Serum aryl hydrocarbon receptor activity is associated with survival in patients with alcohol-associated hepatitis

BACKGROUND AND AIMS

Patients with alcohol-associated hepatitis (AH) have an altered fecal metabolome, including reduced microbiota-derived tryptophan metabolites, which function as ligands for aryl hydrocarbon receptor (AhR). The aim of this study was to assess serum AhR ligand activity in patients with AH.

APPROACH AND RESULTS

The study included 74 controls without AUD, 97 patients with AUD, and 330 patients with AH from 2 different multicenter cohorts (InTeam: 134, AlcHepNet: 196). Serum AhR activity was evaluated using an AhR reporter assay with HepG2-Lucia cells incubated with serum for 24 hours. Serum AhR activity was significantly higher in patients with AH compared with both controls (1.59 vs. 0.96-fold change, p < 0.001) and patients with AUD (1.59 vs. 0.93, p < 0.001). In both AH cohorts, patients with AhR activity ≥ 2.09 had significantly lower cumulative survival rates at 30, 60, 90, and 180 days compared to those with AhR activity < 2.09. When serum AhR activity was used to further stratify patients with severe AH, the cumulative 30, 60, 90, and 180-day survival rates for patients with severe AH and the AhR activity ≥ 2.09 group were all significantly lower than those with an AhR activity < 2.09 group.

CONCLUSIONS

Serum AhR activity was significantly higher in patients with AH compared with controls and individuals with AUD, and this increased activity was associated with higher mortality. Consequently, serum AhR activity holds potential as a prognostic marker.

The potential role of infusions of T regulatory cells in inducing and maintaining liver allograft tolerance

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Early liver transplantation for severe acute alcohol-related hepatitis after more than a decade of experience

In patients with severe acute alcohol-related hepatitis not responding to medical therapy, early liver transplantation (LT) represents the only effective therapy and, when performed within strict and well-defined protocols, it is associated with a clear survival benefit and acceptable rates of return to alcohol use after transplantation. However, there is still high variability in access to LT for patients with severe alcohol-related hepatitis, mainly due to a persistent overemphasis in the pre-LT evaluation on duration of pre-transplant abstinence and the stigma that patients with alcohol-related liver disease often experience, leading to marked inequity of access to this potentially lifesaving procedure and negative health outcomes. Therefore, there is an increasing need for prospective multicentre studies focusing on pre-transplant selection practices and on better interventions to treat alcohol use disorder after LT.

Psychosocial assessment in liver transplantation (LT): an analysis of short-term outcomes

BACKGROUND

Our research showed that patients with alcohol-associated liver disease (ALD) had more severe liver disease than those without a diagnosis of ALD yet were less likely to be selected for transplant listing due to their increased psychosocial vulnerability. This study aims to answer whether this vulnerability translates to worse short-term outcomes after transplant listing.

METHODS

A total of 187 patients were approved for liver transplant listing and are included in the present retrospective study. We collected dates of transplantation, retransplantation, death, and pathologic data for evidence of rejection, and reviewed alcohol biomarkers and documentation for evidence of alcohol use.

RESULTS

The ALD cohort had higher Stanford Integrated Psychosocial Assessment for Transplant (SIPAT) scores (39.4 vs. 22.5, p <0.001) and Model for End-Stage Liver Disease (MELD)-Na scores (25.0 vs. 18.5, p <0.001) compared with the non-ALD cohort. Forty-nine (59.7%) subjects with ALD and 60 (57.1%, p =0.71) subjects without ALD subsequently received a liver transplant. Overall mortality was similar between the 2 groups (20.7% ALD vs. 21.0% non-ALD, p =0.97). Neither the SIPAT score (HR: 0.98, 95% CI: 0.96-1.00, p =0.11) nor MELD-Na score (HR 0.99, 95% CI 0.95-1.02, p =0.40) were associated with mortality. Patients with ALD were more likely to have alcohol biomarkers tested both before (84.1% vs. 24.8% non-ALD, p <0.001) and after liver transplantation (74.0% vs. 16.7% non-ALD, p <0.001). SIPAT score was associated with alcohol use after listing (OR: 1.03, 95% CI: 1.0-1.07, p =0.04), although a return to alcohol use was not associated with mortality (HR: 1.60, 95% CI: 0.63-4.10, p =0.33).

CONCLUSION

Patients with ALD had higher psychosocial risk compared with patients without a diagnosis of ALD who were placed on the waitlist, but had similar short-term outcomes including mortality, transplantation, and rejection. Although a high SIPAT score was predictive of alcohol use, in the short-term, alcohol use after transplant listing was not associated with mortality.

Hepatitis E prevalence and infection in solid-organ transplant recipients in the United States

Hepatitis E virus (HEV) is the most common cause of acute viral hepatitis worldwide. An increased risk for HEV infection has been reported in organ-transplant recipients, mainly from Europe. Prospective data on HEV prevalence in the United States (U.S.) organ transplant population are limited. To determine the prevalence and factors associated with HEV infection among solid organ transplant-recipients, we conducted a prospective, cross-sectional, multicentre study among transplant-recipients and age- and organ-matched waitlist patients. Participants answered a risk-exposure questionnaire and were tested for HEV-RNA (in-house PCR), HEV-IgG, and IgM (ELISA, Wantai). Among 456 participants, 224 were transplant-recipients, and 232 were waitlist patients. The mean age was 58 years, 35% female, and 74% White. HEV seroprevalence of the entire cohort was 20.2% and associated with older age (p < 0.0001) and organ transplantation (p = 0.02). The HEV seropositivity was significantly higher among transplant-recipients compared with waitlist patients (24% vs. 16.4%, p = 0.042). Among transplant recipients, relative-risk of being HEV seropositive increased with older age (RR = 3.4 [1.07-10.74] in patients >70 years compared with ≤50 years, p = 0.037); history of graft hepatitis (2.2 [1.27-3.72], p = 0.005); calcineurin inhibitor use (RR = 1.9 [1.03-3.34], p = 0.02); and kidney transplantation (2.4 [1.15-5.16], p = 0.02). HEV-RNA, genotype 3 was detected in only two patients (0.4%), both transplant-recipients. HEV seroprevalence was higher among transplant-recipients than waitlist patients. HEV should be considered in transplant-recipients presenting with graft hepatitis. Detection of HEV-RNA was rare, suggesting that progression to chronic HEV infection is uncommon in transplant-recipients in the U.S.

Clinical, histological and molecular profiling of different stages of alcohol-related liver disease

OBJECTIVE

Alcohol-related liver disease (ALD) ranges from never-decompensated ALD (ndALD) to the life-threatening decompensated phenotype, known as alcohol-related hepatitis (AH). A multidimensional study of the clinical, histological and molecular features of these subtypes is lacking.

