RNA Disruption Assay (RDA)-Breast Cancer Response Evaluation for Individualized Therapy

"1st core needle biopsy for RDA (2 specimens): Time Point: 35 +/-4 days after initiation of chemotherapy.~If no change is made to the therapy, a second biopsy (2 specimens) will be performed at 55 +/- 5 days after therapy initiation.~If there is a change of drugs, the second biopsy (2 specimens) will be performed at \~2-3 weeks after initiation of new drugs; Timing by type of drug schedule 3-weekly: at 16 days +/- 2 days, Bi-weekly: at day of 2nd dose preferably before drug admin., Weekly: at day of 4th dose preferably before drug admin."