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[CUP syndrome: molecular pathogenesis and biology]
A Krämer1, S Gattenlöhner, K Neben
1Klinische Kooperationseinheit für Molekulare Hämatologie und Onkologie des Deutschen Krebsforschungszentrums und der Medizinischen Klinik und Poliklinik V, Universität Heidelberg, Heidelberg, Deutschland. Alwin_Kraemer@med.uni-heidelberg.de
Der Pathologe
|January 10, 2009
Summary
Carcinoma of unknown primary (CUP) involves cancer spread without a clear origin. Gene expression and genomic profiling show promise for identifying the primary tumor site in CUP patients.
Area of Science:
- Oncology
- Genomics
- Molecular Biology
Context:
- Carcinoma of unknown primary (CUP) accounts for 3-5% of cancer diagnoses.
- CUP presents as metastasis without an identifiable primary tumor site after extensive workup.
- The early metastatic capacity and lack of detectable primary tumors in CUP remain poorly understood.
Purpose:
- To explore the molecular pathogenesis and biology of Carcinoma of unknown primary (CUP).
- To investigate the utility of gene expression and genomic profiling in identifying the primary site of CUP.
- To enhance the diagnostic and management strategies for CUP patients.
Summary:
- CUP is characterized by heterogeneous tumors with early metastatic potential.
- Common chromosomal aberrations include those on chromosomes 1, 6, 7, and 11.
- Epidermal growth factor receptor is frequently expressed (66-75%), while Her2/neu overexpression and p53 mutations are rare.
Impact:
- Gene expression microarrays and genomic profiling offer a promising approach for primary site identification in CUP.
- These molecular tools can significantly aid in the clinical management of CUP patients.
- Advancing the understanding of CUP's molecular underpinnings can lead to improved targeted therapies.
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