Abstract
Dickkopf-1 (DKK1), expressed by myeloma cells, suppresses osteoblast function and plays a key role in bone disease in multiple myeloma. BHQ880, a human neutralizing IgG1 anti-DKK1 monoclonal antibody, is being investigated for its impact on multiple myeloma-related bone disease and as an agent with potential anti-myeloma activity. The primary objectives of this Phase IB study were to determine the maximum tolerated dose (MTD) of BHQ880 and to characterize the dose-limiting toxicity (DLT) of escalating doses in combination with anti-myeloma therapy and zoledronic acid. Twenty-eight patients were enrolled and received BHQ880 at doses of 3-40 mg/kg. No DLTs were reported, therefore, the MTD was not determined. The recommended Phase II dose was declared as 10 mg/kg, based mainly on saturation data. There was a general trend towards increased bone mineral density (BMD) observed over time; specific increases in spine BMD from Cycle 12 onwards irrespective of new skeletal-related events on study were observed, and increases in bone strength at the spine and hip were also demonstrated in some patients. BHQ880 in combination with zoledronic acid and anti-myeloma therapy was well tolerated and demonstrated potential clinical activity in patients with relapsed or refractory multiple myeloma.
Original language | English (US) |
---|---|
Pages (from-to) | 366-375 |
Number of pages | 10 |
Journal | British journal of haematology |
Volume | 167 |
Issue number | 3 |
DOIs | |
State | Published - Nov 1 2014 |
Keywords
- BHQ880
- Multiple myeloma
- Phase I
- Skeletal-related event
ASJC Scopus subject areas
- Hematology