Six month abstinence rule for liver transplantation in severe alcoholic liver disease patients

A Tailored Virtual Program for Alcohol Use Disorder Treatment Among Liver Transplant Candidates and Recipients Is Feasible and Associated With Lower Post-Transplant Relapse

BACKGROUND

Alcohol-associated liver disease (ALD) is a leading indication for liver transplant (LT) in the United States. Rates of early liver transplant (ELT) with less than 6 months of sobriety have increased substantially. Patients who receive ELT commonly have alcohol-associated hepatitis (AH) and are often too ill to complete an intensive outpatient program (IOP) for alcohol use disorder (AUD) prior to LT. ELT recipients feel alienated from traditional IOPs.

METHODS

We implemented Total Recovery-LT, a tailored virtual outpatient IOP specific for patients under evaluation or waitlisted for LT who were too ill to attend community-based alcohol treatment programs. The 12-week program consisted of weekly group and individual counseling delivered by a master's level Certified Addiction Counselor trained in the basics of LT.  Treatment consisted of 12-Step Facilitation, Motivational Interviewing, and Cognitive Behavioral Therapy. We report on program design, implementation, feasibility and early outcomes.

RESULTS

From March 2021 to September 2022, 42 patients (36% female, 23 in LT evaluation, 19 post-transplant) enrolled across five cohorts with 76% (32/42) completing the program. Alcohol relapse was more common among noncompleters versus those who completed the program (8/10, 80% vs. 7/32, 22%, p = 0.002). History of trauma or post-traumatic stress symptoms were associated with lower likelihood of completion. Patients' desire for continued engagement after completion led to the creation of a monthly alumni group.

CONCLUSIONS

Our integrated IOP model for patients with high-risk AUD in LT evaluation or post-transplant is well-received by patients and could be considered a model for LT programs.

Long-Circulating Vasoactive 1,18-Octadecanedioic Acid-Terlipressin Conjugate

Hepatorenal syndrome (HRS) is a life-threatening complication of end-stage liver disease first reported over a century ago, but its management still poses an unmet challenge. A therapeutic agent found to stabilize the condition is a short cyclic peptide, vasopressin analogue, terlipressin (TP). While TP is commonly prescribed for HRS patients in most parts of the world, it was only recently approved for use in the United States. TP exhibits short circulation half-lives and adverse side effects associated with the dose required. Herein, we present a 1,18-octadecanedioic acid (ODDA) conjugate of the cyclic peptide (ODDA-TP), which enables noncovalent binding to serum albumin via native fatty acid binding modes. ODDA-TP is demonstrated to outperform TP alone in studies including in vitro cellular receptor activation, stability in plasma, pharmacokinetics, and performance in vivo in rats. Specifically, ODDA-TP had an elimination half-life 20 times that of TP alone while exhibiting a superior safety profile.

Evolution of Liver Transplantation Indications: Expanding Horizons

Liver transplantation (LT) has significantly transformed the prognosis of patients with end-stage liver disease and hepatocellular carcinoma (HCC). The traditional epidemiology of liver diseases has undergone a remarkable shift in indications for LT, marked by a decline in viral hepatitis and an increase in metabolic dysfunction-associated steatotic liver disease (MASLD), along with expanded indications for HCC. Recent advancements in surgical techniques, organ preservation and post-transplant patients' management have opened new possibilities for LT. Conditions that were historically considered absolute contraindications have emerged as potential new indications, demonstrating promising results in terms of patient survival. While these expanding indications provide newfound hope, the ethical dilemma of organ scarcity persists. Addressing this requires careful consideration and international collaboration to ensure equitable access to LT. Multidisciplinary approaches and ongoing research efforts are crucial to navigate the evolving landscape of LT. This review aims to offer a current overview of the primary emerging indications for LT, focusing on acute-on-chronic liver failure (ACLF), acute alcoholic hepatitis (AH), intrahepatic and perihilar cholangiocarcinoma (i- and p-CCA), colorectal liver metastasis (CRLM), and neuroendocrine tumor (NET) liver metastases.

