Somatostatin receptors (SSTR) - Ronny Allan - Living with Neuroendocrine Cancer

10May 2023 by Ronny Allan No Comments

Clinical Trial: Novel Somatostatin Receptor Subtype 2 Antagonist Labelled With Terbium-161 (161Tb-DOTA-LM3) (Beta plus)

A new clinical trial post.What is Terbium-161 (161Tb-DOTA-LM3) (Beta plus).Terbium-161 is a radioactive substance. DOTA-LM3 is a novel somatostatin antagonist targeted using somatostatin receptor number 2 (SSTR2). Combined they form a radioligand for use in Pepetide Receptor Radionuclide Therapy (PRRT). It's a beta emitter but labelled 'plus' on the basis it offers more than the currently approved Luthera product (lutetium 177 or 177Lu Dotaxxx series). There is evidence that terbium-161 (161Tb) is more powerful than 177Lu, not only in combination with SST2 agonists but particularly with SST2 antagonists.Agonist vs Antagonist in the context of PRRTThe currently approved Luthera product (lutetium 177 or 177Lu Dotaxxx series) are SST2 agonists. SST2 antagonists are more efficient because they can access more binding sites on the cell surface, resulting in higher tumour uptake and…

24Mar 2023 by Ronny Allan No Comments

Nuclidium wins award to study NET radiopharmaceutical – Phase 1 Clinical Trial of TraceNET (TM)

Clinical Trials and Research

What is TraceNETTM TraceNETTM is a a novel copper-based 'radiodiagnostic' for detecting neuroendocrine tumours (NET). The PET imaging agent candidate is the diagnostic component of NUCLIDIUM’s theranostic program, which comprises a true theranostic pair for diagnosing and treating NET patients, leveraging the company’s unique copper-based approach. The Phase 1 program for the diagnostic is the first step in its clinical development and is planned to commence in the first half of 2023. Nuclidium’s TraceNETTM program aims to overcome key limitations of existing radiodiagnostics and their corresponding therapeutics by increasing the sensitivity and diagnostic accuracy of NET imaging, including detecting metastases, while reducing the radiation burden for the patient. The TraceNETTM diagnostic consists of an imaging radioisotope (61Cu) and a somatostatin receptor (SSTR) antagonist-targeting molecule that binds with high affinity and specificity to…

03Jan 2023 by Ronny Allan 2 Comments

RonnyAllan.NET – a review of 2022

Awareness, Clinical Trials and Research, Diet and Nutrition, Inspiration, Living with Neuroendocrine Cancer, Newsletters, Patient Advocacy, Survivorship, Travel with Ronny, Treatment

ReviewIn 2022, my pet project (my blog) hit 2 million views in early November – that was a major boost. It takes 3-4 years to get a million hits based on current performance. To be honest, I’m still flabbergasted by reaching one million in 2018. It just kinda happened! I am grateful for every single view. 2022 was a challenging year, mainly because the pandemic had some latent impact on my social media activity and also in terms of growth. 2020 and 2021 were slower than normal but 2022 has seen some pickup. Some of it is due to less writing but much is due to a change in Facebook algorithms which affected many ‘pages’ reducing their scope (the more cynical might say it was done to drive advertising revenue but …….). 2022…

05Nov 2022 by Ronny Allan No Comments

Incidental Findings in Somatostatin Receptor PET (SSTR PET) scans (e.g. Ga68/Cu64)

Living with Neuroendocrine Cancer, Patient Advocacy, Survivorship, Treatment

Incidental Findings in SSTR PETSomatostatin Receptor (SSTR) PET scans (e.g. Ga68/Cu64) have transformed the imaging landscape for Neuroendocrine Cancer, mainly for well-differentiated NETs, most of which will be somatostatin receptor positive. However, Oncologists/NET Specialists and radiologists must be aware of the various physiologic and other pathologic processes in which cellular expression of SSTR can result in interpretative error. Included in these pitfalls are incidental findings. What is an incidental finding? An incidental finding, also known as an incidentaloma, may be defined as “an incidentally discovered mass or lesion, detected by CT, MRI, or other imaging modality (e.g. PET) performed for an unrelated reason.” An increase in the utilisation of imaging examinations over the past three decades has led to a marked increase in the number of findings detected that are unrelated to the…

