How best to handle multiple probes for single genes in survival analysis of Geo data

I imported some microarray data from Geo and was able to write a for loop that plots survival curves for high/low expression of each probe corresponding to a specific gene. Now I am interested in generating a single curve with respect to the gene itself not just the individual probes. I have already inspected the browser tracks corresponding to each probe and there is a high degree of overlap between different probes for a particular tx. So my thought is that this is actually possible, but I am not entirely sure as I am new to microarray analysis

Does anyone have experience with this process? And what approaches/tools did you find helpful?