Documented meningeal lymphomatosis (spread to the brain or spinal cord membranes).
đź’ˇ The inclusion of the P4 (Interim PET) parameter is significant because it allows doctors to adjust treatment mid-course based on how the tumor is actually responding to chemotherapy. Clinical Significance
Research indicates that variables like bulky disease and Ki67 are strong independent predictors of how long a patient will remain in remission.
High proliferation index (Ki67 ≥ 70%) on immunohistochemistry. B (Bulky): Physical presence of a tumor mass ≥ 7.5 cm.
While the International Prognostic Index (IPI) is the standard, KBMP4 provides a more granular look at aggressive "Double-Hit" or "Double-Expression" lymphomas.
High KBMP4 scores often signal that standard R-CHOP therapy may not be enough, potentially leading to more intensive consolidative strategies or clinical trials.
Changes in interim PET/CT scan results after 4 treatment cycles (specifically a decrease in SUVmax < 71%). Risk Stratification & Survival Rates
It was designed to offer better accuracy than traditional metrics by combining cellular biomarkers with imaging data and physical disease characteristics. The Components of KBMP4