Table 1.

Summary of available eccDNA databases.

	CircleBase	eccDB	eccDNAdb	eccDNA Atlas	TeCD
Human	601,112	767,981	1270	637,241	200,532
Average size (human) (bp)	36,477	492,451	25,483,476	43,579	2154
Median size (human) (bp)	323	340	4,203,339	329	379
eccDNAs harboring oncogenes (human)	17,742	37,300	568	19,397	4338
eccDNAs harboring oncogenes (human) (%)	2.95 %	4.86 %	44.72 %	3.04 %	2.16 %
Unique oncogenes on eccDNAs (human)	764	766	687	765	582
Multiple species		√		√	√
Gene expression		√	√	√
Gene ontology annotation	√		√	√
Pathway enrichment analysis	√			√
Survival analysis		√	√	√
Blast		√		√	√
Accessible chromatin regions	√	√	√	√
Intrachromosomal interactions	√	√
Interchromosomal interactions		√
Transcription factors (TFs)	√	√
Enhancers	√	√		√
Super enhancers	√	√		√
Risk single-nucleotide polymorphisms (SNPs)	√	√		√
Expression quantitative trait locus (eQTL)	√	√		√
ChromHMM states	√	√
Histone modifications	√			√
DNA methylation positions	√	√		√