Safety and IGF-1 levels with once daily oral sst2 agonist paltusotine (CRN00808) in acromegaly patients previously treated with peptide long-acting somatostatin receptor ligands: Initial data from the open label ACROBAT Edge phase 2 study

2020 ◽  
Author(s):  
Miklos Toth ◽  
Murray Gordon ◽  
Mirjana Doknic ◽  
Emese Mezosi ◽  
Harpal Randeva ◽  
...  
Keyword(s):  
Initial Data ◽  
Somatostatin Receptor ◽  
Phase 2 ◽  
Receptor Ligands ◽  
Open Label ◽  
Once Daily ◽  
Somatostatin Receptor Ligands ◽  
Phase 2 Study ◽  
Previously Treated ◽  
Long Acting

scholarly journals Safety and Efficacy of Switching Injected Peptide Long-Acting Somatostatin Receptor Ligands to Once Daily Oral Paltusotine: ACROBAT Edge Phase 2 Study

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. A526-A527
Author(s):  
Monica R Gadelha ◽  
Murray B Gordon ◽  
Mirjana Doknic ◽  
Emese Mezősi ◽  
Miklós Tóth ◽  
...  
Keyword(s):  
Adverse Events ◽  
Treatment Period ◽  
Somatostatin Receptor ◽  
Study Drug ◽  
Receptor Ligands ◽  
Primary Analysis ◽  
Once Daily ◽  
Safety And Efficacy ◽  
Somatostatin Receptor Ligands ◽  
Long Acting

Abstract Patients with acromegaly not cured by surgery are often initially treated with injected peptide long-acting somatostatin receptor ligands (SRLs). Non-peptide small molecules can also activate the somatostatin receptor and do so with a high degree of precision for the target therapeutic receptor subtype. Paltusotine (formerly CRN00808) is a small molecule somatostatin type 2 (SST2) receptor agonist with high oral bioavailability (70%) and pharmacokinetic profile suitable for once daily dosing. In healthy volunteers, paltusotine has been shown to lower growth hormone (GH) and insulin-like growth factor-1 (IGF-1) levels. We hypothesized that patients with acromegaly could switch from injected SRLs to once daily oral paltusotine while maintaining baseline IGF-1 levels. ACROBAT Edge (NCT03789656) was a single-arm study designed to evaluate the safety and efficacy of switching from injected SRLs to paltusotine in patients with acromegaly. The primary analysis population consisted of those who had not achieved normal IGF-1 levels despite stable therapy with long-acting octreotide or lanreotide. Eligible patients received their last injection of SRL 4 weeks prior to switching to once daily oral paltusotine monotherapy for a 13-week treatment period. The starting dose of 10 mg per day was uptitrated in 10 mg increments at specified study visits to a maximal dose of 40 mg per day based on protocol specified study drug toleration and IGF-1 criteria. The primary endpoint was change in IGF-1 from baseline to the completion of the 13-week treatment period. Statistical testing was based on non-parametric Wilcoxon Sign Rank test of whether the median change is different from zero. In addition, the rise in IGF-1 during a 4-week washout period was used to provide supportive evidence of efficacy. Twenty-five patients were enrolled in the primary analysis group, three patients discontinued from the study for non-study drug related reasons, two during the treatment period and one during the washout period after completing treatment. The primary endpoint was achieved as paltusotine treatment resulted in no significant change in IGF-1 levels at week 13 compared to baseline [change in IGF-1 =-0.034 (-0.107, 0.107), median (IQR), p>0.6]. Of the 23 patients who completed the dosing period, 20 (87%) achieved IGF-1 levels at the end of treatment that were within 20% of baseline or lower. Median IGF-1 values rose significantly after paltusotine washout (p<0.0001). The most common treatment-emergent adverse events (>10%) included: headache, arthralgia, fatigue, peripheral swelling, paresthesia and hyperhidrosis. There were no discontinuations due to adverse events and no treatment related serious adverse events. These results suggest that patients with acromegaly treated with injected SRLs can switch to oral paltusotine while maintaining IGF-1 and that paltusotine appeared to be well tolerated.

scholarly journals Pemigatinib for previously treated, locally advanced or metastatic cholangiocarcinoma: a multicentre, open-label, phase 2 study

2020 ◽  
Vol 21 (5) ◽  
pp. 671-684 ◽  
Author(s):  
Ghassan K Abou-Alfa ◽  
Vaibhav Sahai ◽  
Antoine Hollebecque ◽  
Gina Vaccaro ◽  
Davide Melisi ◽  
...  
Keyword(s):  
Locally Advanced ◽  
Phase 2 ◽  
Open Label ◽  
Phase 2 Study ◽  
Open Label Phase ◽  
Previously Treated

Final survival analysis of NSGO-AVANOVA2/ENGOT-OV24: Combination of niraparib and bevacizumab versus niraparib alone as treatment of recurrent platinum-sensitive ovarian cancer—A randomized controlled chemotherapy-free study.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 6012-6012
Author(s):  
Mansoor Raza Mirza ◽  
Gitte-Betina Nyvang ◽  
Bente Lund ◽  
Rene dePont Christensen ◽  
Theresa Louise Werner ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Combined Treatment ◽  
Progression Free Survival ◽  
Phase 2 ◽  
Open Label ◽  
Once Daily ◽  
Platinum Sensitive ◽  
Phase 2 Study ◽  
Patient Reported ◽  
Eortc Qlq