19Oct 2022 by Ronny Allan 3 Comments

Understanding your Somatostatin Receptor (SSTR) PET Results

Patient Advocacy

Background In my online patient group, there is constant discussion about the meaning of both pictures and words on scan reports. The one that seems to cause the most confusion is PET scans, mainly somatostatin receptor (SSTR) PETs such as Ga68 and Cu64 variants. Worth adding that it's the addition of a nuclear tracer that makes PETs seem different. Generally speaking, the PET hardware is essentially the same. Most have a built-in CT scan, much less frequently an MRI scan. Confusion is often triggered by healthcare system processes where the patient receives the report before the appointment to discuss the results with the referring physician. Cue anxiety because the average patient reader does not understand and certain words cause them to worry, often unnecessary worry. The patient then becomes impatient…

03Oct 2022 by Ronny Allan 2 Comments

Neuroendocrine Cancer: Glossary of Terms

Awareness, Clinical Trials and Research, Diet and Nutrition, Living with Neuroendocrine Cancer, Patient Advocacy, Survivorship, Treatment

Welcome to my Neuroendocrine Cancer Glossary of Terms list providing a source of meanings for acronyms and medical terms, all sourced from top Neuroendocrine Cancer and general cancer sites. How to use this list: 1. If your term begins with an A, click on A to find all terms beginning with A. Select your term from the list. 2. For numerical terms, please click on the hashtag (#) symbol in the A-to-Z strip. 3. The term definition including acronym or abbreviation will be given in full along with any of my published articles containing that term as long as I have tagged it on my website to display in the list. Please note I'm constantly working on the repository to clean up all definitions, adding and removing links where necessary,…

09Jan 2022 by Ronny Allan No Comments

Clinical Trial: Lutathera and ASTX727 in Neuroendocrine Tumours (LANTana)

Clinical Trials and Research, Patient Advocacy, Treatment

What is the aim of this clinical trial?The aim of this single location trial in Imperial College London is to determine whether pre-treatment with ASTX727 results in re-expression of SSTR2 in patients with metastatic NETs, using 68Ga-DOTA-TATE to image epigenetic modification of the SSTR2 locus allowing subsequent treatment with Lutathera(i.e. PRRT). Patients entered into the study will receive ASTX727 orally up to 3 to 8 days prior to receiving Lutathera treatment. What is ASTX727?Oral Decitabine and Cedazuridine (ASTX727) is a DNA methyltransferase (DNMT) inhibitor currently being used in a trial to facilitate oral treatment of certain drugs for adults with intermediate and high-risk myelodysplastic syndromes (MDS) including chronic myelomonocytic leukemia (CMML).This is extremely technical, but from a study conducted by scientists at Imperial College London, they acknowledged that significant number of…

13Nov 2021 by Ronny Allan 6 Comments

A Trial to Assess Efficacy and Safety of Octreotide Subcutaneous Depot (CAM2029) in Patients With GEP-NET (SORENTO)

Clinical Trials and Research, Treatment

Some of the key differences between Lanreotide and Octreotide long-acting are:1. Octreotide long-acting needs constituting prior to administration - Lanreotide comes prefilled. 2. Octreotide long-acting is administered intra-muscular, Lanreotide is deep subcutaneous. 3. I probably should add Octreotide LAR cannot be self-injected but Lanreotide can. I suspect this type of delivery system may open up that possibility for Octreotide LAR. So, this clinical trial caught my eye. A version of octreotide long-acting which is prefilled and given subcutaneously. Plus, the manufacturers say it has a much higher bioavailability than the standard product Sandostatin LAR (bioavailability is the proportion of a drug or other substance which enters the circulation when introduced into the body and so is able to have an active effect).CAM2029 might therefore be considered a generic of Sandostatin LAR but better…

