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In the CLARINET study, lanreotide Autogel (depot in USA) significantly prolonged progression-free survival (PFS) in patients with metastatic pancreatic/intestinal neuroendocrine tumours (NETs). We report long-term safety and additional efficacy data from the open-label extension (OLE). Patients with metastatic grade 1/2 (Ki-67 ≤10%) non-functioning NET and documented baseline tumour-progression status received lanreotide Autogel 120 mg (n=101) or placebo (n=103) for 96 weeks or until death/progressive disease (PD) in CLARINET study. Patients with stable disease (SD) at core study end (lanreotide/placebo) or PD (placebo only) continued or switched to lanreotide in the OLE. In total, 88 patients (previously: lanreotide, n=41; placebo, n=47) participated: 38% had pancreatic, 39% midgut and 23% other/unknown primary tumours. Patients continuing lanreotide reported fewer adverse events (AEs) (all and treatment-related) during OLE than core study. Placebo-to-lanreotide switch patients reported similar AE rates in OLE and core studies, except more diarrhoea was considered treatment-related in OLE (overall diarrhoea unchanged). Median lanreotide PFS (core study randomisation to PD in core/OLE; n=101) was 32.8 months (95% CI: 30.9, 68.0). A sensitivity analysis, addressing potential selection bias by assuming that patients with SD on lanreotide in the core study and not entering the OLE (n=13) had PD 24 weeks after last core assessment, found median PFS remaining consistent: 30.8 months (95% CI: 30.0, 31.3). Median time to further PD after placebo-to-lanreotide switch (n=32) was 14.0 months (10.1; not reached). This OLE study suggests long-term treatment with lanreotide Autogel 120 mg maintained favourable safety/tolerability. CLARINET OLE data also provide new evidence of lanreotide anti-tumour benefits in indolent and progressive pancreatic/intestinal NETs.

Edda Gomez-Panzani,1 Stephen Chang,1 Joaquim Ramis,2 Michelle M Landolfi,1 Bert Bakker11Ipsen Biopharmaceuticals, Inc, Basking Ridge, New Jersey, USA; 2Ipsen Innovation SAS, Pharmacokinetic and Drug Metabolism, Les Ulis, FranceObjective: Lanreotide depot is a long-acting somatostatin receptor ligand injected deep subcutaneously every 4 weeks for the treatment of acromegaly. The aim of the presented studies was to establish whether lanreotide depot, administered to patients with acromegaly at an extended dosing interval of 6 or 8 weeks, is effective in maintaining appropriate serum growth hormone (GH) and insulin-like growth factor-1 (IGF-1) levels, with acceptable tolerability.Methods: Two studies were conducted. Study B1 compared lanreotide depot 120 mg (every 4, 6, or 8 weeks) with lanreotide microparticle formulation 30 mg (every 7, 10, or 14 days) in 98 patients who had a GH level of ≤2.5 ng/mL and normalized IGF-1. Study B2 evaluated lanreotide depot 120 mg administered to 64 patients every 8 weeks, after which the dosing interval was adjusted based on GH levels.Results: Mean lanreotide trough serum concentrations at steady state for all dosing intervals were >1.13 ng/mL, shown to achieve a GH level of ≤2.5 ng/mL. In Study B1, following treatment with lanreotide depot given every 6 or 8 weeks, 87.5% and 93.9% of patients, respectively, had normalized GH, whereas 83.3% and 88.5% of patients, respectively, had both normalized GH and IGF-1. In Study B2, 88.9% had normalized GH and 42.9% of patients had normalized GH and IGF-1 following lanreotide depot every 8 weeks. Gastrointestinal disorders, generally mild/moderate in severity, were the most common adverse events.Conclusion: In the studies presented, lanreotide depot 120 mg every 4, 6, or 8 weeks provided effective hormonal control with acceptable safety. An extended dosing interval is a feasible approach for patients adequately controlled with lanreotide depot 60 or 90 mg every 4 weeks.Keywords: growth hormone, insulin-like growth factor-1, pharmacokinetics, pharmacodynamics

