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West Jerusalem, Israel

Adelman D.T.,Northwestern University | Burgess A.,The Christie | Davies P.R.,Neuroendocrine Tumor Unit
Medical Devices: Evidence and Research | Year: 2012

The somatostatin analogs (SSAs) lanreotide Autogel/Depot and octreotide long- acting release are used to treat acromegaly and neuroendocrine tumors. The present study evaluated opinions on SSA injection devices, including a recently approved lanreotide new device (lanreotide-ND), among nurses in Europe and the USA. Nurses injecting SSAs for at least three patients per year (n = 77) were interviewed regarding SSA devices. Device attributes were rated via questionnaire; nurses were then timed administering test injections with lanreotide-ND and octreotide long-acting release. The most important delivery system attributes were easy/convenient preparation and injection (ranked in the top five by 70% of nurses), low clogging risk (58%), and high product efficacy (55%). Compared with the octreotide long-acting release device, lanreotide-ND scored higher on 15/16 attributes, had shorter mean preparation and administration time (329 versus 66 seconds, respectively; P≤ 0.01) and a higher overall preference score (70 versus 114, respectively; P≤ 0.01). The five most important lanreotide-ND attributes were: prefilled device, confidence a full dose was delivered, low clogging risk, easy/convenient preparation and injection, and fast administration. These device features could lead to improvements in clinical practice and benefit patients/caregivers who administer SSAs at home. © 2012 Adelman et al, publisher and licensee Dove Medical Press Ltd.

Li S.-C.,Uppsala University | Khan M.,Neuroendocrine Tumor Unit | Caplin M.,Neuroendocrine Tumor Unit | Meyer T.,University College London | And 4 more authors.
PLoS ONE | Year: 2015

We previously detected and investigated nine altered microRNAs in small intestinal neuroendocrine tumor (SI-NET) tissues at different stages of disease. The aims of this study are to: 1) analyze whether SI-NET tissue microRNAs can be also detected in patient serum samples, 2) investigate a potential somatostatin analogs (SSAs) role on microRNA levels regulation in SSA-treated patient samples and 3) elucidate whether the serum microRNA levels in samples collected in different hospitals are predictable and steady. Our results show that tissue microRNAs are detectable in patient serum samples, and miR-96, -182, -183, -196a and -200a levels are lower in SI-NET untreated patients than in SSA-treated patients at all different stages. Conversely, miR-31, -129-5p, -133a and -215 levels do not show any difference in untreated SI-NET patients and SSA-treated patients at all different stages. Our findings also show that miR-200a exhibits an atypical behavior with high levels in both untreated and SSA-treated patients at liver metastasis stage, and unequivocally never at the earlier stages. Serum samples collected in two hospitals keep alike microRNA level pattern, elucidating that the results are not dependent on samples handling. In conclusion, SI-NET tissue microRNAs are always detectable in untreated and SSA-treated patient serum samples, SSAs play an unknown role in eliciting SSA-treated patients' microRNA levels higher than in untreated patients, and this study enlightens that miR-200a might be involved in the liver metastasis during SI-NET progression. © 2015 Li et al.

Wild D.,University College London | Wild D.,University Hospital Freiburg | Christ E.,University Hospital of Berne | Caplin M.E.,Neuroendocrine Tumor Unit | And 9 more authors.
Journal of Nuclear Medicine | Year: 2011

Glucagon-like peptide-1 (GLP-1) receptor imaging is superior to somatostatin receptor subtype 2 (sst2) imaging in localizing benign insulinomas. Here, the role of GLP-1 and sst2 receptor imaging in the management of malignant insulinoma patients was investigated. Methods: Eleven patients with malignant insulinoma were prospectively included. 111In-[Lys40(Ahx-diethylenetriaminepentaacetic acid [DTPA])NH2]-exendin-4 SPECT/CT, 68Ga- DOTATATE PET/CT, and in vitro receptor autoradiography were performed to assess the receptor status and to evaluate the detection rate. Results: GLP-1 receptor targeting was positive in 4 of 11 patients, and sst2 receptor expression was positive in 8 of 11. In only 1 patient were both receptors expressed. In 1 patient, GLP-1 receptor imaging was the only method that successfully localized the primary tumor in the pancreas. In 3 patients with sst2-expressing tumors, DOTATATE radiotherapy was effectively applied. Conclusion: As opposed to benign insulinomas, malignant insulinomas often lack GLP-1 receptors. Conversely, malignant insulinomas often express sst2, which can be targeted therapeutically. Copyright © 2011 by the Society of Nuclear Medicine, Inc.