18Sep 2021 by Ronny Allan No Comments

New Clinical Trial – Testing Lutetium Lu 177 Dotatate in Patients With Somatostatin Receptor Positive Advanced Bronchial Neuroendocrine Tumors

Clinical Trials and Research

When I see a trial for Gastroenteropancreatic NETs (GEPNETs), I know that BP (Bronchopulmonary) NETs (includes Lung) are not included. When you look at the approval wording for the major treatments in use (PRRT Lutathera, Lanreotide), they appear to use the term GEPNETs making BP NETs the poor relative. Clearly there’s highly complex reasons why NETs react differently in different parts of the body. I can see that BP NET patients were involved in clinical trials for both of the mainstream treatments listed above. The drug approval process is also highly complex, and I can see from the wording that functional BP NETs with carcinoid syndrome can qualify at least for somatostatin analogues (Lanreotide and Octreotide). That is not to say BP NET patients cannot get access to these treatments, I…

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…

22Apr 2021 by Ronny Allan 10 Comments

Generic Somatostatin Analogues for Neuroendocrine Cancer

Treatment

Generic Somatostatin Analogues. I've covered a lot about somatostatin analogues, particularly the two predominant approved drugs Lanreotide and Octreotide. Recently I read about generic drugs and found there are some for octreotide and as of Jul 2021, at least one for Lanreotide. I was concerned to hear a patient asking a question about generic drugs in my private Facebook group with the main concern being they could be of lesser quality. I studied that in more detail and here are the results of my research. What are generic drugs? Primer Companies take out exclusive rights called patents on each new drug they discover. If a company has a patent on a drug, only that company can market it under their brand name once it's been granted a licence. Once the patent expires,…

15Apr 2021 by Ronny Allan No Comments

A Diagnostic Imaging Study of 64Cu-SARTATE™ for Neuroendocrine Tumours

Clinical Trials and Research

Share on facebook Facebook Share on twitter Twitter Share on pinterest Pinterest Share on whatsapp WhatsApp Share on email Email We probably should start to use the term "Somatostatin Receptor PET" (SSTR PET) a bit more. We got used to using the term Ga68 PET but since then we have an approved copper version known as 64Cu Dotatate (commercial brand name in US DETECTNET™). Now we have another in the clinical trial pipeline and will add others as they come onto my radar.Ga68 Dotatate/TOC/NOC - click hereCu64 Dotatate (DetectNET) - click hereA Diagnostic Imaging Study of 64Cu-SARTATE™ Using Positron Emission Tomography (PET) on Patients With Known or Suspected NETsReference: NCT04438304Trial status: RecruitingThe purpose of this study is to assess the performance of imaging agent 64Cu-SARTATE in participants with known or suspected Gastroenteropancreatic…

07Mar 2021 by Ronny Allan No Comments

Treatment for Neuroendocrine Cancer – a summary for patients

Treatment

ScopeThis summary provides an overview of the types of therapy known for treating Neuroendocrine Cancer. They will have been approved at least by one national or regional approval agency, may not be available or approved in your own country; and may appear in clinical guidelines for the treatment of Neuroendocrine Cancer.Clinical trials will not be covered, although it's noted that some of the approved treatments listed may be in follow on trials either to prove new coverage or used in combination with another drug. For a list of clinical trials covered by the author, click here. This summary will not include complementary or alternative treatment but may cover or overlap with experimental treatment. Who recommends the best treatment for my condition? Different types of doctors often work together to create a…

21Dec 2020 by Ronny Allan 2 Comments

Somatostatin Receptor Positive Advanced Bronchial Neuroendocrine Tumors – PRRT vs Everolimus

