Correlation of NC3r with total proteins (r = -0.340, p = 0.003), albumin (r = -0.584, p < 0.001), C3 (r = -0.474, p < 0.001), anti-ds-DNA Ab (r = 0.283, p = 0.019), proteinuria g/24h (r = 0.586, p < 0.001), and SLEDAI/r (r = 0.559, p < 0.001) was significant in the A-LN group. Here, C3 is linked to lobular neoplasia.