Patients undergo tumor, lymph node, bone marrow, or skin biopsy, and peripheral blood mononuclear cells collection. Samples are submitted to the AIDS Malignancy Consortium (AMC) Biorepository and transferred to the AIDS and Cancer Specimen Resource (ACSR). Samples are then analyzed by the Genome Science Center of British Columbia (GSC-BC) and the HIV+ Tumor Molecular Characterization Project (HTMCP) for full genomic sequencing analysis that may include, but are not limited to, array-based gene expression profiling, comparative genome hybridization, and single nucleotide polymorphism studies by flow cytometry, cytogenetics, and molecular studies. Patients' clinical data, demographics, and treatment given are also collected prospectively in order to record treatment outcome and toxicity.