Abstract：
:This study explored the ability to conduct primary drying during lyophilization at product temperatures above the glass transition temperature of the maximally freeze-concentrated solution (Tg′) in amorphous formulations for four proteins from three different classes. Drying above Tg′ resulted in significant reductions in lyophilization cycle time. At higher protein concentrations, formulations freeze dried above Tg′ but below the collapse temperature yielded pharmaceutically acceptable cakes. However, using an immunoglobulin G type 4 monoclonal antibody as an example, we found that as protein concentration decreased, minor extents of collapse were observed in formulations dried at higher temperatures. No other impacts to product quality, physical stability, or chemical stability were observed in this study among the different drying conditions for the different proteins. Drying amorphous formulations above Tg′, particularly high protein concentration formulations, is a viable means to achieve significant time and cost savings in freeze-drying processes.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Depaz RA,Pansare S,Patel SMdoi
10.1002/jps.24705subject
Has Abstractpub_date
2016-01-01 00:00:00pages
40-9issue
1eissn
0022-3549issn
1520-6017pii
S0022-3549(15)00169-0journal_volume
105pub_type
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