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Attend this session at the
2019 ASCO Annual Meeting!


Session: Lung Cancer—Non-Small Cell Metastatic

Type: Poster Session

Time: Sunday June 2, 8:00 AM to 11:00 AM

Location: Hall A


Session: Lung Cancer—Non-Small Cell Metastatic

Type: Poster Discussion Session

Time: Sunday June 2, 4:30 PM to 6:00 PM

Location: Hall D1

S1507: Phase II study of docetaxel and trametinib in patients with G12C or non-G12C KRAS mutation positive (+) recurrent non-small cell lung cancer (NSCLC).

Sub-category:
Metastatic Non-Small Cell Lung Cancer

Category:
Lung Cancer—Non-Small Cell Metastatic

Meeting:
2019 ASCO Annual Meeting

Abstract No:
9021

Poster Board Number:
Poster Discussion Session (Board #344)

Citation:
J Clin Oncol 37, 2019 (suppl; abstr 9021)

Author(s): Shirish M. Gadgeel, Jieling Miao, Jonathan W. Riess, Philip C. Mack, Gregory James Gerstner, Timothy F. Burns, Asma Taj, Wallace L. Akerley, Konstantin H. Dragnev, James Moon, David R. Gandara, Karen Kelly; Rogel Cancer Center, University of Michigan, Ann Arbor, MI; SWOG Statistical Center, Fred Hutchinson Cancer Research Center, Seattle, WA; UC Davis Comprehensive Cancer Center, Sacramento, CA; Illinois Cancer Care, Peoria, IL; University of Pittsburgh Cancer Institute, Pittsburgh, PA; St Marys of Michigan, Saginaw, MI; Huntsman Cancer Institute at University of Utah, Salt Lake City, UT; Dartmouth-Hitchcock Medical Center, Lebanon, NH; Southwest Oncology Group Statistical Center, Seattle, WA; University of California, Davis, Sacramento, CA; University of California Davis Comprehensive Cancer Center, Sacramento, CA

Abstract Disclosures

Abstract:

Background: KRAS+ NSCLC remains the most common genetically defined subset of NSCLC. Despite promising pre-clinical data, MEK inhibitors have failed to provide meaningful clinical benefit both as single agents and in combination with chemotherapy in KRAS+ NSCLC patients. Pre-clinical data suggest that efficacy of MEK inhibitors in KRAS+ NSCLC differs based on specific KRAS mutations such as G12C and by status of p53 or LKB1 mutations. We conducted a phase II study to assess the efficacy of docetaxel plus trametinib in KRAS+ NSCLC patients and in specific genetic subsets. Methods:KRAS+ NSCLC patients who had progressive cancer following 1 or 2 prior regimens were eligible. Docetaxel was given at 75 mg/m2 every 3 weeks and trametinib orally at 2 mg daily. The study was 2-stage design to rule out a response rate (RR) of 17% at the 3% level with 90% power if the true rate were 37%. The study required 45 pts with a futility analysis at 30 pts; 13/45 responses would indicate a success. RR was also assessed in G12C and non-G12C cohorts and will be assessed according to presence of co-mutations in p53 and LKB1. Progression free survival (PFS) and overall survival (OS) were secondary endpoints. Multivariate analysis including age, sex, number of prior treatments, prior immunotherapy (IO) and G12C status was conducted. Results: The study enrolled 54 evaluable pts (19 G12C, 9 G12D, 9 G12A); median age 65 years; female 57%; never smokers 7%; adenocarcinoma 89%; liver metastases 31%; 2 prior regimens 70%; prior IO 57%. Outcomes are summarized in Table. Median duration of therapy was 2.2 months and most common toxicities were fatigue (78%), diarrhea (68%), nausea (57%) and vomiting (28%). One patient died of treatment related respiratory failure. There was a trend for worse PFS (HR- 1.86, p = 0.06) and survival (HR- 1.80, p = 0.14) in G12C patients. Analysis of efficacy data according to co-mutations in p53 or LKB1 is ongoing. Conclusions: Docetaxel plus trametinib met the primary endpoint of the study, with a RR of 33% and median survival of 11.1 months in patients with KRAS+ NSCLC, 70% of whom had received 2 prior regimens. Although, there was no statistical difference between KRAS+ subtypes, these data suggest that outcomes may differ between G12C and non-G12C patients. Clinical trial information: NCT02642042

AllG12CNon-G12C
Response33% (95% CI: 21%-47%)26% (95% CI: 9%-51%)37% (95% CI: 21%-55%)
PFS (median in months)4.1 (95% CI- 3.1-5.1)3.3 (95% CI: 1.5-4.3)4.1 (95% CI: 3.4-5.6)
OS (median in months)11.1 (95% CI- 8-17)8.8 (95% CI: 4.9-12.1)16.3 (95% CI: 9.9-17.7)

 
Other Abstracts in this Sub-Category:

 

1. Association of STK11/LKB1 genomic alterations with lack of benefit from the addition of pembrolizumab to platinum doublet chemotherapy in non-squamous non-small cell lung cancer.

Meeting: 2019 ASCO Annual Meeting Abstract No: 102 First Author: Ferdinandos Skoulidis
Category: Lung Cancer—Non-Small Cell Metastatic - Metastatic Non-Small Cell Lung Cancer

 

2. Real-world outcomes of patients with advanced non-small cell lung cancer (aNSCLC) and autoimmune disease (AD) receiving immune checkpoint inhibitors (ICIs).

Meeting: 2019 ASCO Annual Meeting Abstract No: 110 First Author: Sean Khozin
Category: Lung Cancer—Non-Small Cell Metastatic - Metastatic Non-Small Cell Lung Cancer

 

3. RELAY: A multinational, double-blind, randomized Phase 3 study of erlotinib (ERL) in combination with ramucirumab (RAM) or placebo (PL) in previously untreated patients with epidermal growth factor receptor mutation-positive (EGFRm) metastatic non-small cell lung cancer (NSCLC).

Meeting: 2019 ASCO Annual Meeting Abstract No: 9000 First Author: Kazuhiko Nakagawa
Category: Lung Cancer—Non-Small Cell Metastatic - Metastatic Non-Small Cell Lung Cancer

 

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