I only see patients with ages of 90 years or less in the GDC. Why is this?

HIPAA guidelines require that patients with ages greater than 89 years be aggregated into a single age category. This is to limit the ability to positively identify these individuals. In practice this will impact the values reported in several fields. We have chosen to accurately display the age at diagnosis, but fields that give dates or time periods after this benchmark may be compressed. This may include such fields as "Days to last follow up", "Days to last known disease status", "Days to recurrence", "Days to death", and "Year of death". Other fields found in clinical supplement files may also be impacted. In the Data Portal you will only see ages of less than or equal to 90. Individuals over 89 will all appear as 90 years old.