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David Rosenthal, MD, director of Harvard University’s
Health Services, introduced the speakers: Eric Winer,
MD, of Dana-Farber Cancer Institute; Eric Small, MD,
of the University of California, San Francisco; Maurie
Markman, MD, of the Cleveland Clinic Foundation;
Norman Farnsworth, PhD, of the University of Illinois;
Jimmie Holland, MD, of Memorial Sloan-Kettering Cancer
Center; and Michael Hawkins, MD, of the Washington
Hospital Center.
I have nothing against any of these fine people, but
none of them is a CAM practitioner. In fact, Dr.
Winer, who described himself as a "traditional"
medical oncologist, opened his presentation by asking,
"Why am I here?" and then set the tone for the
symposium by telling the audience of nearly 200
oncologists, "I have NOT done research in
complementary therapies." Dr. Winer went on to speak
about CAM use among women with breast cancer, although
his derogatory attitude towards CAM was apparent when
he stated, "We do a real disservice to our
psychosocial colleagues to classify psychotherapy as a
complementary therapy." In other words, the CAM label
is a stigma.
Eric Small, MD, of the University of California, San
Francisco, presented information on dietary and herbal
approaches to prostate cancer, and reviewed research
on the herbal formula PC SPES, a project he described
as "not for the faint of heart." After showing that PC
SPES was effective even in some hormone-refractory
prostate cancer patients, Dr. Small had arranged a
clinical trial to compare PC SPES to the drug DES in
advanced prostate cancer. However, when he discovered
a minute amount of DES in the herbal formula (3
percent of the dose used in the DES arm of the study),
he and his colleagues cancelled the study. This was a
decision I still could not understand, even after his
attempt at an explanation.
Dr. Maurie Markman, a co-chair of the symposium, spoke
on safety issues in CAM. He began by asserting, "My
intent is not to indict CAM. The evidence overall is
that [these treatments] are remarkably safe." He then
proceeded to run down almost every alternative
treatment, reciting a litany of alleged horrors: toxic
effects, harmful interactions with other medications,
problems in methods of administration, reduced
effectiveness of standard therapies, impairment in
overall quality of life, and delays in obtaining known
effective therapy. According to Dr. Markman, almost
every alternative cancer treatment, such as laetrile,
shark cartilage, hydrazine sulfate, macrobiotic diets,
and antineoplastons, is toxic.
Horror piled on horror. He even claimed that green tea
could cause "nausea, vomiting, insomnia, fatigue,
diarrhea, abdominal pain and confusion," a remark that
caused some nervous laughter among the tea drinkers in
the audience. Herbal medicines, Dr. Markman said, are
bedeviled by contamination, crop variability,
misidentified plant species, renal and hepatic
toxicity, and outright fraud. Chiropractic could cause
"cerebrovascular accidents," while acupuncture could
cause pneumothorax, hemorrhaging, the transmission of
infection, and injury from "forgotten needles." Dr.
Markman included in this Grand Guignol the damage
caused by herbs that, by his own admission, are not
even used in treating cancer.
The main problem with his presentation was a failure
to contextualize. How frequently do such effects
occur? Very rarely. It is likely that millions of cups
of green tea are drunk for every case of nausea,
vomiting and confusion. As Paracelsus said in 1564,
"Everything is a poison. There is nothing without
poison. Only the dose makes a thing not a poison. For
example, every food and every drink, if taken beyond
its dose, is poison." The "toxicity" of CAM treatments
needs to be compared to truly dangerous treatments,
such as chemotherapy. This simply wasn’t done.
Dr. Markman was followed by Norman Farnsworth, PhD, a
distinguished professor at the University of Illinois
and a voice of reason in the field of herbalism. His
first comment: "I feel like sneaking out the back door
after hearing the previous speaker." Farnsworth then
gave a subdued presentation on the attempt to isolate
chemotherapeutic drugs from herbal sources, which he
characterized as "looking for needles in a haystack."
He did not discuss any of the herbal remedies for
cancer that are of greatest interest to patients.
Michael J. Hawkins, MD (who is chairman of the NIH
panel on which I serve) gave a detailed presentation
on antioxidants and chemotherapy. He excluded all in
vitro and animal experimental data, something that is
rarely done when considering new chemotherapeutic
approaches. Instead, he focused on the clinical data
for vitamins A, C, and E; glutathione; CoQ10; and the
synthetic antioxidants dexrazoxane (also called
ICRF-187) and amifostine. Dr. Hawkins mainly had
positive things to say about the concurrent use of
antioxidants and chemotherapy, and there was no doubt
from his data that most antioxidants do not interfere
with the efficacy of chemotherapy. In fact, most have
been shown to decrease toxicity. There is some concern
about the potential decrease of effectiveness of the
drug Adriamycin with the synthetic antioxidant
dexrazoxane. For that reason, said Dr. Hawkins, the
package insert for the latter drug indicates that it
is reserved for patients who receive at least 300 mg
of Adriamycin. Dr. Hawkins ended his presentation,
certainly the most fair-minded of the symposium, with
a call for large-scale randomized trials.
Given the number of researchers around the world doing
serious work in CAM, it was hard to ignore the
infuriating lack of balance on the panel. Real experts
on the use of CAM in cancer were not asked to speak. I
myself sat between E. Dieter Hager, MD, PhD, director
of the BioMed clinics of Germany, and Ann Fonfa, a
breast cancer activist who directs the innovative
Annie Appleseed Project. Neither of them was asked to
participate. I saw a number of other CAM clinic
directors in the audience, some of whom had traveled
thousands of miles to attend the symposium. How ironic
that the audience wound up listening to non-CAM
practitioners while genuine experts, who administer
these treatments every day, sat unacknowledged in
their midst.
To be sure, this meeting was free of the cant of
outright enemies of alternative medicine, such as the
one who had announced at the 2000 meeting that
vitamin C supplements would result in the explosive
growth of tumors. There was no such nonsense at this
meeting and, in that sense, some progress was made. In
particular, Dr. Hawkins’ carefully worded appraisal of
antioxidants and chemotherapy was the most balanced
presentation on the subject I have heard at ASCO. But
when, I wonder, will ASCO allow its members to hear
from those who have a profound knowledge of this subject,
as physicians, patients and health advocates, instead of
from those who have never personally used the therapies
they talk about? When they do that, it will be a meeting
that makes history.
---Ralph W. Moss
cancerdecisions.com
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