Effect of Polymorphisms in the FCN1, FCN2, and FCN3 Genes on the Susceptibility to Develop Rheumatoid Arthritis: A Systematic Review

Table 1

Data from studies included in the systematic review.

Author	Year	Gene	Genetic variants	Geographic region	Study type	Source of controls	NOS	Number of cases	Number of controls
Pieczarka et al. [11]	2015	FCN1; FCN2	rs2989727; rs1071583; rs17514136; rs3124954; rs7851696	Brazil	Cases and controls	Community	9	184	264
Addobbati et al. [12]	2020	FCN1; FCN3	rs2989727; rs10120023; rs17039495; rs10117466; rs10858293; rs532781899; rs28362807; rs4494157	Brazil	Cases and controls	Community	9	148	160
Vander Cruyssen et al. [13]	2007	FCN1; FCN2; FCN3	rs2989727; rs1071583; rs7865453; ss32469537; ss32469544; rs7851696; rs3813800	Belgium	Cases and controls	Community	9	338	595

The variants are described according to their RS code (RefSNP) assigned in dbSNP (genetic variant database of the US National Institutes of Health). Available at https://www.ncbi.nlm.nih.gov/snp/. Score on the Newcastle-Ottawa scale (NOS).