DESIGN

Two large cohorts of patients were recruited in an international, observational multicentre study: a retrospective cohort of patients with ndALD (n=110) and a prospective cohort of patients with AH (n=225). Clinical, analytical, immunohistochemistry and hepatic RNA microarray analysis of both disease phenotypes were performed.

RESULTS

Age and mean alcohol intake were similar in both groups. AH patients had greater aspartate amino transferase/alanine amino transferase ratio and lower gamma-glutamyl transferase levels than in ndALD patients. Patients with AH demonstrated profound liver failure and increased mortality. One-year mortality was 10% in ndALD and 50% in AH. Histologically, steatosis grade, ballooning and pericellular fibrosis were similar in both groups, while advanced fibrosis, Mallory-Denk bodies, bilirubinostasis, severe neutrophil infiltration and ductular reaction were more frequent among AH patients. Transcriptome analysis revealed a profound gene dysregulation within both phenotypes when compare to controls. While ndALD was characterised by deregulated expression of genes involved in matrisome and immune response, the development of AH resulted in a marked deregulation of genes involved in hepatocyte reprogramming and bile acid metabolism.

CONCLUSIONS

Despite comparable alcohol intake, AH patients presented with worse liver function compared with ndALD patients. Bilirubinostasis, severe fibrosis and ductular reaction were prominent features of AH. AH patients exhibited a more profound deregulation of gene expression compared with ndALD patients.

Microwave ablation as bridging to liver transplant for patients with hepatocellular carcinoma: a single-center retrospective analysis

PURPOSE

To evaluate the efficacy and safety of microwave (MW) ablation as first-line locoregional therapy (LRT) for bridging patients with hepatocellular carcinoma (HCC) to liver transplant.

MATERIALS AND METHODS

This retrospective study evaluated 88 patients who received percutaneous MW ablation for 141 tumors as first-line LRT for HCC and listed for liver transplantation at a single medical center between 2011 and 2019. Overall survival rate status-post liver transplant, waitlist retention and disease progression were evaluated using Kaplan-Meier techniques.

RESULTS

Of 88 patients (72M, 16F, mean age 60 years, MELD=11.2) listed for transplant, median waitlist time was 9.4 months (IQR: 5.5 - 18.9). Seventy-one patients (80.7%) received transplant after median wait time of 8.5 months. Seventeen patients (19.3%) were removed from the waitlist, four (4.5%) due to tumors outside of the Milan criteria (HCC-specific dropout). No difference in tumor size or AFP was seen in transplanted vs. non-transplanted patients at time of ablation (2.1 vs. 2.1 cm and 34.4 vs. 34.7 ng/mL for transplanted vs. non-transplanted, respectively, p>0.05). Five of 88 patients (5.1%) experienced adverse events after ablation; however, all recovered. There were no cases of tract seeding. The local tumor progression (LTP) rate was 7.2%. The overall survival status-post liver transplant at 5-years was 76.7% and the disease-specific survival after LT was 89.6% with a median follow-up of 61 months for all patients.

CONCLUSION

MW ablation appears to be safe and effective for bridging patients with HCC to liver transplant without waitlist removal from seeding, adverse events, or local tumor progression.

Psychosocial Assessment Rather Than Severity of Liver Failure Dominates Selection for Liver Transplantation in Patients With Alcohol-Related Liver Disease

The Stanford Integrated Psychosocial Assessment for Transplant (SIPAT) is a validated interview tool to assess psychosocial well-being in candidates for solid organ transplants, with higher scores indicating greater vulnerability. We hypothesized that patients with alcohol-related liver disease (ALD) undergoing liver transplantation (LT) evaluation would have higher SIPAT scores than candidates with non-ALD, but that only patients with ALD who have low scores would be selected. We analyzed retrospectively consecutive adults undergoing LT evaluation from June 2018 to December 2019. Comparisons between patients with ALD and patients with non-ALD were made using the nonparametric Wilcoxon rank sum test plus a multivariate analysis to determine independent predictors for approval. In the study cohort of 358 patients, there were 199 (56%) patients with ALD with a mean age of 55 years, and 133 (67%) were men. There were 159 (44%) patients with non-ALD with a mean age of 57 years, and 95 (60%) were men. Mean Model for End-Stage Liver Disease-sodium scores were similar for selected versus not selected patients with ALD (25 versus 25.6) and selected versus not selected patients with non-ALD (18.3 versus 17.4), although the ALD group had substantially higher Model for End-Stage Liver Disease scores. Patients with ALD had higher mean SIPAT composite and individual domain scores compared with their non-ALD counterparts. SIPAT scores were not affected by age or sex. Proportionately more candidates with non-ALD were selected compared to candidates with ALD (68% versus 42%; P < 0.001; odds ratio for approval of non-ALD versus ALD, 2.9; 95% confidence interval, 1.8-4.7; P < 0.001). Composite SIPAT scores were lower in the selected versus nonselected in both ALD and non-ALD groups, although the SIPAT scores were significantly higher in selected patients with ALD (median, 39) than selected patients with non-ALD (median, 23; P = 0.001). Psychosocial assessment has a greater influence than acuity of liver failure on the selection of patients with ALD for LT listing, whereas psychosocial assessment has a minor influence on the selection of non-ALD candidates.

Psychosocial Barriers and Their Impact on Hepatocellular Carcinoma Care in US Veterans: Tumor Board Model of Care

BACKGROUND

Psychosocial barriers, including low socioeconomic status, homelessness, alcohol and substance use disorders, and psychiatric disorders are prevalent in US veterans. Our study aims to identify the prevalence of psychosocial barriers in veterans diagnosed with hepatocellular carcinoma (HCC), and their impact on receipt of cancer care.

METHODS

A retrospective cohort study was performed of all veterans diagnosed with HCC at the William S. Middleton Memorial Veterans' Hospital in Madison, Wisconsin, whose tumor care was coordinated through a multidisciplinary tumor board. Outcomes included receipt of any HCC-specific therapy and overall survival.

RESULTS

From January 1, 2007, through December 31, 2016, 149 veterans were diagnosed with HCC. Substance use disorders were reported in 124 (83%) patients, psychiatric illness was documented in 55 (37%) patients, 23 (15%) patients had incomes below the poverty threshold, and 7 (5%) were experiencing homelessness. The mean (SD) distance traveled for care was 207.1 (277.9) km; travel and lodging assistance were accessed by 50 (34%) and 33 (22%) veterans, respectively. Seventy-one patients (48%) had HCC exceeding T2 stage at diagnosis. Curative treatment was offered to 78 (52%) patients, with 127 (85%) receiving any HCC-specific care. Median survival from diagnosis was 727 days (95% CI, 488-966).