The future of hepatology

The field of hepatology has made impressive progress over its ~75 years of existence. Advances in understanding liver function and its dysregulation in disease, genetic determinants of disease, antiviral therapy, and transplantation have transformed the lives of patients. However, there are still significant challenges that require ongoing creativity and discipline, particularly with the emergence of fatty liver diseases, as well as managing autoimmune disease, cancer, and liver disease in children. Diagnostic advances are urgently needed to accelerate risk stratification and efficient testing of new agents with greater precision in enriched populations. Integrated, holistic care models should be extended beyond liver cancer to diseases like NAFLD with systemic manifestations or extrahepatic comorbidities such as cardiovascular disease, diabetes, addiction, and depressive disorders. To meet the growing burden of asymptomatic liver disease, the workforce will need to be expanded by incorporating more advanced practice providers and educating other specialists. The training of future hepatologists will benefit from incorporating emerging skills in data management, artificial intelligence, and precision medicine. Continued investment in basic and translational science is crucial for further progress. The challenges ahead are significant, but with collective effort, the field of hepatology will continue to make progress and overcome obstacles.

Liver transplantation for alcohol-associated hepatitis

PURPOSE OF REVIEW

Early liver transplantation is emerging as a treatment option for severe alcohol-associated hepatitis refractory to pharmacotherapies. This review outlines the current status of transplantation for alcohol-associated hepatitis and the treatment of alcohol use disorder after liver transplantation.

RECENT FINDINGS

Rates of early liver transplantation for alcohol-associated hepatitis are increasing with significant heterogeneity in practices across the Unites States. Recent studies have demonstrated a substantial survival benefit in patients transplanted for alcohol-associated hepatitis with improved outcomes in early vs. late transplantation, first vs. prior hepatic decompensation, and posttransplant abstinence/delayed relapse vs. early return to alcohol use. Several prediction algorithms have been developed to ascertain patients' risk of alcohol relapse and aid in candidate selection, though data on treatment of alcohol use disorders in transplant recipients remains limited.

SUMMARY

Although controversial, early liver transplantation for severe alcohol-associated hepatitis has shown to be a lifesaving intervention. Additional research is needed to evaluate its long-term outcomes, optimize candidate selection, and understand treatment of alcohol use disorder posttransplant.

Ethical and allocation issues in liver transplant candidates with alcohol related liver disease

In the past decade, alcohol-related liver disease (ALD) has become the leading indication for liver transplantation (LT) in the United States. Despite this major development, there still remains some controversy in a distinct subset of this patient population, those presenting with alcoholic hepatitis (AH). There is significant debate within the transplant community regarding acceptance criteria for patients with AH requiring LT, especially those with less than 6 months of sobriety. With that being said, LT in the setting of ALD and AH has shown an improvement in survival rates; additionally, many studies have reported that careful selection of patients with ALD has produced excellent post-transplant outcomes even if transplant occurred with less than 6 months of sobriety. In this review, we aim to discuss the ethical and allocation-associated issues that arise when considering ALD and/or AH for LT; furthermore, we delve into the history, controversies, current guidelines, and future directions of LT in this subgroup.

The chosen and the unchosen: How eligibility for liver transplant influences the lived experiences of patients with advanced liver disease

Advanced liver disease is often uncurable and fatal. Liver transplant is the only curative option for patients with advanced, irreversible liver disease, but the need for new livers far exceeds the supply. Patients with the greatest need as well as the greatest likelihood of benefit, based on a complex array of biomedical and psychosocial considerations, are prioritized for transplant. The opportunity to receive a life-saving surgery no doubt has enormous consequences for patients and their healthcare providers, as does the absence of that opportunity. But these consequences are poorly characterized, especially for patients deemed poor candidates for liver transplant. Through in-depth interviews with patients living with advanced liver disease and the providers who care for them, we explore how eligibility status affects illness experiences, including patients' interactions with clinicians, knowledge about their disease, expectations for the future, and efforts to come to terms with a life-limiting illness. We describe how the clinical and social requirements needed to secure eligibility for liver transplant lend themselves to a clinical and cultural logic that delineates "worthy" and "unworthy" patients. We describe how providers and candidates discuss the possibility of moral redemption for such patients through transplant surgeries, a discourse notably absent among patients not eligible for transplant.

