Implications of the Composite Allocation Score System for Lung Transplantation in the United States: Review of the New System

Semin Thorac Cardiovasc Surg. 2025;37(3):329-333. doi: 10.1053/j.semtcvs.2024.09.001. Epub 2024 Sep 23.

Abstract

Due to criticism regarding undue adherence to fixed geographic boundaries, the Lung Allocation Score system was recently replaced by the more holistic allocation via continuous distribution. This review highlights the historical evolution of US lung allocation paradigms, outlines rationale for continuous distribution under the Composite Allocation Score system and discusses expected implications of this new system.

Keywords: lung transplantation; organ allocation; transplantation.

Publication types

  • Review

MeSH terms

  • Decision Support Techniques*
  • Health Care Rationing*
  • Humans
  • Lung Transplantation* / adverse effects
  • Patient Selection*
  • Risk Assessment
  • Risk Factors
  • Time Factors
  • Tissue and Organ Procurement* / organization & administration
  • Treatment Outcome
  • United States
  • Waiting Lists*