No causal relationships were found for genetically predicted Cystatin B (ebi‐a‐GCST90085722), Cystatin B (prot‐b‐3), Cystatin D, Cystatin F, Cystatin M (prot‐a‐703), or Cystatin M (prot‐a‐704) with squamous cell lung carcinoma (all p > 0.05; Table 1). The gene discussed is CST6; the disease is squamous cell lung carcinoma.