Caring Wisely FY 2025 Project Contest

Establishing a Pharmacist-led Cytomegalovirus Stewardship Program to Reduce Hospital Admissions, Length of Stay, and CMV Resistance

Proposal Status: 

PROJECT LEAD(S)Jessica Reeves, PharmD and Aida Venado, MD  

EXECUTIVE SPONSOR(S): Steven Hays, MD; Lori ColemanRN; Ashley Thompson, PharmD; David Quan, PharmD  

ABSTRACT  Cytomegalovirus (CMV) infection is a prevalent and serious opportunistic infection in immunocompromised solid organ transplant (SOT) recipients, with significant impacton graft survival, morbidity, and mortality. Valganciclovir, the first-line agent for prevention and treatment of CMV, requires precise dosing to avoid breakthrough infection and development of resistance due to underdosing and myelosuppression from overdosing. With the growth of our transplant program, admissions for CMV have increased from 13 in 2020 to 30 in 2024. Correspondingly, the average length of stay has risen from 69 days to 438 days, resulting in a significant increase in cost from $358,549 in 2020 to $2,470,406 in 2024.To address these challenges, we propose the implementation of a pharmacist-led CMV stewardship program utilizing existing tools within the Apex system to optimize medication dosing and monitoring. Literature supports that pharmacist-led stewardship programs can reduce the incidence of CMV viremia, prevent breakthrough infections, accelerate time to viral eradication, lower resistance rates, and decrease CMV-related hospital admissions by shifting from reactive to proactive care.1-3 Utilizing published strategies, the proposed pharmacist-led CMV stewardship program aims to reduce inpatient days due to CMV infection by 25%, achieve cost savings exceeding $500,000 annually, and minimize CMV resistance, thereby improving patient outcomes, morbidity, and mortality in SOT recipients. 

TEAM  We plan to initially implement the stewardship program within the lung transplant group, with the intention of expanding it to other SOT teams, all eager to improve CMV outcomes.Given that all SOT groups have similar outpatient lab review workflows and a dedicated pharmacist in clinic, this model will be easily applicable across other transplant populations. The initiative has the full support of both pharmacy and lung transplant leadership. 

  • Transplant pulmonologist: Aida Venado, MD, MAS 

  • Lung Transplant Pharmacists: Jessica Reeves, PharmD, Rebecca Florez, PharmD, Rachael Gordon, PharmD, Bo Yen, PharmD  

  • Heart Transplant Pharmacist: Jose Lazo, PharmD, Victoria Nguyen, PharmD, Brandon Martinez, PharmD  

  • Abdominal Transplant Pharmacists: Althea Han, PharmD, Melanie Mascetti, PharmD, KevenGomez, PharmD, David Quan, PharmD, Jennifer La, PharmD 

PROBLEMCMV infections are common in the general population, typically causing mild illness in healthy individuals. However, CMV is a major complication in SOT recipients and is associated with significant healthcare costs, morbidity,and mortality. Once exposed, CMV remains latentand can reactivate during immunocompromised states. Risk stratification in SOT recipients is based on CMV serostatus: CMV IgG positive indicates prior exposure, and CMV IgG negative indicates no exposure. SOT recipients who are CMV mismatch (donor IgG positive, recipient IgG negative) are at the highest risk for infection. Additionally, the profound immunosuppressionrequired to prevent allograft rejection increases the risk for CMV reactivation which can lead tointense viral replication and life-threatening infection. 

Valganciclovir is an oral antiviral that is the first-line standard of care for both the prevention and treatment of CMV infection. Dosing requires careful adjustment based on renal function, as underdosing increases the risk of breakthrough infection and the development of refractory or resistant disease, while overdosing can lead to myelosuppression, potentially exacerbating complications in immunocompromised patients. When refractory or resistant CMV infection is suspected, a genotyping test is performed to detect mutations and confirm antiviral resistance. This test is typically not available at labs outside of UCSF and can only be performed when CMV viral loads exceed 1,000 copies. 

While close attention must be paid to renal dose adjustments, clinical expertise and individualized, comprehensive patient evaluation should be considered before implementing a dosing change considering factors such as recent VL, serostatus, presence of neutropenia or thrombocytopenia, and level of immunosuppression. 

Within the lung transplant program, lab results are reviewed collaboratively by nurse coordinators with an advanced practice provider (APP), fellow, or attending pulmonologistSimilar workflows are followed in the outpatient management of other SOT patients. During lab review, renal function and CMV VL are briefly assessed, and dosing changes to valganciclovir are made accordingly. Due to the high volume of patients, there is often insufficient time to conduct a comprehensive assessment of each case leading to instances of inappropriate dose reductions, contributing to breakthrough viremia or development of CMV resistance, which requires hospitalization for IV therapies.Furthermore, a lack of standardization in the formulas used to assess renal function among providers has led to dosing discrepancies, confusion about when to initiate treatment versus continue prophylactic dosing for low-level CMV viremia, and inconsistent use of CMV genotyping.This has resulted in increased burden to patients, such as the need to travel to long distances to UCSF for CMV genotyping, as well as increased costs to both UCSF and patients. 

