Of the disease‐related features at baseline, higher serum albumin levels (P = .0086) and higher serum C3 levels (P = .0477) were significantly related to delayed‐onset LN, and significantly higher SLEDAI‐2K scores at the time of onset of LN (P =.0069) were also observed in the delayed‐onset LN group. The gene discussed is C3; the disease is lobular neoplasia.