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How do haplotypes help scientists find genetic variants linked to disease?
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Human Genome Project
The Human Genome Project, which operated from 1990 to 2003, provided researchers with basic information about the genetic content of the human organism, opening new avenues of discovery in fields such as cancer research.
A haplotype is a set of alleles or genes located close together on a single chromosome that are typically inherited as a unit. Following the Human Genome Project, scientists utilized these regions to streamline the search for genetic variants linked to human disease.123
Analyzing millions of individual single nucleotide polymorphisms (SNPs) is inefficient. Because the SNPs within a haplotype region are inherited together, researchers only need to identify a few "tag" SNPs to represent the entire region. This allows scientists to:1
- Increase Efficiency: Quickly sort through the vast human genome to pinpoint variants associated with specific traits or diseases, such as cancer or heart disease.1
- Facilitate Discovery: Use genome-wide association studies to link these haplotype regions to disease risk.13
- Advance Medicine: Characterize disease-associated SNPs to improve diagnostic techniques and develop targeted drugs.1
While this research is vital for medical progress, it is ethically imperative to ensure that genetic data is used responsibly to prevent the stigmatization or discrimination of specific ethnic groups.1