Rural and underserved communities can face disparities in care. Patients in communities that do not have LabCorp or Quest and rely on alternative facilities for lab work can experience significant delays in time to reporting of their labs, leading to delays in adjustment of dosing, initiation of treatment, or assessment for resistant disease. If resistant disease is suspected, these patients must travel to UCSF for CMV genotyping, as it is generally unavailable at outside laboratories.  

Over the past five years, UCSF has seen a notable increase in inpatient admissions for the management of CMV infections, rising from 13 in 2020 to 30 in 2024, accompanied by a substantial rise in total inpatient days from 69 to 438, suggesting a trend toward more severe or refractory cases.The financial impact of these admissions has also escalated exponentially, with costs increasing from $358,549 in 2020 to $2,470,406 in 2024. Furthermore, multiple incident reports (IRs) have been filed concerning missed or delayed CMV lab results, as well as the development of severe, resistant CMV disease linked to the underdosing of valganciclovir. With regard to lab tests, the number of CMV genotyping tests performed has increased, from 22 tests in 2020 to 33 in 2024. Specifically, within the lung transplant group, 26 genotyping tests have been sent from 2020 to 2024. Confirmed CMV resistance has increased from 50% (1 out of 2 tests) in 2020 to 75% (6 out of 8 tests) in 2024. Additionally, eight of the 26 genotyping tests were sent inappropriately with insufficient VL for the test to be run. 

This concerning trend of escalating inpatient days, costs, and increased morbidity and mortality is expected to persist as our annual transplant volume continues to grow. As of December 2024, UCSF ranks as the second all-time highest volume transplant center in the United States, having performed a total of 18,449 organ transplants, according to the Organ Procurement and Transplantation Network (OPTN). 

TARGETPublished literature supports that pharmacist-led CMV stewardship initiatives can reduce CMV infection rates, CMV-related hospital admissions, and CMV resistance rates by over 40%.1-3 Furthermore, when patients develop (val)ganciclovir resistance, literature suggests that there is a ten-fold increase in associated total hospital costs ($200,000 vs $20,000).Based on published literature and success of these pharmacist-led initiatives, our goal is to implement a pharmacist-run CMV stewardship program aimed at reducing CMV-related hospital admissions, inpatient days, associated costs, and the development of CMV resistance by 25%. This would result in a reduction of annual CMV-related hospital admissions from 30 to 22 and a decrease in inpatient days from 438 to 328. With an estimated direct variable cost of $1,688 per bed for the 2023-2024 academic year, we anticipatecost savings of at least $183,992 (excluding ICU bed costs) from a 25% reduction in patient days. 

In 2024, the total cost associated with CMV infection admissions was $2,470,406. We project a 25% reduction in costs, resulting in total savings of $617,601. Lastly, we anticipate a 25% reduction in the development of CMV resistance. In 2024, 33 CMV genotyping tests were ordered at a cost of $1,945 per test. With a 25% reduction in resistance and the subsequent need for fewer genotyping tests, we expect to save $16,000.  

We utilized Slicer Dicer within Apex to determine the number of admissions, total length of stay, and total associated costs for CMV infection as the principal problem for admission. 

GAPS Currently, there is significant variability in CMV management within the lung transplant program at UCSF, as well as across other organ transplant groups. In the existing workflow, CMV viral load results are reviewed alongside renal function during daily lab review (Monday through Friday) with nurse coordinators and an APP, fellow, or attending. Due to the high volume of labs reviewed, there is often insufficient time to individualize and comprehensively assess each CMV result and corresponding change in renal function. Additional challenges include the absence of updated, standardized protocols regarding when to initiate treatment dosing of valganciclovir versus when to continue monitoring, resulting in confusion and inconsistent practices 

Within Apex, there has been the use of different creatinine clearance calculators that may utilize an inappropriate patient weight leading to under or over estimating creatinine clearance, further complicating dosing decisions. Additionally, if a patient has not had a weight or serum creatine in the past twenty-one days, Apex will not calculate a creatinine clearance, leading providers to potentially calculate it incorrectly. Moreover, there has been an overuse of CMV genotyping in patients without clinical suspicion of resistant or refractory disease, or without sufficient viral load for the test to be run, leading to unnecessary costs and increased patient burden due to the need to travel long distances to UCSF for testing. 

Many patients routinely have laboratory tests conducted at non-UCSF facilities, requiring manual entry of results into the Apex system.This process introduces equity gaps, resulting in delays in receiving test results, adjusting valganciclovir dosing, and initiating timely treatment for breakthrough CMV infections.These delays contribute to the emergence of resistant CMV strains, which may ultimately necessitate inpatient treatment with intravenous foscarnet or maribavir. Patients who are most adversely affected are those residing in remote communities with limited access to local laboratory services.  

