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© Jacob SEELER & Anne DEJEAN, Institut Pasteur
Immunostaining of PML nuclear bodies involved in acute promyelocytic leukemia
Publication : Oncogene

Distinct chromosomal abnormality pattern in primary liver cancer of non-B, non-C patients

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Oncogene - 01 Aug 2000

Marchio A, Pineau P, Meddeb M, Terris B, Tiollais P, Bernheim A, Dejean A

Link to Pubmed [PMID] – 10949927

Oncogene 2000 Aug;19(33):3733-8

To discriminate among the chromosomal abnormalities associated with the etiology of hepatocellular carcinoma (HCC), we performed a comparative genomic hybridization (CGH) analysis on 34 HCCs resected on non-cirrhotic livers from patients serologically negative for both hepatitis B (HBV) and C (HCV) viruses. The results were compared to those of a previous analysis of 50 HCCs selected on the basis of their positivity for HBV infection. The majority of the abnormalities found in the HBV positive cases (losses of chromosome arms 1p, 8p, 6q, 13q and 14q and gains of 1q, 8q, 6p and 17q) were similarly detected in the virus negative specimens. In contrast, a significant decrease (40% on average) was observed for losses at 4q, 16q and 17p in non-viral HCC samples, suggesting that these abnormalities are tightly associated with HBV infection. Thus, in addition to a common pathway towards malignancy, a subset of alterations may preferentially contribute to virus-induced carcinogenesis. In a parallel CGH study of 10 fibrolamellar carcinomas, a rare subtype of HCC, we found in six out of the seven informative cases, gains of chromosome arm 1q. This region, which is also preferentially amplified in non fibrolamellar tumors (58%), may contain an essential proto-oncogene commonly implicated in liver carcinogenesis.

https://www.ncbi.nlm.nih.gov/pubmed/10949927