Patient-Reported Burden of a Neuroendocrine Tumor (NET) Diagnosis: Results From the First Global Survey of Patients With NETs

The Economic Impact on Australian Patients with Neuroendocrine Tumours

BACKGROUND AND OBJECTIVE

Little is known about the economic burden to patients and families with neuroendocrine tumours (NETs) for medical out-of-pocket expenses and employment decisions. This study was performed to determine the extent and factors influencing the financial consequences of living with NETs and their effect on quality of life.

METHODS

We undertook an online cross-sectional survey using a targeted approach and collected Australian Medicare claims data. Validated surveys measured health-related quality of life (EuroQol 5-dimension 5-level [EuroQol-5D-5L]) and financial toxicity (COmprehenSive Financial Toxicity [COST]), supplemented with questions on employment and retirement, insurance and out-of-pocket medical expenses. Generalised linear models were performed to assess determinants of quality of life and out-of-pocket expenses recorded by Medicare.

RESULTS

The survey was answered by 204 patients with a mean age of 59 years who were diagnosed on average 5.2 years ago. Self-reported mean costs were 1698 Australian dollars ($A) (standard deviation [SD] $A2132) over 3 months (median $A877) and were highest for medical tests (mean $A376 [17% of total costs], SD $A722), travel-related expenses (mean $A289 [13%], SD $A559), and specialist visits (mean $A225 [10%], SD $A342) ($A1 = $US0.69). Imaging scans, surgery and travel expenses were the most common cost burdens reported by patients. Having private health insurance was the key determinant of higher out-of-pocket costs. Poorer quality of life was significantly associated with higher financial toxicity, not working due to cancer, nausea/diarrhoea, two or more co-morbidities and younger age.

CONCLUSIONS

Medical expenses are substantial for some patients with NETs. Quality of life is adversely affected for patients experiencing financial toxicity and avoiding early retirement is an important issue for supportive care services.

Novel therapeutics for patients with well-differentiated gastroenteropancreatic neuroendocrine tumors

Gastroenteropancreatic (GEP) neuroendocrine tumors (NETs) represent the most common subtype of NETs. The incidence of all NETs, and specifically GEP NETs, has risen exponentially over the last three decades. Only within the past several years have these tumors been appropriately classified, allowing for meaningful drug development. Broadly, some of the most exciting drug classes being developed for patients with well-differentiated GEP NETs include newer types of peptide receptor radionuclide therapy (PRRT) or combinations which increase the potency of lutetium-177 (177Lu)-Dotatate, novel multi-target receptor tyrosine kinase inhibitors (RTKIs) and immunotherapy modalities, beyond checkpoint inhibitors, which seek to unleash the immune system against NETs. Specifically looking at newer types of PRRT, somatostatin receptor antagonists and alpha-emitter radionuclides each have demonstrated the ability to elicit greater DNA damage than 177Lu-Dotatate in preclinical models. Early clinical experiences with each of these agents suggest they may be more cytotoxic than 177Lu-Dotatate. Other approaches seeking to build upon the DNA damage created by 177Lu-Dotatate include combinations of PRRT with radiosensitizers such as heat shock protein 90 inhibitors, hedgehog inhibitors, chemotherapy combinations, and triapine. Many of these combinations have just begun to be tested clinically. With regards to novel RTKIs, some of the ones which have demonstrated potent cytoreductive potential include cabozantinib and lenvatinib. Other RTKIs which are further along the clinical development spectrum and have demonstrated benefit in randomized trials include surufatinib and pazopanib. And though single-agent immune checkpoint inhibitors have not demonstrated significant anti-tumor activity in patients with GEP NETs, outside of certain biomarker selected subsets, somatostatin receptor-directed chimeric antigen receptor (CAR) T cells and vaccines such as SurVaxM, which targets survivin, represent two means through which NET-directed immunity may be modulated. The potential of these agents, if clinically realized, will likely improve outcomes for patients with well-differentiated GEP NETs.

Exploration of machine learning techniques to examine the journey to neuroendocrine tumor diagnosis with real-world data

Aim: Machine learning reveals pathways to neuroendocrine tumor (NET) diagnosis. Patients & methods: Patients with NET and age-/gender-matched non-NET controls were retrospectively selected from MarketScan claims. Predictors (e.g., procedures, symptoms, conditions for which NET is misdiagnosed) were examined during a 5-year pre-period to understand presence of and time to NET diagnosis using conditional inference trees. Results: Among 3460 patients with NET, 70% had a prior misdiagnosis. 10,370 controls were included. Decision trees revealed combinations of factors associated with a high probability of being a patient with NET (e.g., abdominal pain, an endoscopic/biopsy procedure, vomiting) or longer times to diagnosis (e.g., asthma diagnosis with visits to >6 providers). Conclusion: Decision trees provided a unique examination of the journey to NET diagnosis.

Impact of Specific Bowel Symptoms on Quality of Life in Patients with Midgut Neuroendocrine Tumours

Introduction

Patients with midgut neuroendocrine tumours (NETs) suffer from decreased health-related quality of life (HRQoL), in large part due to bowel symptoms. However, it is unknown which bowel symptoms affect HRQoL the most. An enhanced understanding of this is essential to better focus treatment on this aspect of the disease. This study aimed to determine which bowel symptoms affect HRQoL the most in patients with midgut NETs.

Methods

Consenting patients with midgut NET completed the Memorial Sloan Kettering Bowel Function Instrument and the HRQoL questionnaire (EORTC QLQ-C30). The correlation between bowel symptoms and HRQoL was analysed using multiple linear regression, adjusting for age, Charlson Comorbidity Index score, presence of metastatic disease, chromogranin A, and BMI yielding ß-coefficients with 95% confidence intervals.

Results

Totally, 119 patients with midgut NET completed the questionnaires and were included in the study. Loose stool and bowel frequency ≥ 3/day were the most common bowel symptoms, reported by 47% and 56% of patients, respectively. However, sensitivity to certain types of food and beverages, a feeling of incomplete emptying of the bowel, and soiling were the symptoms most strongly correlated with decreased HRQoL, especially within domains concerning role and social function, with ß-coefficients for the strongest correlated symptoms of 15.0 and 14.6, respectively.

Discussion

While symptoms concerning stool consistency and frequency are common in patients with midgut NET, our study suggests that other, more socially stigmatising symptoms affect patients’ HRQoL more. Our findings could help caregivers understand patients’ perceptions of the disease and provide avenues for more directed therapies.

Supplementary Information

The online version contains supplementary material available at 10.1007/s00268-021-06146-9.

Advanced Pancreatic Neuroendocrine Neoplasms: Which Systemic Treatment Should I Start With?

PURPOSE OF REVIEW

Pancreatic neuroendocrine neoplasms (panNENs) often present as advanced disease and there is little data to guide treatment sequencing in the advance disease setting. Therefore, we aim to provide a comprehensive summary of the current evidence supporting the use of systemic treatment for patients with diagnosis of advanced and metastatic panNENs, as well as to provide strategies for treatment selection and address challenges for treatment selection and sequencing of therapy.

RECENT FINDINGS

Substantial advances have been made and many clinical trials have been performed over the past two decades expanding therapeutic options available for patients with advanced panNETs. Available systemic treatments for patients with well-differentiated pancreatic neuroendocrine tumors include somatostatin receptors ligands (SRLs), traditional cytotoxic chemotherapy regimens, peptide receptor radiotherapy (PRRT), and biologically targeted therapies, whereas patients with poorly differentiated neurodocrine carcinomas have more limited treatment options. Despite these advances, no clear guidelines exist to support the best sequence of treatments, not only the first-line, but also subsequent lines of therapy in patients with panNENs. Advances in molecular research and discovery of biomarkers for response allowing a more personalized approach to the multimodality therapy of panNENs are still limited. Understanding the impact of previous therapies on subsequent treatment efficacy and toxicity is also an ongoing research question. In the absence of definite predictive markers and paucity of comparative randomized trials, along with the heterogeneity of this patient population, systemic therapy selection in advanced non-resectable disease should be patient centered and often require evaluation within a multidisciplinary setting. The specific clinical context of the patient, with assessment of individual patient clinical and pathological features, somatostatin receptors imaging, and goals of treatment must all be considered when deciding on systemic therapy in the patient. Additional research is needed to address the gap in knowledge regarding optimal sequencing and timing of therapies and to provide individual care.

