Chromosomal aberrations in esophageal squamous cell carcinoma among Chinese: gain of 12p predicts poor prognosis after surgery

Kwong, Dora, Lam, Alfred, Guan, X.Y., Law, Simon, Tai, Amy, Wong, John, and Sham, Jonathon (2004) Chromosomal aberrations in esophageal squamous cell carcinoma among Chinese: gain of 12p predicts poor prognosis after surgery. Human Pathology, 35 (3). pp. 309-316.

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Abstract

Sixty primary esophageal squamous cell carcinomas (ESCCs) were evaluated for cytogenetic changes by comparative genomic hybridization (CGH). Recurrent chromosomal aberrations were correlated with stage and clinical outcome after esophagectomy to identify cytogenetic changes that are of prognostic significance. Chromosomal aberrations were found in 52 (86.7%) cases. The most frequently detected chromosomal gains involved 3q (67.3%), 8q (57.7%), 5p (51.9%), 7q (28.8%), 15q (28.8%), 20p (21.2%), 20q (28.8%), 1q (26.9%), 7p (26.9%), 2p (23.1%), and 12p (23.1%). Chromosome 12p was most frequently involved in high-level amplification. Six of the 12 cases with gain in 12p showed high-level amplification and the minimum overlapping region localized to 12pter-p13. The most frequently detected chromosomal loss involved 3p (46.2%), 4q (26.9%), 4p (23.1%), 3q (19.2%), 9p (17.3%), 19p (17.3%), and whole 13 (15.4%). No significant correlation was found between the recurrent chromosomal aberrations and pathological stage of ESCC. Univariate analysis demonstrated that late pathological stage (III and IV), gain in 12p, and loss in 3p are associated with poor relapse-free survival. Multivariate analysis confirmed gain in 12p as independent prognosticator for relapse-free survival after esophagectomy besides pathological stage. We conclude that chromosomal aberrations are common in ESCC. Gain in 12p is indicative of poor prognosis after esophagectomy, and combined modality therapy would be indicated in these patients.

Item ID: 6393
Item Type: Article (Refereed Research - C1)
Keywords: cancer; carcinoma; comparative genomic hybridization; esophageal carcinoma; prognosis
ISSN: 1532-8392
Date Deposited: 22 Jan 2010 00:48
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1199 Other Medical and Health Sciences > 119999 Medical and Health Sciences not elsewhere classified @ 100%
SEO Codes: 92 HEALTH > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920102 Cancer and Related Disorders @ 100%
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