Tumor long-axis diameter and SUVmax predict long-term responders in 90Y-ibritumomab tiuxetan monotherapy.

Tumor long-axis diameter and SUVmax predict long-term responders in 90Y-ibritumomab tiuxetan monotherapy.
Int J Hematol. 2018 Sep 10;:
Authors: Tsukamoto N, Yokohama A, Higuchi T, Mitsui T, Koiso H, Takizawa M, Shimizu H, Ishizaki T, Matsumoto M, Toyama K, Sakura T, Ogura H, Saitoh T, Ishida F, Murakami H, Tsushima Y, Handa H
Abstract
90Y-ibritumomab tiuxetan (90Y-IT) is widely used, but the factors responsible for its optimal treatment effects are unknown. We enrolled 34 patients with relapsed indolent lymphoma treated with 90Y-IT monotherapy at Gunma University Hospital between 2003 and 2014 in the present study. Clinical data including computed tomography and 18-Fluoro-deoxyglucose positron emission tomography were retrospectively analyzed. The overall response rate and complete response rate were 91% and 82%, respectively. The median progression-free survival (PFS) and overall survival were 32 months and not reached, respectively. In univariate analysis, tumor long-axis diameter ≤ 2.5 cm, maximum standardized uptake value (SUVmax) ≤ 6.5, localized disease, normal levels of serum soluble interleukin-2 receptor, and the number of involved nodal sites ≤ 3 immediately prior to 90Y-IT were associated with median PFS greater than 6 years. However, in multivariate analysis, only tumor long-axis diameter ≤ 2.5 cm and SUVmax ≤ 6.5 affected PFS [hazard ratio (HR) 0.130, P = 0.0021 and HR 0.283, P = ...

Source: International Journal of Hematology - September 10, 2018 Category: Hematology Authors: Tsukamoto N, Yokohama A, Higuchi T, Mitsui T, Koiso H, Takizawa M, Shimizu H, Ishizaki T, Matsumoto M, Toyama K, Sakura T, Ogura H, Saitoh T, Ishida F, Murakami H, Tsushima Y, Handa H Tags: Int J Hematol Source Type: research