CD4 and neuroblastoma: As an exposure, "resting CD4 regulatory T cell% CD4 + T cell (ebi‐a‐GCST90001482)" showed consistency in both "prot‐a‐2003" and "ebi‐a‐GCST004883" NB outcomes (Figure 2A,B), indicating that with an increase in resting CD4 regulatory T cell% CD4 + T cell, the likelihood of NB occurrence and development increased.