Link to app: https://svnallan.shinyapps.io/heatmap_shiny/

First row is for Sample IDs which will be header, second row for sample annotations e.g Tumor, Normal which will be taken as factors to annotate the heatmap. Gene annotations (first column) are always followed by Control samples first e.g

Column1: Gene symbols

Column2: Control1

Column3: Control2

Column4: Tumor1

Column5: Tumor2

First column is for gene symbols/identifiers, cannot be duplicates. Housekeeping genes can be selected manually e.g ACTB, GAPDH, TUBB.