Table 1. Distribution of patient samples in the TCGA ATAC-seq data set among the 23 cancer types that are sorted in descending order by their percentage in the cohort.

Tumor type	Description	Patients (N = 404)	Percentage (%)
BRCA	Breast Invasive Carcinoma	74	18.3
COAD	Colon adenocarcinoma	38	9.4
KIRP	Kidney renal papillary cell carcinoma	34	8.4
PRAD	Prostate adenocarcinoma	26	6.4
LUAD	Lung adenocarcinoma	22	5.4
STAD	Stomach adenocarcinoma	21	5.2
ESCA	Esophageal carcinoma	18	4.5
LIHC	Liver hepatocellular carcinoma	17	4.2
KIRC	Kidney renal clear cell carcinoma	16	4.0
LUSC	Lung squamous cell carcinoma	16	4.0
THCA	Thyroid carcinoma	14	3.5
LGG	Brain lower grade glioma	13	3.2
SKCM	Skin cutaneous melanoma	13	3.2
UCEC	Uterine corpus endometrial carcinoma	13	3.2
BLCA	Bladder urothelial carcinoma	10	2.5
ACC	Adrenocortical carcinoma	9	2.2
GBM	Glioblastoma multiforme	9	2.2
HNSC	Head and neck squamous cell carcinoma	9	2.2
PCPG	Pheochromocytoma and paraganglioma	9	2.2
TGCT	Testicular germ cell tumors	9	2.2
MESO	Mesothelioma	7	1.7
CHOL	Cholangiocarcinoma	5	1.2
CESC	Cervical squamous cell carcinoma and endocervical adenocarcinoma	2	0.5