CONCLUSIONS

Psychosocial barriers were common in our veteran cohort. Individualizing care, and coordination of travel and lodging, assisted in enabling high rates of receipt of HCC-specific therapy and improving patient survival.

Management of hepatocellular carcinoma recurrence after liver transplantation

Despite careful selection for liver transplantation (LT) of patients with hepatocellular carcinoma (HCC), HCC may still recur after LT and is frequently associated with dismal outcome. Tumor factors, including serum alpha-fetoprotein (AFP), the presence of microvascular invasion, tumor grade/differentiation, and largest tumor size are amongst the most important predictors of recurrence after transplantation. The nature of recurrence can be highly variable, but often presents with extra-hepatic involvement. As such, management of patients with HCC can be challenging, and consensus guidelines are lacking. Curative options, with surgery or ablation, which may be applicable in patients with isolated intra-or extrahepatic metastases, offer the best chance for improved long-term outcome in patients with HCC recurrence after transplantation. Most patients with recurrence have unresectable disease, and may benefit from palliative treatments, including intra-arterial therapies and/or systemic therapy.

Trajectory of Serum Bilirubin Predicts Spontaneous Recovery in a Real-World Cohort of Patients With Alcoholic Hepatitis

BACKGROUND AND AIMS

Alcoholic hepatitis (AH) is a severe condition with poor short-term prognosis. Specific treatment with corticosteroids slightly improves short-term survival but is associated with infection and is not used in many centers. A reliable method to identify patients who will recover spontaneously will minimise the numbers of patients who experience side effects of available treatments.

METHODS

We analysed the trajectory of serum bilirubin concentration over the course of hospital admissions in patients with AH to predict spontaneous survival and the need for treatment.

RESULTS

data from 426 patients were analysed. Based on bilirubin trajectory, patients were categorized into three groups: 'fast fallers' (bilirubin <0.8 x admission value at day 7), 'static' (bilirubin of >0.9 - <1.2 x admission value) and 'rapid risers' (bilirubin of ≥1.2 x admission bilirubin). Fast fallers had significantly better 90-day survival compared to other groups (log rank p < .001), and showed no benefit of corticosteroid therapy (OR for survival at 28 days of treatment, 0.94, 95% CI 0.06 - 8.41). These findings remained even amongst patients with severe disease based on initial DF, GAHS or MELD scores.

CONCLUSIONS

We present an intuitive method of classifying patients with AH based on the trajectory of bilirubin over the first week of admission. It is complimentary to existing scores that identify candidates for corticosteroid treatment or assess response to treatment. This method identifies a group of patients with AH who recover spontaneously and can avoid corticosteroid therapy.

The MELD Score Is Superior to the Maddrey Discriminant Function Score to Predict Short-Term Mortality in Alcohol-Associated Hepatitis: A Global Study

INTRODUCTION

Several scoring systems predict mortality in alcohol-associated hepatitis (AH), including the Maddrey discriminant function (mDF) and model for end-stage liver disease (MELD) score developed in the United States, Glasgow alcoholic hepatitis score in the United Kingdom, and age, bilirubin, international normalized ratio, and creatinine score in Spain. To date, no global studies have examined the utility of these scores, nor has the MELD-sodium been evaluated for outcome prediction in AH. In this study, we assessed the accuracy of different scores to predict short-term mortality in AH and investigated additional factors to improve mortality prediction.

METHODS

Patients admitted to hospital with a definite or probable AH were recruited by 85 tertiary centers in 11 countries and across 3 continents. Baseline demographic and laboratory variables were obtained. The primary outcome was all-cause mortality at 28 and 90 days.

RESULTS

In total, 3,101 patients were eligible for inclusion. After exclusions (n = 520), 2,581 patients were enrolled (74.4% male, median age 48 years, interquartile range 40.9-55.0 years). The median MELD score was 23.5 (interquartile range 20.5-27.8). Mortality at 28 and 90 days was 20% and 30.9%, respectively. The area under the receiver operating characteristic curve for 28-day mortality ranged from 0.776 for MELD-sodium to 0.701 for mDF, and for 90-day mortality, it ranged from 0.773 for MELD to 0.709 for mDF. The area under the receiver operating characteristic curve for mDF to predict death was significantly lower than all other scores. Age added to MELD obtained only a small improvement of AUC.

DISCUSSION

These results suggest that the mDF score should no longer be used to assess AH's prognosis. The MELD score has the best performance in predicting short-term mortality.

Patterns of Alcohol Use After Early Liver Transplantation for Alcoholic Hepatitis

BACKGROUND & AIMS

Early liver transplantation (LT) for alcoholic hepatitis (AH) is lifesaving but concerns regarding return to harmful alcohol use remain. We sought to identify distinct patterns of alcohol use post-LT to inform pre-LT candidate selection and post-LT addiction care.

METHODS

Detailed post-LT alcohol use data was gathered retrospectively from consecutive patients with severe AH at 11 ACCELERATE-AH sites from 2006-2018. Latent class analysis identified longitudinal patterns of alcohol use post-LT. Logistic and Cox regression evaluated associations between patterns of alcohol use with pre-LT variables and post-LT survival. A microsimulation model estimated the effect of selection criteria on overall outcomes.

RESULTS

Of 153 LT recipients, 1-, 3-, and 5-year survival were 95%, 88% and 82%. Of 146 LT recipients surviving to home discharge, 4 distinct longitudinal patterns of post-LT alcohol use were identified: Pattern 1 [abstinent](n = 103; 71%), pattern 2 [late/non-heavy](n = 9; 6.2%), pattern 3 [early/non-heavy](n = 22; 15%), pattern 4 [early/heavy](n = 12; 8.2%). One-year survival was similar among the 4 patterns (100%), but patients with early post-LT alcohol use had lower 5-year survival (62% and 53%) compared to abstinent and late/non-heavy patterns (95% and 100%). Early alcohol use patterns were associated with younger age, multiple prior rehabilitation attempts, and overt encephalopathy. In simulation models, the pattern of post-LT alcohol use changed the average life-expectancy after early LT for AH.

CONCLUSIONS

A significant majority of LT recipients for AH maintain longer-term abstinence, but there are distinct patterns of alcohol use associated with higher risk of 3- and 5-year mortality. Pre-LT characteristics are associated with post-LT alcohol use patterns and may inform candidate selection and post-LT addiction care.

