Treatment outcomes of advanced digestive well-differentiated grade 3 NETs

2021 ◽  
Author(s):  
Louis de Mestier ◽  
Angela Lamarca ◽  
Jorge Hernando ◽  
Wouter Zandee ◽  
Teresa Alonso-Gordoa ◽  
...  

There is no standardized treatment for grade 3 neuroendocrine tumors (G3 NETs). We aimed to describe the treatments received in patients with advanced G3 NETs and compare their efficacy. Patients with advanced digestive G3 NETs treated between 2010 and 2018 in seven expert centers were retrospectively studied. Pathological samples were centrally reviewed, and radiological data were locally reviewed. We analyzed RECIST-defined objective response (OR), tumor growth rate (TGR) and progression-free survival (PFS) obtained with first- (L1) or second-line (L2) treatments. We included 74 patients with advanced G3 NETs, mostly from duodenal or pancreatic origin (71.6%), with median Ki-67 of 30%. The 126 treatments (L1=74; L2=52) included alkylating-based (n=32), etoposide-platinum (n=22) or adenocarcinoma-like chemotherapy (n=20), somatostatin analogs (n=21), targeted therapies (n=22) and liver-directed therapies (n=7). Alkylating-based chemotherapy achieved the highest OR rate (37.9%) compared to other treatments (multivariable OR 4.22, 95% CI [1.5-12.2]; p=0.008). Adenocarcinoma-like and alkylating-based chemotherapies showed the highest reductions in 3-month TGR (p<0.001 and p=0.008, respectively). The longest median PFS were obtained with adenocarcinoma-like chemotherapy (16.5 months [9.0-24.0]) and targeted therapies (12.0 months [8.2-15.8]), while the shortest PFS were observed with somatostatin analogues (6.2 months [3.8-8.5]) and etoposide-platinum chemotherapy (7.2 months [5.2-9.1]). Etoposide-platinum CT achieved shorter PFS than adenocarcinoma-like (multivariable HR 3.69 [1.61-8.44], p=0.002) and alkylating-based chemotherapies (multivariable HR 1.95 [1.01-3.78], p=0.049). Overall, adenocarcinoma-like and alkylating-based chemotherapies may be the most effective treatments for patients with advanced G3 NETs regarding OR and PFS. Etoposide-platinum chemotherapy has poor efficacy in this setting.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 6013-6013 ◽  
Author(s):  
Karen Anne Cadoo ◽  
Fiona Simpkins ◽  
Cara Amanda Mathews ◽  
Nashwa Kabil ◽  
James Bennett ◽  
...  

6013 Background: In Study 19 (NCT00753545), olaparib capsules demonstrated improvement in progression-free survival (PFS) vs placebo in the PSR OC maintenance setting, irrespective of BRCAm status (Ledermann et al. Lancet Oncol 2014). LIGHT is the first prospective study to evaluate olaparib tablet treatment in PSR OC pts by BRCAm and HRD status. Methods: This is an open-label, non-randomized study (NCT02983799) that assessed efficacy and safety of olaparib monotherapy (300 mg BID) in pts with PSR, high-grade serous/endometrioid epithelial OC and ≥1 prior line of platinum chemotherapy. Pts were assigned to one of four cohorts: germline (g) BRCAm; somatic (s) BRCAm; HRD+ve (non-BRCAm); HRD–ve; by Myriad BRACAnalysis CDx and myChoice tests. HRD+ve was a score ≥42. Primary endpoint was objective response rate (ORR). Secondary endpoints included: disease control rate (DCR) and investigator-assessed PFS (RECIST v1.1). Primary analysis was to be ~6 months (mo) after the last pt was enrolled. Results: Data cut off was 8/27/19. Of 271 pts treated (median of 31.7 weeks [2.1–96.0]), 270 had measurable disease at baseline and were included in efficacy analyses (Table). The most common treatment-emergent adverse events (AEs) were nausea (66%) and fatigue (62%).Serious AEs and Grade ≥3 AEs were experienced by 25% and 44% of pts, respectively. AEs leading to olaparib dose interruptions, reductions and discontinuations occurred in 33%, 24% and 4% of pts, respectively. Conclusions: Olaparib treatment demonstrated activity across all cohorts. As observed in the maintenance setting, similar efficacy was seen in the gBRCAm and sBRCAm cohorts. For non-BRCAm pts, longer median PFS and higher ORR were observed in the HRD+ve cohort. Olaparib treatment was well tolerated with no new safety signals identified and a safety profile consistent with that seen in the PSR and first-line settings. Clinical trial information: NCT02983799. [Table: see text]


