hello, i download a methylation array result from TCGA, the data level is 3, I found my aim gene having 25 values for corresponding probes in one tissue sample. How to combine these values to one value? I tried mean and median analysis, any of which is not the value got from cBioportal for this gene methylation value in the same sample. as i want to know the relationship between a aim gene expression with methylation status.how to process data and how cBioportal manage these? Thanks a lot!