katero
Jun 30, 2026

Pancreatic cancer breakthrough as doctors develop new blood test

Patients who have been treated for pancreatic cancer could benefit from a newly developed blood test that could identify tiny traces of the disease often missed by scans. 

The highly sensitive test has been developed by a team based at Northwestern Medicine in Chicago who followed 106 pancreatic cancer patients from initial diagnosis through chemotherapy and surgery. 

The new highly sensitive blood test - digital droplet PCR (ddPCR) - detected signs of cancer in nearly four times as many patients as conventional next-generation sequencing tests (NGS), which are more commonly used.

Both types of test search for traces of DNA shed by cancer cells into the bloodstream which can act as an early warning sign that cancer is present or may return. 

The new test looks solely for the presence of KRAS, a genetic mutation that drives more than 90 per cent of pancreatic cancers.

The study, published in Clinical Cancer Research, found that even after chemotherapy and surgery, ddPCR continued detecting cancer in most patients, while NGS and standard testing didn’t.

It means that it could potentially help specialists identify patients whose disease is more likely to return - even when scans and other measuring tools appear reassuring. 

When it comes to pancreatic cancer, early detection is key - both when it is first diagnosed and when seeing if it has metastasised elsewhere in the body. 

Around 11,500 people are diagnosed with pancreatic cancer in the UK each year

Around 11,500 people are diagnosed with pancreatic cancer in the UK each year

Around 11,500 people are diagnosed with pancreatic cancer in the UK each year, between 10 and 20 per cent of whom are stage two, but the disease is notoriously difficult both to diagnose and treat. 

Common symptoms of the incurable cancer - dubbed the 'silent killer' - include jaundice (when the skin and eyes take on a yellowish tinge), reduced appetite, weight loss, fatigue, a high temperature, feeling or being sick, diarrhoea and constipation. 

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