CD6 and spondylolisthesis: Spondylolisthesis/spondylolysis also had no causal effect on the levels of STAMBP (p = 0.5197), CD6 isoform (p = 0.7240), MCP2 (p = 0.5843), and LAP‐TGF‐β1 (p = 0.0879) (Figure S21).