Peripheral T-cell lymphoma unspecified (PTCL-U): a new prognostic model from a retrospective multicentric clinical study
Andrea Gallamini, Caterina Stelitano, Roberta Calvi, Monica Bellei, Daniele Mattei, Umberto Vitolo, Fortunato Morabito, Maurizio Martelli, Ercole Brusamolino, Emilio Iannitto, Francesco Zaja, Sergio Cortelazzo, Luigi Rigacci, Liliana Devizzi, Giuseppe Todeschini, Gino Santini, Maura Brugiatelli, Massimo Federico, Intergruppo Italiano Linfomi, Andrea Gallamini, Caterina Stelitano, Roberta Calvi, Monica Bellei, Daniele Mattei, Umberto Vitolo, Fortunato Morabito, Maurizio Martelli, Ercole Brusamolino, Emilio Iannitto, Francesco Zaja, Sergio Cortelazzo, Luigi Rigacci, Liliana Devizzi, Giuseppe Todeschini, Gino Santini, Maura Brugiatelli, Massimo Federico, Intergruppo Italiano Linfomi
Abstract
To assess the prognosis of peripheral T-cell lymphoma unspecified, we retrospectively analyzed 385 cases fulfilling the criteria defined by the World Health Organization classification. Factors associated with a worse overall survival (OS) in a univariate analysis were age older than 60 years (P=.0002), equal to or more than 2 extranodal sites (P=.0002), lactic dehydrogenase (LDH) value at normal levels or above (P<.0001), performance status (PS) equal to or more than 2 (P< or =.0001), stage III or higher (P=.0001), and bone marrow involvement (P=.0001). Multivariate analysis showed that age (relative risk, 1.732; 95% CI, 1.300-2.309; P<.0001), PS (relative risk, 1.719; 95% CI, 1.269-2.327, P<.0001), LDH level (relative risk, 1.905; 95% CI, 1.415-2.564; P<.0001), and bone marrow involvement (relative risk, 1.454; 95% CI, 1.045-2.023; P=.026) were factors independently predictive for survival. Using these 4 variables we constructed a new prognostic model that singled out 4 groups at different risk: group 1, no adverse factors, with 5-year and 10-year OS of 62.3% and 54.9%, respectively; group 2, one factor, with a 5-year and 10-year OS of 52.9% and 38.8%, respectively; group 3, 2 factors, with 5-year and 10-year OS of 32.9% and 18.0%, respectively; group 4, 3 or 4 factors, with a 5-year and 10-year OS of 18.3 and 12.6%, respectively (P< or =.0001; log-rank, 66.79).
Source: PubMed