DIAGNOSTICS
FDA approves updated colon cancer test from Exact Sciences
Cologuard Plus, the colon cancer screen made by Exact Sciences, has won FDA approval. The stool-based test, approved for people age 45 and older, detects 95% of cancers and has 30% fewer false positives than its prior iteration, which means fewer unnecessary colonoscopies. The test was validated in a study of more than 20,000 volunteers who were aged 40 and older.
If the U.S. Preventive Services Task Force lowered the screening age to 40, analysts believe this could mean an additional $3 billion market opportunity, STAT's Jonathon Wosen writes. The first Cologuard test was approved in 2014, and was 92% accurate and 87% specific.
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VACCINES
Rwanda's rapid response to Marburg outbreak
A clinical trial of an experimental vaccine against Marburg virus has begun in Rwanda, where an outbreak has led to 49 cases of the hemorrhagic fever and 12 deaths. Most of these cases are among health care workers. The U.S. government is supplying a single-dose vaccine developed by the Sabin Vaccine Institute, which is in Phase 2 trials in Uganda and Kenya.
Rwanda is also beginning clinical trials for therapeutics meant to treat the disease, testing Gilead's antiviral drug remdesivir, and Mapp Biopharmaceutical's monoclonal antibody MBP-091. The fast response is thanks to advanced planning by Rwanda's government, as well as prep work conducted by the WHO and other global health partners.
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