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www.fdanews.com/articles/126278-gsk-trypsin-may-be-rotarix-contaminant-fda-to-convene-advisory-panel

GSK: Trypsin May Be Rotarix Contaminant, FDA to Convene Advisory Panel

April 16, 2010
GlaxoSmithKline (GSK) is honing in on a possible source of the DNA fragments found in vials of its Rotarix vaccine, less than a month before an FDA panel meets to review the problem and consider possible solutions. Preliminary investigations suggest trypsin, a digestive enzyme used to establish the master cell bank for the vaccine, may be a source of the contamination with porcine circovirus 1 DNA. However, further testing is needed to confirm the preliminary findings, GSK spokeswoman Sarah Alspach said.
Drug Industry Daily