Current oncology (Toronto, Ont.) · 2021
Evaluation of Ki-67 as a Prognostic Marker in Diffuse Large B-Cell Lymphoma-A Single-Center Retrospective Cohort Study.
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Huber Fabian, Zwickl-Traxler Elisabeth, Pecherstorfer Martin, Singer Josef
Аннотация
BACKGROUND: Diffuse large B-cell lymphoma (DLBCL) is the most common non-Hodgkin lymphoma and prognostic information is essential in finding the right treatment. This study evaluated the prognostic significance of Ki-67 in patients with DLBCL.
METHODS: Patients with DLBCL, treated with first-line R-CHOP, were retrospectively analyzed in groups of high (>70%) and low (≤70%) Ki-67. Parameters of interest were the international prognostic index (IPI), treatment response, progression-free survival (PFS) and overall survival (OS). A chi-squared test or Fisher's exact test was conducted to analyze categorical variables. Kaplan-Meier and log-rank tests were applied for survival analyses. Finally, a multivariate linear regression analysis was performed, including gender, Ki-67 ≤ 70% or >70%, IPI and presence of B symptoms.
RESULTS: Overall, 58 patients were included. No significant association was found between Ki-67 status and IPI (p = 0.148) or treatment response (p = 0.373). Survival in patients with high Ki-67 was significantly inferior with respect to OS (p = 0.047) but not PFS (p = 0.138). Multivariate linear regression, however, yielded only IPI as a risk factor for OS.
CONCLUSION: Future studies with larger patient cohorts are needed in order to elucidate the prognostic role of Ki-67 in patients with DLBCL treated with R-CHOP.
METHODS: Patients with DLBCL, treated with first-line R-CHOP, were retrospectively analyzed in groups of high (>70%) and low (≤70%) Ki-67. Parameters of interest were the international prognostic index (IPI), treatment response, progression-free survival (PFS) and overall survival (OS). A chi-squared test or Fisher's exact test was conducted to analyze categorical variables. Kaplan-Meier and log-rank tests were applied for survival analyses. Finally, a multivariate linear regression analysis was performed, including gender, Ki-67 ≤ 70% or >70%, IPI and presence of B symptoms.
RESULTS: Overall, 58 patients were included. No significant association was found between Ki-67 status and IPI (p = 0.148) or treatment response (p = 0.373). Survival in patients with high Ki-67 was significantly inferior with respect to OS (p = 0.047) but not PFS (p = 0.138). Multivariate linear regression, however, yielded only IPI as a risk factor for OS.
CONCLUSION: Future studies with larger patient cohorts are needed in order to elucidate the prognostic role of Ki-67 in patients with DLBCL treated with R-CHOP.