2019 ◽  
Vol 37 (15_suppl) ◽  
pp. e15691-e15691
Author(s):  
Bhavana Konda ◽  
Sherise C. Rogers ◽  
Cassandra Natalie Grenade ◽  
Claire F. Verschraegen ◽  
Ye Zhou ◽  
...  

e15691 Background: PRRT using 177Lu-DOTATATE was US FDA approved in Jan 2018, and real world data in the US is lacking. Methods: We retrospectively reviewed medical records of patients who began PRRT 03/14/18 - 10/01/18 at our institution. 177Lu-DOTATATE was administered at a dose of 200mCi over 20-30 min every 8 weeks for 4 doses. Infusion of arginine-lysine 25gm/25gm in 1-liter normal saline was given over 4 hours starting 30 min prior to treatment, in addition to intravenous palonosetron 0.25mg. Results: 51 patients received at least 1 of 4 doses and 40/51 were no longer on active therapy. 28/40 received all 4 doses and 12/40 discontinued treatment after < 4 doses. 25/40 were evaluable for response per RECIST v1.1. 16/25 (64%) had GI NET, 3/25 (12%) pancreatic NET, 4/25 (16%) atypical lung carcinoid, 1/25 (4%) multifocal NET, and 1/25 (4%) had paraganglioma. 28% had grade 1, 56% grade 2, and 8% (2/25) had grade 3 (Ki 67: 25% and 40%) NET. 12/25 (48%) had received ≥2 prior systemic therapies not including somatostatin analogs, and 10/25 (40%) had ≥1 prior liver-directed therapy. Median follow-up from date of last PRRT was 61.5 days. Objective response (partial response) rate was 16% (4/25; table). 18/25 (72%) had stable disease and 3/25 (12%) had progressive disease. Most adverse events (AEs) were grade 1-2 and included fatigue, nausea, abdominal pain, and cytopenias. ≥Grade 3 AEs requiring treatment discontinuation included symptomatic gastric outlet obstruction (2/51), small bowel obstruction (1/51), ischemic enteritis (1/51), confusion/bone pains (1/51), liver failure (1/51), and severe neutropenia (1/51). All patients with ≥grade 3 AEs had a high tumor burden at baseline. Conclusions: 177Lu-DOTATATE is an effective and safe treatment in advanced NET, and our results are consistent with NETTER 1 data.[Table: see text]


2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 2572-2572 ◽  
Author(s):  
Jennifer Rauw ◽  
Marguerite Ennis ◽  
Monika K. Krzyzanowska ◽  
Srikala S. Sridhar

