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C. Steuer
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MINI 29 - Meta Analyses and Trial Conduct (ID 156)
- Event: WCLC 2015
- Type: Mini Oral
- Track: Treatment of Advanced Diseases - NSCLC
- Presentations: 1
- Moderators:D. Morgensztern, M. Redman
- Coordinates: 9/09/2015, 18:30 - 20:00, Mile High Ballroom 2a-3b
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MINI29.01 - Squamous Cell Carcinoma of Lung in the United States: Analysis of the National Cancer Database (NCDB) (ID 2747)
18:30 - 20:00 | Author(s): C. Steuer
- Abstract
Background:
Lung squamous cell carcinoma (SCC) is the second most common histological sub type of lung cancer and accounts for about 30% of all non-small cell lung cancers (NSCLC). We analyzed the NCDB, an oncology outcomes database administered by the American College of Surgeons and the American Cancer Society, to study the epidemiology, patterns of care, outcomes and temporal changes in incidence of SCC.
Methods:
The NCDB was queried from 1998 to 2011 for SCC using ICD-O-3 codes. Temporal changes in incidence were estimated in intervals (1998-1999, 2000-2003, 2004-2007, 2008-2011). The univariate association with covariates between SCC and other subtypes of NSCLC was assessed using Chi-square test or ANOVA. The univariate (UV) and multivariable analysis (MV) with OS were conducted by Cox proportional hazards model and log-rank tests. All statistical analyses were conducted using SAS Version 9.3.
Results:
A total of 435,358 pts with SCC were included in the analysis and accounted for 28% of all NSCLC pts in NCDB. Pt characteristics: median age 70 (18-90 yrs); males 64%; whites 87%; academic centers 27%; metro locations 78%; government insured 72%; Charlson/Deyo comorbidity score (CDS) 0 in 55% and ≥2 in 15%, and stage III/IV- 34/31%. Chemotherapy was used in 39% of pts, radiation in 46% and surgery in 32%. Approximately 19% of the pts did not receive any of the three treatments. Incidence of SCC decreased over time (35%, 28%, 26%, 27%) vs. increasing trend in non-SCC (65%, 72%, 75%, 72%); p<0.001). The trend was similar across all races and sex. SCC was associated with a higher co-comorbidity burden than non-SCC across all stages (CDS 0: 55% vs. 62%; CDS 1: 31% vs. 27%; CDS ≥2: 15% vs. 11%; p<0.001). SCC was associated with inferior 5 yr survival vs. non-SCC in all stages (stage I- 30% vs. 41%, stage II- 16% vs. 21%, stage III- 8.5% vs.10%, stage IV- 1.9% vs. 2.5% respectively; p<0.0001). The 1 yr survival in stage IV SCC is 19.6% vs. 22.2% in non-SCC (p<0.0001). Males had worse survival (HR 1.11 (1.09-1.13; p<0.001). Pts at community centers had worse survival vs. academic centers (HR 1.27 (1.23-1.30; p<0.001). An increasing trend in chemotherapy use was observed (31% in 1998 to 43% in 2011) vs. a decreasing trend in use of radiation (52% in 1998 to 46% in 2011) and surgery (32% in 1998 to 27% in 2011). Chemotherapy was received by 48% of patients with stage IV SCC. Chemotherapy use across other stages: 0/I- 18%, II- 46%, III- 60%. Males were more likely to receive any treatment (OR 1.12 (1.08-1.15); p<0.001). Pts that received any treatment had significantly better 5 year survival than those who did not receive any (20.3% vs. 3.3%, p<0.0001)
Conclusion:
SCC accounted for 28% of all cases of NSCLC in the United States, was associated with higher comorbidities and a significantly worse survival compared to non-SCC of the lung. Chemotherapy was used in only 48% of pts with stage IV SCC.
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ORAL 05 - Surgery (ID 97)
- Event: WCLC 2015
- Type: Oral Session
- Track: Treatment of Locoregional Disease – NSCLC
- Presentations: 1
- Moderators:P. Van Schil, F.(. Kong
- Coordinates: 9/07/2015, 10:45 - 12:15, 201+203
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ORAL05.05 - Trimodality Therapy in the Treatment of Stage IIIA Non-Small Cell Lung Cancer (NSCLC): A National Cancer Database Analysis (ID 2962)
10:45 - 12:15 | Author(s): C. Steuer
- Abstract
Background:
Significant controversy remains regarding the care of patients (pts) with clinical stage IIIA NSCLC. While multi-modality therapy is an acceptable strategy in selected pts, the optimal approach is not firmly established. We analyzed outcomes and predictors associated with trimodality therapy (TT) in the National Cancer Database (NCDB), an oncology outcomes database administered by the American College of Surgeons and the American Cancer Society.