Symptom Diaries of Patients with Midgut Neuroendocrine Tumors Treated with 177Lu-DOTATATE

We report the impact of 177Lu DOTATATE treatment on abdominal pain, diarrhea, and flushing, symptoms that patients with advanced midgut neuroendocrine tumors (NETs) often find burdensome. Methods: All patients enrolled in the international randomized phase 3 Neuroendocrine Tumors Therapy (NETTER-1) trial (177Lu-DOTATATE plus standard-dose octreotide long-acting repeatable [LAR], n = 117; high-dose octreotide LAR, n = 114) were asked to record the occurrence of predefined symptoms in a daily diary. Change from baseline in symptom scores (mean number of days with a symptom) was analyzed using a mixed model for repeated measures. Results: Patients (intent-to-treat) who received 177Lu-DOTATATE experienced a significantly greater decline from baseline in symptom scores than patients who received high-dose octreotide LAR. For 177Lu-DOTATATE, the mean decline in days with abdominal pain, diarrhea, and flushing was 4.10, 4.55, and 4.52 days per 4 weeks, respectively, compared with 0.99, 1.44, and 2.54 days for high-dose octreotide LAR. The mean differences were 3.11 days (95% confidence interval, 1.35-4.88; P = 0.0007) for abdominal pain, 3.11 days (1.18-5.04; P = 0.0017) for diarrhea, and 1.98 days (0.08-3.88; P = 0.0413) for flushing, favoring 177Lu-DOTATATE. A positive repeated measures correlation was found between diary-recorded symptom scores and questionnaire-recorded pain, diarrhea, and flushing. Conclusion: In addition to efficacy and quality of life benefits, symptom diaries from NETTER-1 demonstrated that treatment with 177Lu DOTATATE was associated with statistically significant reductions in abdominal pain, diarrhea, and flushing, constituting the core symptoms of patients with progressive midgut NETs, compared with high-dose octreotide LAR, supporting a beneficial effect of 177Lu DOTATATE on HRQoL.

The Role of Patient Support Groups in Neuroendocrine Neoplasms

PURPOSE OF REVIEW

The purpose of this review is to establish the role patient support groups play in NENs.

RECENT FINDINGS

Published data on the role and work done by these groups is extremely sparse, so the review references publications in the wider cancer advocacy context. For the purposes of the review, a survey was carried out among the members of a global umbrella organization to ascertain the level of activities undertaken in support of the NEN patient community. The concept of "support groups" has changed significantly, as these groups have evolved from patient peer-to-peer support provision to a strategic focus on improving awareness and education among all stakeholders, generating patient evidence to influence policies for access to optimal diagnostics, treatment, and care, and setting the research agenda. Today, NEN patient organizations have an instrumental role of catalysts of change across the healthcare spectrum-especially relevant in a setting of less common and not well-understood diseases, where clear pathways and guidelines are still a challenge.

Coping with social consequences of disease-related symptoms in patients with a metastatic small intestinal neuroendocrine tumour: A qualitative study

Patients with small intestine neuroendocrine tumours (SINETs) face various disease-related symptoms that can affect their social functioning and quality of life. The present study aimed to explore the social consequences of disease-related symptoms in patients with a metastatic SINET and to develop a theory on how these patients experience their disease. Patients were eligible when they were diagnosed with a metastatic SINET between 2009 and 2016 and were younger than 60 years of age during diagnosis, and had a good functional performance status. Semi-structured interviews were conducted between January and June 2018. Data were transcribed and analysed independently by two researchers using grounded theory. Data saturation was reached at 10 interviews and, in total, 12 patients participated. A core component that arose from the interviews was resilience in the face of social consequences of having a metastatic SINET. Prominent physical symptoms were fatigue, diarrhoea and flushes. All of these symptoms were associated with limitations to function in work-related and social activities, as well as feelings of embarrassment and shame. Adaptive strategies, such as careful planning, or focusing on the perspective to live well with a neuroendocrine tumour, helped patients to experience the consequences as less burdensome. Other helpful factors that were identified constituted social support, engaging in meaningful activities and financial stability. Patients with a metastatic SINET experienced social consequences of disease-related symptoms in daily life, although they were able to attenuate the burden of these consequences by using adaptive problem-based, emotion-based and meaning-based coping strategies. Clinicians could explore the perceived consequences and educate patients about adaptive strategies.

The Potential Role of Liquid Biopsies in Advancing the Understanding of Neuroendocrine Neoplasms

Tumour tissue as a source for molecular profiling and for in vivo models has limitations (e.g., difficult access, limited availability, single time point, potential heterogeneity between primary and metastatic sites). Conversely, liquid biopsies provide an easily accessible approach, enabling timely and longitudinal interrogation of the tumour molecular makeup, with increased ability to capture spatial and temporal intra-tumour heterogeneity compared to tumour tissue. Blood-borne biomarker assays (e.g., circulating tumour cells (CTCs), circulating free/tumour DNA (cf/ctDNA)) pose unique opportunities for aiding in the molecular characterisation and phenotypic subtyping of neuroendocrine neoplasms and will be discussed in this article.

Development of the Functional Assessment of Cancer Therapy-Carcinoid Syndrome Symptom Index

OBJECTIVE

To develop a symptom-focused index to evaluate representative symptoms, treatment side effects, and emotional and functional well-being of patients with carcinoid syndrome (CS).

METHODS

The development of the Functional Assessment of Cancer Therapy-Carcinoid Syndrome Symptom Index (FACT-CSI) followed US Food and Drug Administration guidelines for the development of patient-reported outcome (PRO) measures and involved the following: (a) literature review; (b) interviews with 14 CS patients; (c) interviews with 9 clinicians; and (d) instrument development involving input from a range of PRO measure development and CS experts. The resulting draft instrument underwent cognitive interviews with 7 CS patients.

RESULTS

Forty-six CS sources were reviewed. Analysis of patient interviews produced 23 patient-reported symptoms. The most frequently endorsed physical symptoms were flushing, diarrhea, abdominal pain, fatigue, and food sensitivity/triggers. Seven priority CS emotional and functional themes were also identified by patients. Expert interviews revealed 12 unique priority symptoms - the most common being diarrhea, flushing, wheezing, edema, abdominal pain/cramping, fatigue, and 8 emotional and functional concerns. Through an iterative process of team and clinical collaborator meetings, data review, item reduction and measure revision, 24 items were selected for the draft symptom index representing symptoms, emotional concerns, global assessment of treatment side effects, and functional well-being. Cognitive interview results demonstrated strong content validity, including positive endorsement of item clarity (>86% across items), symptom relevance (>70% for most items), and overall measure content (86%).

CONCLUSIONS

The FACT-CSI is a content-relevant, symptom-focused index reflecting the highest priority and clinically relevant symptoms and concerns of people with CS.

Patient reported experience of the burden of neuroendocrine tumors and impact of eSHINE Patient Support Program on patient quality of life

AIM

Neuroendocrine tumors (NETs) are an uncommon cancer and difficult to diagnose and treat. Treatment is complicated by debilitating side effects, impacting quality of life. This Australia-wide survey aimed to increase our understanding of the impact and burden of NETs on patient quality of life (QoL) and to assess the benefit of a patient support program (eSHINE).

METHOD

Consented patients from the eSHINE mailing list (n = 267) were invited to participate in an electronic self-reported survey comprising 29 questions on clinical characteristics, diagnosis, sociodemographics, impact of living with NETs and benefits of a patient support program. No formal sample size was calculated. All analyses were descriptive.

RESULTS

A total of 144 participants (54%) responded. A total of 129 (48%) completed all questions. Approximately half of respondents were female, from metropolitan and rural areas, aged over 65 years and had a primary diagnosis of gastrointestinal NETs. Fifty-eight percent had been diagnosed over 5 years ago. Twenty-seven percent reported seeing four or more healthcare professionals prior to being diagnosed. Living with NETs had a large impact on patients' QoL. 83.5% reported fatigue, 76% felt their emotional health was impacted by NETs and 75% reported reduced ability to participate in leisure activities. Access to a supportive network to manage and treat NETs was extremely important to participants. Eighty-five percent of respondents reported the eSHINE program had a positive impact on their QoL.

CONCLUSION

Patients value support from healthcare professionals and patient support programs such as eSHINE in managing NETs. The eSHINE Patient Support Program has a positive impact on patient QoL.

Neuroendocrine tumours: what gastroenterologists need to know

Gastroenterologists are intermittently involved in diagnosing and managing patients who have neuroendocrine tumours (NETs). However, few UK gastroenterologists have received extensive training about this topic. This article aims to provide a brief introduction to NETs; it is aimed at a general gastroenterologist audience. NETs present in diverse ways and many symptomatic patients unfortunately experience significant delays in diagnosis. Comprehensive evaluation of a patient with a possible NET involves assessing their symptoms, the tumour's primary organ of origin, its differentiation status, grade and stage, whether the NET is secreting hormones and whether there is any underlying hereditary predisposition. Such assessment often needs specialist investigations such as nuclear medicine scans. All these factors influence patient management and prognosis, so a patient's case and investigations should always be discussed by a fully constituted NET multidisciplinary team. Most localised tumours are considered for resection, but there are multiple treatment options for metastatic disease and many patients receive several different therapies during the course of their illness. The most common first line treatment in patients who have metastatic low grade NETs is monthly long acting somatostatin analogue injections. Prognosis is highly variable, but some patients who have inoperable metastases survive for many years on treatment with good quality of life. Gastroenterologists may also be involved in managing the non-tumour associated chronic gastrointestinal problems that some patients experience. Their involvement has been shown to improve patient-reported outcomes and quality of life.