2572 Background: Combining novel targeted therapies with standard treatment is a common strategy in drug development. The primary aim of this systematic review was to provide a summary of the outcomes from studies combining EGFR targeted therapy (ETT) with standard treatments. Methods: A PubMed (1975-Jan, 2012) and ASCO (2005-2011) abstract database search was performed. Eligible studies were RCTs that compared standard therapies (chemotherapy, radiation therapy, or hormonal therapy) to standard therapy plus an ETT. Efficacy outcomes: overall survival (OS), progression free survival (PFS), objective response rate (ORR) time to progression (TTP), clinical benefit rate (CBR), and toxicity (total and grade 3+) were recorded. If any toxicity was significantly more frequent in one arm it was coded as such. Results: 128 studies (60 manuscripts, 68 abstracts) met criteria. Median study enrolment was 230 patients, with breast, lung, and colorectal cancer as the main tumor sites. ETT, cetuximab (41%), trastuzumab (19%), gefitinib (13%), erlotinib (13%), and lapatinib (16%), was combined with platinums, 5FU, taxanes, nucleoside analogs; hormonal therapy and/or radiation therapy. Refer to the table for efficacy results. Most frequent toxicities (common and grade 3+) in the combined arm were rash, diarrhea, hematological toxicity and fatigue. Conclusions: Despite enthusiasm for combining standard treatments with targeted therapies, we have demonstrated mixed efficacy results, with marginal benefit and worse toxicity. Quality of life (Q of L) was rarely reported. A similar analysis is underway for VEGFR, and mTor inhibitors, but raises the question of how best to approach the question of combination therapy. [Table: see text]


Cancers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 643
Author(s):  
Caroline Lacombe ◽  
Ophélie De Rycke ◽  
Anne Couvelard ◽  
Anthony Turpin ◽  
Aurélie Cazes ◽  
...  

Etoposide-platinum (EP) chemotherapy has long been the reference treatment for grade 3 neuroendocrine neoplasms (G3 NEN). However, G3 NEN are heterogeneous, including well-differentiated tumors (NET) and poorly differentiated large (LCNEC) or small (SCNEC) cell carcinomas, whose response to EP chemotherapy varies considerably. Our aim was to evaluate predictive biomarkers for the response to EP chemotherapy in G3 NEN. We retrospectively studied 89 patients with lung (42%) and digestive (58%) G3 NEN treated by EP chemotherapy between 2006 and 2020. All cases were centrally reviewed for cytomorphology/Ki-67 and immunohistochemistry of retinoblastoma protein (Rb)/p53/p16, analyzed using a semi-quantitative score. The absence of Rb staining (Rbinap) or the absence of very intense p53 staining (p53inap) were considered inappropriate. Rb staining was also studied as a quantitative marker, the best threshold being determined by ROC curve. Intense p16 staining (p16high) also suggested cell cycle dysregulation. Our primary endpoint was the objective response rate (ORR). We included 10 G3 NET, 31 LCNEC and 48 SCNEC, which showed ORR of 20%, 32% and 75%, respectively (NET vs. NEC, p = 0.040; LCNEC vs. SCNEC, p < 0.001). The ORR was significantly higher in NEN presenting with Rbinap (63% vs. 42%, p = 0.025) and p16high (66% vs. 35%, p = 0.006). Rb < 150 optimally identified responders (AUC = 0.657, p < 0.001). The ORR was 67% in Rb < 150 (vs. 25%, p = 0.005). On multivariate analysis, only Rb < 150 was independently associated with ORR (OR 4.16, 95% CI 1.11–15.53, p = 0.034). We confirm the heterogeneity of the response to EP treatment in G3 NEN. Rb < 150 was the best predictive biomarker for the response to EP, and p53 immunostaining had no additional value.


2017 ◽  
Vol 35 (6) ◽  
pp. 611-617 ◽  
Author(s):  
Kazuomi Ueshima ◽  
Naoshi Nishida ◽  
Masatoshi Kudo

