Loss of heterozygosity (LOH) in non-small cell lung cancer: Difference between adenocarcinoma and squamous cell carcinoma

Ichiro Yoshino, Atsushi Osoegawa, Tomofumi Yohena, Toshifumi Kameyama, Eiji Oki, Shinya Oda, Yoshihiko Maehara

Research output: Contribution to journalArticle

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Abstract

Background: In non-small cell lung cancer, a loss of heterozygosity (LOH) is frequently observed; however, few studies have investigated the differences in the LOH status between adenocarcinoma and squamous cell carcinoma. Patients and methods: In a consecutive series of 49 patients with adenocarcinomas and 22 patients with squamous cell carcinomas, the LOH in tumors was analyzed using polymerase chain reaction employing 5 fluorescence-labeled dinucleotide markers (D2S123, D5S107, D10S197, D11SS904, D13S175) and an autosequencer. Results: LOH was more frequently observed in squamous cell carcinoma (20 of 22, 90%) than in adenocarcinomas (33 of 49, 67%) (P = 0.0348), and the number of LOH per patient was also higher in the patients with squamous cell carcinoma (2.2±1.4) than in those with adenocarcinoma (1.5±1.2, P = 0.037). In adenocarcinomas, the number of LOH per patients correlated significantly with the pack-year index, whereas the pathological stage significantly affected the number of LOH in squamous cell carcinomas. Conclusion: The presence of LOH is relatively uncommon in adenocarcinoma of the lung; however, the incidence of LOH tends to be associated with the smoking status.

Original languageEnglish
Pages (from-to)308-312
Number of pages5
JournalRespiratory Medicine
Volume99
Issue number3
DOIs
Publication statusPublished - Mar 1 2005

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Loss of Heterozygosity
Non-Small Cell Lung Carcinoma
Squamous Cell Carcinoma
Adenocarcinoma
Fluorescence
Smoking
Polymerase Chain Reaction
Incidence

All Science Journal Classification (ASJC) codes

  • Pulmonary and Respiratory Medicine

Cite this

Loss of heterozygosity (LOH) in non-small cell lung cancer : Difference between adenocarcinoma and squamous cell carcinoma. / Yoshino, Ichiro; Osoegawa, Atsushi; Yohena, Tomofumi; Kameyama, Toshifumi; Oki, Eiji; Oda, Shinya; Maehara, Yoshihiko.

In: Respiratory Medicine, Vol. 99, No. 3, 01.03.2005, p. 308-312.

Research output: Contribution to journalArticle

Yoshino, Ichiro ; Osoegawa, Atsushi ; Yohena, Tomofumi ; Kameyama, Toshifumi ; Oki, Eiji ; Oda, Shinya ; Maehara, Yoshihiko. / Loss of heterozygosity (LOH) in non-small cell lung cancer : Difference between adenocarcinoma and squamous cell carcinoma. In: Respiratory Medicine. 2005 ; Vol. 99, No. 3. pp. 308-312.
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