Psychosocial characteristics of alcoholic and non-alcoholic liver disease recipient candidates in liver transplantation: a prospective observational study

Background

There are long-standing controversies about the transplant indications for alcoholic liver disease (ALD), because of the recognition that ALD is fundamentally self-inflicted. However, it is unclear whether psychosocial characteristics of ALD are different from that of non-alcoholic liver disease (NALD) in the selection of liver transplantation (LT) recipients. We aimed to clarify the psychosocial characteristics of ALD recipients (ALD-R)/ALD recipient candidates (ALD-RC) and NALD recipients (NALD-R)/ NALD recipient candidates (NALD-RC).

Methods

From 2011 to 2019, 75 patients were enrolled in this prospective observational study (ALD-RC, n = 19; NALD-RC, n = 56), LT were carried out as follow; ALD-R, n = 6; NALD-R, n = 52. We evaluated psychosocial characteristics in the preoperative period and 3, 12 months after LT (ALD-R, n = 3/3; NALD-R, n = 28/25). The following scales were used to evaluate psychosocial characteristics: Visual Analogue Scale, Alcohol Use Disorders Identification Test, Hospital Anxiety and Depression Scale, Beck Depression Inventory, Brief Evaluation of Medication Influences and Beliefs, Social Support Questionnaire (SSQ), Temperament and Character Inventory, Parental Bonding Instrument (PBI), the Short Form Health Survey (SF-36).

Results

When evaluating on the basis of abstinence rule, a comparison of ALD-RC and NALD-RC in the preoperative period identified similar patterns of psychosocial characteristics, except that the NALD-RC scored higher on the PBI item “overprotection from mother” (P < 0.05). The only significant difference between ALD-R and NALD-R after liver transplantation was in SSQ scores at 3 months.

Conclusion

The psychosocial characteristics of ALD-RC and NALD-RC may be similar when evaluated on the basis of Japan’s abstinence rule. This result also imply that the psychosocial characteristics of ALD-RC may differ from the previously reported psychosocial characteristics of alcohol dependent patients. These findings have the potential to provide helpful information for the evaluation of ALD-RC.

Acute-on-Chronic Liver Failure: Pathophysiological Mechanisms and Management

Acute-on-chronic liver failure (ACLF) is a multifaceted condition with poor treatment options and high short-term mortality. ACLF can develop in patients with or without liver cirrhosis, where patients with decompensated cirrhosis display a higher risk of short-term mortality. Pathophysiological mechanisms include systemic inflammation due to bacterial and fungal infections and acute hepatic insult with drug, alcohol, and viral hepatitis. Cryptogenic factors also contribute to the development of ACLF. The clinical outcome of patients with ACLF gets further complicated by the occurrence of variceal hemorrhage, hepatorenal syndrome, hepatic encephalopathy, and systemic immune dysfunction. Regardless of the better understanding of pathophysiological mechanisms, no specific and definitive treatment is available except for liver transplantation. The recent approach of regenerative medicine using mesenchymal stem cells (MSCs) could be advantageous for the treatment of ACLF as these cells can downregulate inflammatory response by inducing antiinflammatory events and prevent hepatic damage and fibrosis by inhibiting hepatic stellate cell activation and collagen synthesis. Moreover, MSCs are involved in tissue repair by the process of liver regeneration. Considering the broad therapeutic potential of MSCs, it can serve as an alternative treatment to liver transplant in the near future, if promising results are achieved.

When demand exceeds supply: Liver transplantation due to alcohol use disorder in Austria

Background

Alcohol use disorder (AUD) is associated with a high prevalence rate and causes a significant burden on health systems globally. The most severe condition associated with AUD is end-stage alcohol-related liver disease (ARLD), for which liver transplantation (LTX) is the only curative therapy. However, the determination of key epidemiologic figures of both conditions is limited by several difficulties and challenges. Therefore, the goal of this paper is to discuss different epidemiological models to estimate AUD and ARLD prevalence, and compare the results of these models with LTX data.

Methods

A literature search for epidemiological models estimating the prevalence of AUD and associated secondary diseases was conducted. Identified approaches are discussed and recalculated, applying the newest available data for Austria. The thus estimated numbers were, in a further step, set in relation to the national LTX statistics.