Methods:
The NCDB was queried from 2003-2011 for NSCLC pts diagnosed with stage IIIA-N2 disease and treated with chemotherapy and radiation (CRT). Data was extracted on patient demographics, tumor pathology, treatments and outcomes. Three cohorts of pts were studied - CRT only/no surgery (NS), CRT + lobectomy (L) and CRT + pneumonectomy(P). The univariate and multivariable analyses (MV) were conducted using Cox proportional hazards model and log rank tests. All analyses were performed using SAS Version 9.3.
Results:
A total of 29,584 pts were included in this analysis: NS-91.7%, L-7%, and P-1.5%. Pt characteristics: median age 66 years (yrs); males 56%; whites 86%; academic centers 27%; metro locations 78%; government insured 63%; Charlson/Deyo comorbidity score 0 in 66%. Pts < 60 yrs were more likely to receive TT- L (47%), P (60%) vs. NS (29%); p<0.001. Pts in academic centers were more likely to get TT than NS (42% vs. 25%). On MV analysis, L and P had significantly better survival vs. NS: HR 0.43 (0.38-0.48) and HR 0.57 (0.46-0.71) respectively; p <0.001. The median survival of L, P and NS were 44.5 m vs. 25.6 m vs. 15.7 m (p<0.001) and 5- year survival rates (SR) were 44% vs. 33% vs. 14% respectively. 30-day mortality was higher in P vs. L [7% vs. 2.6%; OR 0.26(0.16-0.45); p<0.001]. Pts with <2 lymph nodes (LN) had better survival than pts with >2 LNs in L (50% vs. 37%; 60m vs. 38.8m) but worse in NS (13.8% vs.16.4%; 15.3m vs.18.5m). On MV analysis of LNs, L had better survival than NS: HR 0.4 (0.35-0.46) in <2 LN pts and HR 0.56 (0.46-0.69) in ≥2 LN pts; p<0.001. In pts with <2 LN, L had better survival than P (60m vs. 25.5m; p<0.0001). L and P had better SR than NS in all ages: 48% vs.37% vs. 19% in ≤60 yrs; 42% vs. 30% vs.14% in 61-70 yrs, 36% vs.19% vs. 10% in >70 yrs.
Conclusion:
TT was utilized in less than 10% of pts with stage IIIA-N2 disease, suggesting high degree of pt selection. In this selected group, TT was associated with favorable outcomes relative to CRT alone.
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ORAL 20 - Chemoradiotherapy (ID 124)
- Event: WCLC 2015
- Type: Oral Session
- Track: Treatment of Locoregional Disease – NSCLC
- Presentations: 1
- Moderators:G. Blumenschein, J.Y. Chang
- Coordinates: 9/08/2015, 10:45 - 12:15, 201+203
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ORAL20.01 - A Systematic Review of Carboplatin-Paclitaxel versus Cisplatin-Etoposide Concurrent with Thoracic Radiation for Stage III NSCLC Patients (ID 600)
10:45 - 12:15 | Author(s): C. Steuer
- Abstract
- Presentation
Background:
The two most commonly used chemotherapy regimens deployed concurrently with thoracic radiation (RT) for patients with unresectable IIIA and IIIB non-small cell lung cancer (NSCLC) are carboplatin/paclitaxel (CP) and cisplatin/etoposide (CE). Because there are no prospective comparisons of these two regimens in this setting, we conducted a systematic review of published trials to compare outcomes and toxicities between CE and CP.
Methods:
Studies which enrolled stage III patients receiving RT with CP or CE were identified using electronic databases (MEDLINE, EMBASE, and Cochrane library) and meeting abstracts. Trials were excluded if they were phase I, enrolled less than 10 pts, or included surgical resection. A systematic analysis of extracted data was performed using Comprehensive Meta Analysis (Version 2.2) software using random and fixed effect models. Clinical outcomes were compared using point estimates for weighted values of median overall survival (OS), progression free survival (PFS), response rate (RR) and toxicities. Two-tailed T-test with a significance level of 0.05 was used for all comparisons.
