What was different here is the relative levels of antibodies or titers. Levels of these antibodies in both the insulin and Herceptin studies were within the same levels posttreatment as seen in the pretreatment populations, or in other words, no signals of treatment boosting.In the HyQ registration study, we observed antibody levels that were orders of magnitude higher than have previously been observed in any other repeat dose clinical trial, which is suggestive of some form of immune response with this combination. So it is possible that there is some form of interaction between these plasma derivatives that's leading to these high antibody levels, but further investigation is required.
Halozyme Therapeutics Management Discusses Q2 2012 Results - Earnings Call Transcript
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