Kelly is suffering from squamous cell carcinoma, but he has recently undergone tests to show that the cancer is isolated in his jaw and has not spread to other parts of his body.

WSJ: Former Bills QB Kelly battling cancer of the jaw

In Myriad's case, it's because the isolated DNA has a "markedly different chemical structure" from DNA within the body.

NPR: Can Human Genes Be Patented? Utah Firm At US Court

Accordingly, BRCA1 and BRCA2 in their isolated state are not the same molecules as DNA as it exists in the body.

FORBES: Private companies own your DNA - again