FCC coverage at ATAC/DHS regions

STARR-seq and Tiling MPRA

fragment counts across accessible regions

regions with extreme low fragments were filtered using EdgeR

the log2 fold change of each regions were calculated using DEseq2

The z score is calculated by standardizing the log2 fold change.

Lenti-MPRA

The log2 fold change were acquired from the Agarwal et al., 2025. The z score is calculated by standardizing the log2 fold change.

CRISPRi-HCR FlowFISH

The log2 fold change of guides were standardized to z scores for each target respectively.

The mean of z scores were calculated for each target across accessible regions by excluding safe-targeting guides.

Coverage of CRISPRi-HCR FlowFISH across accessbile regions:

Safe-targeting guides Removed:

CRISPRi-Growth screen

The log2 fold change of guides were standardized to z scores

The mean of z scores were calculated for each target across accessible regions.

Summarize region coverage

Genome coverage of FCC assays

number of ATAC regions screened in each assay
Assay ATAC (Overlap) ATAC (Union)
ATAC 150,041 246,852
ASTARR 150,040 246,850
WSTARR 146,594 241,031
CRISPRi-Growth 72,743 80,288
LMPRA 61,478 68,497
TMPRA 1,148 1,722
CRISPRi-HCRFF 925 1,330

Table: ratio = divided by total ATAC

Set ATAC as 100%; how many percentage of regions are screened by each assay?

Assay ATAC (Overlap) ATAC (Union)
ASTARR 100% 100%
WSTARR 98% 98%
CRISPRi-Growth 48% 33%
LMPRA 41% 28%
TMPRA 0.8% 0.7%
CRISPRi-HCRFF 0.6% 0.5%