Using CDs to formulate proteins, dominantly to prevent aggregation is more or less known; there are CDs marketed for such uses (Roquette – Kleptose Biopharma) still, no product is on the market.
This patent from Genentech (Brian Connolly; Lydia Hamburg; Emily Holz) proposes another feature: when using CDs with monoclonal antibodies, degradation of polysorbates is also reduced.