Patterns of Use of Induction Therapy for T2N0 Esophageal Cancer

Background

Induction therapy for patients with cT2N0M0 esophageal cancer is controversial. We performed a retrospective cohort analysis of the National Cancer Database (NCDB) to examine the patterns of use of induction therapy for this population.

Methods

The NCDB was queried for patients with cT2N0M0 esophageal cancer who underwent esophagectomy (2004-2015). Patients were stratified by upfront surgery or induction therapy. Overall survival was analyzed and a multivariable logistic regression was performed to identify factors associated with receipt of induction therapy.

Results

Overall, 2540 patients met study criteria: 1177 (46%) received upfront esophagectomy and 1363 (53%) received induction therapy. Patients receiving induction therapy were more likely to be younger, male, without comorbidities, privately insured, and treated at a non-academic center. These patients were also less likely to be treated in highest volume surgery centers. In multivariable regression, factors independently associated with receipt of induction therapy included later year of diagnosis, increasing tumor size, and increasing tumor grade. Factors associated with upfront esophagectomy included advancing age, comorbidities, lack of insurance, geographic location, and highest volume centers. The receipt of induction chemotherapy was not associated with a survival benefit compared to no induction therapy.

Conclusions

Several patient, treatment center, and tumor related factors are associated with receipt of induction therapy for cT2N0M0 esophageal cancer, although induction therapy is not associated with a survival benefit. Further inquiry into these differences and the potential benefit, or lack thereof, of induction therapy should be conducted to provide more equitable and appropriate care for patients with esophageal cancer.

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