Aim: QoL is an important consideration for CS treatment. This analysis evaluated QoL in GEP-NET patients treated for CS in the ELECT study. Methods: ELECT was a 16-week, randomised, double-blind (DB) phase III study (NCT00774930). Patients with GEP-NETs and a history of CS were treated with LAN 120 mg (n = 59) or placebo (n = 56) every 4 weeks. It was followed by 32-week and ≥2-year open-label extensions (OLEs). The primary endpoint was % of days of rescue medication use (SC octreotide) during DB study. Safety evaluations focused on adverse events (AEs). QoL was assessed using the EORTC QLQ-C30 and the EORTC QLQ-GI.NET21. Scores for global health status score (QLQ-C30) and endocrine and gastrointestinal subscales (QLQ-GI.NET21) were secondary endpoints; other scores were exploratory. Results: Mean [95% CI] % of days of rescue medication use was significantly lower with LAN (34% [25, 42%]) than placebo (49% [40, 57%]); difference –15% [–27, –3%], p = 0.02. Treatment-related AEs occurred in 15 (26%) LAN vs. 11 (19%) placebo patients: most common AEs were gastrointestinal. The global health status score (QLQ-C30) remained similar after 12 weeks of DB treatment with LAN and placebo. Treatment differences in endocrine and gastrointestinal subscale scores are shown in the table. For all functional scales of the QLQ-C30, scores remained stable/slightly improved in the LAN group, while there were small deteriorations in the placebo group; however CIs were wide. For the other subscales of the QLQ-GI.NET21, changes in scores were similar in both treatment groups. Conclusions: LAN 120 mg treatment for CS symptoms was not associated with a deterioration in QoL in GEP-NET patients. In fact, despite the relatively short duration of the study, there was evidence of initial improvements in some aspects of QoL. Results of QoL scores in OLE may provides more information. Table: Effect of LAN on QoL secondary endpoints. Values are mean (SD) unless otherwise stated. P-value tested at a significance level of 0.05. A hierarchical testing procedure was applied for secondary endpoints. Data shown are for the transformed scores, which can range from 0 to 100. A higher transformed score for global health status represents a better QoL. A higher transformed score for Endocrine and GI symptoms represents a higher level of symptomatology/problems Lanreotide Autogel Placebo LS mean treatment difference in change from baseline [95% CI] p-value QLQ-C30 Global health status/QoL Baseline 59.89 (20.15) [n = 59] 62.58 (20.28) [n = 55] 4.05 [–2.09, 10.20] 0.1931 Week 12 64.93 (19.37) [n = 48] 61.19 (18.07) [n = 35] 4.05 [–2.09, 10.20] 0.1931 QLQ-GI.NET21 Endocrine symptoms Baseline 25.89 (22.83) [n = 59] 33.54 (23.92) [n = 53] –7.04 [–14.80, 0.73] 0.0750 Week 12 18.06 (20.06) [n = 48] 29.84 (22.51) [n = 35] –7.04 [–14.80, 0.73] 0.0750 QLQ-GI.NET21 Gastrointestinal symptoms Baseline 22.40 (16.95) [n = 59] 24.84 (20.09) [n = 53] –4.68 [–9.63, 0.26] 0.0632 Week 12 17.64 (14.32) [n = 48] 23.62 (15.45) [n = 35] –4.68 [–9.63, 0.26] 0.0632 Disclosure: E. Gomez-Panzani: Ipsen: employee; A.I. Vinik: Ipsen: Research grant, advisory board member; E.M. Wolin: Research grant from Ipsen. Advisory board member for Ipsen, Novartis and Celgene; H. Audry: Received consulting fee (contract statistician) from Ipsen.