Evaluation of Nurses' and Patients' Overall Satisfaction with New and Previous Formulations of Octreotide Long-acting Release (Sandostatin LAR®): A French Observational Study

INTRODUCTION

The first long-acting release (LAR) formulation of octreotide was marketed in France in the late 1990s. An injectable formulation of Sandostatin LAR^® (Novartis SAS) with a new diluent has been developed to facilitate its preparation and administration and to improve its use in practice.

METHODS

We conducted an observational, cross-sectional and multicenter study in France whose main outcome was to compare nurses' satisfaction with the preparation and administration of both previous and new formulations of octreotide LAR. Secondary outcomes included assessment of patient satisfaction (quality of life and pain felt during the injection) and product tolerance. Data were collected at two time points (one for the first formulation group and one for the second formulation group) through paper questionnaires administered to physicians, patients and nurses including a visual analog scale (VAS) from 0 (unsatisfied) to 10 (very satisfied).

RESULTS

Results showed that overall nurse satisfaction improved from 5.3 (95% CI 4.9-5.8) with the previous formulation to 7.5 (95% CI 7-7.9) with the new formulation (p < 0.0001). Regarding secondary outcomes, the simplicity of the injection increased (84% for the previous formulation and 94% for the new formulation) and the purge problem disappeared (36% for the previous formulation and 4% for the new formulation).

CONCLUSION

The improvement due to the new formulation of Sandostatin LAR^® was reported in terms of handling, ease of use and overall nurse satisfaction. The new formulation greatly reduced treatment administration problems associated with the previous formulation, while maintaining low injection site pain and an equivalent safety profile in both indications.

Patient Survey of the Physical, Emotional, and Informational Challenges for Patients Living with Neuroendocrine Tumors

Introduction

Patient surveys of disease burden on daily living rarely explore the impact that patient information sources can have on optimizing care.

Methods

To identify unmet needs/possible solutions for information and support to address the physical, emotional, and informational challenges that patients living with neuroendocrine tumors (NETs) may have, an online survey was conducted among patients recruited by the Carcinoid Cancer Foundation (US), Netzwerk Neuroendokrine Tumoren (NeT) e.V. (Germany), and Association de Patients porteurs de Tumeurs Endocrines Diverses (France); these organizations approved the survey questions.

Results

Between August 2015 and November 2015, 741 online surveys were completed in France (n  = 73), Germany (n  = 240), and the US (n = 428) during a 6-week period. Over 65% of patients were diagnosed ≤ 5 years ago. Across the three countries, multiple symptoms were experienced before diagnosis. These symptoms were consistent with those of functional tumors, most commonly diarrhea (40–47%) and flushing (12–45%). The most common emotion upon diagnosis was anxiety (20–67%). The greatest physical challenges for patients living with NETs included fatigue (26–66%), diarrhea (22–48%), pain/discomfort (13–40%), and sleep disturbance (16–35%), despite cancer management. Information sources classed as “very useful” included patient-association websites, disease awareness websites, and journals; “patients-like-me” case studies were most favored (43–67%) for future use as sources of information.

Conclusion

Patients with NETs face negative emotions and multiple physical challenges that require psychological support/coping strategies, and they seek reliable, personally relevant, easily understood information, including that from interactions with other patients.

Plain Language Summary

Plain language summary available for this article.

Electronic Supplementary Material

The online version of this article (10.1007/s40487-019-00103-2) contains supplementary material, which is available to authorized users.

An Update on Gastroenteropancreatic Neuroendocrine Neoplasms: From Mysteries to Paradigm Shifts

Although neuroendocrine neoplasms (NEN) were once thought to be rare and mostly "benign" diseases, they are now being redefined in light of recently discovered molecular information. NENs constitute a spectrum of variably differentiated neoplasms, ranging from well-differentiated tumors with a protracted course over many years to very aggressive neuroendocrine carcinomas. Although the majority of NEN are non-functional lesions, some of these tumors, do produce a hormonal hypersecretion syndrome. Their reappraisal has led scientist to unveil previously unknown oncogenic pathways and connections that resulted in a new category in the International Classification of Diseases (ICD-11) and a revised version of the World Health Organization Classification (WHO 2018). Complex diseases like NEN require a multidisciplinary approach that includes the perspectives of endocrinologists, medical and surgical oncologists, radiation oncologists, imaging specialists and pathologists. There are currently virtually thousands of ongoing trials evaluating the efficacy and safety of several molecular targeted therapies. The purpose of this review was to critically evaluate recent information regarding the pathogenesis, diagnosis and treatment of NEN.

Assessment and State of Nutrition of Patients with Gastroenteropancreatic Neuroendocrine Neoplasms

Introduction: In recent decades, the number of gastro-entero-pancreatic neuroendocrine neoplasms (GEP-NENs) cases, associated with coexisting metabolic disorders, has been continuously increasing. Patients with progressing neoplastic disease are at a risk of malnutrition. To improve the quality of life of neuroendocrine neoplasms (NEN) patients, the therapeutic approach should be supported by a well-balanced diet. The aim of the study was to analyze the nutritional errors and deficits in a group of GEP-NET patients. Materials and methods: The study group included 26 GEP-NET patients; 13 men and 13 women. The mean age of women was 68.77 ± 8.0, and the mean age of men was 64.69 ± 8.1. Three interviews on consumption in the last 24 h were performed, in order to evaluate the quality and quantity of nutrition. The data was incorporated into a dietetics software, which allows one to calculate the number of over 58 micronutrients and macronutrients with the participation of 52 menus. Subsequently, the mean values were compared with the current nutritional standards. Results: An energy deficit was observed in the group of women—76.9%, and men—100%, as well as high fat consumption in 23.1% in both groups. The proportions of SFA/MUFA/PUFA were very negative, whereas the consumption of saccharose was too high. Vitamin D deficiency was observed in 100% of men and women. Moreover, both men and women experienced the deficiency of vitamin E, folates and niacin. The consumption of sodium and phosphorus was twice as high as recommended, and an insufficient supply of calcium was observed in 80% of women and 90% of men. The insufficient consumption of magnesium, iodine and potassium in a significant part of the studied group was observed. All participants consumed too much cholesterol and insufficient amounts of fiber. The healthy diet indicator (HDI) and diet quality index (DQI) scores were 3.1 ± 1.8 (HDI) and 3.7 ± 1.6 (DQI) for women, and 7.2 ± 2.6 (HDI) and 8.5 ± 2.4 (DQI) for men. Conclusions: When analyzing the nutrition of GEP-NET patients, we highlight that they do not have a proper diet, despite the fact that they changed the way they eat. Dietetics support and the development of official nutritional standards seem to be a necessary element in the therapy of GEP-NET patients.

Living With Neuroendocrine Tumors: Assessment of Quality of Life Through a Mobile Application

PURPOSE

To understand the quality of life (QoL) for patients with neuroendocrine tumors (NETs) through comparison of QoL questionnaires and symptom tracking as well as journaling via the Carcinoid NETs Health Storylines mobile application (app).

PATIENTS AND METHODS

This was a 12-week prospective, observational study of US patients with NET who were taking long-acting somatostatin analogs. National Institutes of Health Patient-Reported Outcomes Measurement Information System (PROMIS) and European Organisation for Research and Treatment of Cancer (EORTC) questionnaires were administered three times. Patients also monitored symptoms, mood, bowel movements, food, activity, and sleep, and they journaled in their app, which was coded by theme and sentiment for qualitative analysis.

RESULTS

Of the 120 patients with NET, 78% were women (mean age, 57 years); 76% had gastroenteropancreatic NETs, and 88% had metastases. Lanreotide depot and octreotide long-acting release (LAR) were used by 41% and 59%, respectively. The most common symptoms at baseline were fatigue (76.7%), diarrhea (62.5%), abdominal discomfort (64.1%), and trouble sleeping (57.5%). The majority completed five of six survey assessments (median, 5; mean, 5.1) and tracked four symptoms in the app (median, 4; mean, 5.5); the average frequency was 41.6 days for each symptom (median, 43; mean, 41.6; range, 1 to 84 days [12 weeks]). Without treatment change, most EORTC-assessed physical symptoms decreased from baseline to midpoint (eg, 59.3% at baseline v 33% at midpoint reported “quite a bit” or “very much” diarrhea; P = .002). App-based symptom tracking revealed large day-to-day variation, but weekly averages correlated well with survey scores. Journal entries showed that more patients made predominantly negative unsolicited entries about their injection experience with octreotide LAR compared with lanreotide (13 of 17 v two of 13; P < .001).

