U.S.
Department of Health and Human Services
Advisory Committee on Organ Transplantation (ACOT)
Summary
Notes from Meeting
Washington, D.C.
May 6–7, 2004
Welcome and Update
Nancy
Ascher and Jack Kress
Nancy
Ascher started by saying that she looks forward to the important
contributions this committee makes to the arena of organ transplantation.
The outcome of this meeting will be guidance and direction
to the subcommittees to be the basis of recommendations they
will generate for the November meeting. She said that she
does not anticipate any recommendations being developed at
this meeting.
She introduced
Jim Burdick, the director of the Division of Transplantation,
who was standing in for Michelle Snyder, the Associate Administrator
of HRSA. Burdick commented on an important upcoming transition:
Jack Kress, the executive director of ACOT, is moving on this
summer to a study assignment under the aegis of HRSA at the
Albany Medical College in New York State. He pointed out some
of the highlights of Kress's tenure with the U.S. Department
of Health and Human Services (HHS) as he worked on legal and
ethical matters. Most significantly to ACOT, Kress was involved
in developing the early structure of ACOT and its processes.
He saw to the development of all of its recommendations, which
he then shepherded through the department. He has facilitated
progress after recommendations have been approved. In every
way, he has been a major factor and supporter in our efforts.
Burdick presented Kress with a Special Acts Award and certificate
to recognize his dedicated service to ACOT.
Burdick
went on to introduce the new executive director of ACOT—Thom
Balbier—who has worked at HHS since 1977, primarily
in the area of scientific and governmental aspects of vaccine
programs. Balbier briefly addressed the group, saying that
he was looking forward to working in this important field
and meeting the committee members.
Kress
thanked the participants and the audience. He noted that he
has a long history in the Albany area and looks forward to
returning to research. He plans to continue to work on organ
donation reform and improvements. He plans to start by learning
what happens at the ground level. He expressed his thanks
to the ACOT members. He noted that there will be a long transition
period during which he and Balbier will overlap to ensure
that ACOT's efforts will continue seamlessly.
He then
introduced the next item on the agenda—tissue and body
part concerns—noting that this topic has grown out of
two developments: (1) the efforts of former ACOT member Margaret
Coolican, who pushed us into the realm of tissue and body
parts; and (2) recent events and adverse publicity in that
field, which may affect organ donation. We need to ask about
what we need to do in this area.
Panel
on Tissue and Body Parts Concerns
Moderator:
Michael Seely
Panelists: Todd R. Olson, Hon. Margaret W. Henbest, Ronn Wade
Michael
Seely thanked the committee for including this topic, which
was brought to light by the media. It has had top billing
in many large media outlets. The integrity of the national
organ transplant system is at stake. We have not spent much
time on other forms of donation, but we need to consider these
issues. Currently, the federal regulatory framework does not
represent a consistent approach. Certain aspects of tissue
recovery and handling are subject to inspection by the Centers
for Medicare & Medicaid Services (CMS), and other aspects
are subject only to a voluntary accreditation process. Whole
body donation and use is largely unregulated, although there
may be rules and guidelines for oversight within institutions.
Margaret
Coolican was motivated to bring this issue to the attention
of Kress who in turn directed the issue to the attention of
this subcommittee. The fact is that there are many more tissue
donors than organ donors every year. Tens of thousands of
lives are benefited by tissue donation. Whole body donation
is also significant. Any single event in any of these arenas
affects the others. The public does not distinguish among
these different areas.
Todd
R. Olson
Albert
Einstein College of Medicine
Seely
introduced Todd R. Olson, who runs the Anatomical Gift Program
at the Albert Einstein College of Medicine in the Bronx, New
York, and who is also a council member of the American Association
of Clinical Anatomists. He has received wide press lately
as he has been speaking out against the practices that led
to recent scandals in willed body and tissue donation programs.
Olson
opened by saying that anatomists and the transplant community
have mutual concerns: "For the past 30 years, our two
fields have walked parallel paths, but our interests and differences
are intertwined: Our differences are far more significant
in our eyes than they are in the public's." He stated
that many of his anatomical colleagues have called him to
say they have been waiting for 20 years to gain a place in
this forum.
He noted
that the public lacks even a basic understanding of the distinctions
among the different types of donation. We are all educators
in respect to organ, tissue, and whole body donation. Public
education and education of the media are key roles. He made
a special request of the media representatives present at
the meeting to tell the "good parts of the story."
In the
absence of education, Olson continued, donation scandals will
likely diminish public confidence in all types of donation.
If it affects one school, it affects all. To ferret out the
wrongdoers, it is necessary to follow the money. He specifically
mentioned the scandals at the University of California-Los
Angeles, Tulane University, University of California-Irvine
and others that have been featured in recent headlines.
He noted
that really there is nothing shocking or surprising going
on. If anything, these events must be called predictable.
These situations arise when people of limited means decide
to ignore professional responsibilities and institutional
trust for personal gain. Where does the money come from to
motivate this behavior? Ultimately, Olson said, it comes down
to "Physician, heal thyself."
Physicians
themselves and professional societies need to step up and
say that they care. They are obligated to require detailed
oversight and accounting for materials used in educational
programs. Ethical practices in patient care do not cease with
the final breath; the need to respect the human body is at
the center of the doctor-patient relationship. "As anatomists,"
Olson said, "we are doing a great deal. We work with
willed-body programs so that those who convey material from
place to place are acting in concert with donor's wishes."
He mentioned some specific legislative and institutional efforts
in Texas, California, New York State, and at the University
of Pittsburgh School of Medicine aimed at reviewing or regulating
willed-body and tissue donation programs. He referred to several
articles on the topic.1, 2,
3, 4, 5
Olson
also spoke about the return of the resurrectionists (grave
robbers). He mentioned a recent article in Harper's Magazine
about modern-day resurrectionists6
and related the story of William Burke and William Hare who
went on a killing spree out of greed in Scotland in the 1800s.
Their activities were perpetrated against the citizens of
Edinburgh where Hare owned a boarding house. One of his pensioners
died, still owing 4 pounds in rent. Hare enlisted the help
of another resident—Burke—and took the remains
to a disreputable anatomist who paid them 7 pounds. Thus was
initiated the monetary motivation to kill pensioners for money.
Needless to say, there was great public concern and riots.
