Safety/Efficacy Study of LDE225 (Sonidegib) Plus Bortezomib in Patients With Relapsed or Relapsed/Refractory Multiple Myeloma

"Lead-In: LDE225 will be administered orally at three dose levels starting at 400mg. If acceptable tolerability is demonstrated, escalations may continue up to 800 mg. LDE225 will be administered orally as a single daily dose for 21 days in combination with a fixed dose of bortezomib to be given on Days 1, 4, 8, 11 of each 21 day cycle.~Dose Expansion: LDE225 will be given as a single oral daily dose for 21 days at the MTD determined in the lead-in phase.~Maintenance Therapy: Patients who complete 16 cycles of therapy with stable disease or better will be eligible for single agent maintenance therapy of LDE225 at the MTD orally for up to 2 years or until progressive disease or unacceptable toxicity."

In both the lead-in and dose expansion portions of the study, bortezomib, 1.3 mg/m2, will be administered by subcutaneous injection (SQ) on Days 1, 4, 8, 11 of each 21 day cycle.