PMID- 25740691 OWN - NLM STAT- MEDLINE DCOM- 20150807 LR - 20181202 IS - 1432-0843 (Electronic) IS - 0344-5704 (Linking) VI - 75 IP - 5 DP - 2015 May TI - First-in-human, phase I/IIa dose-escalation and safety study of balugrastim in breast cancer patients receiving myelosuppressive chemotherapy. PG - 929-39 LID - 10.1007/s00280-015-2703-1 [doi] AB - PURPOSE: To evaluate safety of balugrastim, a recombinant human serum albumin and granulocyte colony-stimulating factor (G-CSF), administered over a range of therapeutic doses in women with breast cancer receiving doxorubicin plus docetaxel chemotherapy. METHODS: The phase I, sequential dose-escalation first segment compared subcutaneous balugrastim 50, 150, 300, and 450 microg/kg during chemotherapy cycles 0-2. The randomized (2:2:1), open-label, phase IIa second segment compared balugrastim 300 or 450 microg/kg with pegfilgrastim 6 mg during chemotherapy cycles 1 and 2. RESULTS: In the phase I segment, balugrastim was escalated to 450 microg/kg in 13 patients without dose-limiting toxicity. Three (9.7 %) of the 31 adverse events (AEs) reported in nine patients were grade 3 (agranulocytosis, vomiting, hypertension); none was grade 4. In the open-label phase IIa segment (N = 51), the majority of the 64 AEs reported in 31 (75.6 %) balugrastim-treated patients were grade 1 (59.4 %), with 39.1 % grade 2, 1.6 % grade 3 (one AE of vomiting), and none grade 4. Of the 16 AEs reported in seven (70.0 %) pegfilgrastim-treated patients, 87.5 % were grade 1, 6.3 % were grade 2, 6.3 % were grade 3 (one AE of thrombocytopenia), and none were grade 4. Overall, there were six bone pain AEs reported, one in the balugrastim 300 microg/kg group and five in the balugrastim 450 microg/kg group. No AEs in either study necessitated treatment interruption/discontinuation. The incidence and duration of grade 3-4 neutropenia were similar between balugrastim- and pegfilgrastim-treated patients. CONCLUSIONS: Balugrastim was well tolerated in this small population of breast cancer patients. FAU - Avisar, Noa AU - Avisar N AD - Teva Pharmaceuticals, Netanya, Israel. FAU - Adar, Liat AU - Adar L FAU - Bock, Jason AU - Bock J FAU - Muller, Udo AU - Muller U FAU - Shen, David AU - Shen D FAU - Barash, Steve AU - Barash S FAU - Pukac, Laurie AU - Pukac L LA - eng PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20150305 PL - Germany TA - Cancer Chemother Pharmacol JT - Cancer chemotherapy and pharmacology JID - 7806519 RN - 0 (Recombinant Fusion Proteins) RN - 0 (Recombinant Proteins) RN - 0 (Serum Albumin) RN - 0 (Taxoids) RN - 143011-72-7 (Granulocyte Colony-Stimulating Factor) RN - 15H5577CQD (Docetaxel) RN - 3A58010674 (pegfilgrastim) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 80168379AG (Doxorubicin) RN - PVI5M0M1GW (Filgrastim) RN - T6K4P3HIU8 (balugrastim) RN - ZIF514RVZR (Serum Albumin, Human) SB - IM MH - Adult MH - Aged MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects/pharmacokinetics/*therapeutic use MH - Breast Neoplasms/*drug therapy/metabolism MH - Docetaxel MH - Dose-Response Relationship, Drug MH - Doxorubicin/administration & dosage/adverse effects/pharmacokinetics MH - Female MH - Filgrastim MH - Granulocyte Colony-Stimulating Factor/adverse effects/pharmacokinetics/*therapeutic use MH - Humans MH - Middle Aged MH - Polyethylene Glycols MH - Recombinant Fusion Proteins/adverse effects/pharmacokinetics/*therapeutic use MH - Recombinant Proteins/adverse effects/pharmacokinetics/therapeutic use MH - Serum Albumin/adverse effects/pharmacokinetics/*therapeutic use MH - Serum Albumin, Human MH - Taxoids/administration & dosage/adverse effects/pharmacokinetics EDAT- 2015/03/06 06:00 MHDA- 2015/08/08 06:00 CRDT- 2015/03/06 06:00 PHST- 2014/08/28 00:00 [received] PHST- 2015/02/11 00:00 [accepted] PHST- 2015/03/06 06:00 [entrez] PHST- 2015/03/06 06:00 [pubmed] PHST- 2015/08/08 06:00 [medline] AID - 10.1007/s00280-015-2703-1 [doi] PST - ppublish SO - Cancer Chemother Pharmacol. 2015 May;75(5):929-39. doi: 10.1007/s00280-015-2703-1. Epub 2015 Mar 5.