Biopsy-based molecular diagnostics holds promise to increase diagnostic precision. In this issue of Kidney International, Beadle et al. describe a molecular classifier derived from the Banff Human Organ Transplant panel. This new molecular test specifically identifies biopsies associated with higher risk for allograft failure showing microvascular inflammation, but not considered diagnostic for antibody-mediated rejection by current Banff rules. This study marks a milestone toward defining a valuable context for use for biopsy-based molecular transplant diagnostics.
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