I need to get the transcription start site for several genes. However, the ncbiRefSeq file from the UCSC browser gives more than one TSS value for one gene (because some genes have several transcripts). If I need to choose one TSS value, how should I do this? How should I identify the more "common" TSS for a gene? Or if there's another approach to choose one TSS value, please comment below!
Thank you very much!