Assessing hepatitis B virus serologies when transitioning patients from intravenous immune globulin therapy to rituximab for the treatment of autoimmune neuromuscular diseases.

INTRODUCTION/AIMS: Intravenous immune globulin (IVIG) has been used as early treatment for autoimmune neuromuscular diseases, but due to cost and frequency, may be switched to rituximab. Rituximab and other B-cell-depleting medications require screening of hepatitis B virus (HBV) serologies given the risk of HBV reactivation (HBVr). We aimed to describe the incidence and characteristics of passively transferred antiviral serologies from IVIG and how to differentiate between passive antibody transfer and resolved HBV infection. METHODS: This was a single-center descriptive study of neurology patients prescribed rituximab and IVIG. Retrospective medical record reviews were performed and patient-specific variables were collected. RESULTS: Twelve patients had reactive anti-HBc results after starting IVIG, but only 9 were confirmed to have reactive anti-HBc from passive transfer. Whether reactive anti-HBc in the remaining three patients was from passive IVIG transfer could not be confirmed. Five patients with reactive anti-HBc results during rituximab screening did not have pre-IVIG anti-HBc results for comparison and were started on antiviral prophylaxis. Reactive anti-HBc serologies changed to nonreactive after IVIG discontinuation 44-321 days after the last IVIG infusion. DISCUSSION: This study confirms IVIG can passively transfer anti-HBc serologies in a neurologic cohort. Ideally, HBV serologies would be checked before starting IVIG to help later determine if passive transfer occurred. With the increasing use of B-cell-depleting medications for neuromuscular conditions, it is important for providers to be knowledgeable on the interpretation of HBV serologies for patients on IVIG and to ensure implementation of an HBVr prophylaxis management strategy for patients when appropriate.

Implementation of a Targeted Inhaled Corticosteroid De-Escalation Process in Patients with Chronic Obstructive Pulmonary Disease in the Primary Care Setting.

Purpose: To evaluate the feasibility and success of a pharmacist-led, targeted inhaled corticosteroid (ICS) de-escalation process in patients with chronic obstructive pulmonary disease (COPD) where the risks of ICS therapy outweigh the potential benefits. Methods: A population health data management tool was leveraged to identify patients who may qualify for ICS de-escalation. Primary care pharmacists clinically reviewed and subsequently contacted patients who were determined to be appropriate candidates. After discussion on the risks and benefits of ICS therapy, a stepwise algorithm was utilized to assist with ICS de-escalation and optimization of bronchodilator therapy. Outcomes analyzed include the proportion of patients for whom ICS was de-escalated, patient acceptability of the intervention, time taken to complete the intervention, barriers to implementation, and the number of additional interventions made by pharmacists. Results: Of the 126 patients originally identified as potential candidates, 58 (46.0%) were deemed appropriate to proceed with ICS de-escalation and successfully contacted by a pharmacist. Of these patients, 49 (84.5%) were agreeable and ultimately 42 were successfully de-escalated with 37 patients maintained off ICS. The average time required for an encounter was 15.8 minutes. Conclusion: There is utility in a pharmacist-driven, targeted ICS de-escalation process to facilitate meeting guideline-directed medication therapy goals in patients with COPD, granted the availability of efficient tools to assist in identifying patients that qualify. Such a targeted approach increases pharmacist involvement in medication management of COPD and can expand the primary care pharmacy practice.