INTERVENTION  We propose the implementation of a pharmacist-led CMV stewardship initiative, modeled after successful programs at other institutions, which have demonstrated reductions in the incidence of CMV viremia and breakthrough infection, faster time to CMV eradication, lower rates of CMV resistance, and a decrease in CMV-related hospital admissions.1-3  Furthermore, these stewardship models have facilitated a shift in patient-centered care from reactive to proactive, leading to improved patient outcomes and a reduction in the duration of valganciclovir therapy needed to achieve viral clearance, which can help reduce risk of myelosuppression in an already vulnerable population.1 

This pharmacist led initiative will be implemented in the outpatient setting and integrated into the workflow of the covering outpatient pharmacist for each respective organ group.First, an updated UCSF CMV protocol will be developed in collaboration with Infectious Disease Specialists, Lung Transplant Specialists, and Transplant Pharmacists to align with current practices and streamline CMV management. To ensure the sustainability and long-term success of the initiative, we will initially focus on the highest-risk populations, including CMV mismatch patients (donor CMV IgG positive, recipient CMV IgG negative), individuals with an active CMV viral load, and those receiving alternative therapies for CMV (such asletermovir,maribavir, foscarnet, or cidofovir). 

Working with Phoenix and informatics teams, an Episode of Care Encounter will be created to facilitate the enrollment and monitoring of these high-risk patients. A daily report (Monday through Friday) will be generated within Apex, enabling the covering clinic pharmacist to review enrolled patients. The pharmacist will clinically assess the patients' new lab results and may take one of the following actions, as clinically appropriate: adjust the dose of valganciclovir, modify the frequency of CMV viral load monitoring, or order CMV resistance genotypingAdditionally, the pharmacist will communicate with the covering attending physician and make recommendations regarding changes to immunosuppression, admission for intravenous therapies in cases of suspected refractory or resistant CMV, or switching to alternative therapies due to adverse effects. 

Through the Episode of Care, the pharmacist will be able to document a concise, standardized note utilizing DOT phrases, which will be routed to the nurse coordinator and sent to the patient via MyChart. The nurse coordinator will then follow up with the patient to ensure the necessary changes are implemented. Communication of medication changes with patients by the nurse coordinator is already a standard of practice within our workflows. The pharmacist will also assign a follow-up date to the encounter, and the daily report will allow sorting based on the next follow-up date, enabling timely review of labs and ensuring that the pharmacist can reach out if labs are not completed as expected. 

All high-risk CMV patients will be enrolled in the CMV initiative during their index hospitalization for transplantation by the covering inpatient transplant pharmacist. In the outpatient setting, when an CMV VL is detected, an alert will be triggered in Apex and sent to the respective pharmacist’s pooled in-basket. The pharmacist will then enroll the patient for ongoing managementAdditionally, patients currently receiving alternative therapies will be enrolled for monitoring of CMV VL to detect any breakthrough viremia, or at the time of transitioning to alternative therapies. 

Potential barriers to implementation include ongoing challenges in obtaining lab results promptly for patients in remote areas whose EHRs do not integrate with ours, as well as difficulties in obtaining CMV resistance genotyping at outside hospitals or labs. Additional challenges include medication non-compliance leading to breakthrough CMV infection and insurance authorization for alternative therapies such as maribavir or letermovir. While we anticipate staffing coverage of this initiative to assimilate into our current workflow, there is a potential barrier for staffing gaps if a pharmacist(s) is on vacation and may require the inpatient pharmacist to review the daily report.

PROPOSED EHR MODIFICATIONSWe need to develop a new workflow for CMV monitoring for transplant recipients at UCSF within Apex utilizing Episodes of Care Encounters. This platform will facilitatetimely, reliable, and closed-loop communication among multiple stakeholders—patients, transplant pharmacists, and nurse transplant coordinators—from laboratory result review to patient instructions. Please see the attached document outlining specific EHR modifications. 

RETURN ON INVESTMENT (ROI)  Based on our goal of a 25% reduction in CMV-related hospital admissions, inpatient days, associated costs, and the development of CMV resistance, the following cost savings and revenue enhancement would be achieved:  

  • Reduction of annual CMV-related hospital admissions from 30 to 22 

  • Decrease in inpatient days from 438 to 328 

  • Cost savings of $16,00 for reduced CMV genotyping tests, based on CMV genotyping test of $1,945 

  • Cost savings of at least $183,992 in bed costs (excluding ICU bed costs) based on estimated variable cost of $1,688 per bed for the 2023-2024 academic year 

  • Total hospital-admission cost savings of $617,601 based on total annual cost of $2,470,406 in 2024  

SUSTAINABILITYWithin the transplant programs, pharmacists and nurse coordinators are already established members of the teamWith lung transplant pharmacists in clinic five days per week, we believe that this model will be sustainable, requiring approximately to 1.5 hours of review time per day, Monday through Friday, based on the time commitment described by other institutions and estimated volume of labs to be reviewed. We believe that funding for this initiative would allow this project to be created, which would then be assimilated into pre-existing workflows allowing for sustainability and longevity beyond the funding year while improving patient care and resulting in cost savings.  

BUDGET  

  • Salary support for project lead: $50,000 

Supporting Documents: