Thiotepa, Etoposide, Cyclophosphamide, Cytarabine, and Melphalan (TECAM) Conditioning Regimen for Autologous Stem Cell Transplantation in Lymphoma.

Background: High-dose chemotherapy and autologous stem cell transplantation (ASCT) is the current standard of care for relapsed non-Hodgkin lymphoma (NHL) and Hodgkin lymphoma (HL). Conditioning regimens with high-dose carmustine have been associated with idiopathic pneumonitis syndrome. We, therefore, created a modified alternative TECAM conditioning regimen, consisting of etoposide, thiotepa, cytarabine, cyclophosphamide, and melphalan.

Patients And Methods: We retrospectively analyzed our cohort of 212 NHL and HL patients, who had undergone ASCT with the TECAM conditioning regimen from 2000 to 2013. Although toxicity and engraftment were analyzed for all 212 patients, the survival analysis was performed for the 2 largest groups of patients, those with diffuse large B-cell lymphoma (DLBCL) and those with HL (n = 127) to minimize heterogeneity.

Results: The 3-year overall survival among the DLBCL and HL patients was 0.618 (95% confidence interval [CI], 0.490-0.722) and 0.828 (95% CI, 0.701-0.904), respectively. Stage IV disease at transplantation was a statistically significant poor prognostic factor. Higher Eastern Cooperative Oncology Group performance status and progressive disease at transplantation were found to be borderline significant. No idiopathic pneumonitis syndrome cases were reported in our cohort. Six patients died of treatment-related toxicity during the first 100 days. The 3-year progression-free survival was 0.5 (95% CI, 0.37-0.61) for HL patients and 0.49 (95% CI, 0.36-0.60) for DLBCL patients.

Conclusion: Our results are encouraging and justify evaluation of TECAM versus BEAM (carmustine, etoposide, cytarabine, melphalan) in a prospective multicenter study in a large homogenous patient population.