28.02.2013 Views

autologous blood and marrow transplantation - Blog Science ...

autologous blood and marrow transplantation - Blog Science ...

autologous blood and marrow transplantation - Blog Science ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Hoelzer <strong>and</strong> Gdkbuget 65<br />

<strong>blood</strong>, early scheduling of stem cell apheresis after induction/consolidation<br />

treatment is recommended. In a preliminary report from the EBMT, in ALL<br />

patients in first remission, LFS was 41% after autoPBSCT compared with 35%<br />

after autoBMT with a similar RI of 60%. 10<br />

RESULTS OF MISMATCHED AND MATCHED UNRELATED BMT<br />

Mismatched (MM) BMT from related donors or MUD BMT has been<br />

increasingly employed to extend the possibilities of alloBMT by enlarging the<br />

number of bone <strong>marrow</strong> donors available. With BMT from partially MM family<br />

donors, two groups have reported quite favorable results (LFS 38-53%) in<br />

pediatric <strong>and</strong> adult patients with relapsed ALL. Comparing results of fully matched<br />

<strong>and</strong> partially MM alloBMT in ALL >CR1 (including children), the LFS was<br />

similar (38 vs. 38%), whereas TRM was higher (38 vs. 31%) <strong>and</strong> RI lower (31 vs.<br />

25%) after MM BMT. It remains an open question as to whether MM BMT may<br />

be a treatment option in adult patients without a matched sibling or unrelated<br />

donor. 11<br />

In retrospective analyses of MUD transplants in adult ALL, the weighted means<br />

for LFS, TRM, <strong>and</strong> RI were 34, 59, <strong>and</strong> 22%, respectively (Table 1). However,<br />

adult ALL patients with all stages of disease were included, <strong>and</strong> the median age<br />

was low. In one retrospective analysis with a higher median age of 35 years<br />

(18-51) in patients with high-risk ALL, the overall LFS was 20% with a TRM of<br />

65%. Outcome was clearly better in patients transplanted in CR1, with an LFS of<br />

42% compared with 7% in those transplanted in subsequent disease stages. 12<br />

Results of MUD BMT in Ph +<br />

ALL are only available from small patient cohorts.<br />

In the largest report on 18 patients (age 1.5-51 years) in CR1, the LFS was 48%,<br />

which is quite promising. 13<br />

RESULTS OF TRIALS COMPARING BMT AND CHEMOTHERAPY<br />

The overall LFS after alloBMT is superior to that obtained with chemotherapy<br />

alone. However, when these results were adjusted for age, risk factors, <strong>and</strong> time to<br />

BMT (thereby excluding early relapses), the differences between BMT <strong>and</strong><br />

chemotherapy were no longer statistically significant, although there was a trend<br />

toward better results for alloBMT. In a comparative analysis of BMT patients from<br />

the IBMTR <strong>and</strong> chemotherapy patients treated according to the GMALL (German<br />

Multicenter Adult ALL Studies) protocol, results for alloBMT <strong>and</strong> chemotherapy<br />

were comparable (34 vs. 32%). This was predominantly due to a higher TRM in<br />

the transplant group (53 vs. 5%), whereas RI was higher in the chemotherapy group<br />

(30 vs. 66%). 14<br />

Similar results were reported for chemotherapy results of the<br />

JALSG chemotherapy protocol compared with BMT results of the IBMTR. 15<br />

A

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!