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Year : 2017  |  Volume : 54  |  Issue : 1  |  Page : 215-222

Retrospective analysis of icotinib neoadjuvant therapy of 63 lung cancer patients

Department of Thoracic Surgery, PLA General Hospital, Beijing 100853, China

Correspondence Address:
Dr. T Wang
Department of Thoracic Surgery, PLA General Hospital, Beijing 100853
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0019-509X.219585

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OBJECTIVE: This study aims to explore the feasibility of icotinib neoadjuvant therapy for nonsmall cell lung cancer (NSCLC). MATERIALS AND METHODS: This was a retrospective analysis of the clinical data for 63 NSCLC patients (61 cases of adenocarcinoma and two cases of squamous cell carcinoma) receiving surgical resection of lung lesions after oral intake of icotinib from December 2011 to November 2013 in the PLA General Hospital. Preoperative oral intake of the patients was icotinib 125 mg tid, drug side effects were evaluated according to the American National Cancer Institute Common Toxicity Criteria Version 4.0; computed tomography scan was done on the day taking medicine and 2 weeks later to determine tumor changes. After oral intake of Icotinib for 2 to 22 weeks (5 cases for 2 weeks,13 cases for 3 to 22 weeks), all patients receive surgical resection of lung cancer lesions, and testing of removed tumor to evaluate the epidermal growth factor receptor (EGFR) gene mutation status was performed by fluorescence polymerase chain reaction. The patients with sensitive EGFR mutations receive Icotinib as postoperative adjuvant therapy. RESULTS: Side effects of medication within 2 weeks included rash (44.4%, 28/63), dry skin (34.9%, 22/63), diarrhea (14.3%, 9/63), and oral ulcer (1.6%, 1/63); there were no icotinib-associated thoracic surgery complications during the perioperational period. 71.4% patients (45/63) achieve an average reduction of 23.5% ±10.7%(10%-53.5%) after 2 weeks medication of Icotinib(regressive tumor[RT]) .28.6% patients(18/63) achieve stable tumor(ST),enlargement of 8.7% to reduction of 8.7% of the maximum diameter of lung cancer after 2 weeks medication of Icotinib. Of the RT group, 68.9% (31/45) of the tumors were detected with EGFR-sensitive mutation (exon 19 or 21 mutation), 24.4% (11/45) with wild-type EGFR, and three cases of exon 20 mutation. Of the ST group, 77.8% (14/18) were detected with wild-type EGFR, three cases of exon 20 mutation, and one case of exon 19 deletion mutation (tumor reduction by 7.9%). 45 cases in RT group and 1 case with EGFR 19 exon metation in ST group receive Icotinib as adjuvant therapy. Among 45 cases in RT group and 18 cases in ST group, there was no difference in gender, age, smoking history, tumor diameter, tumor differentiation degree, and incidence of side effects (P = 0.076). There was significant difference (P < 0.0001) in terms of symptom remission rate after medication and EGFR gene-sensitive mutation rate in RT and ST groups. CONCLUSION: Icotinib neoadjuvant therapy for NSCLC is safe and feasible, and the reactivity of lung cancer patients to icotinib can be determined within 2 weeks of medication. People sensitive to preoperative selection of drugs can more accurately determine the sensitivity of tumors to drugs, thus providing evidence for postoperative adjuvant therapy.


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