TY - JOUR
T1 - Loss of heterozygosity (LOH) in non-small cell lung cancer
T2 - Difference between adenocarcinoma and squamous cell carcinoma
AU - Yoshino, Ichiro
AU - Osoegawa, Atsushi
AU - Yohena, Tomofumi
AU - Kameyama, Toshifumi
AU - Oki, Eiji
AU - Oda, Shinya
AU - Maehara, Yoshihiko
PY - 2005/3
Y1 - 2005/3
N2 - 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.
AB - 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.
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U2 - 10.1016/j.rmed.2004.08.008
DO - 10.1016/j.rmed.2004.08.008
M3 - Article
C2 - 15733506
AN - SCOPUS:13944258204
SN - 0954-6111
VL - 99
SP - 308
EP - 312
JO - Respiratory Medicine
JF - Respiratory Medicine
IS - 3
ER -
