Marked variation in predicted and observed variability of tandem repeat loci across the human genome
2008

Variation in Tandem Repeat Loci Across the Human Genome

Sample size: 209214 publication Evidence: moderate

Author Information

Author(s): O'Dushlaine Colm T, Shields Denis C

Primary Institution: Royal College of Surgeons in Ireland

Hypothesis

Can a predictive model for tandem repeat variability be developed using whole genome shotgun sequences?

Conclusion

The study found that variability among tandem repeats in the genome can be modeled effectively, revealing patterns of excess and deficit in certain chromosomes.

Supporting Evidence

  • Predicted heterozygosity correlated with heterozygosity in the CEPH polymorphism database.
  • A multivariate logistic model accounted for 36% of the variation in the WGS data.
  • Validation studies revealed high concordance with the model's predictions.

Takeaway

This study looks at how certain DNA sequences, called tandem repeats, can change a lot in different people, and it shows how we can predict these changes using computer models.

Methodology

A multivariate statistical model was applied to predict tandem repeat variability using whole genome shotgun data.

Potential Biases

False positives may arise from genome assembly artifacts and sequencing errors.

Limitations

The study acknowledges potential inaccuracies due to sequence errors and biased sampling in the WGS data.

Statistical Information

P-Value

p<0.0005

Statistical Significance

p<0.0005

Digital Object Identifier (DOI)

10.1186/1471-2164-9-175

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