It is a breeding ground for aggressive tumors such as in ovarian and gastrointestinal cancer. (sciencedaily.com)
But by the same token, if it's a particularly aggressive tumor, then it's possible they will live less than a year. (scientificamerican.com)
In their paper published online in the Journal of Clinical Oncology, the researchers report that several genetic characteristics of more aggressive tumors were significantly more prevalent in African American patients and appeared to be associated with a greater risk of tumor recurrence. (sciencedaily.com)