CONCLUSION

Patients with NET experience a large symptom burden that varies daily. A decrease in physical symptoms on QoL surveys suggests an effect from daily app-based monitoring or journaling, which may reduce recall bias and benefit the patient’s experience of symptoms.

French patient-reported experience of diagnosis, management and burden of neuroendocrine tumors

Background: There is a lack of knowledge regarding the experience of patients with neuroendocrine tumors (NET) in France. Materials & methods: A patient survey that captured information on diagnosis, disease impact/management and awareness was conducted. Data of respondents from France were analyzed and compared with US data as a reference. Results: Key topics included delays in diagnosis, negative impact on quality of life, patient access to NET medical experts and treatments, and information on NET and treatments. Significant differences were observed between France and the USA regarding NET diagnosis. Conclusion: This survey highlights the considerable burden experienced by patients in France with NET and differences in patient experience between France and the USA that may result from different healthcare and social systems.

Nutritional Complications and the Management of Patients with Gastroenteropancreatic Neuroendocrine Tumors

Neuroendocrine tumors (NETs) have increased in incidence and prevalence over the past 2 decades and affect approximately 170,000 people in the United States alone. Gastroenteropancreatic (GEP) NETs (GEP NET) are a heterogeneous group of rare tumors that have distinct effects on the body due to their tumor location and potential to secrete hormones and peptides. Clinical practice guidelines and consensus guidelines for GEP NETs with regard to best practice for diagnosis, treatment, and medical management are available, but the supportive care needs and optimal nutritional management of patients affected by these unique tumors remain under-researched: evidence to guide clinical practice is lacking. The pathophysiology of the disease and its treatment can cause various symptoms that can have significant effects on vitamin synthesis and absorption, dietary habits, weight change, and appetite. Deficiency of fat-soluble vitamins and niacin exists amongst patients with GEP NET, particularly those on treatment with somatostatin analogs and with serotonin-secreting tumors, respectively. Malnutrition and dietary modification amongst patients with GEP NET is more prevalent than initially thought: up to 25% of inpatients with GEP NET are malnourished. Food intolerance is also reported in up to 40-90% of these patients, though its misdiagnosis is common. This review summarizes the evidence regarding the impact of GEP NET and its treatment on nutritional factors in these patients with emphasis on malnutrition, vitamin deficiencies, dietary intake, and quality of life. Recommendations for clinical practice and research approaches to address these nutritional issues are discussed.

Direct costs of carcinoid syndrome diarrhea among adults in the United States

BACKGROUND

The burden of carcinoid syndrome (CS) among patients with neuroendocrine tumors is substantial and has been shown to result in increased healthcare resource use and costs. The incremental burden of CS diarrhea (CSD) is less well understood, particularly among working age adults who make up a large proportion of the population of patients with CS.

AIM

To estimate the direct medical costs of CSD to a self-insured employer in the United States.

METHODS

CS patients with and without CSD were identified in the IBM^® MarketScan^® Database, including the Medicare Supplemental Coordination of Benefits database. Eligible patients had ≥ 1 medical claim for CS with continuous health plan enrollment for ≥ 12 mo prior to their first CS diagnosis and for ≥ 30 d after, no claims for acromegaly, and no clinical trial participation during the study period (2014-2016). Baseline demographic and clinical characteristics, including comorbidities and treatment, were analyzed using descriptive statistics. Measures of healthcare resource use and costs were compared between patients with and without CSD, including Emergency Department (ED) visits, hospital admissions and length of stay, physician office visits, outpatient services, and prescription claims, using univariate and multivariate analyses to evaluate associations of CSD with healthcare resource use and costs, controlling for baseline characteristics.

RESULTS

Overall, 6855 patients with CS were identified of which 4,043 were eligible for the analysis (1352 with CSD, 2691 with CS only). Baseline demographic and clinical characteristics were similar between groups with the exception of age, underlying tumor type, and health insurance plan. Patients with CSD were older, had more comorbidities, and received more somatostatin analog therapy at baseline. Patients with CSD required greater use of healthcare resources and incurred higher costs than their peers without CSD, including hospitalizations (44% vs 25%) and ED visits (55% vs 31%). The total adjusted annual healthcare costs per patient were 50% higher (+ $23865) among those with CSD, driven by outpatient services (+ 56%), prescriptions (+ 48%), ED visits (+ 26%), physician office visits (+ 21%), and hospital admissions (+ 11%).

CONCLUSION

The economic burden of CSD is greater than that of CS alone among insured working age adults in the United States, which may benefit from timely diagnosis and management.

Exploring the current status of neuroendocrine tumours: a population-based analysis of epidemiology, management and use of resources

Background

Neuroendocrine tumours (NETs) are rare malignancies characterised by its capacity to synthesise and secrete monoamines, due to its neuroendocrine origin. Its varied locations and symptoms have traditionally been responsible for extended delays in their diagnosis. The interest of this study was to characterise the patient population diagnosed with NETs in Spain and to revise how the disease is managed, together with the hospitalisation costs of these patients.

Methods

The database included records of all patients diagnosed with a NET between 2010 and 2015. Admission records were used to evaluate hospitalisation, disease management data and costs, and single-patient files were used to characterise the population.

Results

Nine Thousand One Hundred Twenty patients were diagnosed with a neuroendocrine tumour between 2010 and 2015, with a 2 fold increase in the diagnosis rate over the study period. 42.25% of the patients were females, while 57.75% were males, and mean diagnosis age was 62.58 years (SD = 14.65). Considering all the registered neuroendocrine neoplasms, 46.86% of the patients had malignant well-differentiated NETs, 32.02% had a malignant poorly differentiated neuroendocrine carcinoma and 42.93% of patients developed metastatic NETs. In addition, 18.59% of patients were diagnosed with benign well-differentiated NETs. The most common tumour sites were the bronchus, lung and other sites, including pancreatic tumours; metastasis was found in the liver and distant lymph nodes. Pancreatic resection was the most common surgical procedure utilised in these patients, summing 19% of total expenses, the injection of an unspecified therapeutic substance (including targeted therapies) was registered in 11.40% of admissions, while chemotherapy was registered in only 6.85% of admissions. The annual healthcare cost of NETs was €15,373,961, corresponding to €9092 per patient.

Conclusions

The implementation of standard diagnosis procedures should be prioritised, with a focus on the pancreas and lung, and taking into account that 42.93% of the patients develop a metastatic tumour. The presence of comorbidities and multimorbidities should be considered in order to develop more efficient disease management protocols.

A typical carcinoid of the lung - a case report with pathological correlation and propagation of the cancer stem cell line BKZ1 with synaptophysin expression

RATIONALE

Neuroendocrine tumors (NETs) of the lung account for 5% of all cases of lung cancer, which itself is the leading cause of cancer-related death worldwide. In accordance to its rarity, only few cell lines of NETs exist, which even often lack key characteristics of the primary tumor, making it difficult to study underlying molecular mechanisms.

PATIENT CONCERNS

The patient reported in this case is a 71-year old woman, which never smoked but suffered under dry cough.

DIAGNOSES

Chest CT-scan showed a paracardiac nodule of the lingula with 2 × 1.8 cm in diameter.

INTERVENTIONS

The detected paracardiac nodule of the lingula was anatomically resected using video assisted thoracic surgery.

OUTCOMES

Histopathological diagnostic of the removed tissue identified the tumor as a well-differentiated typical carcinoid (TC), which represents one of the four subgroups of pulmonary NETs. Next to the successful treatment of the patient, we were able to propagate cancer stem cells (CSCs) out of the resected tumor tissue. To the best of our knowledge, we firstly isolated CSCs of a typical carcinoid, which were positive for the prominent CSC markers CD44, CD133 and nestin, confirming their stem cell properties. Additionally, CSCs, further referred as BKZ1, expressed the neuroendocrine marker synaptophysin, verifying their neuroendocrine origin. However, nuclear synaptophysin protein was also present in other stem cell populations, suggesting a role as general stem cell marker.

LESSON

In line with the importance of CSCs in cancer treatment and the lack of CSC-models for neuroendocrine neoplasms, the here described BKZ1 cancer stem cell line of a typical carcinoid represents a promising new model to study pulmonary carcinoids and particular NETs.

TELEPRO: Patient-Reported Carcinoid Syndrome Symptom Improvement Following Initiation of Telotristat Ethyl in the Real World

BACKGROUND

When carcinoid syndrome (CS) diarrhea (CSD) is inadequately controlled with long-acting somatostatin analogs (SSAs), clinical practice guidelines recommend addition of the tryptophan hydroxylase inhibitor telotristat ethyl (TE). In a 12-week multinational, randomized controlled trial, TE added to SSA reduced peripheral serotonin and the frequency of CSD. We evaluated real-world effectiveness of TE using patient-reported data from a nurse support program over 3 months.

