Publications by authors named "Raymund Razonable"

Introduction: Lung transplant recipients (LTRs) are susceptible to invasive candidiasis (IC). This study aimed to assess the incidence, risk factors, and impact of IC on mortality in LTRs using a national insurance claims cohort.

Methods: We conducted a retrospective cohort study using administrative claims data from the OptumLabs® Data Warehouse.

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Treating acute rejection of a pancreas transplant in a severely immunocompromised patient with viral opportunistic infection is challenging due to the balance of rescuing from rejection without worsening the morbidity of infection and prolonging the infection episode. We present a case involving a pancreas-after-kidney transplant in a patient with cytomegalovirus (CMV) high-risk discordance (donor positive/recipient negative) and chronic lymphopenia who developed difficult-to-treat CMV disease approximately 6 months after pancreas transplantation. Following the withdrawal of the antimetabolite due to the persistent CMV DNAemia and lymphopenia, the patient experienced acute pancreas rejection without adequate and sustained response to treatment with steroids and thymoglobulin.

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Background: Multiple outpatient therapies have been developed for COVID-19 in high-risk individuals, but solid organ transplant (SOT) recipients were not well represented in controlled clinical trials. To date, few comparative studies have evaluated outcomes between outpatient therapies in this population.

Methods: We performed a retrospective cohort study using de-identified administrative claims data from OptumLabs Data Warehouse.

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Background: Diagnostic uncertainty caused by the low positive predictive value of HEV-specific IgM antibody (Ab) testing in a low-prevalence setting. We investigated the utility of a two-step HEV IgM Ab testing approach for diagnosing HEV infection.

Methods: We retrospectively reviewed all adults who underwent HEV IgM Ab and/or HEV RNA testing from July 2013 through June 2023 at Mayo Clinic.

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The field of infectious diseases (ID) offers a rewarding career path and is widely viewed as an essential subspecialty in medicine. However, in recent years, these positive aspects have been overshadowed by concerns surrounding low fellowship match rates, undercompensation, and burnout. The Infectious Diseases Society of America Fellowship Training Program Directors Committee met in 2023, discussed the future of ID as a specialty, and sought to develop strategies to highlight the value and opportunities of ID for future generations, as well as underscore the importance of and provide tools for positive messaging to trainees about the subspecialty.

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Introduction: The pathogenesis and outcome of cytomegalovirus (CMV) infection after solid organ transplantation (SOT) reflects the interplay between viral replication and CMV-specific immunity. Despite advances in its diagnosis and treatment, CMV continues to cause significant morbidity after SOT. Since CMV is an opportunistic pathogen that occurs as a result of impaired pathogen-specific immunity, laboratory assays that measure CMV-specific immune responses may be useful in assisting clinicians in its management.

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Background: Preventive strategies for cytomegalovirus (CMV) in the posttransplant period have changed the pattern of CMV infections, now more commonly manifesting as late-onset occurrences known as post-prophylaxis delayed-onset CMV disease (PPDOC). We conducted a survey to investigate provider practices in managing PPDOC.

Methods: A web-based provider survey on the management of PPDOC was developed using Research Electronic Data Capture (REDCap).

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Background: Development of brain abscess following solid organ transplantation is associated with significant morbidity and mortality. We undertook a descriptive study to evaluate the etiology, clinical manifestations, diagnosis, management, and outcomes of brain abscess in solid organ transplant (SOT) recipients at three major transplant centers in the United States.

Methods: This is a retrospective study of adults with brain abscess following SOT between January 2000 and June 2021 at Mayo Clinic sites in Arizona, Minnesota, and Florida.

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Article Synopsis
  • Cytomegalovirus (CMV) significantly impacts solid organ transplant recipients (SOTRs), with secondary prophylaxis (SP) potentially beneficial in high-risk cases despite not being widely recommended.
  • A review of studies up to September 2023 found that while SP with valganciclovir did not notably reduce CMV relapse, it was linked to decreased mortality rates among recipients.
  • The overall evidence from six nonrandomized studies is insufficient to make definitive recommendations on SP, highlighting the importance of personalized risk assessments by clinicians.
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Introduction: Cytomegalovirus (CMV) reactivation is one of the most common complications after allogeneic hematopoietic stem cell transplantation (HSCT). Letermovir is approved for CMV prophylaxis among high-risk recipients. However, delayed-onset post-prophylaxis clinically significant CMV infection (csCMVi) has been observed, suggesting the potential for extending letermovir prophylaxis beyond the first one hundred days post-HSCT.

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Cytomegalovirus (CMV) infection is arguably the most important infectious complication that negatively affects the outcome of solid organ transplantation. For decades, CMV management after transplantation has relied on antiviral drugs that inhibit viral DNA polymerase (ganciclovir, foscarnet, and cidofovir). However, their use has been complicated by myelosuppression, nephrotoxicity, and selection of drug-resistant viruses.

