Management of Severe Alcohol Associated Hepatitis

Management of Severe Alcohol-Associated Hepatitis

Comprehensive Lecture Summary — Prof. Shiv Kumar Sarin, ILBS

1. Main Clinical Topics Discussed

• Epidemiology of alcohol-associated liver disease (ALD) in India
• Risk stratification and severity scoring in alcohol-associated hepatitis (AAH)
• Pathogenesis of hepatocellular injury in AAH
• Nutritional management
• Corticosteroid therapy: indications, limitations, and response assessment
• Metabolic risk modifiers and genetic predisposition (MetALD)

2. Key Learning Points, Guidelines, and Recommendations

Epidemiology

• Alcohol is now the #1 cause of liver disease admissions at ILBS
• ALD accounts for 48% of cirrhosis admissions at ILBS (up from 44% in 2015; previously Hepatitis B predominated)
• India's alcohol consumption approaching 6.2 billion liters annually
• ILBS manages ~7,000 cirrhosis patients/year and ~115,000 new liver disease patients/year

Metabolic Risk Amplification (MetALD)

• Patients with metabolic traits (personal or family history of diabetes) + alcohol consumption face:

- 3.3× higher risk of early-onset cirrhosis (age 30–35)

- 13× higher risk of progression to cirrhosis

- Disease occurring with 4.6× shorter duration of alcohol use

• Polygenic risk scores (PNPLA3, PCSK variants) compound risk:

- Heavy binge alone: 3.5× baseline risk

- Polygenic risk score: 4×

- Diabetes + drinking: 2.5×

- All factors combined: ~7× baseline risk

• PNPLA3 heterozygosity present in ~20% of Indian population; homozygosity in 7–10%

Severity Assessment Scores

• MELD >20: ~20% 90-day mortality
• Maddrey's Discriminant Function (MDF): DF = 4.6 × (PT patient − PT control) + bilirubin; threshold ≥32 indicates severe disease
• Lille Score: Used to assess steroid non-response (incorporates bilirubin, PT/INR, creatinine, age, albumin, Day 0–7 bilirubin change)
• CANONIC/AARC Score (preferred in AAH + ACLF): Uses bilirubin, INR, lactate, creatinine

- AARC score ≥10 vs. ≥11 predicts significantly different outcomes

- Score of 10 in the presented case (bilirubin: 3 pts, grade 2 encephalopathy: 2 pts, INR 2.2: 2 pts, lactate: 2 pts, creatinine normal: 1 pt)

• Standard scores (MELD, Lille, MDF) are insufficient when AAH is complicated by ACLF

Pathogenesis Highlights

• Gut-derived LPS and bacterial translocation → hepatic macrophage activation → TNF-α, IL-1, ROS release
• Neutrophil activation by oxidized albumin (HNA1/HNA2) → oxidative stress; neutrophilic infiltrate on biopsy is not a favorable sign
• Hyperoxidized albumin (non-mercaptalbumin type 2 >12%) correlates with high mortality; activates pro-inflammatory, pro-thrombotic platelets → caution with albumin infusion in these patients
• Increased circulating lipid droplets stimulate macrophages via PAI-1 pathway — emerging therapeutic target
• Mallory-Denk bodies act as neoantigens perpetuating immune-mediated hepatic injury

Nutritional Management

• 35–40 kcal/kg/day (approximately 2,600–3,000 kcal/day)
• Protein: 1.5 g/kg/day; Fat: 30–35%