Psychosocial Evaluation in Liver Transplantation for Patients with Alcohol-Related Liver Disease

Content available: Author Interview and Audio Recording.

Recovery and outcomes of patients denied early liver transplantation for severe alcohol-associated hepatitis

BACKGROUND AND AIMS

Liver transplantation (LT) in alcohol-associated hepatitis (AH) remains controversial, in part because spontaneous recovery (SR) can occur. There is a paucity of data on SR in patients with severe AH who undergo LT evaluation. The purpose of this study was to determine factors associated with SR and survival in patients with severe AH who undergo LT evaluation.

APPROACH AND RESULTS

This is a retrospective study of ALD patients with Model for End-Stage Liver Disease (MELD) >25 and <90 days abstinence who underwent LT evaluation at a single center between 2012 and 2018. One hundred forty-four patients (median age, 45.5 years; 68.1% male) were included. Forty-nine (34%) underwent LT and 95 (66%) patients did not undergo LT, and of those, 34 (23.6%) experienced SR. Factors associated with recovery were younger age (OR, 0.92; p = 0.004), lower index international normalized ratio (INR; 0.31; p = 0.03), and lower peak MELD (OR, 0.83; p = 0.02). Only 7 patients (20.6%) achieved a compensated state with a MELD <15 and absence of therapy for ascites or HE. Survival was improved in patients who underwent early LT when compared to SR. Survival was impaired in SR following relapse to alcohol use when compared to SR patients who abstained and LT recipients. Among all 6-month survivors of AH, alcohol use trended toward an association with mortality (HR, 2.05; p = 0.17), but only LT was associated with decreased mortality risk (HR, 0.20; p = 0.005).

CONCLUSIONS

SR from AH after LT evaluation is associated with age, index INR, and lower peak MELD. Most recovered patients continue to experience end-stage complications. LT is the only factor associated with lower mortality.

Identification of optimal therapeutic window for steroid use in severe alcohol-associated hepatitis: A worldwide study

BACKGROUND & AIMS

Corticosteroids are the only effective therapy for severe alcohol-associated hepatitis (AH), defined by a model for end-stage liver disease (MELD) score >20. However, there are patients who may be too sick to benefit from therapy. Herein, we aimed to identify the range of MELD scores within which steroids are effective for AH.

METHODS

We performed a retrospective, international multicenter cohort study across 4 continents, including 3,380 adults with a clinical and/or histological diagnosis of AH. The main outcome was mortality at 30 days. We used a discrete-time survival analysis model, and MELD cut-offs were established using the transform-the-endpoints method.

RESULTS

In our cohort, median age was 49 (40-56) years, 76.5% were male, and 79% had underlying cirrhosis. Median MELD at admission was 24 (19-29). Survival was 88% (87-89) at 30 days, 77% (76-78) at 90 days, and 72% (72-74) at 180 days. A total of 1,225 patients received corticosteroids. In an adjusted-survival-model, corticosteroid use decreased 30-day mortality by 41% (hazard ratio [HR] 0.59; 0.47-0.74; p <0.001). Steroids only improved survival in patients with MELD scores between 21 (HR 0.61; 0.39-0.95; p = 0.027) and 51 (HR 0.72; 0.52-0.99; p = 0.041). The maximum effect of corticosteroid treatment (21-30% survival benefit) was observed with MELD scores between 25 (HR 0.58; 0.42-0.77; p <0.001) and 39 (HR 0.57; 0.41-0.79; p <0.001). No corticosteroid benefit was seen in patients with MELD >51. The type of corticosteroids used (prednisone, prednisolone, or methylprednisolone) was not associated with survival benefit (p = 0.247).

CONCLUSION

Corticosteroids improve 30-day survival only among patients with severe AH, especially with MELD scores between 25 and 39.

LAY SUMMARY

Alcohol-associated hepatitis is a condition where the liver is severely inflamed as a result of excess alcohol use. It is associated with high mortality and it is not clear whether the most commonly used treatments (corticosteroids) are effective, particularly in patients with very severe liver disease. In this worldwide study, the use of corticosteroids was associated with increased 30-day, but not 90- or 180-day, survival. The maximal benefit was observed in patients with an MELD score (a marker of severity of liver disease; higher scores signify worse disease) between 25-39. However, this benefit was lost in patients with the most severe liver disease (MELD score higher than 51).

Provider Attitudes and Practices for Alcohol Screening, Treatment, and Education in Patients With Liver Disease: A Survey From the American Association for the Study of Liver Diseases Alcohol-Associated Liver Disease Special Interest Group

BACKGROUND & AIMS

While abstinence-promoting behavioral and pharmacotherapies are part of the therapeutic foundation for alcohol use disorder (AUD) and alcohol-associated liver disease (ALD), these therapies, along with alcohol screening and education, are often underutilized. Our aim was to examine provider attitudes and practices for alcohol screening, treatment and education in patients with liver disease.

METHODS

We conducted a survey of primarily (89%) hepatology and gastroenterology providers within (80%) and outside the United States (20%). Surveys were sent to 921 providers with 408 complete responses (44%), of whom 343 (80%) work in a tertiary liver transplant center.

RESULTS

While alcohol screening rates in liver disease patients was nearly universal, less than half of providers reported practicing with integrated addiction providers, using alcohol biomarkers and screening tools. Safe alcohol use by liver disease patients was felt to exist by 40% of providers. While 60% of providers reported referring AUD patients for behavioral therapy, 71% never prescribed AUD pharmacotherapy due to low comfort (84%). Most providers (77%) reported low addiction education and 90% desired more during GI/hepatology fellowship training. Amongst prescribers, baclofen was preferred, but with gaps in pharmacotherapy knowledge. Overall, there was low adherence to the 2019 AASLD practice guidance for ALD, although higher in hepatologists and experienced providers.

CONCLUSIONS

While our survey of hepatology and gastroenterology providers demonstrated higher rates of alcohol screening and referrals for behavioral therapy, we found low rates of prescribing AUD pharmacotherapy due to knowledge gaps from insufficient education. Further studies are needed to assess interventions to improve provider alignment with best practices for treating patients with AUD and ALD.