In New York, the militia had to be called out under similar
circumstances.
Those
who had teaching materials (i.e., body parts) were able to
run anatomy schools. The anatomists did not ask where the
materials came from, and this is the story happening again
today. Modern-day resurrectionists deal with donors who are
making donations that can save lives. What is needed is a
clear paper trail for body parts being used in education.
Olson
offered several recommendations:
- Expand
public education.
- Encourage
information sharing regarding tissues, organs, and body
parts.
- Approve
changes to the Uniform Anatomical Gift Act to deal with
the rapidly expanding body parts industry.
- Establish
a national central clearinghouse for parts used in anatomical
research that can serve as a go-between for sites of access
and sites of need.
- Insist
that organizations involved in oversight and regulation
of tissue banks approve only appropriate and legal uses
of bodies, body parts, and tissues.
- Ethical
considerations must extend to the remains of those who have
given to promote medicine.
Olson
urged those in attendance not to let this issue go away without
taking constructive action, saying, "This controversy
will come to your doorstep as well."
Hon.
Margaret Henbest
Idaho
House of Representatives
Seely
then introduced Representative Margaret Henbest from Idaho.
She has served in the Idaho state legislature for 8 years.
She is working to help the public understand what donation
is about. She is also a pediatric nurse practitioner and has
a particular interest in disclosure issues.
Henbest
said that she became aware of controversy surrounding body
donation about 6 years ago when she was contacted by a constituent
who was monitoring the activity of a county coroner. Coroners
are elected officials in Idaho and are not held to any standards.
Two-thirds of Idaho's coroners are funeral directors. The
constituent said that the coroner was involved in a business
enterprise that was harvesting heart valves. There were legal
and ethical concerns, and yet there were no laws that prohibited
this practice.
She spoke
about the experience of another constituent who was distraught
about the organ donation surrounding the death of his daughter.
The daughter had indicated prior to her death that she was
willing to donate her organs, and her family wished to honor
that wish. They discovered, however, that her long bones had
also been procured. The family had no idea that the donation
would include other tissues. They were left with unresolved
grief.
Subsequently,
Henbest did some research on tissue donation, storage, and
the profitability of organ and tissue transplantation. She
learned about the fact that the regulations governing organ
donation differ significantly from those addressing tissue
donation. She noted some specific concerns:
- Inadequate
regulation of the tissue industry that could lead to disease
transmission.
- Inadequate
registration of those who handle body parts: In 1998, the
requirement for registration were removed by Idaho's Department
of Health and Welfare. There was no punishment for not registering.
- Extreme
profitability of this industry: We must follow the money.
- Inadequate
requirements for informed consent: Consent is not exclusively
for organs, but for tissues, as well.
- Regulatory
loopholes that allow profiteering for use of body parts
research and education: There is concern because current
regulations are silent on the use of body parts for research
and education as opposed to transplantation, which is regulated.
Idaho
rewrote the state's Anatomical Gift Act. The goal was to provide
higher standards for informed consent. Henbest observed that
now, "when you apply for a driver's license in Idaho,
you receive a detailed brochure about how your body parts
might be used, and you are advised about available resources
and your rights. You can designate the exact purposes for
the use of your body, tissues, and parts. Parallel information
is given to families. Because we have elevated the degree
of consent, we are moving toward direct consent. Donation
rates have increased in our state." She noted that it
is important for people to know the uses of their donated
bodies. Therefore, Idaho has taken the law another step: to
add a preferred designation for for-profit or not-for-profit
use of the individual's body.
According
to Henbest, forthcoming legislative sessions will address
mandatory accreditation of tissue banks, as well as for-profit
tissue and body part programs. She said that we need federal
regulation so that the country does not end up with a patchwork
approach. We did not anticipate all the uses for tissues and
body parts when 40 years ago we drafted the Uniform Anatomical
Gift Act (UAGA). She also mentioned a recent poll in England
that indicated that the public is reluctant to have their
DNA used in research. Another issue at the fore has been military
use of bodies for testing artillery.
Henbest
concluded by saying that a high tide floats all ships. We
must remember this adage because the public does not differentiate.
We cannot be silent any longer.
Barry
Kahan asked Henbest about what types of donation have increased
in Idaho since the institution of better conformed consent.
Henbest replied that they have a database but have not drilled
down yet to see which types of donations are increasing. She
noted, however, that 15% more people have indicated via the
Department of Motor Vehicles (DMV) their willingness to be
a donor. Seely said that this more complex approach to consent
might have decreased donations, but such is not the case apparently.
Kahan observed that, in general, the more information you
give people, the less likely they are to read it or to sign
it. Henbest replied that she does not know whether people
are reading the brochure cover to cover, but it has not been
a barrier to donation.
Olson
was asked about what has happened with anatomical donation
in New York State since recent events. He noted that donors
fall into two different profiles. Some donors do so out of
humanitarian and altruistic motivation in gratitude for medical
care and to advance science. The second type of donors—a
significant number—donate for financial reasons. They
are seeking a way around funeral costs. Some people are donating
because they want to give money to their children. He observed
that they are receiving more interest from people who now
recognize the value of their bodies.
Henbest
volunteered to provide copies of Idaho's organ donation brochure
and informed consent form to ACOT. She also indicated a willingness
to work on getting more data on the effects of the new legislation
on donation rates.
Michael
Williams mentioned an article he reviewed for Critical Care
Medicine that dealt with the notion of desecration. Social,
personal, and religious overtones are there. We
must not forget the role of religious and faith communities.
Henbest agreed that those issues constitute the underpinning
for this discussion. The public is outraged when these issues
come to light. We must also address the enticement of profitability.
To build enough groundswell and interest, we must act in partnership
with religious organizations.
Olson
concurred with Henbest's comments, saying that transparency
is the key. We must emphasize education and disclosure.
Ronald
S. Wade
Maryland
State Anatomy Board
Ronald
Wade has directed Maryland's body donation program for 30
years. Wade noted that as organ transplants have became more
successful, people had that alternative to consider. When
he came on board, one of the first things he did was try to
reorganize so that body donation became more acceptable. Historically,
most bodies for study were unclaimed bodies or from tuberculosis
sanitariums, but now people want to leave a legacy by improving
medical care for the next generation.