Clinical Trials and Research

When I see a trial for Gastroenteropancreatic NETs (GEPNETs), I know that BP (Bronchopulmonary) NETs (includes Lung) are not included. When you look at the approval wording for the major treatments in use (PRRT Lutathera, Lanreotide), they appear to use the term GEPNETs making BP NETs the poor relative. Clearly there's highly complex reasons why NETs react differently in different parts of the body. I can see that BP NET patients were involved in clinical trials for both of the mainstream treatments listed above. The drug approval process is also highly complex, and I can see from the wording that functional BP NETs with carcinoid syndrome can qualify at least for somatostatin analogues (Lanreotide and Octreotide). That is not to say BP NET patients cannot get access to these treatments,…

15Dec 2020 by Ronny Allan No Comments

Neuroendocrine Tumours – now you see them, now you don’t!

Treatment

In my post entitled "If you can see it, you can detect it", I listed the different types of scanning techniques and technology to find evidence of disease in Neuroendocrine Tumours (NETs). Of course, while scans, blood and (current) marker tests can give some pretty big and important clues, "tissue is the issue" to determine type.Even after formal diagnosis, seeing all the tumours can be a challenge with NETs. In the article I quoted above, I indicated that scans for NETs can be analogous to picking 'horses for courses'. For example, most NETs have somatostatin receptors and can often be seen better on functional scans e.g. somatostatin receptor scintigraphy (SRS) or somatostatin receptor PET (SSTR-PET), combined with the use of radionuclides designed specifically for this purpose e.g. In 111, Tc99m,…

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…

25Feb 2020 by Ronny Allan 1 Comment

Clinical Trial: Lu-177 DOTATOC (PRRT) in adult subjects with Somatostatin receptor (SSTR) positive Pulmonary, Pheochromocytoma, Paraganglioma, Unknown primary, and Thymic Neuroendocrine Tumors

Clinical Trials and Research

Excellent news for those who don't have Gastroenteropancreatic NETs (GEP-NETs). A trial of PRRT is being set-up for the less common types of NET including those with an unknown primary. Using the DOTATOC radionuclide rather than the Lutathera model of using DOTATATE, this trial will cater for Pulmonary, Pheochromoctyoma, Paraganlioma, Unknown Primary and Thymic Neuroendocrine Tumours.Excel Diagnostics and Nuclear Oncology Center (EDNOC) announced today that its physician sponsored Investigational New Drug (IND) application to evaluate safety and efficacy of Lu-177 DOTATOC in adult subjects with Somatostatin receptor (SSTR) expressing Pulmonary, Pheochromocytoma, Paraganglioma, Unknown primary, and Thymic Neuroendocrine Tumors (PUT-NET), has received approval to proceed by USA Food and Drug Administration (FDA) and also charge authorization has been granted (IND#143631, NCT04276597). This IND is anticipated to start enrolling patients by early…

24Sep 2019 by Ronny Allan 1 Comment

Clinical Trials – PEN-221 for Neuroendocrine Cancer

Clinical Trials and Research

What is PEN-221?Tarveda Therapeutics is discovering and developing a new class of potent and selective precision oncology medicines for the treatment of patients with various solid tumor malignancies. Their strategy includes developing their own proprietary Pentarin miniature conjugates to enhance the effectiveness of promising anti-cancer payloads that have struggled without their selective targeting to solid tumors. These medicines are known as 'Pentarins'. PEN-221 is the lead candidate 'Pentarin' aimed at Neuroendocrine Cancer - PEN-221.Somatostatin receptor 2 (SSTR2) is frequently overexpressed on several types of solid tumors, including neuroendocrine tumors and small-cell lung cancer. Peptide agonists of SSTR2 are rapidly internalized upon binding to the receptor and linking a toxic payload to an SSTR2 agonist is a potential method to kill SSTR2-expressing tumor cells. PEN-221 is a conjugate consisting of microtubule-targeting…

