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G. Vassal
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MINI 30 - New Kinase Targets (ID 157)
- Event: WCLC 2015
- Type: Mini Oral
- Track: Treatment of Advanced Diseases - NSCLC
- Presentations: 1
- Moderators:K. Park, M. Villalona
- Coordinates: 9/09/2015, 18:30 - 20:00, Four Seasons Ballroom F3+F4
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MINI30.07 - Crizotinib in Patients with ROS1 NSCLC. Preliminary Results of the AcSé Trial (ID 2426)
19:05 - 19:10 | Author(s): G. Vassal
- Abstract
- Presentation
Background:
To avoid uncontrolled off-label use and allow for a nationwide safe access to crizotinib (crz) for patients (pts) with an ALK, MET or ROS1 positive (+) tumor, the French National Cancer Institute (INCa) launched the AcSé program, funding both access to tumor molecular diagnosis and an exploratory multi-tumor 2-stage design phase II trial. We report the preliminary results of the ROS1+ NSCLC cohort.
Methods:
ROS1 status was assessed in 28 regional INCa molecular genetic centers by break-apart FISH assays in tumor samples showing an IHC score of ≥1+. Pts with ROS1 rearrangements, progressing after at least one standard treatment (including a platinum-based doublet, unless pts were considered as unfit for chemotherapy) were proposed to receive crz 250 mg BID. Responses were centrally assessed using RECIST v1.1. The objective response rate (ORR) and disease control rate (DCR) were assessed every 8 weeks.
Results:
From Aug. 5, 2013 to Mar. 1, 2015, 39 pts with ROS1+ NSCLC were enrolled. 37 pts had received crz, leading to 37 pts with clinical information. Median age: 62 years (range 33–81), 70% females, 95% non-squamous histology, and 94% metastatic disease at study entry. Median number of prior treatments: 2 (range 1 –7). Twenty four pts were still on treatment at the cut-off date, 13 have stopped crz (8 PD, 3 adverse events (AEs), 2 deaths). Among the 27 pts evaluable for response at 8 weeks, we observed 16 PR, 7 SD and 4 PD, leading to ORR=59% [95% CI:39-78], and DCR=85% [66-96]. DCR at 6 months was 57% (disease control was achieved in 12/21 evaluable pts). Crz was well tolerated with only 4 grade ≥3 (1 AE + 3 SAEs) and 9 grade 1-2 SAEs. Most common AEs, mainly grade 1, were visual disorders (54% of pts), peripheral edema (51%), diarrhea (48%), nausea (46%), and elevated transaminases (43%).
Conclusion:
Crz was well tolerated and achieved a robust treatment response rate in ROS1+ NSCLC. These results underline the interest of integrating ROS1 in biomarkers routine screening. Survival data and duration of response will be presented.
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ORAL 03 - New Kinase Targets (ID 89)
- Event: WCLC 2015
- Type: Oral Session
- Track: Treatment of Advanced Diseases - NSCLC
- Presentations: 1
- Moderators:F. Blackhall, R. Juergens
- Coordinates: 9/07/2015, 10:45 - 12:15, Mile High Ballroom 4a-4f
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ORAL03.06 - Activity of Crizotinib in MET Amplified NSCLC: Preliminary Results of the AcSé Trial (ID 1200)
11:39 - 11:50 | Author(s): G. Vassal
- Abstract
- Presentation
Background:
Crizotinib (crz) is registered only for the treatment of patients (pts) with ALK-translocated lung cancer. Crz is also a MET inhibitor. MET is amplified in several malignancies. Activity of crz in MET amplified (+) tumors was explored as part of the French National Cancer Institute (INCa) AcSé program, including both access to tumor molecular diagnosis and an exploratory multi-tumor 2-stage design phase II trial. We report here results in pts with MET + NSCLC.
Methods:
MET analysis on formalin-fixed, paraffin-embedded tumor samples was proposed in 170 investigating centers and performed in 28 regional INCa molecular genetic centers. MET+ was explored by FISH in tumor samples showing an IHC score of ≥2+. Pts with a tumor showing > 6 MET copies, whatever the MET/CEN7 ratio, were eligible, providing they were not eligible for any other academic or industry trial evaluating another MET inhibitor. Study treatment consisted in crz 250 mg BID. The objective response rate (ORR) and disease control rate (DCR) were assessed every 8 weeks, using RECIST v1.1.
Results:
From Aug. 5, 2013 to Mar. 1, 2015, 25 pts with MET+ NSCLC were enrolled and received crz. Median age was 59 years (range 30–92). Forty-four percent were females, 92% had tumors of non-squamous histology, and 96% presented with metastatic disease at study entry. Median number of prior treatments was 2 (range 0 – 11). Eight pts were still on treatment at the cut-off date, 17 have stopped crz (15 progressive diseases (PD), 1 adverse event (AE), 1 patient’s choice). Among the 18 pts evaluable for response after 8 weeks, we observed 7 partial responses, 6 stable diseases and 5 PD, leading to an ORR of 39% [95% CI:17-64], and a DCR of72% [47-90]. DCR at 6 months was 22% (4 pts out of the 18 evaluable pts). Crz was well tolerated with only 5 grade ≥3 (2 AE + 3 SAEs) and 3 grade 1-2 SAEs. Most common AEs, mainly grade 1 or 2, were nausea (60% of pts), visual disorders (52%), anemia (52%), elevated transaminases (48%) and vomiting (40%).
Conclusion:
Nationwide biomarker-driven access to crz for pts with MET+ malignancy is feasible. Crz was well tolerated and showed responses in pretreated MET+ lung cancers. Survival data and duration of response will be presented.
Only 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, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
