Abstract:
:In order to optimize the management of patients with renal cell carcinoma (RCC) it is important to define the genetic risk for metastatic disease. In this study we performed comparative genomic hybridization (CGH) on metastatic tumors aiming at the identification of genetic alterations associated with metastatic disease. We analyzed 46 renal tumors along with their metastases, and 15 non-metastatic renal tumors. Tumors were classified pathologically according to the Heidelberg classification of RCC, and staged according to the TNM-system. Standard CGH was performed using microdissected archival tissues and DOP-PCR. The average numbers of chromosomal aberrations per tumor were 3.0, 2.1 and 3.9 in patients without metastasis, in patients who developed metastases after a two-year latency period (late onset of metastatic disease) and in patients who developed metastases within two years after therapy of the primary tumor (early onset of metastatic disease). CGH revealed chromosomal aberrations in 91% of primary metastatic tumors. Deletions or losses of chromosomes 9 (26% vs 6%), 10 (21% vs 6%) and 18 (23% vs 0) and 17 (28% vs 7%) occurred more often in metastatic tumors than in non-metastatic tumors. Furthermore, these aberrations were more common in patients with early metastases. CGH analysis of 40 pairs of primary RCCs and their corresponding metastasis revealed similar aberrations in 70% of cases. In 30%, however, metastases showed additional chromosomal aberrations not detected in the corresponding primary tumors. In conclusion, we identified genetic alterations associated with metastatic disease in RCC which could be useful for predicting prognosis. Genetic changes leading to metastases occurred early in tumorigenesis of metastatic tumors.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Junker K,Moravek P,Podhola M,Weirich G,Hindermann W,Janitzky V,Schubert Jdoi
10.3892/ijo.17.5.903keywords:
subject
Has Abstractpub_date
2000-11-01 00:00:00pages
903-8issue
5eissn
1019-6439issn
1791-2423journal_volume
17pub_type
杂志文章abstract::The Raf/MEK/ERK signaling cascade has been extensively studied for its roles in growth and differentiation of a variety of cell types. Confliciting evidence exists regarding the function of classical MAPK signaling with regards to the development of chemotherapeutic drug resistance; some reports describe an pro-surviv...
journal_title:International journal of oncology
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abstract::Release of DNA fragments into the culture supernatant of human promyelocytic cell line HL-60 was investigated. The released DNA has previously been shown to have a strong immunosuppressive effect on the proliferation of mitogen-stimulated human peripheral lymphocytes and some cancer cell lines. In this study, HL-60 ce...
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journal_title:International journal of oncology
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pub_type: 临床试验,杂志文章
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