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Biologicals. 2018 Mar;52:37-43. doi: 10.1016/j.biologicals.2018.01.004. Epub 2018 Feb 9.

Validation and implementation of Planova™ BioEX virus filters in the manufacture of a new liquid intravenous immunoglobulin in China.

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Shandong Taibang Biological Products Co., Ltd., No. 14 East Hushan Road, Taian City, Shandong 271000, China.
Asahi Kasei Medical Co., Ltd., 1-105 Kanda Jinbocho, Chiyoda-ku, Tokyo 101-8101, Japan.
Shandong Taibang Biological Products Co., Ltd., No. 14 East Hushan Road, Taian City, Shandong 271000, China. Electronic address:


There is a continuous need to improve the viral safety of plasma products, and we here report the development and optimization of a manufacturing-scale virus removal nanofiltration step for intravenous immunoglobulin (IVIG) using the recently introduced Planova™ BioEX filter. IVIG throughput was examined for various operating parameters: transmembrane pressure, temperature, protein concentration, and prefiltration methods. The developed procedure was based on filtering undiluted process solution (50.0 g/l IVIG) under constant transmembrane pressure filtration at 294 kPa and 25 °C following prefiltration with a 0.1 μm MILLEX VV filter. The recovery of IgG was approximately 98%, and no substantial changes in biochemical characteristics were observed before and after nanofiltration in scaled-up production. A viral clearance validation study with parvovirus under worst-case conditions performed at the National Institutes for Food and Drug Control of China (NIFDC) showed PPV logarithmic reduction value (LRV) > 4. Improved viral safety of IVIG can be assured by implementing a Planova BioEX nanofiltration step to ensure effective parvovirus clearance under conditions providing excellent protein recovery and no detectable impact on product biochemical properties. This plasma-derived IVIG product is the first to be certified for parvovirus safety by the NIFDC in China.


Intravenous immunoglobulin; Nanofiltration; Parvovirus; Planova™ BioEX filter; Protein throughput

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