PT  - JOURNAL ARTICLE
AU  - Bluemel, Johannes
AU  - Ma, Junfen
TI  - Proceedings of 2017 Viral Clearance Symposium Session 3: Resin Life Time
AID  - 10.5731/pdajpst.2018.009134
DP  - 2018 Jan 01
TA  - PDA Journal of Pharmaceutical Science and Technology
PG  - pdajpst.2018.009134
4099  - http://journal.pda.org/content/early/2018/07/03/pdajpst.2018.009134.short
4100  - http://journal.pda.org/content/early/2018/07/03/pdajpst.2018.009134.full
AB  - In many down-stream processes, chromatographic purification steps contribute significantly to the overall virus reduction capacity. International Conference on Harmonisation (ICH) guideline ICH Q5A [1] outlines that "Over time and after repeated use, the ability of chromatography columns and other devices used in the purification scheme to clear virus may vary. Some estimate of the stability of the viral clearance after several uses may provide support for repeated use of such columns." Virus reduction studies with used resin normally require a high amount of in-process material and time. The experience with used resin has been accumulated continuously, stimulating the discussion on whether it would be necessary to investigate virus reduction on used resins for each product. In this session, additional experience from studies with used resins was provided.