[PDF][PDF] Enhanced humoral immune response correlates with improved disease-free and overall survival in American Joint Committee on Cancer stage II melanoma …

LA DiFronzo, RK Gupta, R Essner, LJ Foshag… - Journal of clinical …, 2002 - Citeseer
LA DiFronzo, RK Gupta, R Essner, LJ Foshag, SJ O Day, LA Wanek, SL Stern, DL Morton
Journal of clinical oncology, 2002Citeseer
Purpose: Although the improved overall survival (OS) of patients who receive Canvaxin
(CancerVax Corp, Carlsbad, CA) polyvalent vaccine (PV) immunotherapy for metastatic
melanoma has been correlated with cellular and humoral immune responses, the
mechanisms of vaccine immunotherapy for early-stage melanoma are unclear. Specific
immune responses to tumor-associated antigens might correlate with disease-free survival
(DFS) and OS in patients receiving adjuvant PV therapy for primary melanoma. Patients and …
Purpose: Although the improved overall survival (OS) of patients who receive Canvaxin (CancerVax Corp, Carlsbad, CA) polyvalent vaccine (PV) immunotherapy for metastatic melanoma has been correlated with cellular and humoral immune responses, the mechanisms of vaccine immunotherapy for early-stage melanoma are unclear. Specific immune responses to tumor-associated antigens might correlate with disease-free survival (DFS) and OS in patients receiving adjuvant PV therapy for primary melanoma.
Patients and Methods: Eighty-three patients re-ceived PV plus bacille Calmette-Guérin after wide excision of American Joint Committee on Cancer stage II melanoma. Humoral and cellular responses during the first 12 weeks of adjuvant immunotherapy were assessed by serum antibody titers to a tumor-associated 90-kd glycoprotein antigen (TA90) expressed by PV, and by delayed-type hypersensitivity (DTH) skin testing with PV (PV-DTH).
Results: At a median follow-up period of 46.6 months (range, 10.7 to 93.6 months), an increased PV-DTH response seemed to be associated with improved 5-year DFS (54% v 20%) and 5-year OS (75% v 60%), but the correlations were not statistically significant. Anti-TA90 immunoglobulin (Ig) M levels> 1: 800 were significantly correlated with improved 5-year DFS and improved 5-year OS, and multivariate analysis identified anti-TA90 IgM as an independent prognostic factor for OS and DFS.
Conclusion: These findings suggest that an in-creased IgM response in patients receiving PV therapy for stage II melanoma is associated with decreased recurrence and improved survival.
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