PMID- 7613644 OWN - NLM STAT- MEDLINE DCOM- 19950818 LR - 20191031 IS - 1067-5582 (Print) IS - 1067-5582 (Linking) VI - 17 IP - 3 DP - 1995 Apr TI - Combination therapy with ifosfamide and liposome-encapsulated muramyl tripeptide: tolerability, toxicity, and immune stimulation. PG - 181-93 AB - A phase IIb trial using liposome-encapsulated muramyl tripeptide phosphatidylethanolamine (L-MTP-PE) in combination with ifosfamide (IFX) for patients with relapsed osteosarcoma was undertaken to determine (a) the tolerability of the combination therapy, (b) if L-MTP-PE increased the toxicity of IFX, and (c) whether IFX altered or suppressed the in vivo immune response to L-MTP-PE. Patients had histologically proven osteosarcoma and pulmonary metastases that either developed during adjuvant chemotherapy or were present at diagnosis, persisted despite chemotherapy, and recurred following surgical excision. Stratum A patients were rendered clinically free of disease within 4 weeks of study entry prior to receiving combination therapy. IFX was administered at 1.8 g/m2 for 5 days every 21 days for up to eight cycles. L-MTP-PE was administered twice weekly for 12 weeks, then once weekly for 12 weeks. Once cycle of combination therapy was defined as 5 days of IFX and 3 weeks of L-MTP-PE therapy. Stratum B patients had measurable disease at study entry that was judged to be amenable to surgical resection. Stratum B patients received three cycles of combination therapy prior to surgery to judge clinical and histologic response. Postoperatively, patients received an additional five cycles. A total of nine patients were entered into the protocol: six on stratum A and three on stratum B. Serial blood samples were collected and assayed for cytokine levels (tumor necrosis factor-alpha [TNF alpha], interleukin-6 [IL-6], IL-8, neopterin, C-reactive protein). In addition, peripheral blood monocyte tumoricidal activity was evaluated pre- and post-combination therapy. Complete blood counts with differential and platelet counts were followed weekly. No increase in the toxic side effects of IFX was demonstrated when administered with L-MTP-PE nor were delays in IFX administration due to neutropenia experienced. The toxic side effects of L-MTP-PE were also not increased. Elevations of serum C-reactive protein, plasma neopterin, IL-6, IL-8, and TNF alpha following combination therapy were similar to those observed in patients treated with L-MTP-PE alone. Monocyte-mediated tumoricidal activity was elevated 24 and 72 h following L-MTP-PE and IFX therapy, similar to what has been reported following L-MTP-PE alone. Tumor specimens obtained from stratum B patients showed the histologic characteristics consistent with a "chemotherapy effect," i.e., dead, amorphous, acellular osteoid with cell drop-out.(ABSTRACT TRUNCATED AT 400 WORDS) FAU - Kleinerman, E S AU - Kleinerman ES AD - Department of Cell Biology, University of Texas M.D. Anderson Cancer Center, Houston 77030, USA. FAU - Meyers, P A AU - Meyers PA FAU - Raymond, A K AU - Raymond AK FAU - Gano, J B AU - Gano JB FAU - Jia, S F AU - Jia SF FAU - Jaffe, N AU - Jaffe N LA - eng GR - CA16672/CA/NCI NIH HHS/United States GR - CA42992/CA/NCI NIH HHS/United States PT - Clinical Trial PT - Clinical Trial, Phase II PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Immunother Emphasis Tumor Immunol JT - Journal of immunotherapy with emphasis on tumor immunology : official journal of the Society for Biological Therapy JID - 9418950 RN - 0 (Adjuvants, Immunologic) RN - 0 (Liposomes) RN - 0 (Phosphatidylethanolamines) RN - 1LM890Q4FY (mifamurtide) RN - 53678-77-6 (Acetylmuramyl-Alanyl-Isoglutamine) RN - UM20QQM95Y (Ifosfamide) SB - IM MH - Acetylmuramyl-Alanyl-Isoglutamine/administration & dosage/adverse effects/*analogs & derivatives MH - Adjuvants, Immunologic/*administration & dosage MH - Adolescent MH - Adult MH - Aged MH - Antineoplastic Combined Chemotherapy Protocols/*adverse effects MH - Child MH - Humans MH - Ifosfamide/*administration & dosage/adverse effects MH - Liposomes/administration & dosage MH - Lung Neoplasms/*drug therapy/immunology/pathology/secondary MH - Middle Aged MH - Osteosarcoma/*drug therapy/immunology/pathology MH - Phosphatidylethanolamines/*administration & dosage/adverse effects EDAT- 1995/04/01 00:00 MHDA- 1995/04/01 00:01 CRDT- 1995/04/01 00:00 PHST- 1995/04/01 00:00 [pubmed] PHST- 1995/04/01 00:01 [medline] PHST- 1995/04/01 00:00 [entrez] AID - 10.1097/00002371-199504000-00007 [doi] PST - ppublish SO - J Immunother Emphasis Tumor Immunol. 1995 Apr;17(3):181-93. doi: 10.1097/00002371-199504000-00007.