PMID- 10600331 OWN - NLM STAT- MEDLINE DCOM- 20000104 LR - 20041117 IS - 1521-6616 (Print) IS - 1521-6616 (Linking) VI - 93 IP - 3 DP - 1999 Dec TI - Treatment with tumor necrosis factor-alpha and granulocyte-macrophage colony-stimulating factor increases epidermal Langerhans' cell numbers in cancer patients. PG - 209-21 AB - Dendritic cells (DCs) initiate primary and stimulate secondary T-cell responses. We conducted a phase I trial of tumor necrosis factor (TNF-alpha) and granulocyte-macrophage colony-stimulating factor (GM-CSF) in patients with cancer to increase DCs in peripheral blood or skin based on in vitro data that showed that CD34(+) hematopoietic precursors require these cytokines to mature into functional antigen-presenting DCs. Eleven patients were treated for 7 days with GM-CSF, 125 microg/m(2) twice daily as subcutaneous injections, and TNF-alpha as a continuous infusion at dose levels of 25, 50, or 100 microg/m(2)/day. The maximum tolerated dose of TNF-alpha was 50 microg/m(2)/day with this dose of GM-CSF; dose-limiting toxicities occurred in both patients treated with 100 microg/m(2)/day. One became thrombocytopenic and the other had transient confusion. Epidermal Langerhans' cells were quantitated by S100 staining of skin biopsies and DC precursors in peripheral blood by colony-forming unit dendritic (CFU-dendritic) assays. S100-positive cells in the epidermis doubled after treatment (2.55 S100(+) cells/high-power field before treatment to 6.05 after treatment, p = 0.029). CFU-dendritic in peripheral blood increased after treatment in 3 colorectal cancer patients but not in 3 patients with melanoma. CD11c(+) or CD123(+), HLA-DR(bright), lineage-negative dendritic cell precursors were not increased in peripheral blood mononuclear cells. This trial demonstrates that treatment with TNF-alpha and GM-CSF can increase the number of DCs in the skin and the number of dendritic cell precursors in the blood of some patients with cancer. This approach may increase the efficacy of vaccination to tumor antigens in cancer patients. FAU - Janik, J E AU - Janik JE AD - Biological Response Modifiers Program, NCI-FCRDC, 501 W. Seventh Street, Suite 3, Frederick, Maryland 21701-4507, USA. FAU - Miller, L L AU - Miller LL FAU - Kopp, W C AU - Kopp WC FAU - Taub, D D AU - Taub DD FAU - Dawson, H AU - Dawson H FAU - Stevens, D AU - Stevens D FAU - Kostboth, P AU - Kostboth P FAU - Curti, B D AU - Curti BD FAU - Conlon, K C AU - Conlon KC FAU - Dunn, B K AU - Dunn BK FAU - Donegan, S E AU - Donegan SE FAU - Ullrich, R AU - Ullrich R FAU - Alvord, W G AU - Alvord WG FAU - Gause, B L AU - Gause BL FAU - Longo, D L AU - Longo DL LA - eng PT - Clinical Trial PT - Clinical Trial, Phase I PT - Journal Article PL - United States TA - Clin Immunol JT - Clinical immunology (Orlando, Fla.) JID - 100883537 RN - 0 (Carcinoembryonic Antigen) RN - 0 (Recombinant Proteins) RN - 0 (Tumor Necrosis Factor-alpha) RN - 83869-56-1 (Granulocyte-Macrophage Colony-Stimulating Factor) SB - IM MH - Adult MH - Biopsy MH - Carcinoembryonic Antigen/blood MH - Cell Count MH - Colonic Neoplasms/blood MH - Colony-Forming Units Assay MH - Drug Therapy, Combination MH - Female MH - Flow Cytometry MH - Granulocyte-Macrophage Colony-Stimulating Factor/*therapeutic use MH - Humans MH - Langerhans Cells/*drug effects MH - Leukocyte Count MH - Leukocytes, Mononuclear/drug effects/physiology MH - Male MH - Middle Aged MH - Neoplasms/drug therapy/*pathology MH - Recombinant Proteins/therapeutic use MH - Skin/pathology MH - Thrombocytopenia/chemically induced MH - Tumor Necrosis Factor-alpha/*therapeutic use OTO - NASA OT - Non-programmatic EDAT- 1999/12/22 00:00 MHDA- 1999/12/22 00:01 CRDT- 1999/12/22 00:00 PHST- 1999/12/22 00:00 [pubmed] PHST- 1999/12/22 00:01 [medline] PHST- 1999/12/22 00:00 [entrez] AID - S1521-6616(99)94778-2 [pii] AID - 10.1006/clim.1999.4778 [doi] PST - ppublish SO - Clin Immunol. 1999 Dec;93(3):209-21. doi: 10.1006/clim.1999.4778.