Results

Besides health survey-based estimations and models based on economic data, estimations based on the mortality of ARLD (Jellinek formula) were identified. Depending on the prediction scenario, the calculated rates of prevalence of AUD ranged between 4.1% and 10.1% for the population aged older than 15 years. Furthermore, while the prevalence of secondary diseases due to AUD is high, only a marginal proportion (about 4%) of end-stage ARLD patients receive a new organ.

Conclusion

These results suggest that the prevalence of AUD and associated diseases remain underestimated. Furthermore, a pronounced discrepancy between the number of ARLD deaths and the number of LTXs due to ARLD, and distinct regional differences in the supply of LTXs, were found.

Intermittent high-flux albumin dialysis with continuous venovenous hemodialysis for acute-on-chronic liver failure and acute kidney injury

Acute-on-chronic liver failure (ACLF) requiring intensive medical care and associated with acute kidney injury (AKI) has a mortality rate as high as 90% due to the lack of effective therapies. In this study, we assessed the effects of intermittent high-flux single-pass albumin dialysis (SPAD) coupled with continuous venovenous hemodialysis (CVVHD) on 28-day and 90-day survival and an array of clinical and laboratory parameters in patients with severe ACLF and renal insufficiency. Sixteen patients were studied. The diagnosis of ACLF and AKI was made in accordance with current EASL Clinical Practice Guidelines, including the recommendations of the International Club of Ascites. All patients received SPAD/CVVHD treatments as the blood purification therapy to support liver, kidneys, and other organs. Five patients were transplanted and 11 were not listed for transplantation because of active alcoholism. Data at the initiation of SPAD/CVVHD were compared with early morning data after the termination of the extracorporeal treatment phase. All patients had ACLF and renal insufficiency with 13/16 additionally fulfilling the AKI criteria. A total of 37 SPAD/CVVHD treatments were performed [2.3 ± 1.4]. The baseline MELD-Na score was 37.6 ± 6.6 and decreased to 33.4 ± 8.7 after SPAD/CVVHD (P < 0.001). In parallel, the CLIF-C ACLF grade and OF score, estimated at 28- and 90-day mortality, AKI stage, hepatic encephalopathy grade, and liver function tests were lowered (P = 0.001-0.032). The 28- and 90-day survivals were 56.2% overall and 53.8% in AKI. Survival in patients not transplanted (n = 11) was 45.4%. In patients with severe ACLF and AKI, the renal replacement therapy coupled with high-performance albumin dialysis improved estimated 28- and 90-day survival and several key clinical and laboratory parameters. It is postulated that these results may be further improved with earlier intervention and more SPAD treatments per patient. High-performance albumin dialysis improves survival and key clinical and laboratory parameters in severe ACLF and AKI.

Severe acute alcoholic hepatitis and liver transplant: A never-ending mournful story

Severe acute alcoholic liver disease (SAAH) unresponsive to medical therapy shows one-year-mortality rates of up to 90%. Most transplant centers request six months of alcohol abstinence prior to transplantation, the so-called "6-month rule." This regulation is not based on strong evidence, repeatedly making it a topic of controversial debates. The majority of patients with SAAH will die before fulfilling the 6-month rule. Therefore, liver transplantation (LT) protocols are becoming more flexible towards the rigid abstinence regulation, especially concerning SAAH patients. We conducted a literature review regarding LT in SAAH and its outcomes, including post-transplant mortality and recidivism. We studied available data on PubMed from 2011 and onwards whilst including articles dealing with genetic components, medical therapy and historic snapshots of alcoholism. Emerging studies recommend LT in SAAH not responding to medical therapies even without realizing the required abstinence period, since the majority of these patients would die within 6 months. SAAH without response to medical therapy has one-year-mortality rates of up to 90%. The 6-month rule is not based on strong evidence and is repeatedly a topic of controversial debates. There is genetic linkage to alcoholism and medical therapy is not as effective as estimated, yet. The 6-months-regulation has not shown to evidently decrease the risk of recidivism post-LT, which is a lifesaving treatment in SAAH patients. Insisting on rigid sobriety rules results in excluding patients with a low risk of recidivism from being transplanted. Moreover, the genetic linkage of alcoholism must be recognized.