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Topic Importance: The prevalence of invasive fungal infections (IFIs) has risen in the past 3 decades, attributed to advancements in immune-modulatory therapies used in transplantation, rheumatology, and oncology.

Review Findings: Organisms that cause IFI evade the host's natural defenses or at opportunities of immunologic weakness. Infections occur from inhalation of potentially pathogenic organisms, translocation of commensal organisms, or reactivation of latent infection.

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Article Synopsis
  • - Cytomegalovirus (CMV) is a major opportunistic infection in transplant patients, and some strains have developed resistance to standard antiviral treatments, leading to complications.
  • - The article summarizes the definitions, drug resistance mechanisms, diagnostic processes, and management strategies for treating resistant and refractory CMV infections in transplant recipients.
  • - Expert insights suggest that these infections significantly worsen patient outcomes due to prolonged antiviral use and immunosuppression, stressing the need for optimized immune support and careful antiviral selection.
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Background: Remdesivir is FDA-approved for the treatment of hospitalized patients with severe COVID-19. Many patients improve clinically to allow for hospital dismissal before completing the 5-day course. In a prior work, patients who continued remdesivir in an outpatient setting experienced better 28-day clinical outcomes.

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CMV-specific T cells, NK cells, and neutralizing antibodies (nAbs) were assessed in a randomized trial of CMV prevention with preemptive antiviral therapy (PET) versus prophylactic antiviral therapy (PRO) in donor-seropositive/recipient-seronegative (D+R-) liver transplant recipients (LTxR) at 100 days (end of intervention) and at 6 and 12 months after transplant. The PET group had significantly increased numbers of circulating polyfunctional T cells, NK cells, and nAbs compared with the PRO group at day 100, and several CMV immune parameters remained significantly higher by 12 months after transplant. Among PET recipients, preceding CMV viremia (vs.

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Cytomegalovirus (CMV) infection and disease are important causes of morbidity and mortality in transplant recipients. For the purpose of developing consistent reporting of CMV outcomes in clinical trials, definitions of CMV infection and disease were developed and most recently published in 2017. Since then, there have been major developments, including registration of new antiviral agents.

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Introduction: Cytomegalovirus (CMV) is a common opportunistic infection after solid organ transplantation, with significant impact on morbidity and long-term survival. Despite advances in diagnostics and therapeutics, the management of CMV remains very challenging.

Areas Covered: This article reviews emerging data on the clinical utility of laboratory assays that quantify cell-mediated immune responses to CMV.

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Background: To describe outcomes of high-risk patients with coronavirus disease 2019 (COVID-19) treated with sotrovimab, other monoclonal antibodies (mAbs), or antivirals, and patients who did not receive early COVID-19 treatment. We also evaluate the comparative effectiveness of sotrovimab versus no treatment in preventing severe clinical outcomes.

Methods: This observational retrospective cohort study analyzed Mayo Clinic electronic health records.

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Background And Aim: Renal dysfunction is associated with poor outcomes in patients with coronavirus disease 2019 (COVID-19). In an effort to improve outcomes, intravenous remdesivir has been broadly used for the treatment of COVID-19 even in patients with low estimated glomerular filtration rate (eGFR). Our study assessed the residual risk of outcomes of patients with low eGFR despite treatment with remdesivir for COVID-19, during a timeframe prior to the expanded label across all levels of renal function.

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Background: Over 30% of patients with COVID-19 have persistent symptoms that last beyond 30 days and referred to as Long COVID. Long COVID has been associated with a persistent elevation in peripheral cytokines including interleukin-6, interleukin-1β, and tumor necrosis factor-α. This study reports cytokine profiles of patients in our clinic across SARS-COV-2 variant epochs.

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Article Synopsis
  • - The end of the global health emergency has brought some normalcy, but individuals with compromised immunity remain at high risk for severe COVID-19 outcomes, even if vaccinated.
  • - This paper highlights the need for better management of COVID-19 in immunocompromised individuals and points out gaps in current healthcare strategies.
  • - To ensure better protection for this vulnerable group, more research is essential to develop targeted prevention and treatment methods, such as improved vaccines and antiviral treatments.
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Background: A multitude of factors are considered in an infectious disease (ID) training program's meticulous selection process of ID fellows but their correlation to pre and in-fellowship academic success as well as post-fellowship academic success and short-term outcomes is poorly understood. Our goal was to investigate factors associated with subsequent academic success in fellowship as well as post-fellowship short-term outcomes.

Methods: In 2022, we retrospectively analyzed deidentified academic records from 39 graduates of the Mayo Clinic Rochester ID Fellowship Program (1 July 2013- 30 June 2022).

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