Ga68-DOTATATE - Ronny Allan - Living with Neuroendocrine Cancer

Tag: Ga68-DOTATATE

Gallium-68 DOTATATE (or Ga-68 DOTATATE) is a PET radiotracer that is useful for evaluating primary and metastatic well-differentiated neuroendocrine tumours. It is a form of somatostatin-receptor (SSTR) functional imaging and most often combined with cross-sectional imaging in the form of PET-CT.

Ga-68 DOTATATE has shown improved accuracy for detection relative to indium-111 pentetreotide SPECT-CT ¹. It binds SSTR subtype 2 and binds 100 times more avidly than indium-111 pentetreotide ².

There are other forms:

DOTATOC: DOTA-d-Phe1-Tyr3-octreotide
DOTANOC: DOTA-1-Nal3-octreotide

These have an affinity for different somatostatin receptors, SSTR subtypes 3 and 5 and SSTR subtype 5, respectively

30Apr 2021 by Ronny Allan 1 Comment

Dual Tracer (68Ga-DOTATATE and 18F-FDG) PET Imaging in G2 & G3 Gastroenteropancreatic Neuroendocrine Tumours

Clinical Trials and Research

For some time now, I've been watching the development of PET scans for Neuroendocrine Neoplasms (NENs). I use the term 'Neoplasms' because there are different strategies for well and poorly differentiated types, Neuroendocrine Tumour (NET) and Neuroendocrine Carcinoma (NEC) respectively.It's known that most NETs have somatostatin receptors which makes tumours be seen better on somatostatin receptor-based imaging e.g. 68Ga-DOTATATE or 64Cu DOTATATE, but more aggressive types tend not to have working somatostatin receptors and are better seen on regular PET, i.e. 18F-FDG PET/CT. However, nothing in NENs is simple and there's always outliers. This has been highlighted since the addition of a Grade 3 Well Differentiated NET into the equation.The variable clinical outcome of patients with G2 & G3 well diff Gastroenteropancreatic Neuroendocrine Tumours (GEP NETs) makes the selection of…

28Jun 2020 by Ronny Allan No Comments

SSTR PET – Ga68-DOTA-JR11 vs Ga68-DOTATATE

Clinical Trials and Research

Share on facebook Facebook Share on twitter Twitter Share on pinterest Pinterest Share on whatsapp WhatsApp Share on email Email Headline - 68Ga-DOTA-JR11 was found to detect significantly more liver lesions than 68Ga-DOTATATE; however, 68Ga-DOTATATE detected more bone lesions than 68Ga-DOTA-JR11.Although it had been in trial use for some years in Europe and elsewhere, the formal approval of 68Ga-DOTATATE has led to an increase in the development of other radionuclides, some in conjunction with therapeutic options (i.e. PRRT) making a 'theranostic' approach to diagnosing, treating and surveillance Neuroendocrine Cancer patients with somatostatin receptor positive tumours. I also wrote last year about another option called 64Cu, something already available in Europe, in particular Denmark.In another development which has been running for some time, a Ga68 variant called 68Ga-DOTA-JR11 has been in trial…

21Feb 2017 by Ronny Allan No Comments

Recent Progress in NET Management – Positive presentation from Jonathan R Strosberg MD

Awareness, Living with Neuroendocrine Cancer, Patient Advocacy, Treatment

I recently wrote a blog called Neuroendocrine Cancer – Exciting Times Ahead! I wrote that on a day I was feeling particularly positive and at the time, I wanted to share that positivity with you. I genuinely believe there's a lot of great things happening. Don't get me wrong, there's a lot still to be done, particularly in the area of diagnosis and quality of life after being diagnosed. However, this is a really great message from a well-known NET expert. In an interview with OncLive, Jonathan R. Strosberg, MD, associate professor at the H. Lee Moffitt Cancer Center in Florida, discussed his presentation on NETs at a recent 2016 Symposium, and shed light on the progress that has been made in this treatment landscape. OncLive: Please highlight some of the main points from your…