MYD88 and rheumatoid arthritis: Interestingly, despite comparable disease control, RA patients in sustained clinical and ultrasound remission with BMI ≥ 25 Kg/m2 showed significant over-expression of MyD88 (2.49 fold; p = 0.04) compared to RA patients in sustained clinical and ultrasound remission with BMI < 25 Kg/m2 (Fig. 5G).