Gilead Sciences IncĀ is stopping its Phase 2 clinical study of the investigational monoclonal antibody simtuzumab among patients with idiopathic pulmonary fibrosis (IPF).

This decision follows an analysis of unblinded efficacy and safety data by the study’s Data Monitoring Committee (DMC), which recommended that the study be terminated early due to lack of efficacy.

Gilead has also reviewed the data and determined the study has not shown evidence of a treatment benefit in the group of patients randomized to receive simtuzumab.

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