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Table 2. Patient characteristics, group B<br />

Total<br />

Histologic subtype (WF)<br />

Low grade<br />

Intermediate grade<br />

High grade<br />

Lymphoblastic<br />

Burkitt's/Burkitt-like<br />

Source of stem cells<br />

Bone <strong>marrow</strong><br />

Peripheral <strong>blood</strong><br />

Both<br />

Allogeneic<br />

High dose regimen<br />

Chemotherapy only<br />

Chemotherapy + TBI<br />

Sweetenham et al.<br />

Statistical analysis<br />

Number (%)<br />

1339 (100)<br />

187 (14.0)<br />

393 (29.4)<br />

439 (32.8)<br />

245 (18.3)<br />

75 (5.6)<br />

753 (56.2)<br />

420(31.4)<br />

61 (4.6)<br />

105 (7.8)<br />

743 (55.5)<br />

596 (44.5)<br />

Survival analyses were performed according to the method of Kaplan <strong>and</strong><br />

Meier. 8<br />

Overall survival was calculated from the date of stem cell reinfusion or the<br />

date of relapse/progression to the date of death from any cause. Time to<br />

relapse/progression was calculated from the date of stem cell reinfusion until the<br />

date of documented disease relapse or progression.<br />

RESULTS<br />

Group A<br />

Of the 106 patients undergoing high-dose therapy, 103 achieved a partial or<br />

complete response. Two patients had progressive disease, <strong>and</strong> there was one<br />

treatment-related death at day 10 after <strong>autologous</strong> stem cell reinfusion from<br />

pulmonary hemorrhage. Of the 103 responding patients, 57 have relapsed. The<br />

median time to relapse was 9 months after autoSCT. The actuarial overall survival<br />

from the date of <strong>autologous</strong> stem cell reinfusion is shown in Fig. 1A <strong>and</strong> the failure-<br />

free survival in Fig. IB. The median time to relapse for the entire population was<br />

9 months.<br />

Sites of relapse are summarized in Table 3. Most relapses (63%) occurred in local<br />

or locoregional sites in this group of patients with predominantly diffuse large B cell<br />

lymphoma. The remaining relapses were at distant sites only, or a combination of<br />

171

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