The Level of Alcohol Consumption in the Prior Year Does Not Impact Clinical Outcomes in Patients With Alcohol-Associated Hepatitis

The 10-item Alcohol Use Disorders Identification Test (AUDIT-10) and its shorter form, AUDIT-Consumption (AUDIT-C), are questionnaires used to characterize severity of drinking. We hypothesized that liver injury and short-term outcomes of alcohol-associated hepatitis (AH) would correlate with a patient's recent alcohol consumption as determined by AUDIT-10 and AUDIT-C. We analyzed a prospective international database of patients with AH diagnosed based on the National Institute on Alcohol Abuse and Alcoholism (NIAAA) standard definitions. All patients were interviewed using AUDIT-10. Primary outcomes included the discriminatory ability of the AUDIT-10 and AUDIT-C scores for predicting survival status at 28 and 90 days and severity of liver injury, as measured by Model for End-Stage Liver Disease-sodium (MELD-Na). The relationship between AUDIT scores and survival status was quantified by calculating the area under the curve of the receiver operating characteristic analysis. The relationship between AUDIT scores and MELD-Na was examined using correlation coefficients. In 245 patients (age range 25-75 years; 35% female), we found no correlation between AUDIT-10 or AUDIT-C scores and either 28- or 90-day mortality. Similarly, there was no correlation between AUDIT-10 and AUDIT-C and MELD-Na scores. There was a strong positive correlation between MELD-Na and 28- and 90-day mortality. Additional measures of severity of alcohol use (average grams of alcohol consumed per day, years of drinking, convictions for driving under the influence, and rehabilitation attempts) and psychosocial factors (marriage, paid employment, and level of social support) had no influence on MELD-Na. In patients presenting with AH, AUDIT-10 and AUDIT-C were predictors of neither clinical severity of liver disease nor short-term mortality, suggesting that level of alcohol consumption in the prior year is not key to the presenting features or outcome of AH.

Novel treatments for alcoholic hepatitis

PURPOSE OF REVIEW

The current article aims to review the latest literature on updates in therapeutics for alcohol-associated liver disease (ALD), integration of treatment of alcohol use disorder (AUD) into the management of ALD, and the role of liver transplantation for alcoholic hepatitis.

RECENT FINDINGS

ALD has recently become the most common indication for liver transplantation due to the increasing prevalence of AUD and the paucity of therapeutic options. There is broad consensus on the importance of early identification of AUD and the incorporation of its treatment in the management of ALD. New targets for treatment of alcoholic hepatitis include the gut-liver axis, anti-inflammatory drugs, antioxidants, and drugs with hepatic regenerative potential. Fecal transplantation in particular has had favorable outcomes at 1 year. n-Acetylcysteine in addition to corticosteroids, granulocyte colony stimulating factor, and IL-22 have also shown improved short-term outcomes. A number of other therapies are being studied in clinical trials and their results are anxiously awaited.

SUMMARY

In summary, there are several promising therapeutic options under clinical investigation for the treatment of alcoholic hepatitis and ALD; however, alcohol abstinence is key. In the absence of other effective therapies, liver transplantation for ALD remains a life-saving treatment with excellent patient and graft survival.

Liver transplantation for alcoholic hepatitis in the United States: Excellent outcomes with profound temporal and geographic variation in frequency

Medical-refractory severe alcoholic hepatitis (AH) has a high mortality. The national frequency, longer term outcomes and regional practices of AH liver transplantation (LT) in the United States are not well described, despite the increasing mortality from alcohol-associated liver disease. We analyzed the trends in frequency and outcomes of UNOS data on 39 455 adult patients who underwent LT from 2014 to 2019, including AH LT recipients. LTs for AH increased 5-fold, from 28 in 2014 to 138 in 2019, varying 8-fold between UNOS regions. Three transplant centers accounted for 50%-90% of AH LTs within each region. The number of transplant centers performing AH LTs increased from 14 in 2014 to 47 in 2019. AH patients were younger (mean = 39.4 years), had higher MELD scores (mean = 36.8), and were more often on dialysis (46.0%) and in ICU (38.4%), compared to other indications (all P < .05). One- and 5-year graft survivals for AH LT recipients were 91.7% and 81.9%, respectively. The frequency of AH LT is increasing rapidly, with excellent medium-term outcomes. An impact of AH recurrence on patient or graft survival is not apparent in this national analysis. There are marked geographic variations in practices, highlighting the lack of selection criteria standardization.

Intestinal Virome in Patients With Alcoholic Hepatitis

BACKGROUND AND AIMS

Alcoholic hepatitis (AH) is a severe manifestation of alcohol-associated liver disease (ALD) with high mortality. Although gut bacteria and fungi modulate disease severity, little is known about the effects of the viral microbiome (virome) in patients with ALD.

APPROACH AND RESULTS

We extracted virus-like particles from 89 patients with AH who were enrolled in a multicenter observational study, 36 with alcohol use disorder (AUD), and 17 persons without AUD (controls). Virus-like particles from fecal samples were fractionated using differential filtration techniques, and metagenomic sequencing was performed to characterize intestinal viromes. We observed an increased viral diversity in fecal samples from patients with ALD, with the most significant changes in samples from patients with AH. Escherichia-, Enterobacteria-, and Enterococcus phages were over-represented in fecal samples from patients with AH, along with significant increases in mammalian viruses such as Parvoviridae and Herpesviridae. Antibiotic treatment was associated with higher viral diversity. Specific viral taxa, such as Staphylococcus phages and Herpesviridae, were associated with increased disease severity, indicated by a higher median Model for End-Stage Liver Disease score, and associated with increased 90-day mortality.

CONCLUSIONS

In conclusion, intestinal viral taxa are altered in fecal samples from patients with AH and associated with disease severity and mortality. Our study describes an intestinal virome signature associated with AH.

Internet Published Policies Regarding Liver Transplant Eligibility and Substance Use in United States Transplant Centers

Liver transplant centers in the United States retain great autonomy in determining eligibility criteria for a liver transplant. This study aims to define the availability and content of liver transplant centers' publicly available Internet policies regarding eligibility criteria for liver transplant. Three trained undergraduate students performed a structured pilot‐tested assessment of official websites of the United Network for Organ Sharing‐registered liver transplant centers. All 141 liver transplant centers had an accessible website. Some account of eligibility criteria was provided by 53% of centers, while 32% of centers discussed substance use. Only 17% discussed their policy regarding alcohol use in candidates with underlying alcohol use disorder, and only 2% stipulated that 6 months of abstinence was required. While exclusion based on substance use or age was discussed infrequently, insurance coverage requirements, the need for social support, and the need for adherence to medical care were mentioned in 21%, 37%, and 23% of centers, respectively. Conclusion: In 2018, half of liver transplant centers provided some information on their official websites regarding eligibility criteria for liver transplant. Detailed information regarding substance use disorders and social health requirements was rare. The Internet is infrequently used by liver transplant centers as a means to publicly share information regarding selection criteria.