04Jun 2019 by Ronny Allan 4 Comments

LUTATHERA (PRRT) – Clinical Trial for Grade 2/Grade 3 Patients Advanced GEP-NET (NETTER-2)

Clinical Trials and Research, Treatment

Sep 25th, 2023. NETTER-2 trial Novartis radioligand therapy Lutathera® demonstrated statistically significant and clinically meaningful progression-free survival in first line advanced gastroenteropancreatic neuroendocrine tumors (GEP-NETs) Read more by clicking here. Original blog below. Brief Summary - The NETTER-1 trials led to the approval of Lu177 (or Lutathera), more commonly known in the community as Peptide Receptor Radio Therapy (PRRT). This led to an explosion of availability across the world but many gaps in service remain. Many PRRT spin off trials are in the pipeline looking at different types of PRRT, mainly using slightly different radionuclides and techniques. However, NETTER-2 builds on the success of the approved version formally known as Lutathera. The aim of NETTER-2 is to determine if Lutathera in combination with long-acting octreotide prolongs PFS in GEP-NET patients…

21May 2019 by Ronny Allan 5 Comments

Clinical Trial of Paltusotine for the Treatment of Neuroendocrine Tumours

Clinical Trials and Research

Update as of 5th May 2022One Phase 2 trial has now been entered in the Clinical Trials database, based at the University of Kentucky (Markey Cancer Center). Read the clinical trial document by clicking here. The purpose of this study is to evaluate the safety, pharmacokinetics (PK), and exploratory dose-response of paltusotine treatment in subjects with carcinoid syndrome. This study consists of a Randomized Treatment Phase followed by an Open-Label Extension (OLE) PhaseUpdate as of 12th January 2022.Crinetics also plans to advance paltusotine into a Phase 2 trial for the treatment of carcinoid syndrome associated with neuroendocrine tumors. Crinetics Pharmaceuticals, Inc. (Nasdaq: CRNX), a clinical stage pharmaceutical company focused on the discovery, development and commercialization of novel therapeutics for rare endocrine diseases and endocrine-related tumors, today announced that Scott Struthers, Ph.D., founder & CEO…

09May 2019 by Ronny Allan 5 Comments

A spotlight on Grade 3 (High grade) Neuroendocrine Neoplasms

A spotlight on NENs - Types, Awareness, Patient Advocacy

Reviewed and updated 30th May 2023High Grade Neuroendocrine Neoplasms - the forgotten patient group?When reading articles in the mainstream media, found in medical publications; and even listening to doctors speak about my disease, it's clear that the focus is on the term "Neuroendocrine Tumours" or NET for short. Many websites of advocate foundation organisations and specialist scientific organisations, all still use the term "NET" in their naming. I too am guilty of having a large Facebook site falling into this category. It's little wonder that those with high grade disease can often feel like the forgotten patient group. Clearly all the aforementioned organisations support all patients regardless of grade, but it's true to say that the naming and general use of terminology continues to fall behind. It's also true that…

19Dec 2018 by Ronny Allan 2 Comments

Neuroendocrine Cancer: a needle in a haystack?

Patient Advocacy

Reviewed and edited 16th July 2023It's no secret that Neuroendocrine Cancer can be difficult to diagnose. Although earlier diagnosis is improving (as reported in the SEER database report issued in 2017 and also in many other places), there is still a lot of ground to cover. There are a number of reasons why these Neoplasms are often difficult to correctly and quickly diagnose including but not limited to: - they grow silently, they often produce vague symptoms which can be mistaken for much more common illnesses, and their complexity is not fully understood.Neuroendocrine Cancer is a heterogenous group of cancers so I may use the following terms in this post:Neuroendocrine Neoplasm (NENs) - a combination term for both well differentiated Neuroendocrine Tumours (NETs) and Neuroendocrine Carcinomas (NECs)I wanted to cover…

10Dec 2018 by Ronny Allan 3 Comments

Neuroendocrine Cancer Clinical Trial – Lutetium-177 OPS-201 (Satoreotide)