Objectives: Previously, no therapeutic agent has been known to improve the overall survival compared with placebo in patients with hepatocellular carcinoma (HCC), who have progressed after sorafenib. In this patient population, regorafenib was first demonstrated to confer a survival benefit in the RESORCE trial, and subsequently it was approved as a second-line treatment for patients with advanced HCC. An open-label expanded access program (EAP) of regorafenib was implemented for compassionate use. We investigated the efficacy and safety of regorafenib based on our experience of the RESORCE trial and the EAP. Methods: Data from 5 patients from the RESORCE trial and 6 from the EAP were analyzed retrospectively. All patients had tolerated prior sorafenib and were progressing during sorafenib treatment. Results: The median progression-free survival was 9.2 months (95% CI 2.3-16.1). One patient achieved a partial response and 7 achieved stable disease. The objective response rate was 9.1%, and the disease control rate was 72.7%. No treatment-associated mortalities were observed. Grade 3 hypophosphatemia was observed in 2 patients, grade 2 anorexia was observed in 5 patients, and grade 3 neutropenia was observed in 2 patients. Grade 2 and grade 3 thrombocytopenia were observed in 2 and 3 patients, respectively. All treatment-related adverse events were improved by reduction or interruption of regorafenib. Five patients showed decreased serum albumin levels. Conclusion: Sorafenib and regorafenib sequential therapy presents a safe and effective treatment option for patients with advanced HCC.


Author(s):  
Yang Wang ◽  
Jun Nie ◽  
Ling Dai ◽  
Weiheng Hu ◽  
Jie Zhang ◽  
...  

Abstract Background The combination of PD-1/PD-L1 inhibitor and chemotherapy has been clinically confirmed to be beneficial as the first-line treatment of patients with advanced NSCLC. This study aimed to assess the effect of nivolumab + docetaxel versus nivolumab monotherapy in patients with NSCLC after the failure of platinum doublet chemotherapy. Materials and methods The efficacy and toxicity of nivolumab + docetaxel combination therapy versus nivolumab monotherapy were compared in this retrospective study. Primary endpoint of the study was progression-free survival (PFS), and the secondary endpoints were objective response rate (ORR), overall survival (OS), and toxicity. Results Between November 2017 and December 2019, 77 patients were included in this study, with 58 patients in the nivolumab group and 19 in the nivolumab + docetaxel group. The median follow-up was 18 months, and the PFS was 8 months for patients receiving nivolumab + docetaxel and 2 months for those receiving nivolumab alone (p = 0.001), respectively. Nivolumab + docetaxel showed superior OS compared with nivolumab, with the median OS unreached versus 7 months (p = 0.011). Among patients without EGFR/ALK variation, compared to nivolumab monotherapy, nivolumab + docetaxel showed better PFS (p = 0.04) and OS (p  = 0.05). There was no significant difference in grade 3–4 adverse events (AEs) between the two groups (p = 0.253). Conclusions The combination of nivolumab and docetaxel demonstrated a meaningful improvement in progression-free survival and overall survival compared to nivolumab monotherapy, in patients with NSCLC after the failure of platinum doublet chemotherapy, irrespective of EGFR/ALK variation status.


2021 ◽  
pp. 1-2
Author(s):  
Sarah Matz

<b>Purpose:</b> Patients with advanced endometrial carcinoma have limited treatment options. We report final primary efficacy analysis results for a patient cohort with advanced endometrial carcinoma receiving lenvatinib plus pembrolizumab in an ongoing phase Ib/II study of selected solid tumors. <b>Methods:</b> Patients took lenvatinib 20 mg once daily orally plus pembrolizumab 200 mg intravenously once every 3 weeks, in 3-week cycles. The primary end point was objective response rate (ORR) at 24 weeks (ORRWk24); secondary efficacy end points included duration of response (DOR), progression-free survival (PFS), and overall survival (OS). Tumor assessments were evaluated by investigators per immune-related RECIST. <b>Results:</b> At data cutoff, 108 patients with previously treated endometrial carcinoma were enrolled, with a median follow-up of 18.7 months. The ORRWk24 was 38.0% (95% CI, 28.8% to 47.8%). Among subgroups, the ORRWk24 (95% CI) was 63.6% (30.8% to 89.1%) in patients with microsatellite instability (MSI)-high tumors (n = 11) and 36.2% (26.5% to 46.7%) in patients with microsatellite-stable tumors (n = 94). For previously treated patients, regardless of tumor MSI status, the median DOR was 21.2 months (95% CI, 7.6 months to not estimable), median PFS was 7.4 months (95% CI, 5.3 to 8.7 months), and median OS was 16.7 months (15.0 months to not estimable). Grade 3 or 4 treatment-related adverse events occurred in 83/124 (66.9%) patients. <b>Conclusion:</b> Lenvatinib plus pembrolizumab showed promising antitumor activity in patients with advanced endometrial carcinoma who have experienced disease progression after prior systemic therapy, regardless of tumor MSI status. The combination therapy had a manageable toxicity profile. <b>Trial registration:</b> ClinicalTrials.gov NCT02501096.