Intestinal Fungal Dysbiosis and Systemic Immune Response to Fungi in Patients With Alcoholic Hepatitis

Chronic alcohol consumption causes increased intestinal permeability and changes in the intestinal microbiota composition, which contribute to the development and progression of alcohol-related liver disease. In this setting, little is known about commensal fungi in the gut. We studied the intestinal mycobiota in a cohort of patients with alcoholic hepatitis, patients with alcohol use disorder, and nonalcoholic controls using fungal-specific internal transcribed spacer amplicon sequencing of fecal samples. We further measured serum anti-Saccharomyces cerevisiae antibodies (ASCA) as a systemic immune response to fungal products or fungi. Candida was the most abundant genus in the fecal mycobiota of the two alcohol groups, whereas genus Penicillium dominated the mycobiome of nonalcoholic controls. We observed a lower diversity in the alcohol groups compared with controls. Antibiotic or steroid treatment was not associated with a lower diversity. Patients with alcoholic hepatitis had significantly higher ASCA levels compared to patients with alcohol use disorder and to nonalcoholic controls. Within the alcoholic hepatitis cohort, patients with levels of at least 34 IU/mL had a significantly lower 90-day survival (59%) compared with those with ASCA levels less than 34 IU/mL (80%) with an adjusted hazard ratio of 3.13 (95% CI, 1.11-8.82; P = 0.031). Conclusion: Patients with alcohol-associated liver disease have a lower fungal diversity with an overgrowth of Candida compared with controls. Higher serum ASCA was associated with increased mortality in patients with alcoholic hepatitis. Intestinal fungi may serve as a therapeutic target to improve survival, and ASCA may be useful to predict the outcome in patients with alcoholic hepatitis.

Bacteriophage targeting of gut bacterium attenuates alcoholic liver disease

Chronic liver disease due to alcohol use disorder contributes markedly to the global burden of disease and mortality^1–3. Alcoholic hepatitis is a severe and life-threatening form of alcohol-associated liver disease. The gut microbiota promotes ethanol-induced liver disease in mice⁴, but little is known about microbial factors responsible for this process. We identified cytolysin, a two-subunit exotoxin secreted by Enterococcus faecalis (E. faecalis)^5,6, to cause hepatocyte death and liver injury. Compared with controls, patients with alcoholic hepatitis have increased fecal numbers of E. faecalis. The presence of cytolysin-positive (cytolytic) E. faecalis correlated with liver disease severity and mortality in patients with alcoholic hepatitis. Using humanized mice colonized with bacteria from feces of patients with alcoholic hepatitis, we investigated the therapeutic effects of bacteriophages that target cytolytic E. faecalis. We found these phages to decrease cytolysin in the liver and abolish ethanol-induced liver disease in humanized mice. Our findings link cytolysin-positive E. faecalis with worse clinical outcomes and mortality in patients with alcoholic hepatitis. We show that bacteriophages can specifically target cytolytic E. faecalis, providing a method to precisely edit the intestinal microbiota. A prospective clinical trial with a larger cohort is required to validate human relevance of our findings and to test whether this new therapeutic approach is effective for patients with alcoholic hepatitis.

Model to Calculate Harms and Benefits of Early vs Delayed Liver Transplantation for Patients With Alcohol-Associated Hepatitis

BACKGROUND & AIMS

Early liver transplantation (without requiring a minimum period of sobriety) for severe alcohol-associated hepatitis (AH) is controversial: many centers delay eligibility until a specific period of sobriety (such as 6 months) has been achieved. To inform ongoing debate and policy, we modeled long-term outcomes of early vs delayed liver transplantation for patients with AH.

METHODS

We developed a mathematical model to simulate early vs delayed liver transplantation for patients with severe AH and different amounts of alcohol use after transplantation: abstinence, slip (alcohol use followed by sobriety), or sustained use. Mortality of patients before transplantation was determined by joint-effect model (based on Model for End-Stage Liver Disease [MELD] and Lille scores). We estimated life expectancies of patients receiving early vs delayed transplantation (6-month wait before placement on the waitlist) and life years lost attributable to alcohol use after receiving the liver transplant.

RESULTS

Patients offered early liver transplantation were estimated to have an average life expectancy of 6.55 life years, compared with an average life expectancy of 1.46 life years for patients offered delayed liver transplantation (4.49-fold increase). The net increase in life expectancy from offering early transplantation was highest for patients with Lille scores of 0.50-0.82 and MELD scores of 32 or more. Patients who were offered early transplantation and had no alcohol use afterward were predicted to survive 10.85 years compared with 3.62 years for patients with sustained alcohol use after transplantation (7.23 life years lost). Compared with delayed transplantation, early liver transplantation increased survival times in all simulated scenarios and combinations of Lille and MELD scores.

CONCLUSIONS

In a modeling study of assumed carefully selected patients with AH, early vs delayed liver transplantation (6 months of abstinence from alcohol before transplantation) increased survival times of patients, regardless of estimated risk of sustained alcohol use after transplantation. These findings support early liver transplantation for patients with severe AH. The net increase in life expectancy was maintained in all simulated extreme scenarios but should be confirmed in prospective studies. Sustained alcohol use after transplantation significantly reduced but did not eliminate the benefits of early transplantation. Strategies are needed to prevent and treat posttransplantation use of alcohol.

Efficacy and safety of ombitasvir/paritaprevir/ritonavir and dasabuvir with low-dose ribavirin in patients with chronic hepatitis C virus genotype 1a infection without cirrhosis

Patients infected with hepatitis C virus (HCV) treated with interferon-free direct-acting antivirals may still require ribavirin. However, ribavirin is associated with adverse events that can limit its use. This open-label, multicentre, Phase 3 study evaluated the safety and efficacy of ombitasvir/paritaprevir/ritonavir + dasabuvir (OBV/PTV/r + DSV) with low-dose ribavirin for 12 weeks in genotype 1a-infected patients without cirrhosis. The primary efficacy endpoint was sustained virologic response at post-treatment Week 12 (SVR12). The primary safety endpoint was haemoglobin <10 g/dL during treatment and decreased from baseline. Overall, 105 patients enrolled. The SVR12 rate was 89.5% (n/N = 94/105; 95% CI, 83.7-95.4). The study did not achieve noninferiority versus the historic SVR12 rate for OBV/PTV/r + DSV plus weight-based ribavirin. Five patients experienced virologic failure, four discontinued, and two had missing SVR12 data. Excluding nonvirologic failures, the SVR12 rate was 94.9% (n/N = 94/99). One patient met the primary safety endpoint. OBV/PTV/r + DSV plus low-dose ribavirin offers an alternative option for patients in whom full-dose ribavirin may compromise tolerability, although noninferiority to the weight-based ribavirin regimen was not met.