Clinical Trials and Research

This trial drug was once owned by Ipsen but they decided to sell it off. However, in Jun 2022, Ariceum Therapeutics (Ariceum), a private biotech company developing a radiopharmaceutical product for the diagnosis and systemic targeted radiation therapy of certain hard-to-treat cancers, announced the successful investment source of EURO 25 Million. The proceeds from the financing will enable Ariceum to further develop its lead asset and proprietary peptide derivative, satoreotide. Satoreotide is a radiopharmaceutical drug and an antagonist of the somatostatin type 2 (SST2) receptor which is overexpressed in many cancers, including certain hard-to-treat cancers such as small cell lung cancer (SCLC), high-grade neuroendocrine tumours (NETs) and neuroblastoma, an aggressive, rare type of cancer that occurs mainly in young children. Satoreotide will be used as a 'theranostic' for both the diagnosis and…

30Aug 2018 by Ronny Allan 2 Comments

Detectnet™ (64Cu-DOTATATE) – an expansion of the Somatostatin Receptor PET Imaging for Neuroendocrine Cancer

Clinical Trials and Research, Living with Neuroendocrine Cancer, Treatment

Edit 21st January 2021. The imaging time window of 64Cu-DOTATATE positron emission tomography/computed tomography (PET/CT) for patients with neuroendocrine neoplasms can be expanded from one hour to three hours post-injection, according to new research published in the January 2021 issue of The Journal of Nuclear Medicine. Read more here Edit 4th September 2020. 64Cu-dotatate now named Detectnet™ is approved for use by US FDA. Majority read revealed Detectnet had over 98% accuracy, 100% sensitivity, and over 96% specificity to confirm or exclude presence of disease. Read more here. Edit 14th July 2020. Expanded Access Program via clinical trial now recruiting - see below. The objective of this trial is to provide patients with confirmed or suspicion of NET access to Copper Cu 64 Dotatate for the detection, localization, and monitoring of…

07Dec 2017 by Ronny Allan 4 Comments

Phase 3 Clinical Trial of PRRT ITM11 177Lu-Edotreotide (Solucin®) – COMPETE for GEPNETs

Clinical Trials and Research

Garching / Munich, October 27, 2022 ITM Isotope Technologies Munich SE (ITM), a leading radiopharmaceutical biotech company, today announced that the U.S. Food and Drug Administration (FDA) has granted the company Fast Track designation for ITM-11 (n.c.a. 177Lu-edotreotide), an investigational radiopharmaceutical for the treatment of gastroenteropancreatic neuroendocrine tumors (GEP-NETs). ITM-11 is being evaluated as a Targeted Radionuclide Therapy in two phase III clinical trials, COMPETE and COMPOSE.The FDA Fast Track is a process designed to facilitate the development and expedite the review of drugs to treat serious conditions and address an unmet medical need. The purpose is to bring new and promising medicines to patients sooner. The Fast Track designation enables ITM to have more frequent interactions with the FDA to discuss the ITM-11 development path. It also allows rolling review of the new drug application (NDA) for…

24Oct 2017 by Ronny Allan 2 Comments

Round up of NANETS 2017 – Let’s talk about NETs #NANETS2017

Awareness, Living with Neuroendocrine Cancer, Patient Advocacy, Survivorship, Treatment

NANETS (North American Neuroendocrine Tumor Society) is one of the biggest NET conferences, bringing together NET Specialists from around the world to discuss state-of-the-art treatment modalities, new therapies, and ongoing controversies in the field of Neuroendocrine Neoplasms (Tumors and Carcinomas). This is fairly complex stuff but much of it will be familiar to many. I’ve filtered out several outputs from the conference which I think are both relevant and topical to patients. The list is below allowing you to easily peruse and read further via linkages if you need to read more. Remember, some of these are extracts so do not contain all the details of the research or study – although some of the linkages will take you to in-depth information if that’s your bag. Where applicable, I’ve also linked…

