iterative-peak-merging

To merge ATAC-seq peaks from multiple samples, you can use iterative overlap merging to consolidate per-sample MACS2 summit files into a single fixed-width 501bp reference set, avoiding daisy-chaining while preserving cell-type-specific peaks for downstream quantification.

Fixed-width 501bp peaks are used in iterative overlap merging to center peaks on MACS2 summits, ensuring uniform downstream analysis and preventing daisy-chaining artifacts that occur with variable-width peak consolidation across multiple samples.

The best way to consolidate MACS2 summit files is through tiered merging, which performs within-group then across-group merging to preserve reproducibility and capture group-specific accessibility before downstream quantification with tools like DESeq2.

Yes, this iterative peak merging approach is designed for compatibility with downstream ATAC-seq pipeline tools including ArchR, chromVAR, and DESeq2, ensuring the consolidated 501bp peak set integrates smoothly with standard quantification workflows.

You need iterative within- and across-group merging when consolidating ATAC-seq peaks across cell types or conditions, as it applies reproducibility rules to preserve group-specific accessibility and ensure robust peak detection in the final reference set.

Reproducibility rules are integral to this peak merging method, ensuring that the tiered within-group and across-group merging process accurately preserves cell-type-specific accessibility and generates a robust 501bp peak set for downstream analysis.