# Advancements in multi-cancer blood test detection

> Live situation record from CLSTR: https://clstr.news/situations/advancements-in-multi-cancer-blood-test-detection
> Updated: 2026-10-15T18:30:00.000Z. Sources: 4. Developments: 2.

Recent medical research and clinical developments have focused on improving early cancer detection through liquid biopsy technology. 

A large-scale study known as PATHFINDER 2, published in Nature Medicine, demonstrated that a multi-cancer early detection (MCED) blood test can identify signals for 17 different cancer types. Analyzing DNA fragments in the bloodstream of over 32,000 participants, the study reported a specificity of 99.64% and a positive predictive value of 60.3%. Notably, 70.9% of confirmed cases were identified at stage 3 or earlier, and many detected cancers belonged to categories without current high-priority screening recommendations.

Building on the potential for blood-based screening, researchers at the USC Norris Comprehensive Cancer Center have launched a clinical trial for a specific liquid biopsy designed to detect breast cancer. This test aims to identify rare cancer-associated cells and tumor-associated large extracellular vesicles in the bloodstream to complement traditional mammography, potentially reducing patient anxiety and improving access for remote populations.

## Timeline

### 2026-10-15: USC researchers launch clinical trial for early breast cancer blood test

USC researchers have launched a clinical trial for a new blood test that detects rare cancer-associated cells to identify early-stage breast cancer alongside traditional mammography.

2 sources. https://clstr.news/cluster/usc-researchers-launch-clinical-trial-for-early-breast-cancer-blood-test

### 2026-09-24: Blood test study detects signals for 17 different cancer types

A study in Nature Medicine shows a new blood test can detect 17 types of cancer, often identifying them at early stages, including types without current standard screening protocols.

2 sources. https://clstr.news/cluster/blood-test-study-detects-signals-for-17-different-cancer-types

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Cite as: Advancements in multi-cancer blood test detection. CLSTR, https://clstr.news/situations/advancements-in-multi-cancer-blood-test-detection