What is the fine-grained topic of the following text: Two protective, low-frequency, non-synonymous variants were significantly associated with a decrease in age-related macular degeneration (AMD)risk: A307V in PELI3 and N1050Y in CFH .We also identified a strong protective signal for a common variant (rs8056814) near CTRB1 associated with a decrease in AMD risk (logistic regression: OR = 0.71, P = 1.8 x 10-07). Only return the topic.
The association of specific genetic variants with the risk of age-related macular degeneration.