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A.J. Iafrate
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MO07 - NSCLC - Targeted Therapies II (ID 114)
- Event: WCLC 2013
- Type: Mini Oral Abstract Session
- Track: Medical Oncology
- Presentations: 1
- Moderators:T. John, J.W. Riess
- Coordinates: 10/28/2013, 16:15 - 17:45, Bayside Auditorium B, Level 1
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MO07.03 - Crizotinib therapy for patients with advanced ROS1-rearranged non-small cell lung cancer (NSCLC) (ID 2777)
16:25 - 16:30 | Author(s): A.J. Iafrate
- Abstract
- Presentation
Background
Rearrangements of the ROS1 receptor tyrosine kinase gene identify a subset of NSCLC sensitive to the small-molecule ALK and MET inhibitor crizotinib, approved multinationally for the treatment of advanced ALK-positive NSCLC. Here we present updated efficacy and safety data for crizotinib in an expanded cohort of patients with advanced ROS1-rearranged NSCLC.Methods
ROS1 status was determined by break-apart FISH assays, and patients were enrolled into an expansion cohort of an ongoing phase I crizotinib study (PROFILE 1001; NCT00585195, Pfizer). Where available, samples were also tested for concurrent ALK rearrangement and MET amplification. Patients received crizotinib 250 mg BID, and responses were assessed using RECIST v1.0.Results
At the data cut-off, 35 of 40 patients with ROS1-positive NSCLC were evaluable for response. Median age was 51 years (range 31–77), 80% of patients were never-smokers, and 98% had adenocarcinoma histology; 40% had received one prior regimen, and 45% had received 2–6 regimens for advanced/metastatic disease. 25 samples tested for concurrent ALK rearrangement (24 by FISH and 1 by PCR) and 12 samples tested for concurrent MET amplification (11 by FISH and 1 method not recorded) were all negative. The objective response rate (ORR) was 60% (95% CI: 42–76), with 2 complete responses, 19 partial responses, and 10 cases of stable disease. Median progression-free survival (PFS) had not been reached, with 25 patients (63%) still in follow-up for PFS; six patients (15%) experienced disease progression, and two (5%) died before progression occurred; 6-month PFS probability was 76% (95% CI: 55–88). The disease-control rate was 80% at 8 weeks and 66% at 16 weeks. The most common treatment-related adverse events (AEs) were visual impairment (80%), diarrhea (35%), and nausea (30%), with most patients (68%) reporting only AEs of grade 1 or 2 severity. Peripheral edema (28%) and elevated transaminases (18% AST, 15% ALT) were also reported, similar to previous experience with crizotinib. There were no treatment-related serious AEs and one patient discontinued treatment due to treatment-related nausea. Accrual of patients with ROS1-positive NSCLC is ongoing.Conclusion
Similar to results obtained in ALK-positive NSCLC, crizotinib had marked antitumor activity with a high ORR (60%) in patients with ROS1-positive NSCLC, with a generally tolerable and manageable AE profile. These data suggest that crizotinib is an effective therapy for patients with advanced ROS1-positive NSCLC.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.
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PL03 - Presidential Symposium Including Top Rated Abstracts (ID 85)
- Event: WCLC 2013
- Type: Plenary Session
- Track:
- Presentations: 1
- Moderators:M. Boyer, K. Fong
- Coordinates: 10/29/2013, 08:15 - 09:45, Plenary Hall, Ground Level
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PL03.07 - Treatment with Therapies Matched to Oncogenic Drivers Improves Survival in Patients with Lung Cancers: Results from The Lung Cancer Mutation Consortium (LCMC) (ID 2444)
09:21 - 09:33 | Author(s): A.J. Iafrate
- Abstract
Background
Detecting and targeting the oncogenic drivers EGFR and ALK have transformed the care of patients with lung adenocarcinomas. The LCMC was established to use multiplexed assays to test tumors for alterations in 10 genes and provide the results to clinicians to select treatments and clinical trials matched to the driver detected.Methods
Fourteen LCMC sites enrolled patients with metastatic lung adenocarcinomas and tested their tumors in CLIA laboratories for activating mutations in 10 oncogenic driver genes.Results
Tumors were tested from 1,007 patients for at least one gene and 733 for all 10 genes. An oncogenic driver was found in 466 (64%) of fully-genotyped cases. Among these 733 tumors, drivers found were: KRAS 182 (25%), sensitizing EGFR 122 (17%), ALK rearrangements 57 (8%), “other” EGFR 29 (4%), two genes 24 (3%), HER2 19 (3%), BRAF 16 (2%), PIK3CA 6 (1%), MET amplification 5 (1%), NRAS 5 (1%), MEK1 1 (<1%), AKT1 0. For cases with any genotyping, we used results to select a targeted therapy or trial in 275 (28%). Among 938 patients with follow-up, the median survivals were 3.5 years for the 264 with an oncogenic driver treated with genotype-directed therapy, 2.4 years for the 318 with an oncogenic driver with no genotype-directed therapy, and 2.1 years for the 360 with no driver identified (p<0.0001).Conclusion
Individuals with lung cancers with oncogenic drivers receiving a corresponding targeted agent lived longer than similar patients who did not. An actionable driver was detected in 64% of tumors from patients with lung adenocarcinomas; more than one was present in 3%. Multiplexed testing aided physicians in choosing therapies and targeted trials in 28% of patients. This paradigm for care and research will expand as genotyping becomes more efficient with Next-Gen platforms, additional drivers are identified (i.e.ROS1 and RET), and more targeted drugs become available in the pharmacy and through clinical trials. Supported by HSS NIH NCI 1RC2CA148394-01. Trial Registered with Clinicaltrials.gov: NCT01014286.
