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Appl Immunohistochem Mol Morphol
Wolters Kluwer Health
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Abstract: |
Objectives: To find predictive biomarkers for recurrence and
progression of meningioma.
Background: Despite great advances in meningioma treatment, the
prognosis remained unfavorable due to the high recurrence rate.
Methods: In this study, we evaluated the immunohistochemical
expression of FOXM1, MMP-9, and Ki67 in 50 cases of intracranial
meningioma to detect its potential role in meningioma
progression, recurrence, and patients’ survival.
Results: StrongFOXM1 expression was detected in 20% of the cases
and was significantly associated with meningioma grade (P= 0.002)
and peritumoral brain edema (PTBE; P<0.001). Strong MMP-9
expression was noted in 32% of the cases and was significantly associated
with meningioma grade and PTBE (P<0.001, P<0.001,
respectively). High Ki67 was noted in 50% and significantly associated
with tumor grade and PTBE (P<0.001, P= 0.002, respectively).
The follow-up period revealed that meningiomas with
strong FOXM1, strong MMP-9, and high Ki67 expression were
associated with tumor recurrence, shorter OS, and recurrence-free
survival. Furthermore, up-regulation of FOXM1 and MMP-9 expression
had a significant relation with poor clinical response to the
therapy (P= 0.010, P= 0. 001, respectively). However, high Ki67
cases were more sensitive to clinical therapy (P= 0.005).
Conclusion: Strong FOXM1, strong MMP-9, and high Ki67 in
meningiomas indicate highly aggressive tumors with a shortened
survival rate, dismal outcome, and high risk of recurrence after
the standard protocol of therapy.
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