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Chemotherapy Effectiveness & Initiation Time After Lung Cancer Surgery

doi: 10.1097/01.COT.0000513041.87859.ab

A new study suggests patients who recover slowly from non-small cell lung cancer (NSCLC) surgery may still benefit from delayed chemotherapy started up to 4 months after surgery (JAMA Oncol 2017; doi:10.1001/jamaoncol.2016.5829).

Adjuvant chemotherapy after initial cancer surgery has become a standard recommendation for patients with NSCLC with lymph node metastases, tumors that are 4 cm or larger or extensive local invasion of the cancer. While there is consensus regarding indications for chemotherapy after the initial cancer treatment, the optimal timing following surgical resection is poorly defined. Many clinicians support starting chemotherapy within 6 weeks after surgery. But factors such as postoperative complications may affect a patient's ability to tolerate chemotherapy.

Daniel J. Boffa, MD, of the Yale School of Medicine, New Haven, Conn., and coauthors used data from patients in the National Cancer Database (NCDB) to examine the relationship between the timing of postoperative chemotherapy and 5-year mortality.

The study of 12,473 patients with stage I, II, or III disease who received multi-agent chemotherapy suggests that later chemotherapy (57 to 127, postoperatively) was not associated with increased risk of death and later chemotherapy also was associated with a lower risk of death compared with those patients treated only with surgery, according to the results.

Limitations of the study include that it cannot establish causality.

Patients with completely resected NSCLC in the NCDB continue to benefit from adjuvant chemotherapy when given outside the traditional postoperative window. Clinicians should still consider chemotherapy in appropriately selected patients that are healthy enough to tolerate it, up to four months after NSCLC resection. Researchers concluded further study is warranted to confirm these findings.

Copyright © 2017 Wolters Kluwer Health, Inc. All rights reserved.
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