V. To identify specific mutations in tumor deoxyribonucleic acid (DNA) in comparison to adjacent tissue and germ line DNA procured prior to, during, and subsequent to neoadjuvant chemotherapy, and to detect/measure, as feasible, the presence of such mutations in fragmented circulating DNA from plasma, and to correlate these mutations with the presence/characteristics of circulating tumor cells in order to identify prognostic and predictive indicators of persisting/relapsed disease and targets for therapy.