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Finding prostate cancer susceptibility genes.

Elaine A Ostrander1, Kyriacos Markianos, Janet L Stanford

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Prostate cancer susceptibility involves multiple genetic loci. New genome-wide scan strategies and family subset definitions are needed to overcome challenges in genetic linkage analysis for this heterogeneous disease.

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Area of Science:

  • Genetics
  • Oncology
  • Medical research

Background:

  • Prostate cancer exhibits genetic heterogeneity with multiple susceptibility loci.
  • Traditional genetic studies stratify families to enhance homogeneity.
  • Limited availability of parental DNA samples hinders linkage analysis for late-onset diseases like prostate cancer.

Purpose of the Study:

  • To address limitations in prostate cancer genetic mapping due to locus heterogeneity and sample availability.
  • To propose strategies for improving the detection of prostate cancer susceptibility loci.

Main Methods:

  • Review of traditional genome-wide scan methodologies for complex diseases.
  • Discussion of challenges posed by late-onset diseases and missing parental DNA.
  • Consideration of denser genome-wide scans and novel family stratification techniques.

Main Results:

  • Standard genome scans lack sufficient power for prostate cancer linkage analysis.
  • Heterogeneity and sample limitations reduce the effectiveness of current mapping efforts.
  • Denser scans and refined family selection are crucial for identifying disease-associated loci.

Conclusions:

  • Enhanced genome-wide scans across diverse ethnic groups are necessary.
  • Development of new methods for defining homogenous family subsets is essential.
  • Improved strategies are required to effectively map prostate cancer susceptibility genes.