New Treatments for GI Cancers Desperately Needed, but
Thoughtfulness and Economy Are Necessary
Despite the quantity and diversity of research that
will improve the future for people with gastrointestinal (GI)
cancers, the present is not a happy place for them, said
John L. Marshall, MD, Chief, Division of
Hematology and Oncology and Director of the Otto J. Ruesch Center
for the Cure of Gastrointestinal Cancers at Lombardi Comprehensive
Cancer Center. He moderated the symposium, "Molecular Diagnostics
Drive Personalized Medicine: State of the Art 2010," which was held
at Lombardi in early November.
"There is no continuum of treatment for the 275,720 people newly
diagnosed with GI cancers last year (and the more than 135,300
deaths), and development of blockbuster drugs has just about
stopped," he said. Not only are there upwards of 50 genetic
mutations, we have barely begun to figure out their patterns.
"Moreover, NCCN guidelines are no longer just guidelines; they have
become 'the law of the land.' We give 97% of all patients the same
treatment regimen (about 3% are in clinical trials), and 80% of
them die regardless. The standard of care is less than adequate-far
less."
With that gloomy preamble, Dr. Marshall introduced speakers who
discussed the impact of personalized medicine on the health-care
system. They approached the issues from different perspectives, but
their messages were similar: Although new treatments for GI cancers
are desperately needed, the endeavor must be approached
thoughtfully, with attention paid to ethical ramifications and the
ultimate value to patients of this very costly research.
Medicare Wants Treatments that Work
Louis Jacques, MD, Director of the Centers for
Medicare & Medicaid Services (CMS) Coverage and Analysis Group,
explained that cancer policy includes treatment with both curative
and palliative intent, supportive care for complications and
adverse events, and use of biomarkers for drug and/or biologic
discovery and development.
When reviewing clinical evidence, CMS asks if the patient is
better, if there is an increased chance of survival, and whether he
or she can continue to function reasonably normally.
Dr. Jacques described some of CMS's challenges in molecular
testing and biomarker development: standards and techniques that
are not FDA approved ("home brews"), tests that may be used during
drug development but that are not commercially available for
clinical practice, and the problems posed by molecular testing when
there is no simple way to recognize an erroneous or misleading test
result.
How do these factors affect outcome? Is the patient better or
worse off?
To evaluate these issues, or at least determine which questions
are appropriate, CMS and other agencies use a process developed by
the Centers for Disease Control and Prevention (CDC) for evaluating
genetic tests. It's called ACCE and consists of:
- • Analytic validity: how accurately and
reliably a test measures a genotype.
- • Clinical validity: how consistently and
accurately a test detects or predicts intermediate or final
outcomes.
- • Clinical utility: how likely the test is to
significantly improve patient outcomes.
- • Ethical, legal, and social issues that arise
in the context of using a test.
Bioethical Implications
In September 2007, when personalized medicine became the
acknowledged wave of the future in cancer treatment, then Secretary
of the U.S. Department of Health and Human Services (HHS) Michael
Levitt coined a motto for it: The right treatment for the right
person at the right time. (Andrew C. von Eschenbach,
MD, former NCI Director and FDA Commissioner, would add:
for the right reason and the right outcome.)
What does this mean? asked Kevin T. FitzGerald, SJ,
PhD, Research Associate Professor and David Lauler Chair
for Catholic Health Ethics, Georgetown University. "Who, after all,
wants the wrong treatment-at any time?"
Public airing of Secretary Levitt's somewhat indistinct goal
highlighted its elementary status and inherent challenges:
- • Health-care disparities are widespread in
the United States, especially with regard to genetic endowment.
This results in significant variance in response to drugs and
biologicals.
- • Issues of race, sociology, and
biogeographics also affect the way people respond to treatment-and
whether they receive treatment at all.
- • All problems regarding privacy, informed
consent, and liability were not resolved by GINA (Genetic
Information Nondiscrimination Act). "People see these issues very
differently, and they have widely varying views about benefit,
risk, and harm," said Dr. FitzGerald.
Health-care Reform and Cancer Treatment
The Lombardi seminar took place 2 days after House
Democrats received a shellacking at the polls, and Dr. von
Eschenbach, now Senior Director for Strategic Initiatives at the
Center for Health Transformation, Washington, DC, wondered aloud
about implications of the election for health-care reform. "The
Democrats who lost are conservatives, but the Republicans who took
their places are even more so."
He thinks that at least for the next 2 years, the country will
focus on the economy and jobs, as well as an effort to repeal the
health-care reform law. He said that 54% of Americans are in favor
of getting rid of the law, and there probably won't be much
discussion about which parts of it should be saved and which can be
ditched. "The emphasis is on repeal, repeal, repeal-rather than on
the challenges of implementation and on the economics of change.
President Obama is going to be hard put to save his signature
legislation."
Dr. von Eschenbach believes that all decisions about health-care
reform will have serious economic consequences for cancer research
and cancer care, especially the pressure to lower costs. Finding
new funds is just about impossible now. "We're broke," he said
flatly.
Therefore, ensuring that all Americans have access to the health
care they need requires what he calls the three As:
- • Availability. "If care doesn't exist, it
obviously isn't available; therefore, innovation is
imperative."
- • Affordability. "We need to be more
disciplined stewards of our resources."
- • Appropriateness. "No one likes change, but
we must create value for the research dollars we spend, and we have
to generate jobs in the process." Moreover, the mass migration of
innovation out of the United States and into China, India, and the
rest of the world is having catastrophic effects on our economy.
"We must foster innovation and development, and we must decrease
cost and improve quality. This will engender profound and complex
change over the next few years, but it's not just necessary, it's a
matter of life and death." ■