08May 2017 by Ronny Allan 45 Comments

All you need to know about Peptide Receptor Radionuclide Therapy (PRRT)

Clinical Trials and Research, Treatment

Short PRRT PrimerWhat is Peptide Receptor Radionuclide Therapy (PRRT)?What is PRRT? PRRT stands for Peptide Receptor Radionuclide Therapy, an FDA-approved therapy used for systemic treatment of neuroendocrine tumors. Peptide refers to the small molecule for this therapy. The Peptide used (DOTATATE or DOTATOC or DOTANOC) is very similar to Somatostatin, a hormone which binds to receptors found on neuroendocrine tumors. Receptor refers to a specific target on neuroendocrine tumor cells that the peptide attaches to. After the peptide joins with a Receptor, it becomes attached and enters the targeted tumor cell. Radionuclide refers to radioactive atom that is attached to the peptide. As the peptide enters the cell, it brings the Radionuclide into the tumor cell. The radionuclide (e.g. lutetium-177), then decays and emits radiation within the tumor cell.Therapy refers to the idea that we are using this combination of Peptides, Receptors, and Radionuclides…

02Nov 2016 by Ronny Allan 9 Comments

Neuroendocrine Cancer – Exciting Times Ahead!

Inspiration, Survivorship, Treatment

In the last 12-24 months, there seems to have been announcement after announcement of new and/or upgraded/enhanced diagnostics and treatment types for Neuroendocrine Cancer. Scans, radionuclide therapies, combination therapies, somatostatin analogues, biological therapies, etc. Some of the announcements are just expansions of existing therapies having been approved in new (but significant) regions. Compared to some other cancers, even those which hit the headlines often, we appear to be doing not too badly. However, the pressure needs to stay on, all patients need access to the best diagnostics and treatments for them; and at the requisite time. There's even more in the pipeline and I'm hoping to continue to bring you news of new stuff as I have been doing for the last year. Some of these new diagnostics and treatments will benefit eligible patients who are…

25Jul 2016 by Ronny Allan 21 Comments

Somatostatin Receptors

Awareness, Treatment

Don't understand Somatostatin Receptors? Join the club! I got my head around the term 'Somatostatin' and 'Somatostatin Analogues' some time ago but the term 'Somatostatin Receptor' (SSTR) is still a bit of a mystery. SSTRs do come up in conversation quite often and I'm fed up of nodding sagely hoping it will eventually become clear! On analysis it looks like a technical subject - and therefore a challenge.I've taken a logical approach working from 'Somatostatin' to 'Somatostatin Analogue' before commencing on the 'receptor' bit. It is intentionally brief and (hopefully) simplistic!SomatostatinIt's important to understand this hormone and then why your 'butt dart' is generically called a 'Somatostatin Analogue'.Some Neuroendocrine Tumours secrete hormones and peptides that cause distinct clinical syndromes, including but not limited to, carcinoid syndrome.Somatostatin is a naturally occurring…

04Apr 2016 by Ronny Allan 3 Comments

Somatostatin Analogues and delivery methods in the pipeline

Awareness, Clinical Trials and Research, Living with Neuroendocrine Cancer

This is my live blog post covering new developments in the area of new Somatostatin Analogues and new delivery systems. AbstractAs most of you will be aware, there are currently two main types of Somatostatin Analogues (SSA) in use for the treatment of mainstream Neuroendocrine Tumours (NETs) - Octreotide and Lanreotide. You can click on the links for information on both of these well-known NET treatments. This post will focus on the not so well known and anything in the pipeline including different delivery systems.Those who have read the Octreotide/ Lanreotide patient leaflets will know those SSAs are also used in the treatment of a condition known as Acromegaly. You can see why the drug is used for both as they control the release of excess secretions of various substances, a…

Tag: Somatostatin receptors (SSTR)