Predicting Low Risk for Sustained Alcohol Use After Early Liver Transplant for Acute Alcoholic Hepatitis: The Sustained Alcohol Use Post-Liver Transplant Score

Early liver transplant (LT) for alcohol-associated disease (i.e., without a specific sobriety period) is controversial but increasingly used. Using the multicenter American Consortium of Early Liver Transplantation for Alcoholic Hepatitis (ACCELERATE-AH) cohort, we aimed to develop a predictive tool to identify patients pretransplant with low risk for sustained alcohol use posttransplant to inform selection of candidates for early LT. We included consecutive ACCELERATE-AH LT recipients between 2012 and 2017. All had clinically diagnosed severe alcoholic hepatitis (AH), no prior diagnosis of liver disease or AH, and underwent LT without a specific sobriety period. Logistic and Cox regression, classification and regression trees (CARTs), and least absolute shrinkage and selection operator (LASSO) regression were used to identify variables associated with sustained alcohol use post-LT. Among 134 LT recipients for AH with median period of alcohol abstinence pre-LT of 54 days, 74% were abstinent, 16% had slips only, and 10% had sustained alcohol use after a median 1.6 (interquartile range [IQR]: 0.7-2.8) years follow-up post-LT. Four variables were associated with sustained use of alcohol post-LT, forming the Sustained Alcohol Use Post-LT (SALT) score (range: 0-11): >10 drinks per day at initial hospitalization (+4 points), multiple prior rehabilitation attempts (+4 points), prior alcohol-related legal issues (+2 points), and prior illicit substance abuse (+1 point). The C statistic was 0.76 (95% confidence interval [CI]: 0.68-0.83). A SALT score ≥5 had a 25% positive predictive value (95% CI: 10%-47%) and a SALT score of <5 had a 95% negative predictive value (95% CI: 89%-98%) for sustained alcohol use post-LT. In internal cross-validation, the average C statistic was 0.74. Conclusion: A prognostic score, the SALT score, using four objective pretransplant variables identifies candidates with AH for early LT who are at low risk for sustained alcohol use posttransplant. This tool may assist in the selection of patients with AH for early LT or in guiding risk-based interventions post-LT.

Towards Standardizing the Alcoholism Evaluation Of Potential Liver Transplant Recipients

Aims

For teams around the world, alcoholic liver disease patients comprise the largest, and clinically most controversial, group applying for liver transplant. And yet evaluation decisions for them remain highly variable by locale.

Methods

Targeting standardized assessment, we provide guidelines on what information the transplant team should seek, from what sources, and how best to make use of it. This report focuses on 'what to do and how to do it' in providing appropriate assessments for this complex patient group.

Results

Proper evaluation includes (a) taking the clinical history from the patient and a required, corroborating third person, (b) assessing patient cognition, (c) establishing alcohol/substance use diagnosis to differentiate alcohol dependence, abuse and polysubstance dependence, (d) assessing ambivalence in primary alcohol addiction, (e) measuring social stability and (f) using Vaillant's factors for abstinence prognosis.

Conclusions

Properly applied, these six factors will allow standardized selection in most cases taken across programs despite differences in resources, available expertise and decision practices.

Short Summary

This report focuses on the essentials of the psychiatric/behavioral evaluation for 'alcoholic' persons referred for liver transplant. Attention to those essentials offers clinical standardization across transplant programs in different locales.

Outcomes of Early Liver Transplantation for Patients With Severe Alcoholic Hepatitis

BACKGROUND & AIMS

The American Consortium of Early Liver Transplantation for Alcoholic Hepatitis comprises 12 centers from 8 United Network for Organ Sharing regions studying early liver transplantation (LT) (without mandated period of sobriety) for patients with severe alcoholic hepatitis (AH). We analyzed the outcomes of these patients.

METHODS

We performed a retrospective study of consecutive patients with a diagnosis of severe AH and no prior diagnosis of liver disease or episodes of AH, who underwent LT before 6 months of abstinence from 2006 through 2017 at 12 centers. We collected data on baseline characteristics, psychosocial profiles, level of alcohol consumption before LT, disease course and treatment, and outcomes of LT. The interval of alcohol abstinence was defined as the time between last drink and the date of LT. The primary outcomes were survival and alcohol use after LT, defined as slip or sustained.

RESULTS

Among 147 patients with AH who received liver transplants, the median duration of abstinence before LT was 55 days; 54% received corticosteroids for AH and the patients had a median Lille score of 0.82 and a median Sodium Model for End-Stage Liver Disease score of 39. Cumulative patient survival percentages after LT were 94% at 1 year (95% confidence interval [CI], 89%-97%) and 84% at 3 years (95% CI, 75%-90%). Following hospital discharge after LT, 72% were abstinent, 18% had slips, and 11% had sustained alcohol use. The cumulative incidence of any alcohol use was 25% at 1 year (95% CI, 18%-34%) and 34% at 3 years (95% CI, 25%-44%) after LT. The cumulative incidence of sustained alcohol use was 10% at 1 year (95% CI, 6%-18%) and 17% at 3 years (95% CI, 10%-27%) after LT. In multivariable analysis, only younger age was associated with alcohol following LT (P = .01). Sustained alcohol use after LT was associated with increased risk of death (hazard ratio, 4.59; P = .01).

CONCLUSIONS

In a retrospective analysis of 147 patients who underwent early LT (before 6 months of abstinence) for severe AH, we found that most patients survive for 1 year (94%) and 3 years (84%), similar to patients receiving liver transplants for other indications. Sustained alcohol use after LT was infrequent but associated with increased mortality. Our findings support the selective use of LT as a treatment for severe AH. Prospective studies are needed to optimize selection criteria, management of patients after LT, and long-term outcomes.

Dysregulation of serum bile acids and FGF19 in alcoholic hepatitis

BACKGROUND & AIMS

The degree of cholestasis is an important disease driver in alcoholic hepatitis, a severe clinical condition that needs new biomarkers and targeted therapies. We aimed to identify the largely unknown mechanisms and biomarkers linked to cholestasis in alcoholic hepatitis.

METHODS

Herein, we analyzed a well characterized cohort of patients with alcoholic hepatitis and correlated clinical and histological parameters and outcomes with serum bile acids and fibroblast growth factor 19 (FGF19), a major regulator of bile acid synthesis.

