Start Your Search
MA 01 - SCLC: Research Perspectives (ID 650)
- Event: WCLC 2017
- Type: Mini Oral
- Track: SCLC/Neuroendocrine Tumors
- Presentations: 1
MA 01.07 - Lanreotide Maintenance in SCLC Expressing Somatostatine Receptors: Efficacy Results of Multicenter Randomized G04.2011 Trial (ID 8480)
11:00 - 12:30 | Author(s): L. Bonanno
SCLC is featured by both a rapid response and progression during/after standard upfront therapy. Thus, maintenance strategies emerged as potential treatment opportunities, although to date all drugs failed to significantly improve prognosis. SCLC cells harbor a neuroendocrine phenotype, frequently expressing somatostatine (SST) receptors. This study aimed to investigate the efficacy of somatostatine (SST) analogue Lanreotide (LAN) as a maintenance strategy for SCLC patients (pts) after response to standard upfront treatment.
A multicentre, randomized, open-label, no-profit national trial was conducted, randomizing (1:1) SCLC (limited/extended disease, L/ED) pts expressing SST receptors (by SST receptor scintigraphy) with objective response (CR or PR) after upfront platinum-based chemotherapy plus/minus radiotherapy to receive maintenance LAN 120 mg subcutaneously every 28 days, up to progressive disease (PD) for 1 year (Arm A), versus observation (Arm B). Primary end-point was 1-year Progression-Free Survival (PFS). Primary intention-to-treat (ITT) analysis was planned (power: 80%; 2-tailed alpha-error: 5%) after 47 PFS events.
Seventy-one pts (median age 66 [37-82]; male/female 72/28%; L/ED 39/61%; ECOG-PS 0-1/2 97/3%; previous best response CR/PR 6/94%) were randomized in 9 Italian centers. Median time from diagnosis and end-of-1[st] line to inclusion was 5.7 months (3-160) and 30 days (0-119), respectively. Median number of LAN doses and treatment duration (Arm A) was 4 (1-12) and 83 days (1-392), respectively. With a median follow-up of 9.4 months and 62 events, median PFS was 3.6 (95% CI 3.2-3.9) versus 2.3 months (95% CI 1.7-2.9), for Arm A and B (log-rank p=0.11; HR 1.51, 95% CI 0.90-2.50), with a 1-year PFS of 10.3% versus 7.3%, respectively. At the cox-proportional multivariate modelling, stage (ED versus LD, HR 2.88 [95% CI 1.64-5.04, p<0.0001) and treatment arm (B versus A, HR 1.63 [95% CI 0.97-2.72], p=0.06) were independent predictors for PFS. Median PFS of arm A and B was 7.0 [95% CI <1-13.5] and 3.8 months [95% CI <1-8.6] in LD pts (p=0.21), and 3.0 (95% CI 2.2-3.8) and 2.2 (95% 1.7-2.7) in ED pts (p=0.19). Median OS was 9.5 (95% CI 4.8-14.3) and 4.7 months (95% CI 1.7-16.6), for Arm A and B (log-rank p=0.47), respectively. LAN was well-tolerated: serious treatment-related adverse events were grade 3 abdominal pain and electrolyte disorder in overall 2 pts.
Although the primary end-point was not met, the overall efficacy of LAN as a maintenance strategy after response to standard upfront treatment for SCLC deserves future investigations, particularly in pts with LD.
Only Active Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login or select "Add to Cart" and proceed to checkout.
P1.01 - Advanced NSCLC (ID 757)
- Event: WCLC 2017
- Type: Poster Session with Presenters Present
- Track: Advanced NSCLC
- Presentations: 1
- Coordinates: 10/16/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)
P1.01-015 - Crizotinib in ROS1 Rearranged or MET Deregulated Non-Small-Cell Lung Cancer (NSCLC): Final Results of the METROS Trial (ID 9454)
09:30 - 16:00 | Author(s): L. Bonanno
Crizotinib is the standard of care in NSCLC with ALK rearrangement. Recent data showed that the drug is dramatically effective in patients with ROS1 rearrangement (ROS1[+]), with promising activity also in individuals with MET exon 14 mutations (MET[Ex14]) or MET amplification (MET[FISH+]).
The METROS is an Italian multicenter prospective phase II trial designed to assess the efficacy and safety of crizotinib in ROS1[+ ]or MET[Ex1][4 ]or MET[FISH][+ ]advanced NSCLC patients who failed at least 1 standard chemotherapy regimen. The co-primary end-point was response rate (RR) in cohort A (ROS1+: centrally confirmed ROS1 rearrangement) and cohort B (MET+: centrally confirmed MET[FISH][+ ]defined as ratio MET/CEP7 >2.2 or locally confirmed MET[Ex1]). Eligible patients received crizotinib at the standard dose of 250 mg BID orally.
At the data cut-off of April 30[th], 2017, both cohorts completed accrual. Among 498 screened patients, 52 accounted for the intent-to-treat population (ITT) and received at least 1 dose of crizotinib. Among them, 26 resulted ROS1[+], 16 MET[FISH][+] and 10 MET[Ex1]. Notably, 3 MET[Ex1] cases had concurrent KRAS mutation and 1 had concurrent MET gene amplification. No concomitant driver event was detected in the ROS1 cohort. Cohort A included individuals with adenocarcinoma, median age of 55 years (range 29-86), predominantly female (61%) and never smokers (54%). Cohort B included older subjects (median age 68, range 39-78), predominantly male (65%), current/former smokers (77%) and with adenocarcinoma (92%). In both cohorts, the vast majority of patients (85%) presented > 2 metastatic sites and crizotinib was mainly offered as second line treatment (74%). Time from end of first line therapy to crizotinib was 4.1 and 1.6 months for cohort A and B, respectively. In ITT population RR, median progression free-survival (PFS) and overall survival (OS) were 61.5%, 17.2 months and not reached in cohort A and 26.9%, 3.1 months and 5.3 months in cohort B, respectively. For cohort B, responses were observed in both MET[FISH][+] and MET[Ex1] (25% and 30%, respectively), with evidence of rapid progression in patients carrying MET[Ex1][/KRAS]. At present, for 2 MET+ patients assessment is pending. Therapy was generally well tolerated with no unexpected adverse event.
The METROS is the first prospective trial specifically conducted in ROS1+ or MET+ deregulated NSCLC. The study confirms remarkable efficacy of crizotinib in ROS1[+] NSCLC. Responses observed in the MET cohort were of short duration confirming aggressiveness of the disease and the urgent needs for innovative therapies.