Incidence and risk factors for bacterial infection using bortezomib, lenalidomide, and dexamethasone (RVd) in newly

Anisa Bici1, Matthew J Pianko2, Victoria R Nachar3

  • 1Department of Pharmacy Services, Michigan Medicine and the University of Michigan College of Pharmacy, Ann Arbor, MI, USA.

Leukemia & Lymphoma
|October 29, 2022
PubMed

Insights

Bacterial infections occurred in 14.5% of newly diagnosed multiple myeloma patients receiving bortezomib, lenalidomide, and dexamethasone (RVd) induction therapy. Age, smoking, diabetes, prior antibiotic use, and high-risk cytogenetics increased infection risk.

Area of Science:

  • Hematology
  • Oncology
  • Infectious Diseases

Background:

  • Infections are a significant cause of morbidity and mortality in newly diagnosed multiple myeloma (NDMM).
  • The real-world risk of infection with modern induction regimens like bortezomib, lenalidomide, and dexamethasone (RVd) is not well-characterized.
  • Understanding infection risks is crucial for optimizing treatment strategies in NDMM.

Purpose of the Study:

  • To identify the incidence of bacterial infections during first-line RVd induction therapy for NDMM.
  • To determine risk factors associated with bacterial infections in this patient population.
  • To evaluate the severity and outcomes of infections in patients treated with RVd.

Main Methods:

  • Retrospective single-center cohort study.
  • Inclusion of 144 patients with NDMM treated with first-line RVd from January 2014 to January 2020.
  • Collection of demographic and clinical data to identify infections and risk factors.

Main Results:

  • 21 patients (14.5%) experienced bacterial infections during RVd induction.
  • 8 patients (5.5%) had grade 3 infections, despite low antibiotic prophylaxis use (12%).
  • Multivariable analysis identified age, smoking history, diabetes, recent antibiotic use, and high-risk cytogenetics as significant risk factors for infection.

Conclusions:

  • Bacterial infections are a notable concern in NDMM patients undergoing RVd induction.
  • Specific patient characteristics and prior treatments are associated with an increased risk of infection.
  • Further research into prophylactic strategies and risk stratification may improve outcomes.

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