minor risk allele - (May/31/2020 )

Hi, Im new to GWAS studies and would appreciate any help in understanding risk alleles associated with diseases.

kindly refer to the attached figure

In the above table for PNPLA3: G is the risk allele. GC and GG genotypes were significantly associated with increased risk of NAFLD. Is this because more samples with NAFLD have G allele compared to healthy samples and this difference is significant?

Also, is the risk higher (more significant) with GG than with GC genotype for NAFLD?

Thank you

The above is referring to table 2 from this link:  https://www.frontiersin.org/files/Articles/211420/fgene-07-00140-HTML/image_m/fgene-07-00140-t002.jpg

From ref: Wang X, Liu Z, Wang K, Wang Z, Sun X, Zhong L, Deng G, Song G, Sun B, Peng Z and Liu W (2016) Additive Effects of the Risk Alleles of PNPLA3 and TM6SF2 on Non-alcoholic Fatty Liver Disease (NAFLD) in a Chinese Population. Front. Genet. 7:140. doi: 10.3389/fgene.2016.00140