MATERIALS AND METHODS

This study used a deidentified data set of patients initiating TE who opted into a nurse support program between March and November 2017 and reported CS symptom burden at baseline and at least one follow-up time point at months 1, 2, and 3. Patients reported demographic and medical history information as well as frequency of bowel movements (BMs) and flushing episodes, severity of nausea, urgency and abdominal pain (0 "no/not at all" to 100 "worst imaginable/very urgent"), and stool form (1 "very hard" to 10 "watery"). Mean changes from baseline in CS symptom burden were reported using paired-sample t tests and Wilcoxon signed-rank tests.

RESULTS

Most patients initiating TE enrolled in the nurse program (791/898, 88%), of whom 369 (47%) were included in the analysis. Patients treated with TE reported significant reductions in CSD and other CS symptoms (all p < .001). At least half of patients treated with TE experienced ≥30% improvement from baseline in BM frequency and an average reduction of at least two BMs per day within 3 months.

CONCLUSION

Patients taking SSA therapy showed substantial burden of disease before initiating TE and significant improvements with the addition of TE treatment in this real-world effectiveness study.

IMPLICATIONS FOR PRACTICE

Patients with carcinoid syndrome diarrhea uncontrolled by high doses of long-acting somatostatin analogs may be candidates for additional therapy with the tryptophan hydroxylase inhibitor telotristat ethyl. Understanding the real-world prevalence of uncontrolled symptoms and the effectiveness of telotristat ethyl in clinical practice may further support clinical and policy decisions for these patients. This study investigated self-reported carcinoid syndrome symptom burden and improvements among patients initiating telotristat ethyl and participating in a voluntary nurse support program. Disease burden and off-label somatostatin analog treatment before initiating telotristat ethyl were high, and symptoms improved markedly over 1, 2, and 3 months of treatment.

A Patient-Reported Outcomes Analysis Of Lanreotide In The Treatment Of NETs Patients With Carcinoid Syndrome: Evidence From The ELECT Trial

Purpose

The purpose of this analysis of patient-reported outcomes from the ELECT (Evaluation of Lanreotide Depot/Autogel Efficacy and Safety as a Carcinoid Syndrome Treatment) trial (NCT00774930) was to explore the effect of lanreotide on symptoms of carcinoid syndrome. Specifically, this post hoc analysis was designed to identify the most important patient-reported outcomes for patients in ELECT.

Methods

The post hoc analysis of ELECT, a placebo-controlled study of lanreotide in patients with neuroendocrine tumors, evaluated patient-reported outcomes during the double-blind phase of the trial, specifically daily diarrhea and flushing symptoms, octreotide rescue use, and the EORTC QLQ-C30 and QLQ-GINET21 questionnaires at baseline and week 12. Principal component (PC) analysis was applied on baseline data to identify independent variable clusters and clinically meaningful summary measures that highly correlated to these PCs. From those, the minimum clinical important differences were derived so to perform a responder analysis.

Results

The three largest PCs captured 42.9% of the variation among baseline variables. The C30 summary score (C30-SS), diarrhea burden, and flushing burden were highly correlated with PC1, PC2, and PC3, respectively. Lanreotide patients were more likely to experience an improvement on the C30-SS (risk ratio [RR] 2.42; P=0.023), diarrhea burden (RR 2.85; P=0.005), and flushing burden (RR 1.39; P=0.31) compared to placebo patients. Lanreotide-treated patients have a higher probability of being a responder on at least one of the three domains of C30-SS, diarrhea burden, or flushing burden compared to placebo patients (RR 1.48; P=0.06).

Conclusion

The higher response rates in the diarrhea burden are consistent with the previously reported effects of lanreotide on octreotide rescue medication use, while the findings of a greater efficacy of lanreotide vs placebo in the quality-of-life domains represent a novel aspect in the benefits of lanreotide.

Trial registration

ClinicalTrials.gov identifier: NCT00774930.

Impact of neuroendocrine morphology on cancer outcomes and stage at diagnosis: a UK nationwide cohort study 2013-2015

BACKGROUND

The diagnosis of neuroendocrine neoplasms (NENs) is often delayed. This first UK population-based epidemiological study of NENs compares outcomes with non-NENs to identify any inequalities.

METHODS

Age-standardised incidence rate (ASR), 1-year overall survival, hazard ratios and standardised mortality rates (SMRs) were calculated for all malignant NENs diagnosed 2013-2015 from UK national Public Health records. Comparison with non-NENs assessed 1-year overall survival (1YS) and association between diagnosis at stage IV and morphology.

RESULTS

A total of 15,222 NENs were identified, with an ASR (2013-2015 combined) of 8.6 per 100,000 (95% CI 8.5-8.7); 4.6 per 100 000 (95% CI, 4.5-4.7) for gastro-entero-pancreatic (GEP) NENs. The 1YS was 75% (95% CI, 73.9-75.4) varying significantly by sex. Site and morphology were prognostic. NENs (predominantly small cell carcinomas) in the oesophagus, bladder, prostate, and female reproductive organs had a poorer outcome and were three times more likely to be diagnosed at stage IV than non-NENs.

CONCLUSION

Advanced stage at diagnosis with significantly poorer outcomes of some NENs compared with non-NENs at the same anatomical site, highlight the need for improved access to specialist services and targeted service improvement.

Unmet needs in the international neuroendocrine tumor (NET) community: Assessment of major gaps from the perspective of patients, patient advocates and NET health care professionals

Due to the increasing incidence and prevalence of neuroendocrine tumors (NETs), there is a need to assess any gaps in awareness and care. A survey was undertaken in 2017 to identify perceived unmet needs from the perspectives of patients/families, patient advocates and health care professionals (HCPs). The survey consisted of 33–37 questions (depending on type of respondent) across four areas: information, care, treatments and research. In total, 443 participants from 26 countries responded: 338 patients/families, 35 advocates and 70 HCPs. Perceived unmet needs regarding provision of information at diagnosis differed between groups. While 59% of HCPs believed they provided sufficient information, informational needs were mostly/fully met for only 30% of patients and 18% of advocates. Additionally, 91% of patients and 97% of advocates felt that patients had to search for information themselves. Availability of Gallium‐68‐Dotatate PET/CT scan was limited for the majority of patients (patients: 73%; advocates: 85%; HCP: 86%), as was access to treatments, particularly peptide receptor radionuclide therapy (patients: 42%; advocates: 95%; HCPs: 77%). All groups felt that standards of care, including psychological needs and diagnosis of mental health, were not fully met. Although about two‐thirds of patients were managed by a multidisciplinary team, 14% of patients reportedly did not have enough contact. All groups supported more patient involvement in research; patients and advocates prioritized improvement in diagnosis and HCPs focused on clinical trials. This survey revealed significant unmet needs but differing perceptions regarding these among the groups. There is a need for investigation and collaboration to improve standards of care for NET patients.

What's new?

Even though the incidence of neuroendocrine tumors (NETs) has been rising worldwide, the current management of patients varies considerably, potentially leaving many with suboptimal care. An international survey was carried out in 2017 to investigate unmet needs in the NET patient community. The survey revealed that patients perceive numerous unmet needs in key areas including provision of information, diagnostics and treatment access, care standards, and research involvement. While healthcare professionals were aware of these gaps, they generally underestimated their magnitude. Patients and healthcare professionals need to work together to improve the lives and prospects of the increasing numbers of patients.

Management of Diarrhea in Patients With Carcinoid Syndrome

Neuroendocrine tumors (NETs) arise from enterochromaffin cells found in neuroendocrine tissues, with most occurring in the gastrointestinal tract. The global incidence of NETs has increased in the past 15 years, likely due to better diagnostic methods. Small-bowel NETs are frequently associated with carcinoid syndrome (CS). Carcinoid syndrome diarrhea occurs in 80% of CS patients and poses a substantial symptomatic and economic burden. Patients with CS diarrhea frequently suffer from diarrhea and flushing and report corresponding impairment in quality of life, requiring substantial changes in daily activities and lifestyle. Treatment paradigms range from surgical debulking to liver-directed therapies to treatment with somatostatin analogs, nonspecific anti-diarrheal agents, and a tryptophan hydroxylase inhibitor. Other causes of diarrhea, including steatorrhea, short bowel syndrome, and bile acid malabsorption, should be considered in NET patients with refractory diarrhea. More therapeutic options are needed for symptomatic management of patients with NETs, and better understanding of the pathophysiology can empower clinicians with improved patient care.