Surgical
study labs were set up for training physicians, shock-trauma
personnel, emergency medical technicians, military medics,
and others. The number of bodies used in gross anatomy is
less than 300. The cause of death is not important; the donation
will not be refused. "We stand by our promise to accept
the donation."
The study
of anatomy has changed. Courses are shorter, and some courses
are doing away with dissection altogether, but there is a
continuing and increasing need to enhance surgical training.
To meet the need for training material, a whole gamut of body
brokers and for-profit tissue banks has sprung up.
Wade said
that he dealt yesterday with a university in the Midwest about
a push to obtain body parts from a broker. The bodies are
being obtained in the south. The State of Maryland will assist
with transferring remains out of state, but the transfer must
be through an institution.
It is
illegal to function as a broker or deal with a broker in Maryland.
Without requirements for serological testing, proper facilities,
and a social and medical history, dealing with bodies and
body parts is a high-risk situation. In Maryland, no surgical
conferences may be held in hotels or conference centers to
prevent disease transmission. Some brokers are going to funeral
directors who receive finder's fees. They may even pay for
use of a funeral home facility. These practices raise ethical
concerns. Wade deals only institution to institution to eliminate
brokers. He has a duty to the public, citizens, and the medical
community to ensure that everything is done to high standards
in compliance with public policy and with respect for donors
and their families.
Carlton
Young commented that this situation appears to be an exploding
problem. He expressed concern about desecration-denigrating
human bodies to the level of commodities. He noted
that the transplant community is always battling over the
issue of valuable consideration. How can we modify the UAGA
to raise the standard?
Wade said
that the legal value of a body is zero dollars. For example,
it is impossible to insure bodily remains for transportation.
Many people in Maryland carry organ donor cards or kidney
cards. He used to conduct surveys of donors. People are aware.
People are commonsensical. It is a changing culture. There
is a real need in medical schools for anatomical study materials.
Olson
observed that this is an international issue. Brokers can
work together with funeral directors. European doctors have
indicated that they acquire body parts from the United States,
Romania, and elsewhere. Trade appears to go the other way
as well. We need tracking systems across borders.
Wade said
that uniform donor laws are being framed to have parameters
for minimal standards. Regulations differ from state to state
presently.
Young
asked how we can support these efforts to modify the UAGA.
Kress said that ACOT has done so in the past and will do so
again. We need only to decide which subcommittee is the most
appropriate for this work.
Susan
Gunderson said that she knows little about whole body donation
even though she runs an organ procurement organization (OPO).
She continued, "We have come to understand tissue donation.
We have our heads in the sand if we think we are immune from
the fallout from unethical and illegal practices in willed-body
programs."
Kathy
Turrisi suggested that perhaps ACOT needs to branch out and
encompass these other areas that impact organ donation. Perhaps
we need to rethink our very name, which presently refers only
to "organ transplantation."
A
New Way of Looking at the Problem: The Burden of Disease and
Its Progression
Lawrence
G. Hunsicker
Henry Krakauer
Kress
presented Lawrence Hunsicker, a former ACOT member who is
also a past president of the United Network for Organ Sharing
(UNOS) and the American Society of Transplantation. He is
here today primarily because he is chair of the UNOS Data
Working Group. Hunsicker has been investigating the burden
of disease from a statistical point of view. Also involved
in this research are Henry Krakauer, an epidemiologist, and
Monica Lin, a statistician. They will describe an intriguing
new way of looking at the quality of life.
Hunsicker
noted that the Data Working Group (DWG) was created by the
Division of Transplantation to coordinate between the Scientific
Registry of Transplant Recipients (SRTR) and the Organ Procurement
and Transplantation Network (OPTN) to make sure that the right
data are collected in appropriate and efficient ways. The
DWG is advisory to UNOS and the scientific committee of SRTR.
Analysis
of transplant outcomes has so far focused on time to death
and time to graft loss. Although these are clearly important
outcomes, with improving patient and graft survival they are
no longer the only relevant outcomes to consider. Hunsicker
reviewed some reasons why it is not sufficient to consider
only graft and overall survival. For these reasons, ACOT has
charged the DWG with looking into quality of life issues.
The term
quality of life (QOL) is not a standard or well-understood
concept. There is a rationale for a new approach. For example,
there is a strong likelihood that alternative outcomes such
as morbidity and functional status will be highly correlated
with mortality risk. Cumulative morbidity and functional status
can be measured on many occasions and may offer greater statistical
power in analyses. Time-series analyses on nonterminal outcomes
may permit early intervention on high-risk patients.
Many years
of work led by Henry Krakauer has resulted in the identification
of five domains or dimensions of transplant outcomes that
constitute the burden of illness. They are:
- Mortality
- Cumulative
morbidity (adverse medical events, including graft loss
and other events, primarily evidenced at least initially
by hospitalizations)
- Disability/functional
status (ability to perform functions required/desired in
daily life)
- Psychological
distress (e.g., depression, anxiety)
- Resource
use (effort/resources needed to care for the patient, again
focusing initially on hospitalization).
Hunsicker
explained for each of the five proposed domains the existing
data sources, and he proposed some additional sources.
Mortality
Data on
mortality are now captured by the OPTN/UNOS system and are
supplemented by death data from the Social Security Master
File or National Death Index. These data are quite complete.
Cumulative
Morbidity
At least
initially, this domain would be evidenced by hospitalization
data. Limited hospitalization data are now collected on transplant
recipients. The new forms will ask post-transplant patients
about all hospitalizations since last reports. UNOS/OPTN collects
no data about waiting-list patient hospitalizations. CMS collects
complete data on kidney candidates and recipients who have
Medicare primary coverage. As a starter, the DWG has obtained
consent from Pennsylvania and Virginia to get comprehensive
hospitalization data on transplant candidates and recipients
from those states. Transplant centers do not have these data.
Functional
Status
UNOS/OPTN
collects functional status information on transplant recipients
at transplant and on follow-up forms, but for transplant candidates,
the data on functional status is collected only at the time
of registration. Although these data correlate with outcomes,
the grading is not sufficiently granular to capture less-than-gross
loss of function. Nevertheless, these data may be useful because
they are highly predictive of mortality.
