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Published in: Cancer Chemotherapy and Pharmacology 2/2011

01-02-2011 | Original Article

Serum levels of surfactant protein D predict the anti-tumor activity of gefitinib in patients with advanced non-small cell lung cancer

Authors: Hiroyuki Yamaguchi, Hiroshi Soda, Yoichi Nakamura, Mineyo Takasu, Nanae Tomonaga, Hirofumi Nakano, Seiji Doi, Katsumi Nakatomi, Seiji Nagashima, Hiroshi Takatani, Minoru Fukuda, Tomayoshi Hayashi, Kazuhiro Tsukamoto, Shigeru Kohno

Published in: Cancer Chemotherapy and Pharmacology | Issue 2/2011

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Abstract

Purpose

Gefitinib is an epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) that has dramatic effects in selective patients with non-small cell lung cancer (NSCLC). A simple non-invasive method for predicting the efficacy of gefitinib is preferable in clinical settings. In this study, we evaluated prospectively whether surfactant protein-A (SP-A) and -D (SP-D) may be new conventional predictors of the efficacy of gefitinib treatment.

Methods

We measured serum SP-A and SP-D levels on days 0 and 29 in 40 patients with advanced NSCLC treated with 250 mg gefitinib daily. Eligibility criteria included performance status ≤3, age ≤80 years, and stage IIIB–IV disease. In addition, EGFR mutations were analyzed in 24 patients.

Results

Multivariate analysis showed that favorable progression-free survival (PFS) after gefitinib treatment was associated with adenocarcinoma and high serum SP-D levels before treatment. EGFR mutation analysis of 24 patients showed that 16 patients had exon 19 deletion and/or exon 21 point mutations. EGFR mutations were significantly correlated with response to gefitinib and serum SP-D levels before treatment was significantly high in patients with the EGFR mutations. Serum SP-A levels were not associated with PFS.

Conclusions

The present study showed that measurement of serum SP-D levels before treatment in patients with NSCLC may be a new surrogate marker for predicting the response to gefitinib.
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Metadata
Title
Serum levels of surfactant protein D predict the anti-tumor activity of gefitinib in patients with advanced non-small cell lung cancer
Authors
Hiroyuki Yamaguchi
Hiroshi Soda
Yoichi Nakamura
Mineyo Takasu
Nanae Tomonaga
Hirofumi Nakano
Seiji Doi
Katsumi Nakatomi
Seiji Nagashima
Hiroshi Takatani
Minoru Fukuda
Tomayoshi Hayashi
Kazuhiro Tsukamoto
Shigeru Kohno
Publication date
01-02-2011
Publisher
Springer-Verlag
Published in
Cancer Chemotherapy and Pharmacology / Issue 2/2011
Print ISSN: 0344-5704
Electronic ISSN: 1432-0843
DOI
https://doi.org/10.1007/s00280-010-1325-x

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