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This study analyzed the human complement component 3 (C3) gene in 1,055 Greeks, finding common C3S and C3F variants. Allele frequencies align with other Caucasian populations, with rare variants observed in three individuals.
Area of Science:
- Human genetics
- Immunology
- Population genetics
Background:
- The complement system is crucial for innate immunity.
- Polymorphisms in complement components can influence immune responses.
- Understanding C3 gene frequencies is important for population genetics and disease association studies.
Purpose of the Study:
- To investigate the genetic polymorphism of the third component of human complement (C3).
- To determine the allele frequencies of C3 variants in a healthy Greek population.
- To compare these frequencies with those reported in other Caucasian populations.
Main Methods:
- Blood samples were collected from 1,055 unrelated healthy individuals across nine regions in Greece.
- C3 polymorphism was analyzed using established genetic typing methods.
- Allele frequencies for C3S and C3F were calculated.
Main Results:
- The estimated gene frequencies for C3S were 0.786 and for C3F were 0.211.
- Three individuals (0.28%) exhibited rare variant C3 types.
- The observed allele frequencies are comparable to those found in other Caucasian populations.
Conclusions:
- The C3 gene polymorphism in the studied Greek population is similar to other Caucasian groups.
- The study provides valuable data on C3 allele distribution in Greece.
- Further research could explore the functional implications of rare C3 variants.
Abstract:
The polymorphism of the third component of the human complement (C3) was investigated in a sample of 1,055 unrelated healthy individuals from nine different areas of Greece. The estimated gene frequencies were: C3S = 0.786 and C3F = 0.211. Three individuals were found to have rare variant C3 types. The allele frequencies resemble those reported for other Caucasian populations.