The DWG
proposes to capture additional information on functional status
in a pilot study using the SF36 physical status scale and
replacing the current UNOS functional scale (The New York
Heart Scale — four points) on the transplant form with
the Karnofsky Index. The Karnofsky Index (Figure
1) represents 11 levels of function ranging from normal
to minor impairments that do not adversely affect function
to a moribund state to death. It is the standard, best validated
objective scale for functional status, and it can be completed
at the time of patient clinic visits in less than one minute.
This proposal
was discussed at the Data Advisory Committee meeting in late
April. This will not be an effortless change. Someone will
have to collect the data and complete the scale during clinic
visits. Vanderbilt University has been acquiring Karnofsky
data for some time.
Figure
1. The Karnofsky Index
| 100 |
Normal;
no complaints; no evidence of disease |
| 90 |
Able
to carry on normal activity; minor signs or symptoms of
disease |
| 80 |
Normal
activity with effort; some signs or symptoms of disease |
| 70 |
Cares
for self; unable to carry on normal activity or to do
active work |
| 60 |
Requires
occasional assistance, but is able to care for most of
own needs. |
| 50 |
Requires
considerable assistance and frequent medical care |
| 40 |
Disabled;
requires special care and assistance |
| 30 |
Severely
disabled; hospitalization indicated although death not
imminent |
| 20 |
Severely
disabled; hospitalization indicated although death not
imminent |
| 10 |
Moribund;
fatal processes progressing rapidly |
| 0 |
Dead |
| Karnofsky,
D. A., Abelmann, W. H., Craver, L. F., and Burchenal (1948).
The use of nitrogen mustards in the palliative treatment
of cancer. Cancer 1:634-656. |
Psychological
Distress
Presently,
no data are collected by UNOS/OPTN on this domain. The DWG
proposes to collect this information from the SF-36 mental
health subscale. This instrument is widely used to assess
mental and psychological status.
Resource
Use
UNOS/OPTN
currently collects no data on this domain, although NOTA charged
OPTN and SRTR with collecting financial data on the costs
of transplants. At least initially, the DWG proposes to focus
on hospitalization resource use by estimating from hospitalization
data the effort needed to care for the patient. The basis
will be uniform coding based on DRG weights and length of
stay.
For which
patients do we need to track these five domains? The benefit
of the transplant is the total difference between projected
outcomes based on whether the transplant is performed or not
performed. In addition, we should think about including those
who are not transplanted but live with chronic disease. That
issue, however, is outside the scope of today's discussion.
Hunsicker
made it clear that there is no intent for the proposed analyses
to force any particular approach to the formulation of deceased
donor organ allocation or other UNOS/OPTN policy. The proposed
approach to analysis will simply inform UNOS/OPTN committees
more broadly about the outcomes of transplantation. The Board
and the Committees are free to use the information as they
deem appropriate.
To what
extent will these domains correlate with morbidity and mortality?
It is conceivable that many patients who receive lung transplants,
for example, do not have longer lives but their QOL post-transplant
may be very much greater. In any event, a person who is considering
a lung transplant may wish to look at the impact of transplant
on survival and functional status. The best approach for analysis,
then, may be combination of multiple outcomes in a model with
a multivariate outcome. That is, outcomes in all five domains
can be considered as a single vector (per individual). In
this approach, the mutual correlations among the outcomes
are observed directly (as the covariance matrix) in the analysis.
This approach is objective and leaves weighting to policy
makers and patients.
Using
combined analysis of multiple outcomes may be leading the
way for the rest of the health community, but it is not a
slam-dunk. Not all groups may wish to pursue this line of
thinking. Others may wish to work out different approaches.
Let many investigators look at these data using different
analytic approaches.
In addition,
different analysts may have different goals. Some may strive
to optimize use of limited resources (organs or funds); others
may seek to optimize outcomes for a particular patient.
Analyzing
Multiple Outcomes for Transplant Candidates and Recipients
Robert
Wolfe
The Data
Advisory Committee is looking at several different mathematical
approaches, according to Robert Wolfe. We are looking at the
benefit of transplantation although it involves many different
outcomes. Wolfe listed two rate measures (mortality, hospitalization)
and four scaled measures (days in hospital, resource use,
functional status, and psychological distress). Scaled measures
are determined at different points in time and then the averages
are weighted.
Wolfe
also said that analyses will continue to be done as they always
have been; the multiple outcomes model will be an addition.
Traditional methods for modeling combined outcomes are based
on the following tenets:
- Outcomes
are often correlated. Patients high on one outcome might
be high on another.
- Correlation
can arise from shared measured characteristics: Covariates
predict multiple outcomes. For example, diabetics have both
high hospitalization and high death rates.
- Correlation
can be modeled with regression: One outcome predicts another.
For example, mortality can be predicted by recent hospitalization
and recent low functional status.
Wolfe
highlighted two innovative methods for analyzing correlated
outcomes. First, frailty models introduce a patient specific
covariate to account for correlation. Frailty is an unmeasured
covariate that predicts the outcomes of interest (rates or
means). The frailty for each patient is imputed to fit the
outcomes for that patient. Second, Bailey, Krakauer, and Lin
have developed an innovative method to analyze correlated
outcomes.
Modeling
the Components of the Burden of Disease
R.
Clifton Bailey
Clifton
Bailey said that an analytical plan is needed for collecting
and analyzing data. We have chosen to use each component as
a cumulative measure, but the problem remains of how to put
the measures together. A probability summary is a consistent
way of dealing with these outcomes — morbidity, mortality,
and resource use. We use mathematical representations to capture
the essence of these components (domains). It is necessary
to deal with the correlations conjointly.
He showed
several graphs, including the declining hazard pattern of
post-transplant mortality. The risk of dying is very high
immediately after a procedure, and then the risk declines.
Post-listing mortality has a different pattern of increasing
hazard. The post-transplant morbidity curve rises and then
falls.
When modeling,
they make use of the explanatory variables that they want
to model. Morbidity and resource use could be modeled in any
of several different ways. In every case they have used the
cumulative distribution form. Each of those, in turn, is made
to depend on these explanatory factors. Therefore, the correlations
output by the model will be case-specific. For example, they
may arrive at one set of correlations for diabetics and another
set for nondiabetics.
Trivariate
Multiple Outcomes Model
Monica
Lin
Monica
Lin discussed how data were developed for applying the trivariate,
multiple outcomes model. The focus has been on the post-transplant
period. The data set is based on a cohort of Medicare-eligible
patients listed in 1996 and followed until the end of 2000.