Rossi R.E.,Neuroendocrine Tumor Unit | Rossi R.E.,University of Milan | Luong T.-V.,Royal Free Hospital | Caplin M.E.,Neuroendocrine Tumor Unit | And 6 more authors.
Surgical Oncology | Year: 2015

Background Appendiceal Goblet cell tumors (GCTs) are clinically more aggressive, and have a worse outcome than midgut neuroendocrine tumors (mNETs). Guidelines for management of GCTs are limited. Methods A retrospective case-study analysis was performed in patients with a diagnosis of GCT, confirmed on histological review. Patients were evaluated clinically, biochemically, and radiologically. Results 48 patients were identified (TNM stage I-II: 27, stage III: 15, stage IV: 6). Median follow-up was 44 months and was complete in all patients. 68.8% presented with acute appendicitis. 44/48 patients had initial appendectomy, followed by prophylactic right hemicolectomy in 41. 10/48 patients had recurrent disease [median time to recurrence 28 months (range 4-159)]. Of those, 9 received systemic chemotherapy (FOLFOX/FOLFIRI), which was also given in 5/48 patients with disseminated disease at diagnosis. Partial response, stable disease and disease progression was noted in 22%, 22% and 56%, respectively. Adjuvant chemotherapy was also administered in 9/48 patients with stage III disease after right hemicolectomy, however in 3/9 the disease recurred. Median progression/disease-free-survival was 44 months (range 3-159) and overall 5-year survival rate was 41.6%. Conclusions The clinical behaviour of GCTs is more similar to colorectal adenocarcinomas than to NETs. A prophylactic right hemicolectomy is recommended to reduce the risk of recurrence. Systemic chemotherapy, using colorectal adenocarcinoma regimens, is indicated for advanced or recurrent disease and has encouraging results. Prospective studies are needed to define the role of adjuvant chemotherapy and the optimal chemotherapy regimen. © 2015 Elsevier Ltd. All rights reserved.

Grozinsky-Glasberg S.,Neuroendocrine Tumor Unit | Alexandraki K.I.,National and Kapodistrian University of Athens | Barak D.,Neuroendocrine Tumor Unit | Doviner V.,Hebrew University of Jerusalem | And 3 more authors.
Neuroendocrinology | Year: 2013

We evaluated the latest pathological criteria for completion right hemicolectomy (RHC) in patients with appendiceal neuroendocrine tumors (ANETs) with emphasis on the size of the primary tumor. Data of 28 consecutive patients who underwent RHC for ANETs in three tertiary hospitals were reviewed retrospectively to assess the indications for completion RHC. 10/28 patients were found to have residual disease (36%). In 8/28 patients (29%), the tumor diameter was <1 cm (mean 0.7 ± 0.2 cm, range 0.5-0.9 cm); the indications for RHC included: tumor presence in surgical margins (1 patient), extensive mesoappendiceal invasion (EMI) (1 patient), vascular invasion (VI) (3 patients), Ki-67 ≥2% (3 patients); residual disease was present in 1 patient (3.5%). In 13/28 patients (46%), the tumor diameter was ≥1 and <2 cm (mean 1.30 ± 0.2 cm, range 1.0-1.8 cm); the indications for RHC were: EMI (2 patients), VI (2 patients), Ki-67 ≥2% (2 patients); residual disease was present in 5 patients (18%). In 7/28 patients (25%), the tumor diameter was ≥2 cm (mean 2.5 ± 0.7 cm, range 2.0-4.0 cm). In this final subgroup, RHC was an accepted practice irrespective of other pathologic findings: the tumor was present in surgical margins in 2 patients, in 5 patients VI was demonstrated, and Ki-67 ≥2% was found in 5 patients; residual disease was present in 4 patients (14%). Using the latest European Neuroendocrine Tumor Society criteria for RHC, residual disease may be missed in 18% of ANET patients. Copyright © 2012 S. Karger AG, Basel.

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