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 11565-11565
Author(s):  
Scott Schuetze ◽  
Michael Rothe ◽  
Pam K. Mangat ◽  
Liz Garrett-Mayer ◽  
Funda Meric-Bernstam ◽  
...  

11565 Background: TAPUR is a phase II basket study evaluating anti-tumor activity of commercially available targeted agents in pts with advanced cancers with genomic alterations. Results in a cohort of STS pts with CDK4 amplification treated with P are reported. Methods: Eligible pts had advanced STS, no standard treatment options, measurable disease, ECOG PS 0-2, and adequate organ function. Genomic testing was performed in CLIA-certified, CAP-accredited site selected labs. Pts received P at 125 mg orally once daily for 21 days, followed by 7 days off until disease progression. Pts matched to P had CDK4 amplification and no RB mutations. Simon 2-stage design tested the null disease control (DC) - defined as partial (PR), complete response (CR) or stable disease at 16+ weeks (SD 16+) - rate of 15% vs. 35% (power = 0.85; α = 0.10). If ≥2 of 10 pts in stage 1 have DC, 18 more pts are enrolled. If ≥7 of 28 pts have DC, the null DC rate is rejected. Secondary endpoints are progression-free survival (PFS), overall survival (OS) and safety. Results: 29 pts (66% male) with STS with CDK4 amplification were enrolled from July 2016 to Nov 2019. 1 pt was not evaluable and excluded from efficacy analyses. Demographics and outcomes are summarized in Table. One pt with partial response (PR) and 12 pts with SD16+ were observed for DC and objective response (OR) rates of 48% (95% CI: 31%, 62%) and 3.7% (95% CI: 0.1%, 19%), respectively, and the null DC rate of 15% was rejected (p<0.001). 9/13 pts with DC continued on treatment for >32 weeks. 14 pts had at least one grade 3-4 AE at least possibly related to P with the most common being low WBC/platelets. Other grade 3 AEs included increased alanine aminotransferase, anemia, and fatigue. Conclusions: Monotherapy P demonstrated anti-tumor activity in heavily pre-treated pts with STS with CDK4 amplification. Additional study is warranted to confirm the efficacy of P in pts with STS with CDK4 amplification. Clinical trial information: NCT02693535. [Table: see text]


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 1074-1074
Author(s):  
Jiayu Wang ◽  
Binghe Xu ◽  
Tao Sun ◽  
Quchang Ouyang ◽  
Yiqun Han ◽  
...  

