Putative protective genomic variation in the Lithuanian population

Area of Science:

• Population genetics
• Human evolution
• Genomics

Background:

• Genomic effect variants related to survival and disease protection exhibit population-specific variations due to microevolutionary forces.
• Understanding these variations is crucial for comprehending disease etiology and developing personalized medicine.

Purpose of the Study:

• To analyze the diversity and distribution of genetic effect variants within a Lithuanian population.
• To investigate potential positive selection acting on these variants and their association with disease protection.

Main Methods:

• Genotyping of 475 Lithuanian individuals using high-throughput scanning and sequencing.
• Allele frequency analysis of pre-selected effect variants against the single nucleotide polymorphism database.
• Comparative analysis with primate species to identify derived and potentially protective alleles.
• Positive selection analysis to confirm protective effects.

Main Results:

• Four variants showed significantly different frequencies compared to European populations; two others were borderline significant.
• A specific effect variant in the SLC30A8 gene was identified as potentially protective against type 2 diabetes.
• The study highlights a paradox of high type 2 diabetes rates alongside potentially protective variants in the Lithuanian population.

Conclusions:

• Identification of population-specific genomic variants advances understanding of microevolutionary processes and disease mechanisms.
• Further research is needed to elucidate interactions between environmental factors, regulatory regions, and genome variation in disease.
• These findings represent a step towards personalized medicine approaches tailored to specific populations.