Employment of the Envisia Genomic Classifier in Conjunction with Cryobiopsy in Patient with Undiagnosed Interstitial Lung Disease

Retrospective analysis of patients in a multi-center study assessing change in management strategy following Envisia and cryobiopsy and the association between Envisia UIP classification and disease progression. Results showed combining Envisia with Cryobiopsy demonstrated meaningful impact on therapeutic strategy for ILD patients. Envisia positive patients who were not prescribed antifibrotics were twice as likely to progress compared to Envisia negative patients.

Inter-reader Variability Between Two Expert Thoracic Radiologists in the Interpretation of HRCT Findings in Patients With Interstitial Lung Disease

HRCTs were independently read by two expert thoracic radiologists in the BRAVE study in 74 patient ILD cases. Inter-reader variability was notable when interpreting HRCT findings. This data highlights the need for multi-disciplinary approaches and additional testing modalities, such as a genomic classifier or histopathology, to establish a confident clinical diagnosis in these patients rather than relying on HRCT alone.

Impact of Genomic Classifier in Patients with Undiagnosed ILD

In an independent, multi-center study, researchers retrospectively analyzed data for 98 patients with ILD that underwent a clinically indicated bronchoscopy with cryobiopsy and the Envisia Genomic Classifier to assess change in management. The authors concluded that adding Envisia to cryobiopsy demonstrated a meaningful impact on therapeutic intervention with a 76% change in management strategy with more patients being started on antifibrotic therapy following a positive Envisia result.

A positive Envisia Genomic Classifier result may predict clinical progression in fibrotic interstitial lung disease 

The Envisia classifier positive result may serve as a biomarker for FVC by identifying the genomic signature of UIP in patients without definite UIP on CT.  Results for the study showed that patients with an Envisia positive result show a greater decline in FVC over time compared to Envisia negative patients​. The Envisia classifier could have utility in identifying patients with IPF and non-IPF progressive pulmonary fibrosis and underlying UIP earlier in their disease, allowing for aggressive therapy before significant, irreversible FVC loss.