It is anonymized when its used for research purposes, but you still would want to have some key to match it up to the patient should they have more information

It is anonymized when its used for research purposes, but you still would want to have some key to match it up to the patient should they have more information to add down the road. Say the patient took some drug for their leukemia and had remission, that is valuable metadata to include along with the raw sequence data in a database.