Long-Acting Somatostatin Analogue Safety Monitoring Protocol for Outpatients With Neuroendocrine Tumors

Somatostatin analogues (SSAs) are widely used in the long-term treatment of neuroendocrine tumors (NETs) and have a relatively favorable safety profile. However, SSAs are associated with specific side effects that are important to monitor. Currently, there is no standardized safety monitoring protocol for health-care professionals to use as a reference when initiating patients on long-acting SSAs. With the expansion of SSA use from symptomatic control to include antiproliferative tumor treatment in patients with NETs, it is increasingly important that patients taking these medications are properly monitored. The purpose of this analysis was to develop a comprehensive, practical SSA safety monitoring protocol for patients with NETs in the outpatient setting. This strategy was based on side effect frequencies that were reported and the monitoring parameters used in influential clinical and safety trials. Based on our assessment, we consider monitoring gallbladder imaging, laboratory tests (including blood chemistry, thyroid-stimulating hormone, hemoglobin A1c, and stool studies), vital signs, and physical examinations as the most important parameters when evaluating the safety of long-term SSA therapy. Due to the frequency at which patients experienced diarrhea as a side effect in clinical trials, questions about urgency, frequency, timing, consistency, odor, and color of bowel movements should be asked as part of the follow-up visits every 6 months to help differentiate between drug-induced vs. disease-associated causes. This broad monitoring strategy for patients receiving long-term SSAs was developed specifically for patients with NETs; however, the use of this protocol could be expanded to other indications in the future.

Spotlight on telotristat ethyl for the treatment of carcinoid syndrome diarrhea: patient selection and reported outcomes

Neuroendocrine tumors (NETs) are rare cancers with an associated prolonged survival in some patients. A proportion of patients diagnosed with NETs will present with carcinoid syndrome symptoms, characterized by diarrhea, flushing and/or wheezing. This review summarizes the current treatment options for carcinoid syndrome, focusing on the latest novel treatment option, telotristat ethyl. In addition, information on patient-reported outcomes and impact of carcinoid syndrome on quality of life (QOL) and improvement of following treatment with telotristat ethyl are reviewed. This article also provides an overview of the current QOL questionnaires for patients with NETs and addresses unmet needs in this field of patient-reported outcomes.

Patterns of Symptoms Burden in Neuroendocrine Tumors: A Population-Based Analysis of Prospective Patient-Reported Outcomes

BACKGROUND

How to best support patients with neuroendocrine tumors (NETs) remains unclear. Improving quality of care requires an understanding of symptom trajectories. Objective validated assessments of symptoms burden over the course of disease are lacking. This study examined patterns and risk factors of symptom burden in NETs, using patient-reported outcomes.

SUBJECTS, MATERIALS, AND METHODS

A retrospective, population-based, observational cohort study of patients with NETs diagnosed from 2004 to 2015, who survived at least 1 year, was conducted. Prospectively collected patient-reported Edmonton Symptom Assessment System scores were linked to provincial administrative health data sets. Moderate-to-severe symptom scores were presented graphically for both the 1st year and 5 years following diagnosis. Multivariable Poisson regression identified factors associated with record of moderate-to-severe symptom scores during the 1st year after diagnosis.

RESULTS

Among 2,721 included patients, 7,719 symptom assessments were recorded over 5 years following diagnosis. Moderate-to-severe scores were most frequent for tiredness (40%-51%), well-being (37%-49%), and anxiety (30%-40%). The proportion of moderate-to-severe symptoms was stable over time. Proportion of moderate-to-severe anxiety decreased by 10% within 6 months of diagnosis, followed by stability thereafter. Changes were below 5% for other symptoms. Similar patterns were observed for the 1st year after diagnosis. Primary tumor site, metastatic disease, younger age, higher comorbidity burden, lower socioeconomic status, and receipt of therapy within 30 days of assessment were independently associated with higher risk of elevated symptom burden.

CONCLUSION

Patients with NETs have a high prevalence of moderate-to-severe patient-reported symptoms, with little change over time. Patients remain at risk of prolonged symptom burden following diagnosis, highlighting potential unmet needs. Combined with identified patient and disease factors associated with moderate-to-severe symptom scores, this information is important to support symptom management strategies to improve patient-centered care.

IMPLICATIONS FOR PRACTICE

This study used population-level, prospectively collected, validated, patient-reported outcome measures to appraise the symptoms burden and trajectory of patients with neuroendocrine tumors (NETs) after diagnosis. It is the largest and most detailed analysis of patient-reported symptoms for NETs. Patients with NETs present a high burden of symptoms at diagnosis that persists up to 5 years later, highlighting unmet needs. Early and comprehensive symptom screening and management programs are needed. This information should serve to devise pathways and policies to better support patients, evaluate supportive interventions, and assess the effectiveness of symptom management at the provider, institutional, and system levels.

Evidence-Based Policy in Practice: Management of Carcinoid Syndrome Diarrhea

Carcinoid syndrome causes substantial morbidity and reduces quality of life and survival. In a recent clinical trial, 97% of patients reported bowel movement-related issues, abdominal pain, flushing, and low energy. Combining somatostatin analogs with elotristat ethyl provides a new option for managing refractory CS symptoms. Health care providers should consider strategies that take advantage of approved dosing for patients with CS-related diarrhea.

Patient And Nurse Experience Of Using Somatostatin Analogues To Treat Gastroenteropancreatic Neuroendocrine Tumors: Results Of The Somatostatin Treatment Experience Trial (STREET)

PURPOSE

Evaluate patients' and nurses' experiences, including injection problem frequency, with the somatostatin analogues (SSAs) lanreotide autogel^® (Somatuline^® autogel^®, deep subcutaneous) and octreotide long-acting release (LAR) (Sandostatin^® LAR^®, intramuscular) when treating gastroenteropancreatic neuroendocrine tumors (GEP-NETs).

METHODS

An observational, cross-sectional study across 2 NET centers in Sweden. Questionnaires based on participants' most recent injection experience were sent to patients with GEP-NETs treated with octreotide or lanreotide, and to nurses administering these treatments. Nurses were identified via patients completing their questionnaires. Resource use was sourced from Swedish prescription registry records. The planned sample size was 200, based on an estimated proportion of 0.50 and ±7% precision.

RESULTS

119/156 patients (n=53, lanreotide; n=66, octreotide) and 43/53 nurses (n=22, lanreotide; n=21, octreotide) completed questionnaires. Despite smaller recruitment than planned, the endpoint precision was ±9% with 119 participants, and still considered reasonable. More octreotide-treated patients reported problems (18% vs none; P=0.001) and experienced moderate-to-high anxiety pre-injection (11% vs 2%). Patients had similar physical HRQoL scores overall (Short Form-12 mean composite scores: physical: 39.4 vs 37.6; mental: 50.7 vs 49.6). The mean number of lanreotide and octreotide doses dispensed per year were 11.1 and 12.6, respectively (P<0.05). In the lanreotide group, 28% self-injected, while 29% were not aware they could self-inject. In the octreotide group, 3% self-injected and 73% were unaware of the availability of an SSA for self-injection. Most patients (61%) felt well-informed about their disease and treatment. Nurses were generally experienced and felt confident and well-informed about giving SSA injections; however, only 12% felt well-informed about the disease and treatment.

CONCLUSION

Those treated with lanreotide reported fewer injection problems and experienced less pre-injection anxiety than those treated with octreotide. SSA choice did not appear to affect patients' HRQoL. Some patients treated with octreotide were unaware of an SSA with the flexibility of self-injection.

Investigating Nutrition-Related Complications and Quality of Life in Patients With Gastroenteropancreatic Neuroendocrine Tumors: Protocol for a Mixed-Methods Prospective Study

Background

Gastroenteropancreatic neuroendocrine tumors (GEP NETs) are a heterogeneous group of tumors with distinct effects on the body due to their potential to secrete hormones and peptides. The incidence and prevalence of GEP NETs in Australia are rising. During 2000-2006, the annual incidence was approximately 3.3 per 100,000 population. To date, there has been development of clinical practice and consensus guidelines for NETs covering best practice for diagnosis, treatment, and medical management; however, the supportive care needs and optimal nutritional management of patients affected by NETs remains underresearched, and evidence to guide clinical practice is lacking. While there is emerging research describing the extent of morbidity in different types of GEP NET patients, little is known about the experience of people affected by these tumors and how nutritional status is impacted by either diagnosis or treatment.

Objective

The objective of this study was to explore nutrition-related complications and quality of life of patients diagnosed with a GEP NET and to generate evidence to inform future research and development of nutrition screening and management practices.

Methods

Patients diagnosed with a GEP NET at two metropolitan recruitment sites will be invited to participate in a 6-month, mixed-methods longitudinal study. Participants recruited to the study will receive usual care and participate in data collection for the study at 4 time points (at recruitment and 2, 4, and 6 months postrecruitment). Study data will include nutritional status, body weight, fat-free mass, and patient-reported outcome measures (dietitian contact, disease-related symptom presence and severity, dietary habits, health-related quality of life, psychological morbidity, and financial impact). At recruitment and 6 months postrecruitment, complete nutrient testing, including relevant plasma vitamin levels, will also be undertaken. A purposive sample of participants will be invited to take part in semistructured interviews to explore the experience of living with a GEP NET and associated nutrition complications.

