Induction chemotherapy for stage IIIA unresectable non-small cell lung cancer: the Toronto experience and an overview

Lung Cancer Stage is an Independent Risk Factor for Surgical Mortality

Aims and Background

To study surgical mortality and evaluate major risk factors, with specific focus on the role of pathological stage in patients undergoing lung cancer resection.

Methods and Study Design

Age, gender, comorbidity, resection volume, experience of the hospital and surgical team have been reported as variables related to postoperative morbidity and mortality in lung cancer. The role of pathological tumor stage on postoperative mortality has never been fully evaluated. The study included 1418 consecutive lung cancer resections performed from 1998 to 2002 in two institutions. The effect of age, gender, comorbidity, resection volume, pathological stage and induction therapies on postoperative mortality was assessed by univariable and multivariable logistic regression analysis.

Results

Postoperative mortality was 1.8% overall, 3.7% (9/243) for pneumonectomy, 1.7% (17/1016) for lobectomy, and null (0/159) for sublobar resections (P = 0.020). At multivariable analysis, cardiovascular comorbidity (P = 0.008), resection volume (P = 0.036) and pathological stage (P = 0.027) emerged as significant predictors of surgical mortality.

Conclusions

Early stage lung cancer resection has a favorable effect on surgical mortality, not only by preventing the need for pneumonectomy, but also by reducing mortality after lobectomy.

Outcomes and prognostic factors of non-small-cell lung cancer with lymph node involvement treated with induction treatment and surgical resection

OBJECTIVES

Induction therapy (IT) has gained popularity in recent years, becoming a standard of treatment in resectable lymph node-positive NSCLC. IT aims to downstage the disease (shrinkage of tumour and clearance of lymph node-metastases), clear distant micrometastases and prolong survival. Potential disadvantages are increased morbidity and/or mortality after surgery and risk of progression of disease that could have been initially resected. The purpose of this study was to evaluate the outcomes and prognostic factors in a series of patients with lymph node-positive NSCLC receiving IT followed by surgery.

METHODS

A total of 86 patients (75.6% males, median age 63 years) affected by NSCLC in clinical stage IIIA (n = 80) or IIIB (n = 6), with pathologically proven lymph node involvement, underwent platinum-based IT followed by surgery between 2000 and 2009.

RESULTS

Eighty (93%) patients received a median of 3 cycles of chemotherapy, and 6 (7%) underwent induction chemoradiotherapy. Response to IT was complete in 3.5%, partial in 59.3% and stable disease in 37.2% of patients. Postoperative morbidity and mortality were 25.6 and 2.3%, respectively. At pathological evaluation, 38.4% of patients had a downstaging of disease with a complete lymph node clearance in 31.4%. Median overall survival was 23 months (5-year survival 33%). Univariate analysis found clinical stage (P = 0.02), histology (P = 0.01), response to IT (P = 0.02) and type of intervention (P = 0.047) to have predictive roles in survival. A better but not significant survival was also found for pN0 vs pN+ (P = 0.22), downstaged tumours (P = 0.08) and left side (P = 0.06). On multivariate analysis, clinical response to neoadjuvant therapy (P = 0.01) and age (P = 0.03) were the only independent predictors of survival.

CONCLUSIONS

The use of IT for lymph node-positive NSCLC seems justified by low morbidity and/or mortality and good survival rates. Patients with response to IT showed greater benefit in the long term.

Docetaxel as neoadjuvant therapy for radically treatable stage III non-small-cell lung cancer: a multinational randomised phase III study

BACKGROUND

Docetaxel (Taxotere) is a potent anticancer agent, with proven efficacy as first-line therapy in non-small-cell lung cancer (NSCLC). The aim of this large randomised multicentre phase III study was to evaluate docetaxel in the neoadjuvant (pre-operative) setting.

PATIENTS AND METHODS

Patients with stage IIIA or locally treatable IIIB NSCLC were randomly assigned to receive neoadjuvant docetaxel (n = 134) or no chemotherapy (n = 140) before surgery/curative-intention radiotherapy. Patients received up to three 3-weekly cycles of docetaxel (100 mg/m(2)) as 1-h intravenous infusions.

RESULTS

Median survival was 14.8 months in the docetaxel group and 12.6 months in the control group. Median times to disease progression were 9.0 months (docetaxel arm) and 7.6 months (control arm). There were three complete responses and 25 partial responses in patients treated with docetaxel who were evaluable for response (n = 101). Docetaxel was well-tolerated: 103 patients (77%) received all three planned cycles. The major toxicity was grade 4 neutropenia (69 patients, 55%) and neutropenic fever (eight patients, 6%). Radiotherapy was well-tolerated after docetaxel administration.

CONCLUSIONS

Neoadjuvant docetaxel is generally well-tolerated and shows a promising trend towards longer survival in patients with NSCLC.

[Preoperative chemotherapy and chemoradiotherapy for non-small-cell bronchial cancers]

The very disappointing results obtained by surgery in resectable non-small-cell lung cancer have led to a high active clinical research concerning pre- or postoperative treatment. Preoperative treatment has several distincts goals: to increase survival for patients suitable for surgery, to limit surgery or transform borderline or non resectable cancer into resectable tumors. Available datas on preoperative treatments for non-small-cell lung cancer provide from three types of therapeutics trials: 1/Some phase II studies of neoadjuvant chemotherapy have demonstrated that the neoadjuvant approach was feasible, and didn't compromise surgery. 2/Phase II trials of neoadjuvant chemoradiotherapy, performed for the majority on more extensive cancers, have demonstrated that this approach was also feasible at the expense of higher but still tolerable toxicity. 3/Phase III randomised published trials exclusively deal with preoperative chemotherapy with different results: two of them concerned a small number of patients presenting with non-small-cell lung stage IIIA cancer: they are positive. The third concerned 373 patients presenting with stage I, II, IIIA cancer: the three-year survival was increased by 11%, but this difference is not yet significant. The benefit essentially appeared for stage I and II. One trial comparing preoperative chemotherapy and radiochemotherapy has been reported, concluding to the superiority of the association. These observations suggest that the clinical research should now be different for stages I and II, and stage IIIA.