Depends on the tumor/cancer type. If it doesn't inform the treatment protocol then it's basically only useful for knowledge. However, more information is alway

Depends on the tumor/cancer type. If it doesn't inform the treatment protocol then it's basically only useful for knowledge. However, more information is always better and useful, especially in the future. So if you can do a CGP you should, or even better get complete sequencing done. But that latter is a 10k cost possibly more. Most cancer centers have a pipeline for treatment and also for research so usually you are in good hands. If a particular CGP is useful then they and the insurance will do it.