6012 Background: We previously reported significantly improved progression-free survival (PFS) with the chemotherapy-free regimen of niraparib and bevacizumab compared to niraparib alone, in women with platinum-sensitive relapsed ovarian cancer (PSROC), regardless of homologous recombination deficiency (HRD) status (MyChoice HRD), duration of chemotherapy-free interval (CFI) and number of previous lines of therapy (Mirza MR et al, Lancet Oncol 2019). We now present the updated PFS, overall survival (OS) and other efficacy and safety endpoints. Methods: In this randomized, open-label, phase 2 study, women with measurable/evaluable, high-grade serous or endometrioid PSROC were randomized to niraparib 300mg once daily or the combination of niraparib 300mg once daily and bevacizumab 15mg/kg IV every 3 weeks until disease progression (1:1 randomization). The primary endpoint was PFS. Stratification was according to HRD status and CFI (6-12months (mo) vs. > 12mo). First-line maintenance bevacizumab was permitted. Results: Of 97 enrolled patients, 48 were randomized to niraparib monotherapy and 49 to the chemotherapy-free combination. The combined treatment significantly improved PFS compared to niraparib alone: updated median PFS 12.5 mo vs. 5.5 mo; hazard ratio (HR) adjusted for stratification factors 0.34; 95% confidence interval (CI) [0.21 to 0.55]; P < 0.0001. Preplanned exploratory subgroup analyses: patients with HRD-positive tumors (n = 54) HR 0.41 (CI, 0.23-0.76); HRD-negative disease (n = 43) HR, 0.40 (CI, 0.20-0.79); Time to First Subsequent Therapy (TFST) (n=97) HR, 0.4 (CI, 0.25-0.64); PFS2 (n=97) HR 0.55 (CI, 0.35-0.88); Time to Second Subsequent Therapy (TSST) (n=97) HR, 0.56 (CI, 0.35-0.90); OS (49 events only) HR, 0.77 (CI, 0.42-1.41). There was no difference in treatment-emergent grade 3-4 adverse events except for the rate of hypertension (22.9% vs. 0%) and neutropenia (8.3% vs. 2.0%). Patient-reported outcomes measured using EORTC QLQ-C30 and OV28 were similar for both treatment arms. Conclusions: Updated PFS consistently demonstrates that the niraparib-bevacizumab combination had clinically and statistically meaningful activity in PSROC. This phase 2 study was not powered to detect differences in OS or any other efficacy endpoints however TFST, PFS2 & TSST are significantly improved while there is a trend towards OS improvement with niraparib-bevacizumab combination. Clinical trial information: NCT02354131.

Somatostatin receptor ligands induce TSH deficiency in thyrotropin-secreting pituitary adenoma

2021 ◽  
Vol 184 (1) ◽  
pp. 1-8
Author(s):  
Frédéric Illouz ◽  
Philippe Chanson ◽  
Emmanuel Sonnet ◽  
Thierry Brue ◽  
Amandine Ferriere ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Somatostatin Receptor ◽  
Receptor Ligands ◽  
First Line ◽  
First Line Therapy ◽  
Line Therapy ◽  
Somatostatin Receptor Ligands ◽  
Central Hyperthyroidism ◽  
Long Acting ◽  
Tsh Deficiency

Objective Somatostatin receptor ligands (SRL) are useful to control central hyperthyroidism in patients with thyrotropin-secreting pituitary adenoma (TSH pituitary adenoma). The aim of this study was to describe the frequency of thyrotropin deficiency (TSH deficiency) in patients with TSH pituitary adenoma treated by SRL. Design Retrospective study. Methods Patients with central hyperthyroidism due to TSH pituitary adenoma treated by short or long-acting SRL were retrospectively included. TSH deficiency was defined by a low FT4 associated with non-elevated TSH concentrations during SRL therapy. We analysed the frequency of TSH deficiency and the characteristics of patients with or without TSH deficiency. Results Forty-six patients were included. SRL were used as the first-line therapy in 21 of 46 patients (46%). Central hyperthyroidism was controlled in 36 of 46 patients (78%). TSH deficiency appeared in 7 of 46 patients (15%) after a median time of 4 weeks (4–7) and for a median duration of 3 months (2.5–3). The TSH deficiency occurred after one to three injections of long-acting SRL used as first-line therapy in 6/7 cases. There were no differences in terms of clinical and hormonal features, size of adenomas or doses of SRL between patients with or without TSH deficiency. Conclusions SRL can induce TSH deficiency in patients with central hyperthyroidism due to TSH pituitary adenoma. Thyrotropic function should be assessed before the first three injections of SRL in order to track TSH deficiency and reduce the frequency of injections when control of thyrotoxicosis rather than tumour reduction is the aim of the treatment.

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