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Attend this session at the
2019 ASCO Annual Meeting!


Session: Central Nervous System Tumors

Type: Poster Session

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

Location: Hall A

Clinical characteristics, treatment (Tx) patterns, and overall survival (OS) in advanced (Adv) NSCLC patients (Pts) with and without brain metastases (BM).

Sub-category:
Central Nervous System Tumors

Category:
Central Nervous System Tumors

Meeting:
2019 ASCO Annual Meeting

Abstract No:
2035

Poster Board Number:
Poster Session (Board #224)

Citation:
J Clin Oncol 37, 2019 (suppl; abstr 2035)

Author(s): Emily Nash Nash Smyth, Ramon Velasquez Tiu, Melinda D Willard, Julie Beyrer, Yajun Emily Zhu, Lee Bowman, Kristin M Sheffield, Yimei Han, Priscilla Brastianos; Eli Lilly and Company, Indianapolis, IN; Massachusetts General Hospital, Boston, MA

Abstract Disclosures

Abstract:

Background: BM in NSCLC pts are associated with significant morbidity and mortality. This analysis describes the frequency and timing of BM development, pt characteristics, systemic txs, and OS in NSCLC pts with and without BM. Methods: This retrospective observational study identified pts from the Flatiron-Foundation Medicine NSCLC Clinico-Genomic Database diagnosed from 1 Jan 2011 to 31 Oct 2017 with adv NSCLC and a tumor sample analyzed via FoundationOne. Tx pattern data were summarized by period (1 Jan 2011-1 Mar 2015; 2 Mar 2015-31 Dec 2017), therapy class (eg, anti-VEGF and EGFR, platinum-based), and BM occurrence. Descriptive statistics were used to summarize data; Chi-square and t-tests assessed statistically significant differences. OS was measured by site of met (BM only vs no-BM only vs BM and no-BM) via K-M methods from adv diagnosis until death or last activity date (censored). Results: Of 3257 pts, 1018/3257 (31.3%) had BM during follow-up; 726/1018 (71.3%) presented with BM within 30 days of adv diagnosis. The median age at adv diagnosis was 66.2 yrs. Relative to pts without BM, BM pts were younger, more likely to be female, of Asian descent, have stage IV disease, ≥2 met sites (including BM) at initial presentation, ≥3 met sites (including BM) during follow-up, and non-squamous histology (all p < 0.01). Approximately 78% (n = 2534) were treated with ≥1 systemic tx; platinum-based chemo-combinations were the most common 1st line tx, regardless of BM status. Increased use of PD-1/L1 tx was seen in 1st, 2nd, and 3rdline during the latter vs earlier period. No statistically significant difference in OS was observed in pts with BM only (17.1 mos; 95% CI 12.5-29.9), no-BM only (21 mos; 95% CI 19.4-22.8), or BM and no-BM (20.4 mos; 95% CI 18.9-23.3) (log rank p = 0.3027). Conclusions: In met NSCLC pts with a tumor sample that was molecularly profiled, OS was comparable, regardless of site(s) of disease; additional multivariate analyses including molecular profiles are needed. BM screening at initial diagnosis is important given the frequency in NSCLC. Future studies should assess whether the shift in systemic tx patterns impact the development and clinical outcomes.

 
Other Abstracts in this Sub-Category:

 

1. Second interim and first molecular analysis of the EORTC randomized phase III intergroup CATNON trial on concurrent and adjuvant temozolomide in anaplastic glioma without 1p/19q codeletion.

Meeting: 2019 ASCO Annual Meeting Abstract No: 2000 First Author: Martin J. Van Den Bent
Category: Central Nervous System Tumors

 

2. Randomized phase IIb clinical trial of continuation or non-continuation with six cycles of temozolomide after the first six cycles of standard first-line treatment in patients with glioblastoma: A Spanish research group in neuro-oncology (GEINO) trial.

Meeting: 2019 ASCO Annual Meeting Abstract No: 2001 First Author: Carmen Balana
Category: Central Nervous System Tumors

 

3. Updated predictive analysis of the WHO-defined molecular subgroups of low-grade gliomas within the high-risk treatment arms of NRG Oncology/RTOG 9802.

Meeting: 2019 ASCO Annual Meeting Abstract No: 2002 First Author: Erica Hlavin Bell
Category: Central Nervous System Tumors

 

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