[Genetic tests are available but they are based on incomplete data].

Area of Science:

• Genetics
• Bioinformatics
• Personalized Medicine

Context:

• Direct-to-consumer (DTC) genome-wide profiling is increasingly popular.
• These tests provide genetic risk estimates for multifactorial diseases.
• Consumers expect individualized risk assessments.

Purpose:

• To evaluate the scientific basis and limitations of DTC genetic risk estimates.
• To highlight the incomplete nature of current genetic data used in these tests.
• To emphasize the need for understanding additional contributing factors beyond common genetic markers.

Summary:

• DTC genome-wide profiling relies on scientifically valid but incomplete genetic data.
• Current risk estimates for multifactorial diseases are based on a small fraction of heritability explained by common genetic markers.
• The validity of these risk estimates is limited by the omission of other significant contributing factors.

Impact:

• Informs consumers about the limitations of current DTC genetic testing.
• Highlights the need for further research into multifactorial disease etiology.
• Promotes a more comprehensive understanding of genetic risk assessment.