EI sarcoma(134)
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etoposide....... 100 mg/sqm/day IV over 1 h from day 1 to day 5.
ifosfamide...... 1,800 mg/sqm IV plus the loading dose of mesna
(360 mg/sqm) started immediately after
etoposide over 1 h, then oral mesna every 3 h
times 6 each day from day 1 to day 5.
FREQUENCY....... Repeat cycle every 3 weeks for a total of 12
cycles or progression.
reference...
Miser JS. Kinsella TJ. Triche TJ. Tsokos M. Jarosinski P.
Forquer R. Wesley R. Magrath I. Ifosfamide with mesna
uroprotection and etoposide: an effective regimen in the
treatment of recurrent sarcomas and other tumors of children
and young adults. Journal of Clinical Oncology. 5(8):1191-8,
1987 Aug.
abstract...
One hundred twenty-four children and young adults with
recurrent tumors, predominantly sarcomas, were treated with
the combination of ifosfamide, etoposide, and the
uroprotector, mesna (2-mercaptoethane sulphonate), in a phase
II trial. The treatment regimen consisted of 12 cycles of
therapy administered every 3 weeks. After evaluation of the
tumor response to chemotherapy alone, radiation or surgery was
used to eradicate residual sites of metastatic disease where
possible. At the present time, 77 patients are evaluable for
response to the chemotherapy; 43 of the patients have
experienced a significant reduction in the tumor size in
response to the chemotherapy alone (39 partial responses [PR]
and four complete responses [CR]). Sixteen of 17 patients with
Ewing's sarcoma, nine of 13 with rhabdomyosarcoma, four of
eight with peripheral neuroepithelioma, three of eight with
osteosarcoma, and 11 of 31 with other tumors have responded
with a PR or CR. The toxicity of the regimen was acceptable.
Moderate or severe toxicity evaluated on a per cycle basis
included: neutropenia, 97%; thrombocytopenia, 32%;
nephrotoxicity, less than 1%; mucositis, 1%; neurologic
toxicity, 2%; nausea and vomiting, 13%; hemorrhagic cystitis,
less than 1%. Fever was present after 33% of cycles and sepsis
following 7%. One patient died due to sepsis and pancytopenia.
At the present time, only seven of the 43 patients who
responded to the chemotherapy regimen have relapsed, with a
median follow-up of 10 weeks after the response. This drug
combination is highly active in the treatment of recurrent
sarcomas and other tumors in children and young adults.
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