1074 Background: TQB2450 is a humanized monoclonal antibody targeting programmed death-ligand 1 (PD-L1). Anlotinib is an antiangiogenic small molecule, multi-target tyrosine kinase inhibitor that has improved clinical outcomes in various solid tumors. This phase 1b study aims to evaluate the safety and efficacy of TQB2450 plus anlotinib for patients with advanced triple-negative breast cancer (TNBC) after the failure of standard therapy. Methods: This ongoing study included a dose-escalation phase and an expansion phase. Advanced TNBC patients with prior anthracyclines and/or taxanes treatment and failed at least first-line therapy were enrolled. In the dose-escalation phase, eligible patients received anlotinib (8mg, 10mg, and 12mg, qd, days 1-14; 21 days per cycle) plus TQB2450 (1200mg, day 1; 21 days per cycle) following the conventional 3+3 design. If the starting dose of 10mg anlotinib led to ≥2 dose-limiting toxicities (DLTs), 8mg anlotinib would be administered. After the dose-escalating phase, eligible patients were enrolled into the expansion cohort. The primary endpoint was objective response rate (ORR), and the secondary endpoints were overall survival (OS), disease control rate (DCR), progression-free survival (PFS), and safety. Results: Between May 29, 2019, and December 31, 2020, in the dose-escalation phase, three patients receiving 10mg anlotinib plus 1200mg TQB2450 had no DLTs in the first cycle, neither did three patients with 12mg anlotinib plus TQB2450. Next, 28 patients with advanced TNBC received 12 mg anlotinib plus TQB2450 in the expansion phase. Finally, a total of 34 patients were included with median age of 49.5 (32-70) and median prior lines of 2 (1-6). Numbers of patients with prior platinum therapy: 16, prior anthracycline therapy: 32. The ORR was 26.47% (9/34) and DCR was 82.35% (28/34). The median PFS was 8.57 months. Seventeen patients experienced grade 3 treatment-related AEs (TRAEs). Most frequently occurring (>5%) grade 3 TRAEs were QT interval prolongation (17.65%), hypertension (14.71%), diarrhea (8.82%), hand-foot syndrome (HFS) (8.82%), and hypertriglyceridemia (5.88%). Conclusions: TQB2450 plus anlotinib showed an acceptable safety profile with promising activity for previously anthracyclines and/or taxanes-treated advanced TNBC patients. Clinical trial information: NCT03855358 .[Table: see text]


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e16567-e16567
Author(s):  
Anish B. Parikh ◽  
Sarah P. Psutka ◽  
Yuanquan Yang ◽  
Katharine Collier ◽  
Abdul Miah ◽  
...  

e16567 Background: ICI/TKI combinations are a new standard of care for the initial treatment (tx) of mRCC. Efficacy and toxicity of such combination regimens beyond the first-line (1L) setting remain unknown. Methods: We retrospectively reviewed charts for adult patients (pts) receiving an ICI/TKI combination in any line of tx for mRCC of any histology at one of two academic centers as of May 1, 2020. ICIs included pembrolizumab (Pm), nivolumab (Ni), ipilimumab (Ip), or avelumab (Av); TKIs included sunitinib (Su), axitinib (Ax), pazopanib (Pz), lenvatinib (Ln), or cabozantinib (Ca). Clinical data including pt demographics, histology, International mRCC Database Consortium (IMDC) risk group, tx history, and ICI/TKI tx and toxicity details were recorded. Outcomes included objective response rate (ORR), median progression-free survival (mPFS), and safety, analyzed via descriptive statistics and the Kaplan-Meier method. Results: Of 85 pts, 69 (81%) were male and 67 (79%) had clear cell histology. IMDC risk was favorable (24%), intermediate (54%), poor (20%), and unknown (2%). 39% had ICI/TKI tx in the 1L setting. ICI/TKI regimens included Pm/Ax (33%), Ni/Ca (25%), Ni/Ax (20%), Av/Ax (11%), Ni/Ip/Ca (8%), Ni/Su (2%), and Ni/Ln (1%). ORR and mPFS stratified by line of tx and prior tx are shown in the table. Of 52 pts who received ICI/TKI tx as salvage (after 1L), 52% had a grade 3 or higher (≥G3) adverse event (AE), of which the most common were anorexia (13.5%), diarrhea and hypertension (11.5% each), and fatigue (9.6%). 65% of pts on salvage ICI/TKI tx stopped tx for progression/death, while 16% stopped tx for ≥G3 AE. ≥G3 AE rates by line of tx were 62.5% (2L), 50% (3L), and 45% (≥4L). Conclusions: ICI/TKI combination therapy is effective and safe beyond the 1L setting. Prior tx history appears to impact efficacy but has less of an effect on safety/tolerability. These observations will need to be confirmed in prospective studies.[Table: see text]


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