This calculator applies the ISHLT GAP coding system for pulmonary antibody-mediated rejection (AMR), based on the 2026 ISHLT Scientific Statement by Calabrese, Levine, Hachem et al.
This is a coding aid, not a clinical decision tool. It does not replace multidisciplinary assessment and should not be the sole basis for any clinical decision.
Data collection: Each time you generate a GAP code, anonymous data are sent to a research registry. This includes the values you entered (G, A, P and non-core elements) and the resulting code. No patient identifiers are collected or transmitted.
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GAP AMR Calculator
Coding tool for the 2026 ISHLT Scientific Statement on pulmonary AMR