Transplants are included only if they occurred prior to 2000
(minimum of 1 year of post-transplant follow-up. Data sources
are:
- OPTN:
Data on patient characteristics at listing and transplant,
and on disability (from the follow-up form).
- USRDS:
Data on hospitalizations from consolidated OPTN and Medicare
data (sole source on experience on dialysis).
- Medicare:
SS Death Master File. Data on hospitalizations (morbidity
and resource use).
The model
may provide an evidence-based, objective answer to the question
posed by many patients, "What will happen to me?"
Estimates are made by simultaneously modeling survival, resource
use, and morbidity.
Among
the questions that the model could address include these:
- Benefit:
What is the outcome for the average patient with and without
transplant?
- Subgroups:
What differences are there among different patient subgroups?
- Policy
1: Which patient currently on the list is likely to
benefit most from receiving this organ?
- Policy
2: How would outcomes be changed by proposed policy
changes?
- Individuals
within subgroups: How much variation is there among
individuals?
- Correlation:
Are the individuals who are at high risk for one outcome
also at high risk for other outcomes?
The DWG
is continuing work on simultaneously modeling of four outcomes
and is also looking into waitlist outcomes. A paper has been
submitted to the American Journal of Transplantation.
Some discussion
ensued. Hunsicker made a point about distinguishing between
policy formulation and the personal decisions made by patients
and their doctors. OPTN focuses on policy, but ACOT may wish
to take a broader view to reflect patients' preferences. Discussions
about possible outcomes occur all the time between transplant
surgeons and their patients, but there have not been any data
to inform these discussions. These data allow the patient
to make decisions about the tradeoffs involved.
According
to Hunsicker, the Data Advisory Committee (DAC) was concerned
about the additional burden on transplant centers that would
result if the Karnofsky Index were adopted, although the vote
was 18-2 in favor of adopting the Karnofsky index. DAC proposed
a pilot study for collecting SF-36 data that would involve
random sampling with oversampling of certain subgroups. Centers
will not need to get separate Investigative Review Board (IRB)
approvals.
Nancy
Ascher asked if the analysis takes into account a center effect.
She suggested simplifying the language describing the model
and she recommended that in order for patients to weigh risk
and benefit, the center effect becomes paramount.
Hunsicker replied that the model is not intended to look at
center effect. He agreed that the model might be improved
by incorporating center effects.
Barry
Kahan said that it could be an onerous task to collect data.
He asked if it would be possible to go to a pharmaceutical
company and test some of the hypotheses with data that have
already been collected on existing cohorts.
Hunsicker
replied that the only burden will be associated with the letters
and consent forms patients receive regarding the Karnofsky
index. Some patients will ask about the letter they will receive.
The consent letters will be very detailed. He also said that
in regard to conducting a retrospective study that the existing
cohorts are not very standard.
Kahan
said that in virtually every clinical study, we have already
collected Karnofsky and SF-36 data. We could set up two study
arms and test the models.
Hans Sollinger
noted that clinical practice is evolving very quickly. We
have learned how to deal with extended donors. We can almost
equalize outcomes using various protocols to conserve kidney
function. It is a challenge to keep up with these radical
changes in our clinical approaches. Looking at retrospective
data would be a useful scholarly practice, but to base clinical
decisions on old data could be perilous.
Flora
Solarz said that with the growing waitlist, we do not know
what outcomes we are promising our patients. We need to look
at this seriously and weigh the ethical implications. We talk
much about informing patients and that is what this discussion
is really all about. Resource use seems parallel to hospitalization.
It may be more useful to consider resource utilization
by the patients than by the hospitals. Another
danger is that predictions about hospitalizations could raise
the eyebrows of insurance companies when they decide who will
be transplanted.
Hunsicker
(to Sollinger) said that collecting the data does not necessarily
mean that a recommendation will flow from it. The present
is always different from the past, but we cannot just throw
away those data. We are always better off knowing something
than not knowing something. Regarding Solarz's comments, he
said that it would be very useful to know something about
the individual's costs in terms of resource utilization, but
we have to look at the costs we can get at more easily.
Kathy
Turrisi noted that, in the past, staff at the center were
the ones who completed the Karnofsky or SF-36 forms. It would
be more useful if the patients themselves were asked for their
input on the forms. Hunsicker replied that the plan is to
mail out the full SF-36 forms to the patients because the
centers do not necessarily know how the patients are doing.
The Karnofsky Index would be done by the centers. We will
have to carry out a fair bit of education to get the forms
filled out correctly.
Young
urged caution because if we hone things down too precisely,
we may think we know what's best. If the model outcomes are
memorialized as policy, might patients be denied transplant
because of the potential for poor outcomes due to their race,
co-morbidities, or other factors? It could get so burdensome
that we will not transplant because of potential risks. We
must be very careful because the data could be misused.
Michael
Williams expressed reservations about using specific percentages
in patient discussions. These are just probabilities. We need
to present data in useful ways. Trouble arises when patients
are promised specific outcomes. It is best to say that we
will try our very best, but here are the risks.
Hunsicker
said that having the data would help inform these discussions.
For example, with livers we have found that the sickest patients
are not futile transplants; this is the group that actually
receives the most benefit from transplantation.
Robert
Gibbons congratulated the group for looking at a broader field
of outcomes. We are already using statistical models albeit
inefficient ones for making transplant decisions. For example,
the Model for End-stage Liver Disease (MELD) is based on a
univariate model. We need to continue in this path to look
at multivariate outcomes.
Amadeo
Marcos said that we cannot continue using only patient and
graft survival as outcome measures. The issue is to do what
is best for patients. What is the weight that will be given
to each factor? Policy decisions will continue to be made
by the various appropriate committees of OPTN.
Three
Decades of Struggles and Triumphs: Reflections on 30-Plus
Years of Transplantation
Clive
O. Callender
Clive
Callender is the founder and head of the Minority Organ and
Tissue Transplantation Program (MOTTEP). He has performed
more than 300 kidney transplants. He left Minnesota in 1973
and started the program at Howard University. He shared some
of his ideas and thoughts as he reflected back on his 30-year
career.