Meta-analysis of patient survival and rate of alcohol relapse in liver-transplanted patients for acute alcoholic hepatitis

PURPOSE

This review investigated survival and alcoholic relapse following liver transplantation (LT) in patients with severe acute alcoholic hepatitis (AH) without 6 months of alcohol abstinence.

METHODS

All studies comparing acute AH patients undergoing LT with a control group were included. CENTRAL, MEDLINE, and Web of Science databases were searched. Survival benefits or odds ratios (OR) and 95% confidence intervals (CI) were assessed by meta-analyses using a random effects model. The study was registered in PROSPERO (CRD42017057971). According to the search results, two separate meta-analyses were performed: meta-analysis A compared early LT with medical therapy alone in patients with severe AH that were not responding to medical therapy and meta-analysis B compared LT outcome in patients with AH and chronic alcoholic cirrhosis (AC).

RESULTS

The search yielded 2232 articles. Eight studies were included in the two meta-analyses-two studies in meta-analysis A and six studies in meta-analysis B. The two studies (n = 70) included in meta-analysis A revealed that 1-year patient survival was significantly higher in the LT group compared with the medical therapy-alone group (survival benefit, 15.88; 95% CI, 3.98-63.35; p < 0.0001). The six studies in meta-analysis B (including 1091 patients) showed that 1-year (survival benefit, 1.65; 95% CI, 0.95-2.89; p = 0.08), 3-year (survival benefit, 1.31; 95% CI, 0.79-2.18; p = 0.30), and 5-year survival (survival benefit, 1.54; 95% CI, 0.92-2.56; p = 0.10) were not significantly different between AH and AC groups. There was no significant difference in the rate of alcohol relapse between the groups (OR, 1.26; 95% CI, 0.53-2.96; p = 0.60).

CONCLUSIONS

Early LT is a life-saving treatment for AH patients that do not respond to medical therapy. The chance of alcohol relapse after LT is not increased in selected patients.

Liver transplantation and alcoholic liver disease: History, controversies, and considerations

Alcohol consumption accounts for 3.8% of annual global mortality worldwide, and the majority of these deaths are due to alcoholic liver disease (ALD), mainly alcoholic cirrhosis. ALD is one of the most common indications for liver transplantation (LT). However, it remains a complicated topic on both medical and ethical grounds, as it is seen by many as a “self-inflicted disease”. One of the strongest ethical arguments against LT for ALD is the probability of relapse. However, ALD remains a common indication for LT worldwide. For a patient to be placed on an LT waiting list, 6 mo of abstinence must have been achieved for most LT centers. However, this “6-mo rule” is an arbitrary threshold and has never been shown to affect survival, sobriety, or other outcomes. Recent studies have shown similar survival rates among individuals who undergo LT for ALD and those who undergo LT for other chronic causes of end-stage liver disease. There are specific factors that should be addressed when evaluating LT patients with ALD because these patients commonly have a high prevalence of multisystem alcohol-related changes. Risk factors for relapse include the presence of anxiety or depressive disorders, short pre-LT duration of sobriety, and lack of social support. Identification of risk factors and strengthening of the social support system may decrease relapse among these patients. Family counseling for LT candidates is highly encouraged to prevent alcohol consumption relapse. Relapse has been associated with unique histopathological changes, graft damage, graft loss, and even decreased survival in some studies. Research has demonstrated the importance of a multidisciplinary evaluation of LT candidates. Complete abstinence should be attempted to overcome addiction issues and to allow spontaneous liver recovery. Abstinence is the cornerstone of ALD therapy. Psychotherapies, including 12-step facilitation therapy, cognitive-behavioral therapy, and motivational enhancement therapy, help support abstinence. Nutritional therapy helps to reverse muscle wasting, weight loss, vitamin deficiencies, and trace element deficiencies associated with ALD. For muscular recovery, supervised physical activity has been shown to lead to a gain in muscle mass and improvement of functional activity. Early LT for acute alcoholic hepatitis has been the subject of recent clinical studies, with encouraging results in highly selected patients. The survival rates after LT for ALD are comparable to those of patients who underwent LT for other indications. Patients that undergo LT for ALD and survive over 5 years have a higher risk of cardiorespiratory disease, cerebrovascular events, and de novo malignancy.