Results

Ethics approval has been obtained, and study recruitment and data collection are underway.

Conclusions

This study will provide the first in-depth, comprehensive description of nutritional issues in patients with GEP NETs. Results will advance the knowledge of nutritional issues faced by patients with GEP NETs and help inform the development of screening tools and clinical practice guidelines.

International Registered Report Identifier (IRRID)

DERR1-10.2196/11228

Delays and routes to diagnosis of neuroendocrine tumours

Background

Neuroendocrine tumours are uncommon tumours; there is often a long period between the onset of symptoms and diagnosis. This study aims to address the symptoms prior to diagnosis of people with known neuroendocrine tumours and also the involvement of healthcare providers prior to the diagnosis.

Methods

A web based survey was designed to cover two broad areas of patient symptoms and healthcare interactions prior to diagnosis. This was tested and adapted by patient and clinician input prior to distribution via Survey Monkey.

Results

The results demonstrated a median time from first symptom to diagnosis of 53.8 months. The most frequent initial symptoms were of pain, change in bowel habit and fatigue. 31% of respondents noted weight loss prior to diagnosis. 80% of respondents visited their GP regarding the symptoms a median of 11 times. 58% of respondents were referred to secondary care where they were seen a median 3 times. 30% presented acutely to A&E and this led to their diagnosis.

Conclusion

In conclusion, there is a long time from onset of symptoms to diagnosis in all types of NETs. This is despite many respondents having alarm symptoms at diagnosis. Further education and awareness regarding malignancy may help with earlier diagnosis.

Pre-existing Symptoms and Healthcare Utilization Prior to Diagnosis of Neuroendocrine Tumors: A SEER-Medicare Database Study

The incidence and prevalence of neuroendocrine tumors (NETs) are continually increasing. While it is known that NET symptoms often predate diagnosis, their prevalence and impact on resource utilization and costs are largely unknown. We identified 9,319 elderly patients diagnosed with NETs between 1/2003 and 12/2011 from the Surveillance, Epidemiology and End Results (SEER)-Medicare. We examined the patients’ conditions potentially associated with NET, resource utilization and costs during the year before diagnosis. We found that NET patients were more likely to have diagnoses of hypertension (63.8% vs. 53.3%), abdominal pain (22.2% vs. 7.6%), heart failure (11.7% vs. 8.0%), diarrhea (5.8% vs. 1.8%), peripheral edema (5.4% vs. 3.8%) and irritable bowel syndrome (1.2% vs. 0.5%) compared to the non-cancer control group. They also had much higher resource utilization including number of outpatient visits (mean: 22.1 vs. 17.2), percentage with ER visits (20.9% vs. 11.6%), and hospitalizations (28.4% vs. 17.0%). Similarly, NET patients incurred significantly higher total (mean: $14602 vs. $9464), outpatient (mean: $5987 vs. $4253), and inpatient costs (mean: $8615 vs. $5211). This first population-based study on the pre-diagnosis symptoms and healthcare utilization found that NET patients were more likely to have certain conditions and incur higher resource utilizations and costs.

A five-compartment biokinetic model for 90 Y-DOTATOC therapy

PURPOSE

Neuroendocrine tumors (NETs) are now routinely treated by radiopeptide targeted therapy using somatostatin receptor-binding peptides such as ⁹⁰ Y- and ¹⁷⁷ Lu-DOTATOC. The objective of this work was to develop a biokinetics model of ⁹⁰ Y labelled DOTATOC, which is applied in the therapy of NETs to estimate doses in kidney and tumor.

METHODS

A multi-compartment model described by two sets of differential equations, one set for the actual 30-min infusion and the other set for the post-infusion period was developed and activities were measured by liquid scintillation counting in blood (compartment 1) and the urine (compartment 3). The inter-compartment transfer coefficients, λ_ij , were varied to yield the best fit of the calculated to the measured time-activity data and the ⁹⁰ Y-DOTATOC time-activity data in the five-compartments comprising the human body were thus determined. The resulting time-activity curves were integrated over the interval from 0 to 72 h post administration to obtain the number of radioactive decays in each compartment and, in case of the kidneys and tumor, then multiplied by the self-dose ⁹⁰ Y beta particle absorbed fraction, determined by Monte Carlo (MC) simulation, the kidney and tumor absorbed doses.

RESULTS

Transfer coefficients λ_ij , were determined for five-compartments for all patients. Time- activity curves of ⁹⁰ Y-DOTATOC in 14 patients were determined, and two typical ones are shown graphically. Absorbed doses in the tumor and kidneys, obtained by the developed method, were determined. The mean absorbed dose in a kidney per unit of administered activity is 1.43 mGy/MBq (range 0.73-2.42 mGy/MBq). The tumor dose was determined as 30.94 mGy/MBq (range 20.05-42.31 mGy/MBq).

CONCLUSION

Analytical solution of a biokinetic model for ⁹⁰ Y-DOTATOC therapy enabled determination of the transfer coefficients and derivation of time-activity curves and kidney and tumor absorbed doses for 14 treated patients. The model can be applied to other radionuclides where elimination is predominantly through urine, which is often the case in radiopharmaceuticals.

Carcinoid syndrome: update on the pathophysiology and treatment

Approximately 30-40% of patients with well-differentiated neuroendocrine tumors present with carcinoid syndrome, which is a paraneoplastic syndrome associated with the secretion of several humoral factors. Carcinoid syndrome significantly and negatively affects patients' quality of life; increases costs compared with the costs of nonfunctioning neuroendocrine tumors; and results in changes in patients' lifestyle, such as diet, work, physical activity and social life. For several decades, patients with neuroendocrine tumors and carcinoid syndrome have been treated with somatostatin analogues as the first-line treatment. While these agents provide significant relief from carcinoid syndrome symptoms, there is inevitable clinical progression, and new therapeutic interventions are needed. More than 40 substances have been identified as being potentially related to carcinoid syndrome; however, their individual contributions in triggering different carcinoid symptoms or complications, such as carcinoid heart disease, remain unclear. These substances include serotonin (5-HT), which appears to be the primary marker associated with the syndrome, as well as histamine, kallikrein, prostaglandins, and tachykinins. Given the complexity involving the origin, diagnosis and management of patients with carcinoid syndrome, we have undertaken a comprehensive review to update information about the pathophysiology, diagnostic tools and treatment sequence of this syndrome, which currently comprises a multidisciplinary approach.

Health-Related Quality of Life in Patients With Progressive Midgut Neuroendocrine Tumors Treated With 177Lu-Dotatate in the Phase III NETTER-1 Trial

Purpose Neuroendocrine tumor (NET) progression is associated with deterioration in quality of life (QoL). We assessed the impact of ¹⁷⁷Lu-Dotatate treatment on time to deterioration in health-related QoL. Methods The NETTER-1 trial is an international phase III study in patients with midgut NETs. Patients were randomly assigned to treatment with ¹⁷⁷Lu-Dotatate versus high-dose octreotide. European Organisation for Research and Treatment of Cancer quality-of-life questionnaires QLQ C-30 and G.I.NET-21 were assessed during the trial to determine the impact of treatment on health-related QoL. Patients completed the questionnaires at baseline and every 12 weeks until tumor progression. QoL scores were converted to a 100-point scale according to European Organisation for Research and Treatment of Cancer instructions, and individual changes from baseline scores were assessed. Time to QoL deterioration (TTD) was defined as the time from random assignment to the first QoL deterioration ≥ 10 points for each patient in the corresponding domain scale. All analyses were conducted on the intention-to-treat population. Patients with no deterioration were censored at the last QoL assessment date. Results TTD was significantly longer in the ¹⁷⁷Lu-Dotatate arm (n = 117) versus the control arm (n = 114) for the following domains: global health status (hazard ratio [HR], 0.406), physical functioning (HR, 0.518), role functioning (HR, 0.580), fatigue (HR, 0.621), pain (HR, 0.566), diarrhea (HR, 0.473), disease-related worries (HR, 0.572), and body image (HR, 0.425). Differences in median TTD were clinically significant in several domains: 28.8 months versus 6.1 months for global health status, and 25.2 months versus 11.5 months for physical functioning. Conclusion This analysis from the NETTER-1 phase III study demonstrates that, in addition to improving progression-free survival, ¹⁷⁷Lu-Dotatate provides a significant QoL benefit for patients with progressive midgut NETs compared with high-dose octreotide.

Outcomes of Cytoreductive Surgery for Metastatic Low-Grade Neuroendocrine Tumors in the Setting of Extrahepatic Metastases

BACKGROUND

Neuroendocrine tumors (NETs) have a uniquely indolent biology. Management focuses on tumor and hormonal burden reduction. Data on cytoreduction with extrahepatic disease remain limited.

OBJECTIVE

We sought to define the outcomes of cytoreduction for metastatic NETs with extrahepatic metastases.

