Specifically, the average osteocalcin level in RA patients who are positive for MAP was 0.60 ± 0.31 ng/mL compared to 3.85 ± 1.31 ng/mL (p-value < 0.05) in RA patients who are negative for MAP DNA, as shown in Figure 1C. Here, BGLAP is linked to rheumatoid arthritis.