New Concepts on Reversibility and Targeting of Liver Fibrosis; A Review Article

Currently, liver fibrosis and its complications are regarded as critical health problems. With the studies showing the reversible nature of liver fibrogenesis, scientists have focused on understanding the underlying mechanism of this condition in order to develop new therapeutic strategies. Although hepatic stellate cells are known as the primary cells responsible for liver fibrogenesis, studies have shown contributing roles for other cells, pathways, and molecules in the development of fibrosis depending on the etiology of liver fibrosis. Hence, interventions could be directed in the proper way for each type of liver diseases to better address this complication. There are two main approaches in clinical reversion of liver fibrosis; eliminating the underlying insult and targeting the fibrosis process, which have variable clinical importance in the treatment of this disease. In this review, we present recent concepts in molecular pathways of liver fibrosis reversibility and their clinical implications.

Extracorporeal cellular therapy (ELAD) in severe alcoholic hepatitis: A multinational, prospective, controlled, randomized trial

Severe alcoholic hepatitis (sAH) is associated with a poor prognosis. There is no proven effective treatment for sAH, which is why early transplantation has been increasingly discussed. Hepatoblastoma-derived C3A cells express anti-inflammatory proteins and growth factors and were tested in an extracorporeal cellular therapy (ELAD) study to establish their effect on survival for subjects with sAH. Adults with sAH, bilirubin ≥8 mg/dL, Maddrey's discriminant function ≥ 32, and Model for End-Stage Liver Disease (MELD) score ≤ 35 were randomized to receive standard of care (SOC) only or 3-5 days of continuous ELAD treatment plus SOC. After a minimum follow-up of 91 days, overall survival (OS) was assessed by using a Kaplan-Meier survival analysis. A total of 203 subjects were enrolled (96 ELAD and 107 SOC) at 40 sites worldwide. Comparison of baseline characteristics showed no significant differences between groups and within subgroups. There was no significant difference in serious adverse events between the 2 groups. In an analysis of the intent-to-treat population, there was no difference in OS (51.0% versus 49.5%). The study failed its primary and secondary end point in a population with sAH and with a MELD ranging from 18 to 35 and no upper age limit. In the prespecified analysis of subjects with MELD < 28 (n = 120), ELAD was associated with a trend toward higher OS at 91 days (68.6% versus 53.6%; P = .08). Regression analysis identified high creatinine and international normalized ratio, but not bilirubin, as the MELD components predicting negative outcomes with ELAD. A new trial investigating a potential benefit of ELAD in younger subjects with sufficient renal function and less severe coagulopathy has been initiated. Liver Transplantation 24 380-393 2018 AASLD.

Psychiatric comorbidities among patients undergoing liver transplantation in South Korea: a nationwide population-based study

OBJECTIVES

The aim of this study was to analyze the prevalence of mental disorders in patients undergoing liver transplantation (LT) based on claims data from the Health Insurance Review and Assessment Service (HIRA) in South Korea.

METHODS

We confirmed mental disorders in a nationwide cohort of 3758 patients receiving LT between January 2010 and December 2014. We categorized the prevalence of mental disorders based on patient age at the time of LT.

RESULTS

A total of 288 patients for LT were diagnosed with a mental disorder 1 year before their cancer diagnosis. Of those patients, depression was present in 90 (31.25%) and anxiety in 92 (31.9%) patients at the first diagnosis. The overall frequency of mental disorders peaked just before LT, and substance abuse was the most prevalent mental disorder before LT. The risk of mental disorders after LT was significantly lower in those with hepatocellular carcinoma (HCC) than in those without HCC (hazard ratio = 1.70, p < 0.001).

CONCLUSIONS

Mental disorders in patients receiving LT showed different patterns of prevalence depending on age at the time of surgery and the nature of underlying diseases. Personalized intervention based on patient characteristics could improve the quality of life.