Angioimmunoblastic T-cell lymphoma: a prognostic model from a retrospective study.

Angioimmunoblastic T-cell lymphoma (AITL) is a distinct subtype of peripheral T-cell lymphoma with unique clinical and pathological features. This study aim to design a prognostic model specifically for AITL, providing risk stratification in affected patients. A total of 115 newly diagnosed AITL patients were retrospectively analyzed. The estimated five-year overall survival (OS) rate for all patients was 45.4%. Multivariate analysis found prognostic factors for survival were bone marrow involvement, number of extranodal sites >1, and performance status >1. We categorized three risk groups: group 1, no adverse factor; group 2, one factor; and group 3, two or three factors. Five-year OS was 86.9% for Group 1, 46.3% for Group 2, and 16.2% for Group 3 (p < .0001). The novel prognostic model balanced the distribution of patients into different risk groups with better predictive discrimination as compared to the International Prognostic Index and Prognostic Index for PTCL, unless otherwise specified.