Table 4. Statistics of alternative splicing events in bladder cancer.

	Counts		Percentage
Pattern of alternative splicing	Tumor	Non-tumor	Tumor	Non-tumor
A3SS: Alternative 3′splice sites	3293	2950	12.8%	12.4%
A5SS: Alternative 5′splice sites	4185	3770	16.3%	15.9%
AFE: Alternative first exons	470	349	1.8%	1.5%
MXE: Mutually exclusive exons	681	657	2.7%	2.8%
RI: Retained introns	2666	2206	10.4%	9.3%
SE: Skipped exons	12697	11787	49.4%	49.6%
TUTR: Tandem 3′UTRs	1703	2050	6.6%	8.6%
TOTAL	25695	23769	100.0%	100.0%