Liquid biopsy - Ronny Allan - Living with Neuroendocrine Cancer

Tag: Liquid biopsy

A test done on a sample of blood to look for cancer cells from a tumor that are circulating in the blood or for pieces of DNA from tumor cells that are in the blood. A liquid biopsy may be used to help find cancer at an early stage. It may also be used to help plan treatment or to find out how well treatment is working or if cancer has come back. Being able to take multiple samples of blood over time may also help doctors understand what kind of molecular changes are taking place in a tumor.

11Jul 2020 by Ronny Allan 5 Comments

The NETest® – a Chromogranin A replacement and more?

A Spotlight on NENs - Testing Series, Clinical Trials and Research, Patient Advocacy

Update 20th Aug 2023.NEW YORK – Wren Laboratories announced Thursday that it finalized a distribution agreement with Kindstar Globalgene Technology to distribute Wren's blood-based neuroendocrine tumor NETest throughout China. Click the link below. https://wrenlaboratories.com/netest-expanded-to-china/Tumour Markers GeneralFor some years the gold standard tumour marker for Neuroendocrine Neoplasms (NENs) has been and remains today, Chromogranin A (and for certain scenarios Chromogranin B and C can provide some additional clues). Pancreastatin, which is actually a molecule of Chromogranin A, is another marker touted but appears to be limited to USA. Its main advantage is the ability to better handle the effects of Proton Pump Inhibitor (PPI) use which is prevalent in the general population. As we move to a new era of molecular/genetic tumour markers, there's a danger that NENs will be left behind,…

18Jul 2019 by Ronny Allan 5 Comments

Pancreatic Neuroendocrine Tumours – to cut or not to cut

Treatment

Background I've written before about pancreatic NETs (pNETs), much of which has been on the awareness side of my advocacy work, particularly emphasising the differences with core Pancreatic Cancer (adenocarcinoma).Pancreatic NETs are quite difficult to diagnose and treat, some of that difficulty is due to the location of the pancreas and accessibility for surgeons and radiographers. It's not helped by the fact that most pNETs are non-functional, making diagnosis more difficult as there is little clinical suspicion to scan, but also results in more late diagnoses.Although biopsies are possible, mainly via endoscopic ultrasound or laparoscopy, they can still be difficult to reach. In some cases, biopsies are not done until after the surgical removal of tumours. The latter scenario plus surgery after a positive biopsy result does present an increased risk…