This phase I study is assessing how safe and effective a new targeted therapy (ABBV-383) is when given in addition to other anti-cancer treatments in adults with relapsed or refractory multiple myeloma.A Dose Escalation and Expansion Study of ABBV-383 in Combination With Anti-Cancer Regimens for the Treatment of Patients With Relapsed/Refractory Multiple Myeloma

Exclusion

• Received a peripheral autologous stem cell transplant (SCT) within 12 weeks, or an allogeneic SCT within 1 year of the first dose of study drug treatment.
• Unresolved adverse event (AE)s >= Grade 2 (National Cancer Institute [NCI] Common Terminology Criteria for Adverse Events [CTCAE] version 5.0) from prior anticancer therapy.
• Known central nervous system involvement Multiple Myeloma (MM).

• Has any of the following conditions:

  • Nonsecretory MM.
  • Active Plasma cell leukemia i.e., either 20% of peripheral white blood cells or > 2.0 × 10^9L circulating plasma cells by standard differential.
  • Waldenstrom's macroglobulinemia.
  • Light chain amyloidosis.
  • Polyneuropathy, organomegaly, endocrinopathy, monoclonal protein and skin changes (POEMS) syndrome.
  • Major surgery within 4 weeks prior to first dose or planned study participation.
  • Acute infections within 14 days prior to first dose of study drug requiring therapy (antibiotic, antifungal or antiviral).
  • Uncontrolled diabetes or hypertension within 14 days prior to first dose.
  • Peripheral neuropathy >= Grade 3 or >= Grade 2 with pain within 2 weeks prior to first dose.
• Known active infection of evidence of active hepatitis B, evidence of active hepatitis C, human immunodeficiency virus.