Liver Transplant Age Limits: Biological Age Over Chronological Age

There is no absolute upper age limit for liver transplantation. Eligibility is determined by physiologic age, comorbidity burden, frailty, and survival benefit—not a number.

Current Practice

• Many centers transplant into 70s (select 75+); oldest recipients in 80s (rare, exceptional).
• Pediatric: No lower limit; neonates transplanted for biliary atresia, metabolic disease.
• MELD-Na score (waitlist priority) does not include age; post-transplant survival models (SOFT, BAR, etc.) incorporate age as continuous variable.

Key Assessment Domains

• Frailty: Liver Frailty Index (grip, chair stands, balance); predicts waitlist mortality, post-transplant LOS, delirium.
• Cardiopulmonary reserve: CPET (VO₂ max), echo, coronary anatomy (cath if high risk).
• Cognitive/functional status: MoCA, ADL/IADL independence.
• Social support: Caregiver network for complex post-op regimen.
• Malnutrition/sarcopenia: CT psoas area, mid-arm circumference.

Age-Specific Considerations

• Older adults: Higher infection, renal dysfunction, delirium risk; but similar 1- and 5-year survival if selected well. Benefit: quality of life, independence.
• Young adults: Adherence, psychosocial maturity, reproductive counseling, long-term immunosuppression toxicity (CNI nephrotoxicity, malignancy).
• Pediatrics: Growth, development, transition to adult care.

Ethical Allocation

Utility (life-years gained) vs. justice (access). UNOS/OPTN uses MELD-Na (sickest first) without age cap. Some advocate “life-years from transplant” (LYFT) metric.

Chronological age is a proxy, not a predicate. Comprehensive geriatric assessment enables equitable access for biologically fit older candidates.