Transripts will be merged if the following conditions are met (convert "transcript leve" BED file into "gene level" BED file): 1) Have the same gene symbol 2) Locate on the same chromosome and the same strand 3) Genome coordinates are overlapped *union.bed.gz: "Gene level" BED file, for example: chr17 42282400 42298994 UBTF 0 - 42284609 42298994 255,0,0 23 2335,144,72,48,190,89,111,156,156,114,42,142,134,111,121,65,156,84,176,125,229,143,426 0,2421,2666,2831,4319,4612,5091,5285,5759,6006,6257,6573,6840,7311,7786,8185,10621,10873,11496,13139,14412,15707,16168 chr18 32556891 32723432 MAPRE2 0 + 32558481 32723432 255,0,0 10 152,298,62,407,128,146,214,140,159,3174 0,1316,28564,64432,93267,120518,125018,150020,155104,163367 *union.transcript_id.txt.gz: Correspondence between "gene ID" and "transcript ID", for example: UBTF NM_014233,NM_001076683,NM_001076684,NR_045058 MAPRE2 NM_001256420,NM_014268,NM_001143826,NM_001143827,NR_046177