xiaowei Dong1,2, Neshatul Haque1, Jessica Wagenknecht1
1Computational Structural Genomics Laboratory, Linda T. and John A. Mellowes Center for Genomic Sciences and Precision Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
Biorxiv : the Preprint Server for Biology
|July 3, 2026
Summary
Most people carry genetic variations in BRG1-associated factor (BAF) genes, with many having multiple variants. This study introduces a new analysis to understand these complex BAF patterns and their disease implications.
Area of Science:
- Genetics
- Molecular Biology
- Human Disease
Background:
- BRG1-associated factor (BAF) complexes are vital for chromatin remodeling.
- Genetic variants in BAF genes are linked to cancers and developmental disorders.
- Understanding BAF genetic diversity and variant co-occurrence is crucial but incomplete.
Purpose of the Study:
- To develop and apply a novel framework for analyzing combined genetic variations within BAF genes.
- To quantify the prevalence of single and multiple variants in BAF genes within a cohort.
- To identify co-occurrence patterns of BAF variants across global populations.
Main Methods:
- Introduced a pseudo-haplotype analysis (PHA) framework.
- Combined multiple protein-coding sequence variants observed concurrently within individual samples.
- Analyzed variant patterns in a cohort to assess prevalence and co-occurrence.
Main Results:
- 78.44% of BAF pseudo-haplotype copies carry at least one coding variation.
- Over 56% of these contain at least two variants, and 32% contain three or more.
- 25.30% of unique pseudo-haplotypes were observed only once, indicating rare combinations.
Conclusions:
- A significant burden of multi-variant BAF configurations exists within individuals.
- Rare and private combinations of BAF variants are common.
- Considering complete individual variant configurations and population genetics is essential for disease association studies and precision medicine.
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