METHODS

Patients undergoing cytoreductive surgery for grade 1 or 2 NETs with extrahepatic metastases (with or without intrahepatic disease) were identified from an institutional database (2003-2014). Primary outcomes included postoperative hormonal response (> 50% urinary 5HIAA decrease), progression-free survival (PFS) and overall survival (OS), while secondary outcomes were 30-day postoperative major morbidity (Clavien grade III-V), mortality, and length of stay.

RESULTS

Fifty-five patients were identified (median age 59.3 years, 80% small bowel primaries, 56.4% grade 1); 87% of patients presented with combined intra- and extrahepatic metastases. Resection most commonly included the liver (87%), small bowel (22%), mesenteric (25%) and retroperitoneal (11%) lymph nodes, and peritoneum (7%). Thirty-day major morbidity (Clavien III-V) was 18%, with 3.6% mortality, and median length of stay was 7 days [interquartile range (IQR) 5-9]. Liver embolization was performed in 31% of patients after surgery, at a median of 23 months following surgery. Overall, postoperative hormonal response occurred in 70% of patients. At median follow-up of 37 months (IQR range 22-93), 42 (76%) patients were alive and 23 (41.8%) had progressed. Five-year OS was 77% and 5-year PFS was 51%.

CONCLUSION

Patients undergoing cytoreduction of metastatic well-differentiated NET in the setting of extrahepatic metastatic disease experience good tumoral control with favorable PFS and OS. Cytoreductive surgery can be safely included in the therapeutic armamentarium for NET with extrahepatic metastases.

Developments in the treatment of carcinoid syndrome - impact of telotristat

Carcinoid syndrome occurs in 20% of patients with neuroendocrine tumors, and serotonin is usually the main causative hormonal peptide. Carcinoid syndrome, and particularly diarrhea, can significantly impact patients' quality of life. Somatostatin analogs (SSAs) are the mainstay of treatment, but are unable to ameliorate symptoms in all patients due to dose-limiting side effects and tachyphylaxis. Telotristat is a novel oral inhibitor of tryptophan hydroxylase, which is the rate-limiting enzyme in serotonin synthesis. A Phase III placebo-controlled trial of telotristat etiprate (orally at 250 mg three times a day) showed a significant decrease in the frequency of bowel motions in treated patients with diarrhea from carcinoid syndrome. The main side effects were gastrointestinal symptoms, deranged liver function tests and depression. Treatment with 500 mg three times a day also decreased stool frequency, but was associated with more nausea and mood disturbances. Telotristat, therefore, represents a valuable option in the management of carcinoid syndrome diarrhea refractory to SSAs, and the US Food and Drugs administration approved its use for this indication in March 2017. However, its role in somatostatin-naïve patients and in the treatment of other carcinoid syndrome symptoms (flushing and abdominal pain) remains unknown. Further research should focus on these issues as well as the safety of continuing telotristat in the context of other systemic antineoplastic therapies.

Patient quality of life and prognosis in multiple endocrine neoplasia type 2

Multiple endocrine neoplasia type 2 (MEN2) refers to the autosomal-dominant neuroendocrine tumour syndromes, MEN type 2A (MEN2A) and MEN type 2B (MEN2B). They are typified by the development of medullary thyroid cancer (MTC), phaeochromocytoma and parathyroid hyperplasia in MEN2A and MTC, phaeochromocytomas, ganglioneuromatosis and skeletal abnormalities in MEN2B. The aggressiveness of MTC is variable according to genotype, and although it is still the major cause of mortality in both conditions, prognosis has improved dramatically in those diagnosed and treated at a young age thanks to predictive genetic testing. Nevertheless, metastatic MTC, ganglioneuromatosis and a variety of other negative clinical and psychosocial impacts on quality of life and/or prognosis in MEN2 persist. In the absence, at the time of writing, of any large-scale research into quality of life specifically in MEN2, this review includes data from patient surveys and anonymised patient anecdotes from the records of the Association for Multiple Endocrine Neoplasia Disorders (AMEND), for whom the authors work. We recommend that these patients are cared for only in centres of expertise able to provide expert diagnosis, treatment and continuity of care, including psychological and transition support. Only in this way can the clinical advances of the last two and half decades be built upon further to ensure that the care of these complex, lifelong patients can be considered truly holistic.

Perspectives of patients and physicians about neuroendocrine tumors. A qualitative study

Purpose

Gastrointestinal neuroendocrine tumors (NETs) are rare, complex to manage, and often have a chronic course. Qualitative methods are a tool of choice for focusing on patients' and physicians’ points of view especially when dealing with a complex and rare disease. Nonetheless, they remain undeveloped in research related to NETs. This study aimed to explore the experience of NETs among both patients and their physicians and to cross their perspectives for the purpose of finding pathways to improving care.

Results

Our analysis found two themes: (1) the questions raised by this disease, and (2) the complex experience of this singular disease. Our findings underlined the experience of confusion found among patients regarding the patient's unusual somatic experience and around the question of vocabulary, i.e. the naming of the disease and the semantic field of severity in the medical discourse.

Conclusion

Means for reducing the confusion that patients experience in this disease are needed. The explanations that the physician offers to the patient must clarify the issues related to NETs. We therefore propose a statement that all physicians can use to support patients diagnosed with neuroendocrine tumors to clear up potential confusion.

Methods

We conducted a qualitative study, based on 40 semi-structured interviews, in a specialized department of gastro-pancreatology. Participants, purposively selected until data saturation, came from two different sub-samples: (i) patients with a metastatic NETs (N = 20) and (ii) their referring physicians (N = 10). The data were examined by thematic analysis.

Presenting Symptoms and Delay in Diagnosis of Gastrointestinal and Pancreatic Neuroendocrine Tumours

The gastrointestinal tract and pancreas are common primary sites for neuroendocrine tumours (NETs). Patients often report a long duration of non-specific symptoms in the year prior to diagnosis. The aims of this study were, firstly, to establish pre-diagnosis patterns of symptoms, and secondly, to determine the time from onset of symptoms to NET diagnosis and understand the interaction with primary and secondary healthcare providers. A survey was designed on a web-based survey platform with the focus on patient symptoms prior to diagnosis and a screen for functional diarrhoea (Rome III criteria [C4]). A total of 303 responses were received. The median duration from the time of first symptoms to diagnosis was 36 months for small bowel NETs and 24 months for pancreatic NETs. Common first symptoms were pain (36%), flushing (24%), and diarrhoea (24%); 29% of small bowel NET respondents were given an initial diagnosis of irritable bowel syndrome. Dyspepsia was the second most common initial incorrect diagnosis. Respondents saw their GP 5 times over a median 18-month period for their symptoms; 31% of patients were diagnosed following unplanned emergency admission. In conclusion, this survey demonstrates a median time to diagnosis of 36 months for patients with small bowel NETs. Incorrect initial diagnosis appears to be very common, with a high number of attendances in primary and secondary care prior to a correct diagnosis being made. An earlier diagnosis may improve patients' quality of life and possible survival.

Systemic therapy in incurable gastroenteropancreatic neuroendocrine tumours: a clinical practice guideline

PURPOSE

The purpose of the present review was to determine which antineoplastic systemic therapy is most effective in improving clinical outcomes for patients with incurable gastroenteropancreatic neuroendocrine tumours (nets).

METHODS

A systematic search (2008-2016) of the literature in the medline and embase databases and the Cochrane Database of Systematic Reviews was conducted; abstracts from the American Society of Clinical Oncology, the American Society of Clinical Oncology Gastrointestinal Cancers Symposium, the European Society for Medical Oncology, the European Cancer Congress, the European Neuroendocrine Tumor Society, and the North American Neuroendocrine Tumor Society were reviewed. Draft recommendations were created, and a comprehensive review process was undertaken. Outcomes-including progression-free survival (pfs), overall survival, objective response rate, adverse events, and quality of life-were extracted from each of the studies.

RESULTS

Eleven randomized controlled trials (rcts), sixteen nonrandomized prospective studies, and thirteen retrospective studies met the inclusion criteria.

CONCLUSIONS

Patients with well-or moderately-differentiated pancreatic nets (pnets) should receive targeted therapy (that is, everolimus or sunitinib), and patients with non-pnets should be offered either targeted therapy (that is, everolimus) or somatostatin analogues (ssas-that is, octreotide long-acting release or lanreotide). Evidence from two phase iii trials demonstrated a significant pfs benefit for patients with pnets. For patients with non-pnets, the evidence comes from subgroup analyses of rcts, as well as from a planned interim analysis. Although the evidence has limitations, the rarity of the disease, coupled with the difficulty of conducting methodologically sound trials in the affected population, means that treatment decisions have to make use of the best available evidence. Because of insufficient evidence for both pnets and non-pnets, no evidence-based recommendation can be made for or against other types of targeted therapy, other ssas, chemotherapy, or combination therapy.