Presenter: Timothy Winton Presenter's Affiliation: National Cancer Institute of Canada Type of Session: Scientific
Recent studies have shown that adjuvant chemotherapy following complete resection of non-small cell lung cancer (NSCLC) improves overall survival
The majority of this benefit has been seen in patients with higher stage disease.
The role of adjuvant chemotherapy is less clear in patients with stage I and II disease
This study was designed to examine whether the addition of vinorelbine and cisplatin is superior to observation alone for overall survival of patients with complete resection of stage IB and II NSCLC
Materials and Methods
Patients with T2N0, T1N1, or T2N1 NSCLC were enrolled in the study (T3N0 patients were excluded) from July 1994 to April 2001
All patients were ECOG performance status (PS) 0-1 and underwent complete surgical resection. Patients undergoing segmentectomy or wedge resection were excluded
Following surgery, patients were randomized to observation or adjuvant chemotherapy
Adjuvant chemotherapy consisted of cisplatin (50 mg/m2, d1&8) q 4 wks x 4 cycles with vinorelbine. Initially vinorelbine dose was 30 mg/m2 qwk x 16 wks but was reduced in August 1995 to 25 mg/m2 qwk x 15 wks due to hematologic toxicities
Patient groups were well balanced in terms of age, gender, PS, histology, stage, extent of resection, and presence of RAS mutation
65% of patients received 3 or 4 cycles of chemotherapy (median = 3 cycles)
77% of patients required at least one dose reduction, mostly due to neutropenia
5-year recurrence-free survival (RFS): 48% vs. 61% (p=0.012)
Median RFS: 46.7 mo vs. non-yet-reached (p=0.0004) (hazard ratio = 0.61)
5-year overall survival (OS): 69% vs. 54% (p=0.0022)
Median OS: 73 mo vs. 94 mo (p=0.012) (hazard ratio = 0.7)
Grade 3 or 4 granulocytopenia was seen in 73% of patients
7% of patients experienced grade 3 or 4 febrile neutropenia
Vinorelbine and cisplatin can be administered safely after complete resection of NSCLC
With the exception of neurotoxicity, the impact of chemotherapy on QOL was small and generally reversible
Adjuvant cisplatin and vinorelbine result in significantly improved RFS and OS in stage IB and II NSCLC patients
This study combined with the CALGB study also presented at this conference provide convincing evidence that the addition of adjuvant chemotherapy to completely resected early stage NSCLC improves relapse-free and overall survival. It is unclear why this study shows a dramatic improvement in survival when other similar studies have failed to do so. This study included both stage IB and II patients and was conducted in conjunction with several other cooperative groups including ECOG, SWOG, and CALGB. The patient population does not appear to be particularly favorable compared to previous studies. It is possible the use of more modern chemotherapy may contribute to this benefit. Regardless, these studies along with recently reported data by the International Adjuvant Lung Cancer Trial (IALT) (which showed a small but significant survival benefit for cisplatin-based chemotherapy in completely resected stage I-III NSCLC) have established adjuvant chemotherapy as the standard of care in this group of patients.
Oncolink's ASCO Coverage made possible by an unrestricted Educational Grant from Bristol-Myers Squibb Oncology.
Dec 21, 2010 - An acne-like rash among patients with non-small-cell lung cancer undergoing treatment with cisplatin and vinorelbine plus cetuximab is associated with improved outcomes, according to research published online Dec. 20 in The Lancet Oncology.