Results:
3194 patients were included from 32 studies in the CE arm, and 3789 patients from 51 studies in CP. Baseline characteristics of patients on the CE arm versus CP arm were: median age 61 vs. 63 years, male 67.6% vs. 78%, squamous histology 39% vs. 40%, and median radiation dose 62 Gy vs. 63 Gy. There was no significant difference in response rates between CE and CP (65% vs. 56%, p =0.6), respectively. There was no significant difference in median progression free survival (11.5m vs. 9.3m p =0.2), overall survival (19.8m vs. 18.4m, p=0.48), 1-year survival rate (66% vs. 65%, p=0.8), or 3-year survival rate (31% vs. 25%, p=0.4) for CE vs. CP. CE was associated with higher grade 3/4 hematological toxicities than CP, such as neutropenia (53% vs. 23% p<0.0001), thrombocytopenia (14% vs. 6% p=0.001), anemia (16% vs. 8% p=0.06), as well as grade 3/4 nausea/vomiting (20% vs. 9% p=0.018), while rates of grade 3/4 pneumonitis and esophagitis were similar.
Conclusion:
CE and CP regimens were associated with comparable efficacy when used with concurrent radiotherapy for stage III unresectable NSCLC pts. The toxicity profile favored the CP regimen.
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P2.01 - Poster Session/ Treatment of Advanced Diseases – NSCLC (ID 207)
- Event: WCLC 2015
- Type: Poster
- Track: Treatment of Advanced Diseases - NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 9/08/2015, 09:30 - 17:00, Exhibit Hall (Hall B+C)
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P2.01-068 - Androgen Deprivation Therapy for Prostate Cancer Associated with Improved Survival in Non Small Cell Lung Cancer: A SEER-MEDICARE Analysis (ID 2743)
09:30 - 17:00 | Author(s): C. Steuer
- Abstract
Background:
Cancer of the prostate and lung are most commonly diagnosed in the elderly. Aberrant female sex hormone signaling has been well-described in NSCLC. The impact of androgen deprivation therapy (ADT) on non-small cell lung cancer (NSCLC) outcome has, however, not been well studied.
Methods:
We employed the linked SEER-MEDICARE database to assess the potential impact of ADT on NSCLC. We analyzed data from patients diagnosed with NSCLC between 1985 and 2005 and registered in the SEER-MEDICARE database. Patients were categorized into three groups: prostate cancer diagnosis followed by NSCLC (PL), NSCLC followed by prostate cancer (LP) and NSCLC only (L). Demographic and survival outcomes were compared between these groups. The impact of sequence of cancer diagnosis and ADT on survival post NSCLC diagnosis was assessed within the PL group using logistic regression model. Cox proportional hazards models were employed to estimate the effect of ADT and stage of prostate cancer on survival with adjustment for significant prognostic factors.
Results:
A total of 417630 patients were included in this analysis; male/female (56.4%/43.6%); Race: White (84.0%), Black (9.0%), Asian (2.1%), Hispanic (1.0%), others (3.0%); Stage: I (17.4%), II (2.9%), III (33.6%) and IV (46.1%). The majority of the patients were in the L group (96.3%), followed by PL (2.9%) and LP (0.8%). Patients in the LP group had the best 12-month survival rates (84.5%), followed by L (44.4%) and PL (40.1%). Analysis within the PL group showed an inverse correlation between stage of prostate cancer diagnosis and interval of time to NSCLC diagnosis: 54.8, 54.1, 62.1 and 59.3 months for stage I, II, III and IV prostate cancer, respectively. Prostate cancer patients exposed to ADT had a shorter interval to lung cancer diagnosis (48.3 vs. 52.7 months; p < 0.001). On multivariate analysis, patients exposed to ADT had a higher median survival (10 months vs. 9 months; p < 0.001) and reduced risk of death (HR:1.11; 95%CI:1.05-1.18), p <0.001).
Conclusion:
ADT therapy for prostate cancer was associated with improved survival for subsequent NSCLC diagnosis. Our result supports systematic exploration of ADT as a treatment strategy for NSCLC.
