Table 1. Snap frozen and FFPE tissue samples used for sequencing.

Sample ID	Tissue	Age (years)	Ischemia (min.)	Fixation method
ID-1.0	Breast - normal	1	<20	Snap frozen
ID-1.1	Breast - normal	1	<20	24 hrs formaldehyde
ID-1.3	Breast - normal	1	60	24 hrs formaldehyde
ID-1.7	Breast - normal	1	360	24 hrs formaldehyde
ID-1.6	Breast - normal	1	180	72 hrs formaldehyde
ID-1.8	Breast - normal	1	360	72 hrs formaldehyde
ID-22.1	Breast - normal	18	<20	Snap frozen
ID-22.2	Breast - normal	18	<20	24 hrs formaldehyde
ID-02.15	Breast -tumor	14	<20	Snap frozen
ID-02.48	Breast - tumor	14	<20	24 hrs formaldehyde