Intriguingly, in contrast to the positive correlation between NF2 and CD20 expression in MPM described above, a limited percentage (11%) of CD20+ tumor-infiltrating lymphocytes (TILs) were observed in meningiomas and schwannomas compared with other T lymphocytes, such as CD68+, CD3+, or CD8+ TILs151. The gene discussed is NF2; the disease is schwannoma.