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JYMS : Journal of Yeungnam Medical Science

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Case Report
Efficacy of epidermal growth factor receptor-tyrosine kinase inhibitors for patient with leptomeningeal metastasis of epidermal growth factor receptor mutant non-small cell lung cancer.
Jong Sik Lee, Kyung Ann Lee, Kang Hoon Lee, Sun Young Moon, In Ae Kim, Sung Jin Jeon, Jae Ki Min, Hee Joung Kim, Kye Young Lee
Yeungnam Univ J Med. 2016;33(1):64-67.   Published online June 30, 2016
DOI: https://doi.org/10.12701/yujm.2016.33.1.64
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AbstractAbstract PDF
We report on a 64-year-old man with leptomeningeal metastasis (LM) from an epidermal growth factor receptor (EGFR)-mutated adenocarcinoma of the lung. He was treated with paclitaxel, cisplatin. After completion of chemotherapy, he complained of headache, nausea, and vomiting. EGFR-mutated tumor cells were identified from the cerebrospinal fluid (CSF). Second-line therapy with gefitinib, methotrexate was started. After receiving gefitinib for 4 weeks, he had no more headaches or vomiting. Eleven months after initiation of gefitinib, he developed headache and nausea. Chest computed tomography showed aggravation of bone metastasis. Third-line therapy was started with gemcitabine and carboplatin. Two weeks later, he experienced disorientation. After a fourth relapse within the central nervous system, the therapy was switched to erlotinib and significant improvement of LM was achieved. This case shows that LM can be diagnosed by detecting EGFR mutation in CSF and EGFR tyrosine kinase inhibitors are effective for LM from EGFR mutant non-small cell lung cancer.
Original Article
Early or Late Gefitinib, Which is Better for Survival?: Retrospective Analysis of 228 Korean Patients with Advanced or Metastatic NSCLC.
Dong Gun Kim, Min Kyoung Kim, Sung Hwa Bae, Sung Ae Koh, Sung Woo Park, Hyun Je Kim, Myung Jin Kim, Hyo Jin Jang, Kyung Hee Lee, Kwan Ho Lee, Jin Hong Chung, Kyung Chul Shin, Hun Mo Ryoo, Myung Soo Hyun
Yeungnam Univ J Med. 2011;28(1):31-44.   Published online June 30, 2011
DOI: https://doi.org/10.12701/yujm.2011.28.1.31
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AbstractAbstract PDF
BACKGROUND
The optimal timing of treatment with EGFR-tyrosine kinase inhibitors (EGFR-TKI) in NSCLC patients has not yet been determined. METHODS: We separated 228 patients with advanced/metastatic NSCLC treated with gefitinib into an early gefitinib group (patients who received gefitinib as first- or second-line treatment) and a delayed gefitinib group (patients who received gefitinib as third or fourth-line treatment) and attempted to determine whether the timing of gefitinib treatment affected clinical outcomes. RESULTS: Median overall survival (OS), progression free survival (PFS), and median OS from first-line treatment of advanced/metastatic disease (OSt) for 111 patients in the early gefitinib group were 6.2 months, 3.3 months, and 11.6 months. However, median OS, PFS, and OSt for 84 patients in the delayed gefitinib group were 7.8 months, 2.3 months, and 22.7 months. No differences in OS and PFS were observed between the 2 groups. However, OSt was significantly longer in the delayed gefitnib group. Timing of gefitinib therapy was one of the independent predictors of OSt. Hb > or = 10 g/dl, and having never smoked, and ECOG performance status < or =1 were independent predictors of better PFS. CONCLUSION: Deferral of gefitinib therapy in patients with advanced or metastatic NSCLC may be preferable if they are able to tolerate chemotherapy.
Case Report
A Case of Gefitinib (Iressa(R))-associated Tumor Lysis Syndrome in Adenocarcinoma of the Lung.
Kyu Jin Kim, Won Jong Park, Sung Ken Yu, Kyeong Cheol Shin, Jin Hong Chung, Myung Soo Hyun, Kwan Ho Lee
Yeungnam Univ J Med. 2006;23(2):221-226.   Published online December 31, 2006
DOI: https://doi.org/10.12701/yujm.2006.23.2.221
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AbstractAbstract PDF
The tumor lysis syndrome has been described as biochemical disturbances associated with rapid destruction of tumor cells and subsequent synchronized massive release of cellular breakdown products sufficient to overwhelm excretory mechanisms and the body's normal reutilization capacity. The cardinal signs of the tumor lysis syndrome are hyperkalemia, hyperphosphatemia, hypocalcemia and hyperuricemia. Gefitinib (Iressa) is an oral, selective epidermal growth factor receptor (EGFR) inhibitor that has activity in female, non-smoker and non-small cell lung cancer with an EGFR mutation. Gefitinib is a well tolerated drug with few side effects. It has been associated with skin rash, diarrhea, nausea, a decrease in liver function and interstitial lung disease. However, there is no prior report of the tumor lysis syndrome associated with gefitinib. We report a case of a 54 year-old woman who developed tumor lysis syndrome that might have been induced by gefitinib after the treatment of adenocarcinoma of lung with an EGFR mutation.

JYMS : Journal of Yeungnam Medical Science
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