Callender
identified 14 critical issues facing the transplantation community:
- Organ
donor/organ recipient disparity: As of January 2004,
this disparity represents 60,000 people. More than 16 people
die daily because of the organ donor shortage. Callender
said that the situation seemed hopeless when he started
because African Americans used to donate organs at lower
rates than other ethnicities because of many factors. This
trend, however, has changed. Minorities, who represent 25%
of the American population, made up 15% of donors in 1990
but comprised 28.5% of donors in 2000. In 1990 the organ
donor/million rate for Blacks was 22.4; in 2000 it had risen
to 40.8.
- The
Green Screen: The Green Screen is a symbol for the
lack of dollars or medical insurance or the ability to pay
for health care or the medication necessary to sustain the
health provided by transplantation. African Americans constituted
only 10% of those waiting for livers in 1995, yet African
Americans die more frequently of liver failure than do Whites.
"If you didn't have the green, you couldn't get on
the waitlist and you would die." The role of the Green
Screen in renal transplantation is undefined, but it must
exist because people are denied transplants due to a lack
of means to pay for post-transplant immunosuppressive therapy.
Callender mentioned the film "John Q." The Green
Screen is underappreciated as an obstacle to transplantation.
We are all accountable because we won't approve the taxes
necessary to pay for transplants for those of limited means.
- Prevalence
and incidence rates for kidney failure in Blacks (African
Americans) and other minorities: The incidence and
prevalence rates of end-stage renal disease (ESRD) for Blacks
(African Americans) and other minorities are disproportionately
high because of their increased susceptibility to diabetes
and hypertension (twice that of Caucasians).
- Disproportionate
effect of human immunodeficiency virus (HIV) on Blacks (African
Americans) when compared to Caucasians: It is not clear
why the nephropathy of HIV is so largely a problem of African
Americans. Blacks (African Americans) with HIV experience
HIV nephropathy at 10 times the rate of other ethnic groups.
In fact, 93% of all AIDS nephropathy cases reported are
in African Americans.
- Dialysis
survival rates for Blacks: Blacks have patient survival
rates on dialysis that are superior to Caucasians. Callender
discussed some data regarding 1-year and 2-year mortality
rates of African American and Caucasian ESRD patients on
dialysis, showing that African Americans do much better
on dialysis than do Caucasians, but is this good news or
bad news? The USRDS report demonstrated that healthier blacks
remain on dialysis whereas healthier whites are transplanted.
This is really a negative data item. We cannot compare until
transplantation rates are equalized.
- Race
and science: Callender emphasized the need for completely
replacing the term "race" with the word "ethnicity"
in science. The human genome mapping project demonstrated
conclusively that all humankind, Homo sapiens, belongs to
one race. This finding once and for all makes it clear that
in science the issue of race is an illusion that must be
done away with. Using "race" is divisive and renews
the sociopolitical construct that denies the positive aspects
of each ethnic group and reenergizes the superior/inferior
designation. We are all one race with different ethnicities.
This change must occur throughout the scientific community,
the U.S. Census Bureau, and the Office of Management and
Budget, until the term "race" is replaced by ethnicity
in all scientific journals and census data.
- Compliance
rates for Blacks: Blacks and Latinos are no more noncompliant
than other ethnic groups. The groups that are least compliant
are adolescents and health care professionals!
- Unique
post-transplantation drug responses in African Americans
(Blacks): Blacks after transplantation metabolize transplant
medications differently than Caucasians and other ethnic
groups, thereby altering their responsiveness to these medications.
One of the reasons is that Blacks are more immunoresponsive
than other ethnicities. One study showed that 90% of African
Americans were hyperimmune in contrast to 66% of Caucasians
when pre-transplant immune responsiveness is studied. Therefore,
it is clear that Blacks require more powerful immunosuppressive
therapy than other ethnicities. In addition, cyclosporine
is poorly absorbed in Blacks. Prednisone's side effects
(hypertension, diabetes, and obesity) tend to be especially
problematic for African Americans. Blacks have to pay more
to get effective doses of Cellcept because the effective
dose for African Americans is higher than for Caucasians.
In many instances, gastrointestinal and bone marrow intolerance
are problematic for African Americans. The necessity of
using lower doses may increase the likelihood of acute rejection
episodes. Tacrolimus — one of the most potent immunosuppressants
— is associated with the development of posttransplant
diabetes at twice the rate in African Americans and Latinos
than when it is used in Caucasians. In addition, development
of insulin dependence tends to be permanent in African Americans
in contrast to the situation with Latinos and Caucasians
who generally experience reversible insulin dependence.
Part of the reason may lie in genetic differences in the
P450 cytochrome oxidase system or in the higher level of
immune responsiveness of African Americans. Elucidation
of this enigma may improve graft survival for African Americans.
- Delayed
transplantation referrals for Blacks and other minority
patients: Blacks are referred later for kidney transplants,
are placed on the waitlist later, and are transplanted later
than Caucasians, regardless of financial status. Callender
referred to the work of Alexander and Sehgal7
who objectified and, for the first time, put in print what
had been suspected for some time: Blacks, women, and poor
people encounter barriers to transplantation. Danovitch,
Cohen, and Smits8 propose
using the European (Eurotransplant) model, which defines
waiting time as beginning when the patient begins hemodialysis
in an uninterrupted fashion. This simple change would level
the playing field in regard to delayed referral times for
African American transplant candidates.
- Waiting
times for Blacks and other minorities in transplantation:
Waiting times for kidneys are twice as long for Blacks and
other minorities as for Whites. A study by Roberts et al.9
shows that we have made some improvements in transplantation
rates for Blacks, but we still have a long way to go.
- The
fate of kidneys and other organs transplanted into Blacks:
African Americans after transplantation of kidneys and other
organs have 10% to 20% poorer graft survival rates than
all other ethnic groups (at 2–5 years after transplantation).
This trend is evident whether the organ was recovered from
a living related donor, living unrelated donor, or a deceased
donor. Why is not known. In 1977 Opelz et al.10
first reported that kidney donor and graft survival rates
in African Americans were the poorest among all ethnic groups.
A subsequent analysis of the OPTN/UNOS database showed that
Black recipients of deceased donor or living donor kidneys
were associated with statistically significantly poorer
graft survival regardless of donor ethnicity. Black recipients
of deceased livers and hearts had significantly lower graft
survival rates when receiving organs from Whites, Blacks,
or Latinos. The reasons for these ethnic differences are
unknown. When looking into half lives for kidney transplants
across all ethnic groups, it can be seen that Asians have
the most favorable half lives and African Americans have
the shortest half-lives (living or deceased donor transplants).
