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Familial cancer of unknown primary

Elie Rassy1,2, Joseph Kattan1, Nicholas Pavlidis3

  • 1Department of Cancer Medicine, Gustave Roussy Institut, Villejuif, France.

International Journal of Clinical Oncology
|June 17, 2019
PubMed

Insights

Cancer of unknown primary site (CUP) is a deadly disease. Familial CUP suggests it may be a group of metastatic tumors, guiding better screening and risk factor identification for improved outcomes.

Area of Science:

  • Oncology
  • Genetics
  • Cancer Research

Background:

  • Cancer of unknown primary site (CUP) presents as metastatic disease without a clear origin, posing diagnostic and therapeutic challenges.
  • The exact carcinogenesis of CUP remains poorly understood, hindering the development of effective treatments and survival improvements.
  • Current hypotheses suggest CUP is either a collection of metastatic tumors with unidentified primaries or a distinct entity with unique genetic characteristics.

Discussion:

  • Familial CUP cases support the hypothesis that CUP comprises metastatic tumors with common genetic predispositions shared with known primary cancers.
  • Investigating family history and environmental factors in familial CUP may aid in identifying the primary tumor site.
  • Understanding the genetic basis of CUP is crucial for differentiating between these hypotheses and informing clinical strategies.

Key Insights:

  • Familial clustering of CUP provides evidence supporting the 'metastatic tumors with unidentified primaries' hypothesis.
  • Genetic predisposition factors may link CUP to known primary cancers, offering clues for diagnosis.
  • Detailed family and environmental history are valuable tools for orienting primary tumor identification.

Outlook:

  • Further research into the genetic landscape of familial CUP is warranted.
  • Clinical strategies should incorporate thorough family history and environmental risk assessments.
  • Promoting smoking cessation and adherence to general cancer screening guidelines are recommended for CUP prevention and early detection.
Keywords:
CUPCancer of unknown primaryFamilialGenetics

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