Thermo Fisher Scientific introduces new Molecular Microscope Diagnostic System to aid in evaluation of lung transplant rejection

Oct. 8, 2025

Thermo Fisher Scientific has introduced a new laboratory developed test for post-transplant biopsy assessment designed to improve the detection of lung transplant rejection and injury, delivering quantifiable results that may increase diagnostic confidence and guide timely treatment. 

Thermo Fisher’s new Molecular Microscope Diagnostic System for Lung (MMDx Lung) leverages the power of machine learning to profile gene expression data from lung biopsies, comparing each new sample to a reference set of over 896 lung biopsies. The system assesses the probability of rejection and provides molecular scores associated with injury, graft dysfunction and rejection. The results may aid in a pathologist’s assessment, with the aim of enabling greater confidence in the diagnosis and treatment of a lung transplant recipient. 

In the United States, MMDx Lung is delivered through a collaboration with Kashi Clinical Laboratories.

Read Thermo Fisher Scientific's announcement on Businesswire

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