It had been hoped that increasing the numbers of black donors
would increase graft survival, but that may not be true.
Many hypotheses have been offered and disproven (e.g., too
few black donors, HLA mismatch, inequitable distribution).
The negative correlation of hypertension, hyperimmune responsiveness,
and institutional racism seem clear. Why hypertension is
such a highly negative correlate remains a mystery and should
be a focal point for research and study. The newest immunosuppressive
regimens may provide some answers. The most hopeful and
most correctable problem is institutional racism. There
is a need for changing lifestyles and thereby reducing the
need for organ transplantation. MOTTEP is already addressing
this.
- The
fate of donated African American kidneys and other organs:
When African American organs are transplanted into African
Americans or Caucasians, they have significantly inferior
graft survival. Black to black donation has the highest
relative risk of graft loss (kidney or liver). African American
kidney donors survive for shorter periods than all other
ethnicities. It would be inappropriate to recommend, however,
that all organs donated by African Americans should be considered
high risk. The data reflect the need for more research.
We do not understand the reasons for the graft survival
disparity, nor do we have a strategy to overcome this.
- Inequitable
allocation schema: Inequitable, discriminatory allocations
were the consequence of HLA antigen matching at the A and
B loci. The work of Roberts et al. was instrumental in ending
a system that was ethnically discriminatory to Blacks since
1989. UNOS abolished antigen matching at the HLA-A locus
by 1994 and the B locus by 2002. Eliminating these criteria
has increased public trust in the donation and allocation
processes.
- The
effects of institutionalized racism: Deep-rooted conscious
or subconscious classifications of ethnic groups into superior
and inferior classes may be the most important obstacle
to overcome to eliminate transplant health disparities.
"Institutionalized racism" is a term that is unrecognized
in the field of ESRD or transplantation. To say it is taboo
is an understatement. Yet, as we look at the disparities
discussed previously, it appears that few items are as pervasive
or as understudied as the phenomenon in this field. The
human genome project has made it clear that we are all the
same species, yet this insidious attitude persists. The
pathophysiologic consequences of institutionalized racism
have been demonstrated by Jules Harrell11
and others since 1982. Institutional racism is likely responsible
for the longer waiting times for Blacks compared to Whites
for kidney transplantation, delayed referral of Blacks for
kidney transplantation, Blacks receiving kidney transplants
later than Whites, and Blacks being referred later, if at
all, for extrarenal transplants.
Callender
recommended the following actions for eliminating ethnic disparities:
- Provide
adequate funding for further research into the 14 highlighted
areas.
- Allocate
an additional $200 million to the National Center on Minority
Health and Health Disparities to address research questions
and help eliminate the disparities in transplantation and
donation.
- Eliminate
the word "race" and replace it with the term "ethnicity"
in the science and health arena and in the federal government.
- Develop
a national strategic plan with goals and implementation
dates with a community-based effort to eliminate institutionalized
racism by educating and empowering the minority and majority
communities.
- Encourage
the involvement of the minority communities in health prevention
activities to help ameliorate the need for organ transplantation.
- Develop
an empowered minority community and enlist its support in
changing behavior that fosters institutionalized racism.
William
Harmon noted that one of ACOT's first recommendations to the
Secretary was to support research into ethnic disparities.
Turrisi
said that, in Charleston, it has been her experience that
many African Americans have not been managed aggressively
for hypertension and diabetes. That may be an early factor.
We are starting to look at those disparities. Callender observed
that we are not treating post-transplant hypertension properly
either. Right now we have abject ignorance. We need a strategic
plan to address it.
Roger
Evans asked why Callender is using the word "disparities"
instead of "inequities." Callender said that it
is the same thing. Evans replied that the word "inequities"
implies a cause. Disparities is just politically correct.
We all want all Americans to have successful transplants.
What helps one group helps the others.
Fritz
Port made the point that three disadvantaged antigens
are more common in the African Americans than in Whites. When
we combine dialysis and transplantation and adjust for diabetes,
hypertension, and age, we find that blacks have better outcomes.
It is a profound observation, which we need to analyze further.
Recent
Congressional Action
Emily
Marcus Levine
The Organ
Donation and Recovery Improvement Act (formerly the Frist
Bill, now Public Law 108-216, an amendment of the National
Organ Transplant Act (NOTA) passed Congress overwhelmingly
and was signed into law by the President on April 5, 2004.
The Act
expands the Secretary's authority to improve donation and
transplant system and symbolizes Congress's recognition of
the importance of these issues.
Section
3 of the Act may be of particular interest to ACOT. By way
of background, Section 301 of NOTA makes it illegal for any
person to "...knowingly acquire, receive, or otherwise
transfer any human organ for valuable consideration..."
Statutory exclusions include "...expenses of travel,
housing, and lost wages incurred by the donor of a human organ
in connection with the donation of the organ." The Organ
Donation and Recovery Improvement Act authorizes the U.S.
Department of Health and Human Services (HHS) to disburse
grants ($5 million per year for 2005–2009) to reimburse
living donors for allowed expenses. This is payment of last
resort. The Secretary may also pay such expenses for up to
two people to assist the donor. Preference is to be extended
to people whom the Secretary determines are least likely to
otherwise meet expenses.
Section
4 deals with public awareness; studies and demonstrations.
This section establishes new grant/contract authorities and
provides for a public awareness program to be overseen by
the Secretary directly or administered through grants/contracts.
This section also addresses the need to educate the public
and generate awareness about the need for donors. Some programs
already exist, but this provision will be supplementary. Also
included in this section is authority for issuing peer-reviewed
grants/contracts with the intent to conduct studies and demonstration
projects for both deceased and living donors.
Section
4 also gives new authority to issue grants to OPOs and hospitals
(must be trauma hospitals and those serving populations of
200,000 people) for the purpose of establishing programs to
coordinate organ donation activities to increase donation
rates. This measure will help states in their efforts to increase
donation. Finally, there is an educational activity section.
HHS will develop educational materials to inform health care
and other professionals on donation issues. These programs
must coordinate with OPTN and other organizations.
