I have some datasets that have prob IDs and before performing gene set enrichment analysis, I need to map prob IDs to Entrez IDs. The problem is that after mapping, there are multiple prob Ids (multiple rows) per gene. I would like to know what are the best practices for picking one row per gene?
Since I wanna use gsea to analyze my data, I tried to find something about this in their resources, however, I wasnt successful to find what strategy they recommend for mapping from multiple prob IDs to a single gene ID.
If you have any idea, resources, or information about recommended solutions, please guide me.