Dear colleagues,
With recent dramatic improvements in treating hepatitis C, alcoholic liver disease has now become the leading indication for LT. Determining candidacy for a transplanted liver is a rigorous process and there has always been concern for relapse to alcohol use and its effect on the implanted graft. But, have we been too strict in restricting access in such patients?
Drs. Mitchell Mah’moud and John Aita explore this topic with a concise review of the current literature through an ethical lens. After alcohol, the most commonly used psychotropic drug is marijuana. Marijuana has traditionally been a barrier to candidacy for LT but, as with alcohol, should transplant centers relax this restriction, especially with ongoing legalization across the United States? Dr. Mohamed Shoreibah and colleagues explore this topic though a cogent review of the literature assessing the impact of marijuana use on liver transplant outcomes. We hope these essays will help your medical practice and ongoing advocacy for your patients.
We welcome your thoughts on X at @AGA_GIHN.
Yale University
Dr. Gyanprakash A. Ketwaroo
Gyanprakash A. Ketwaroo, MD, MSc, is associate professor of medicine, Yale University, New Haven, Conn., and chief of endoscopy at West Haven VA Medical Center in Connecticut. He is an associate editor for GI & Hepatology News.
Liver transplantation in the setting of alcohol-related liver disease
BY MITCHELL MAH’MOUD, MD, FACG, AGAF, FAASLD, AND JOHN AITA, MD
Alcohol-related liver disease (ALD), with its subset of severe alcohol-associated hepatitis (SAH), currently accounts for most liver transplantation (LT) recipients in the United States. Patients with SAH, particularly those with a MELD-NA of at least 35, have a 70%-75% mortality rate within 6 months. The ethics of liver transplantation in the setting of SAH are complex and still controversial. With liver transplantation in general, there are more patients with various disorders listed for transplant than available organs. There may also be concern regarding a posttransplant return to harmful alcohol use leading to graft dysfunction or loss. Ultimately, in ethics terms, there is an inherent conflict between the values of beneficence (the obligation to act for an individual patient’s benefit) and justice (fair and equitable treatment of a society).
Duke University
Dr. Mitchell Mah'moud
The past decade has yielded supportive data depicting adequate posttransplant (LT) survival in select SAH patients. Previously, 6 months of alcohol sobriety was typically mandated by LT centers. Reasons for this requirement included (a) documentation of sobriety (including enrollment in an alcohol rehabilitation program) and (b) determination of maximal recovery (such that transplant may not be indicated). Present day information shows poor correlation between the 6-month alcohol sobriety period and reduced posttransplant alcohol use. In particular, the ACCELERATE-AH study, in which patients with severe alcoholic hepatitis underwent LT before 6 months of abstinence, demonstrated post-LT survival rates of 94% at 1 year and 84% at 3 years, similar to post-LT survival rates of other LT recipients. Although other factors may play into a transplant committee’s decision to require a period of sobriety before liver transplant evaluation, these data suggest that a “one size fits all” mandatory sobriety period prior to LT evaluation is now incongruent with normative medical practice.
Cleveland Clinic
Dr. John Aita
One overarching principle of LT is that society provides organs to those patients with the greatest need. An inherent effect of listing select patients with SAH for liver transplant is that it potentially increases the wait time (and therefore the mortality risk) for other liver disease patients. Unfortunately, alcohol use disorder (AUD) has increased significantly in recent years among younger patients (from 2001 to 2013), and some patients may even be at greater risk of ALD (e.g., PNPLA3, TM6SF2, polymorphisms or post gastric bypass) with even mild/moderate use compared to other individuals . LT should not be considered a cure for AUD but rather a treatment for SAH that carries a high mortality rate but comparable post-LT survival to other indications for LT. Data from the ACCELERATE-AH trial revealed a cumulative incidence of any alcohol use at 1 year of approximately 25% and at 3 years of 34% for post-LT patients with SAH. This is roughly equivalent to reported disease recurrence rates of 10%-40% over 1-10 years post-LT for AIH, PBC and PSC and 7%-33% for MASLD. Despite these data, concern for reemergence of metabolic syndrome has never been an impediment when evaluating patients for LT due to end-stage liver disease from MASLD. LT centers may have a selection pathway that permits judicious transplant evaluation for SAH patients who, in the context of beneficence, are felt to greatly benefit from liver transplant in the near term (and are felt unlikely to recover without transplant) while, in the spirit of the ethical tenet of justice, also yield the best suitability for the donated organ (meaning the organ was put to good use with adequate graft survival). In this setting, a liver transplant program may utilize tools such as S-DAT, the PACT scoring system and TERS in identifying candidates with SAH for LT and those who are likely to relapse post-LT.
The optimal role of liver transplant in SAH patients is still emerging, but recent evidence suggests that the post-LT survival rate and alcohol-relapse rate appear to be acceptable. Nonetheless, the need to prevent harmful and sustained alcohol use post LT is vital since it is considered the strongest predictor of graft loss and death. Recent observations have also highlighted younger age and consumption of >10 drinks/day within 6 months of LT as predictors of sustained alcohol use post-LT. Hence, early identification of sustained alcohol use post-LT coupled with timely interventions based on abstinence-promoting behavioral and pharmacologic therapy should remain the goal of all transplant centers to avoid relapse and alcohol related deaths. In addition, incorporating addiction treatment centers into post-LT management should be considered standard of care to provide continued therapy for AUD in all patients post-LT. As in the DAA era of hepatitis C therapies, the role of LT in the setting of SAH may dwindle as emerging SAH-specific therapies evolve resulting in adequate transplant-free survival. Until then, it is beneficial to refine the guidelines periodically across all the UNOS regions on patient selection for LT in SAH, consistent with ethical principles of beneficence and justice. Finally, despite the concern about return to harmful drinking post LT, the need to destigmatize AUD and explain the purpose of LT for SAH through public education is vital.
Dr. Mah’moud is professor of medicine in the division of gastroenterology at Duke University School of Medicine, Durham, N.C., and a gastroenterologist with RMG Gastroenterology in North Carolina. Dr. Aita is gastroenterologist with Cleveland Clinic Indian River Hospital in Vero Beach, Fla. Dr. Mah’moud disclosed serving on the advisory board of CLDF, and receiving research support from Intercept Pharma and Gilead Scientific, but not in a capacity related to this article.
References
Tapper E. BMJ. 2018;362: k2817
Louvet A. Lancet Gastro Hep. 2022;7(5):416-25
Lee B. Gastroenterology. 2018;155:422-30
Shroff H. Hot Topics in Hepatology: Chicago ALF Debate. Clinical Liver Disease (2020 vol 16, No.5: 178-85)