Aim: QoL in patients with gastroenteropancreatic-NETs can be affected by the symptom burden, but also treatment efficacy and safety. To better evaluate this, the EORTC developed a NET-specific QoL questionnaire (QLQ-GI.NET21), to be used in combination with its more generic questionnaire, EORTC QLQ-C30. Here, we examine the impact of LAN vs. placebo on QoL from the CLARINET study. Methods: CLARINET was a 96-week randomized double-blind phase III study, in which patients with well/moderately differentiated, non-functioning EP-NETs were treated with LAN 120 mg (n = 101) or placebo (n = 103) deep SC injections every 4 weeks (NCT00353496). The primary endpoint was progression-free survival (PFS). Safety was a key secondary endpoint. QoL (also a secondary endpoint) was assessed at each study visit using the EORTC QLQ-C30 and the EORTC QLQ-GI.NET21. Results: LAN significantly prolonged PFS vs. placebo (stratified log rank, p = 0.0002; hazard ratio 0.47 [95% CI: 0.30, 0.73]). Treatment-related adverse events (AEs) occurred in 50% of patients in the LAN group vs. 28% in the placebo group. Gastrointestinal disorders were the most common AEs (37% vs. 19%). The QLQ-C30 global health status scores and the QLQ-GI.NET21 endocrine and gastrointestinal subscale scores were similar in the two treatment groups at baseline and throughout treatment, though inter-individual variation was high (Table). Results for the other subscale scores of the QLQ-C30 and QLQ-GI.NET21 questionnaires were also similar between LAN and placebo. Conclusions: Overall, patients on LAN 120 mg had a significantly improved PFS and a good safety/tolerability profile that did not compromise patients' QoL vs. placebo. Further analyses are ongoing to evaluate QoL based on patient characteristics and treatment response. Table: Effect of LAN treatment on patients' QoL. Values are mean (SD); LVA, last post-baseline value available Data shown are for the transformed scores, which can range from 0 to 100. A higher transformed score for global health status represents a better QoL. A higher transformed score for Endocrine and GI symptoms represents a higher level of symptomatology/problems Baseline Week 48 Week 96 LVA QLQ-C30 Global health status/QoL LAN 70.2 (19.9) [n = 98] 70.9 (17.3) [n = 71] 66.4 (22.1) [n = 57] 64.5 (23.2) [n = 98] Placebo 73.6 (19.6) [n = 99] 72.0 (14.9) [n = 59] 70.1 (22.2) [n = 34] 67.0 (22.4) [n = 102] QLQ-GI.NET21 Endocrine symptoms LAN 10.9 (15.0) [n = 98] 11.0 (15.5) [n = 71] 11.1 (15.1) [n = 56] 11.7 (14.9) [n = 97] Placebo 12.0 (16.9) [n = 98] 13.2 (18.0 [n = 48] 11.8 (11.3) [n = 34] 13.9 (19.0) [n = 102] QLQ-GI.NET21 Gastrointestinal symptoms LAN 17.1 (16.4) [n = 98] 19.9 (17.6) [n = 71] 15.3 (13.8) [n = 56] 18.2 (16.5) [n = 97] Placebo 18.3 (18.0) [n = 98] 16.0 (14.3) [n = 58] 17.4 (17.3) [n = 34] 19.8 (18.5) [n = 102] Disclosure: P. Ruszniewski: Ipsen: Consultant/advisory role; honoraria; research funding; partner is Ipsen employee. Novartis: honoraria and research funding; M. Caplin: IPSEN: honoraria for consultant/advisory role. NOVARTIS: Consulting fee, Advisory Committees or Review Panels; LEXICON: Consulting fee, Advisory Committees or Review Panel; M. Pavel: Ipsen: Consulting & Speaker role fee. Pfizer, Inc.: Consulting & Speaker role fee. Novartis Pharmaceuticals: Consulting & Speaker role fee, research funding. Lexicon Pharmaceuticals, Inc.: Consulting & Speaker role fee; J. Cwikla: Ipsen: Research Funding; A. Phan: Ipsen: Research Funding; M. Raderer: Speaker fee from: Ipsen, Novartis Pharmaceuticals, Roche Pharmaceuticals, Pfizer, Inc., Bayer, Inc., Celgene; G. Cadiot: Ipsen: Consultant and Speaker fee. Novartis Pharmaceuticals: Consultant and Speaker fee. Keocyt: Consultant and Speaker fee; G. Rindi: Ipsen: Consultant and Speaker fee. Novartis Pharmaceuticals: Consultant and Speaker fee. Pfizer, Inc.: Consultant and Speaker fee. Advanced Accelerator Applications: Consultant fee; A. Langley: Ipsen: Consultant fee; J. Blumberg: Ipsen: employee; E. Gomez-Panzani: Ipsen: employee. All other authors have declared no conflicts of interest.