for those w multiple brain mets--report of Phase I evaluation of new drug combination

[pattyz]

Lani,

I'm glad to see another (tho' small) study being done, as the one I'm pasting here was encouraging, too. I found the SABCS report just a few days AFTER I began my tx protocal with these two drugs. And, as I've mentioned here, it was a good response combo for me, for the 8 brain mets I'm currently 'wearing'.....

SABCS ABSTRACT:
[San Antonio Breast Cancer Symposium]
[1079] Phase I study of capecitabine (C) in combination with temozolomide (T) in the treatment of patients with brain metastases from breast carcinoma.

Rivera E, Valero V, Francis D, Brewster A, Royce M, Esteva F, Murray JL, Pusztai L, Hortobagyi GN.. The University of Texas M.D. Anderson Cancer Center, Houston, TX



Background: T is an oral alkylating agent that is
currently being used for the treatment of primary
brain tumors due to its ability to cross the
blood-brain barrier. C has been approved for use in
the treatment of metastatic breast cancer patients who
have failed anthracyclines and taxanes. It is well
known that C crosses the blood-brain barrier and has
activity in the brain. Options are limited for
patients with brain metastases.



Materials and Methods: We evaluated the activity of
both drugs in combination for the treatment of brain
metastases not amenable to surgery. Patients were
allowed in the study if they had new onset brain
metastases from breast cancer, had declined radiation
therapy, and were neurologically stable. They were
also eligible if they had evidence of recurrence or
progression of brain metastases after whole brain or
stereotactic radiation therapy. C was started at 1800
mg/m2 in 2 divided doses. T was given at a starting
dose of 75 mg/m2 in one daily dose. Each drug was
given concomitantly every day for 5 days (day 1-5)
followed by 2 days of rest and restarted again for an
additional 5 days (days 8-12). Each cycle was repeated
every 21 days. We have enrolled a total of 16 pts — 6
pts at dose level 0 (C/T — 1800/75), 6 pts at dose
level 1 (C/T — 1800/100), and 4 pts at dose level 2
(C/T — 2000/100).



Results: Five pts had recurrent brain metastases and
had been previously treated with radiation therapy.
The median age is 51 yrs (range, 32-77). All pts had a
Zubrod performance status < 1. Ten pts were ER and/or
PR positive. No grade 4 toxicities have been reported.
Grade 3 toxicity includes headaches (2 pts), vomiting
(1 pt), constipation (2 pts), fatigue (2 pts),
nonneutropenic fever (1 pt). We have observed 1 CR, 1
PR, 6 MR, and 3 SD. Four pts did not respond to
treatment. One pt was not evaluable for response.
Median duration of response in brain was 10.5 weeks
(range, 6-48+ wks). Two pts with SD and 2 pts with MR
had previously received whole brain radiation therapy.
Three pts were taken off the study because of
progression of disease outside the brain including the
pt who had a CR in brain but progressed systemically.
Four pts are actively being treated in the study.

Conclusions: The combination of C and T seems to be
active and well tolerated for the treatment of brain
metastases from breast carcinoma. Further studies
should include the evaluation of this combination with
radiation and as adjuvant therapy in those pts who are
at high risk of developing brain metastases.


Wednesday, December 8, 2004 4:30 PM

Poster Session: Treatment: Chemotherapy -- New Drugs and Formulations (4:30 PM-7:00 PM)