COL3A1 and systemic lupus erythematosus: Additionally, according to co‐analysis with COL3A1 in heatmap, propanoate metabolism was selected form propanoate metabolism (R = −0.140, P < 0.001), systemic lupus erythematosus (R = 0.130, P < 0.001) and proteasome (R = 0.100, P < 0.001).