Section
5 confers new authority on the Secretary, through the Agency
for Healthcare Research and Quality, to develop scientific
evidence in support of efforts to increase donation and improve
the recovery, preservation, and transportation of organs.
The Secretary is authorized to conduct or support research,
carry out a review of the scientific literature, develop and
adopt proven practices. Other activities mentioned include
research and dissemination of findings, development of a uniform
clinical vocabulary for organ recovery and so forth, enhancement
of skills in the workforce, and assessment of technologies.
Section
6 directs the Secretary to report to Congress on transplant-related
activities under NOTA. The report is to discuss which activities
have affected rates of organ donation and recovery and must
include an analysis to evaluate the effectiveness of activities.
The practices to be covered are to include those of the states,
organizations, and other countries. The initial report is
due in 2005, and subsequent reports every 2 years thereafter.
The 2005 report must:
- Address
donation practices for most effective practices and existing
barriers
- Evaluate
living donation practices
- Evaluate
federally supported and conducted efforts
- Evaluate
state registries
- Include
a plan to improve federally supported and conducted activities.
Section
7 authorizes the Secretary to establish and maintain mechanisms
to evaluate the long-term effects associated with living organ
donation.
Section
8 is likely to involve ACOT in meaningful ways. This section
directs the Secretary to evaluate proposals to increase cadaveric
donation and report to Congress on those proposals. The Secretary
must consult with the community (advocacy groups representing
populations likely to be disproportionately affected by proposals).
The report is due by 12/31/2004. Kress noted that there is
likely to be a role for ACOT in the development of this report,
which he referred to as the "Section 8 Study." He
reminded the group that this meeting will result in direction
and guidance to the Subcommittees. The recommendations coming
out of the November meeting will then have to be addressed
quickly in order to roll those recommendations into the Section
8 Study.
Section
9 repeals section 371(a)(3) of the Public Health Service Act
(part of NOTA), which gave grant/contract authority for special
projects designed to increase the number of donors. It had
been relied upon by HRSA's Division of Transplantation but
has now been replaced with more expansive authorities and
a larger pool of eligible entities.
Levine
noted that the new law does not address the controversial
valuable consideration issues under section 301, nor does
it appropriate any funds. (Funds were only authorized.) Language
was struck from Frist's original bill about demonstration
projects to test incentives that otherwise might be barred
under NOTA section 301.
Progress
Report on the HHS Breakthrough Collaborative and the Latest
Secretarial Organ Initiative
Dennis
Wagner
Virginia McBride
Dennis
Wagner told the story of the Breakthough Collaborative and
shared the broad outline of the YIELD initiative, which is
aimed at increasing the number of organs transplanted per
donor.
The Organ
Donation Breakthrough Collaborative is "committed to
saving or enhancing thousands of lives a year by spreading
known best practices to the Nation's largest hospitals to
achieve organ donation rates of 75% or higher in these hospitals."
Wagner noted that the involvement of the Joint Commission
on Accreditation of Healthcare Organizations (JCAHO) in the
Collaborative is largely due to ACOT's work.
A collaborative
is an intensive, full-court press to facilitate breakthrough
transformations in the performance of organizations, based
on what already works. The methodology can be implemented
in a variety of issues and arenas. In particular, the goals
of the Organ Donation Breakthrough Collaborative are to:
- Increase
the average conversion rate of eligible donors from the
current average of 43 percent to 75 percent in the Nation's
300 largest hospitals
- Increase
donations by up to 1,900 donors per year
- Increase
the number of transplantations by 6,000 per year
- Help
save the lives of thousands of people each year and prevent
up to 17 deaths per day.
Wagner
noted that 50% of eligible deceased donors are found in 223
hospitals; 90% are found in 953 hospitals. When one examines
1-year conversion rates among the largest 300 hospitals, conversion
rates range from 10% to more than 90%. Most cluster around
the national average of 40% to 50%.
The Collaborative
has conducted site visits at six top-performing OPOs to develop
a menu of practices that generate high conversion rates. Wagner
showed a slide of conversion rates by donation service area
(DSA). The average rate goes from more than 80% to 30% or
less. This is not a case of being clumped around the average.
The Collaborative
team consists of about 500 people at 95 large hospitals and
42 organ procurement organizations. The faculty includes 13
leading practitioners from OPOs and hospitals that have high
conversion rates. Also, a leadership coordinating council
supports the Collaborative. (Several council members were
present in the room, including several members of ACOT.)
The Collaborative
functions within a framework of learning sessions. Learning
Session 1 (LS1) is dedicated to the study of change concepts
and the Deming PDSA model (Plan, Do, Study, Act). LS2 encompasses
more PDSA cycles. LS3 is dedicated to sustaining progress.
The LS4 meeting will probably be held in November. Each team
reports monthly. The learning sessions were also broadcast
via satellite to large hospitals across the county to enable
remote participation.
Susan
Gunderson shared some of her insights gained as a result of
her experience with the Collaborative. She said it has been
very helpful to get hospital people together with OPOs so
we are looking at the common problem and seeing how we can
work together. The other real benefit is information sharing.
The information is really used to bring about practice change.
It is timely and helpful. She also spoke about the benefits
gained by bringing the other players to the table (e.g., JCAHO,
American Hospital Association) to hear their views on organ
donation. She admitted that the Collaborative is an enormous
amount of work.
Michael
Williams spoke about attending the first Collaborative: "We
learned that our effort was designed to bring together transplant
coordinators, nurses, and physicians to work together."
He cautioned, however, that it may be difficult to isolate
effects of the Collaborative versus other interventions, perhaps
confounding data collection and analysis for other studies.
Mike Seely
said that the energy generated by the Collaborative is infectious.
"Everyone is coming together to solve problems."
He attended the learning session in Dallas and was struck
by the size of the group. He observed that, historically,
all these groups have been working in silos. "It is an
eye-opening experience for OPOs to be at a table with their
hospital peers." The Collaborative makes very effective
use of the open space technique.
Virginia
McBride then spoke about the results of the Collaborative's
Action Period 2. She noted that the Collaborative in many
respects carries out Acot Recommendations 12-16. Specifically,
for example, ACOT's recommendation 16 states that "the
regulatory framework provided by the Center for Medicare &
Medicaid Services (CMS) for transplant center and OPO certification
should be based on principles of continuous qua |