The trial treatment will consist of a pretreatment 18 gauge core biopsy of locally advanced or metastatic cutaneous or subcutaneous lesions. The biopsies will be stabilized on site in RNAlater and shipped to ATAGC by courier at ambient temperature. RNA will be extracted using Trizol-chloroform method and purified using RNAEasy micro kit (Qiagen). RNA samples passing the quality control test (Agilent Bioanalyzer) will be labeled, hybridized to PrimeView Affymetrix microarrays and scanned according to the manufacturer's protocol. Resulting ".CEL" files will be used for the analysis of the global gene expression.