RESULTS

We found that total and conjugated bile acids were significantly increased in patients with alcoholic hepatitis compared with controls. Serum FGF19 levels were strongly increased and gene expression of FGF19 was induced in biliary epithelial cells and ductular cells of patients with alcoholic hepatitis. De novo bile acid synthesis (CYP7A1 gene expression and C4 serum levels) was significantly decreased in patients with alcoholic hepatitis. Importantly, total and conjugated bile acids correlated positively with FGF19 and with disease severity (model for end-stage liver disease score). FGF19 correlated best with conjugated cholic acid, and model for end-stage liver disease score best with taurine-conjugated chenodeoxycholic acid. Univariate analysis demonstrated significant associations between FGF19 and bilirubin as well as gamma glutamyl transferase, and negative correlations between FGF19 and fibrosis stage as well as polymorphonuclear leukocyte infiltration, in all patients with alcoholic hepatitis.

CONCLUSION

Serum FGF19 and bile acids are significantly increased in patients with alcoholic hepatitis, while de novo bile acid synthesis is suppressed. Modulation of bile acid metabolism or signaling could represent a promising target for treatment of alcoholic hepatitis in humans.

LAY SUMMARY

Understanding the underlying mechanisms that drive alcoholic hepatitis is important for the development of new biomarkers and targeted therapies. Herein, we describe a molecule that is increased in patients with alcoholic hepatitis. Modulating the molecular pathway of this molecule might lead to promising targets for the treatment of alcoholic hepatitis.

Controversies in clinical trials for alcoholic hepatitis

Alcoholic hepatitis (AH) is the most severe form of alcoholic liver disease, contributing to significant morbidity and mortality. Yet, the only available therapies that improve survival are corticosteroids and liver transplantation, with no new drugs successfully developed for decades. This article briefly describes the current state of affairs in AH therapy and examines the practical and ethical challenges of conducting controlled trials in patients with severe AH. While prednisolone is considered standard of care in severe AH, this recommendation remains controversial given the marginal benefits and questionable long-term safety of steroids. Placebo-controlled trials without steroids may be necessary and ethically justified in certain populations with AH who have not been adequately investigated. Ultimately, we suggest that the field will advance with the development of a plausible animal model of true AH, a consensus on a composite clinical endpoint that does not rely solely on mortality, as well as the adoption of the NIAAA Alcoholic Hepatitis Consortia recommendations regarding standard definitions and when to request a liver biopsy prior to study entry.

Indications for and outcomes of liver transplantation in patients with alcohol-associated liver disease

The manufacture and consumption of alcohol are ubiquitous and as old as time. Alcohol use disorder (AUD) is defined as a problematic pattern of alcohol use leading to clinically significant impairment. The physical injuries that result from excessive alcohol consumption are varied including end-organ damage to liver (alcohol-associated liver disease [ALD]), pancreas, brain and heart, and systemic consequences including several forms of cancer. Liver transplantation (LT) remains the treatment of last resort for life-threatening liver disease. LT provides a valuable magnifying glass under which to examine the complex interactions between social drinking, AUD, and ALD. ALD is the second most frequent indication for LT in the US (data of 2015). We review the current data on evaluation of patients with AUD and ALD for liver transplantation; on the significance of abstinence from alcohol in patient selection and pre- and post-LT management. We discuss monitoring for relapse prior to and after LT. Finally, we look at outcomes, first from the perspective of impact on the allograft and then the perspective of maintaining the health of the LT patient with AUD, which includes management of addiction.

The Utilization of Palliative Care Services in Patients with Cirrhosis who have been Denied Liver Transplantation: A Single Center Retrospective Review

INTRODUCTION AND AIM

Utilization of palliative care services in patients dying of end-stage liver disease (ESLD) is understudied. We performed a retrospective review of palliative care services among patients with ESLD unsuitable for liver transplantation (LT) at a tertiary care center.

MATERIAL AND METHODS

Deceased ESLD patients considered unsuitable for LT from 2007-2012 were identified. Patients were excluded if they received a transplant, had an incomplete workup, were lost to follow up or whose condition improved so LT was not needed. Of the 1,175 patients reviewed, 116 met inclusion criteria.

RESULTS

Forty patients (34.4%) received an inpatient palliative care (PC) consultation and forty-one patients (35.3%) were referred directly to hospice. Thirty-three patients (28.4%) transitioned to comfort measures without PC consultation (median survival < 1 day). The median interval between LT denial and PC consultation or hospice was 28 days. Median survival after PC consult or hospice referral was 15 days. In conclusion, in a single center retrospective review of ESLD patients, palliative care services, when utilized, were for care at the very end of life. Without consultation, aggressive interventions continued until hours before death. We propose that ESLD patients could benefit from PC consultation at time of LT evaluation or based on MELD scores.

High-Dose Acyclovir for Cytomegalovirus Prophylaxis in Seropositive Abdominal Transplant Recipients

Background: Following abdominal solid organ transplant (aSOT), valganciclovir (VGC) is recommended for cytomegalovirus (CMV) prophylaxis. This agent is associated with efficacy concerns, toxicity, and emergence of ganciclovir resistance. Objective: To evaluate the incidence of high-dose acyclovir (HD-A) prophylaxis failure in seropositive aSOT recipients (R+). Methods: This was a retrospective, single-center study of R+ transplanted without lymphocyte-depleting induction between January 1, 2000, and June 30, 2013, discharged with 3 months of HD-A prophylaxis (800 mg 4 times daily). The primary outcome was incidence of prophylaxis failure. Secondary outcomes were incidence of biopsy-proven tissue-invasive disease and prophylaxis failure for each allograft subgroup. Results: A total of 1525 patients met inclusion criteria: 944 renal (RTX), 108 simultaneous pancreas-kidneys (SPK), 462 liver (LTX), and 11 pancreas (PTX) transplant recipients. The composite rate of HD-A prophylaxis failure was 7%; incidence of tissue-invasive disease was 0.4%. Failure rates were 4.5%, 6.1%, 11%, and 20% in the RTX, SPK, LTX, and PTX populations, respectively; tissue-invasive disease rates were 0.2%, 0%, 0.7%, and 10%. Failure occurred more frequently in the LTX and PTX populations ( P < 0.0001, HR = 2.6; P = 0.04 HR = 4.4). Incidence of tissue-invasive disease was minimal and not different in the RTX, LTX and SPK populations ( P = 0.34). When evaluating recipients of seronegative allografts (D−), the composite failure rate was 3.4% with no significant difference between allograft subgroups ( P = 0.45). Conclusion: HD-A may be a reasonable prophylaxis alternative for D−/R+ recipients, in the absence of lymphocyte-depleting induction, if low incidence viremia is tolerable. Future studies are needed to determine the long-term impact of CMV viremia in the setting of this prophylaxis approach.