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February
8, 2008
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The recent ACCORD diabetes trial (Action to Control Cardiovascular
Risk in Diabetes) was halted due to the increased death rate in
the intensive treatment program (14 deaths per 1000 patients per
year versus 11 per 1000 patients per year in the standard treatment
program; a difference of 0.3 deaths per 100 patients per year).
The
trial was sponsored by the National Heart, Lung, and Blood Institute,
and raised concerns about the safety of utilizing severe glycemic
controls in diabetics.
Per
this trial, the American Diabetes Association (ADA) issued a statement
that “Strongly encourages people with diabetes not to alter
their course of treatment without first consulting with their health
care team.”
The ADA further stated that “The American Diabetes Association
continues to encourage good control of blood glucose for the management
of diabetes and its complications.”
The safety issues were not related to good control of blood
glucose in diabetics, but rather to extreme blood glucose control
methods.
The ACCORD trial involved “An intensive treatment program
targeting normal blood glucose values and an A1C less than 6 percent
or a standard treatment program versus an A1C between 7 percent
and 7.9 percent.” These perimeters are obviously too strict
and can result in early-death in some diabetics.
The American Diabetes Association (ADA) retains the position that
“The importance of glucose control in diabetes is firmly established.”
The Glycemic Research Institute (GRI) has conducted diabetes research
for the past 25 years, and fully concurs with the ADA on this topic.
GRI states “Without blood glucose control, both as a deterrent
and as a standard in the treatment of diabetes, there is no hope
for normal glucose homeostasis.”
Diabetics and pre-diabetics that maintain normal glucose perimeters
can avoid clinical intervention, including insulin treatment.
The landmark Diabetes Control and Complications Trial (DCCT), and
the U.K. Prospective Diabetes Study (UKPDS) have shown that “Improved
glucose control to a level of approximately 7 percent reduces the
complications of diabetes dramatically.”
In the intensive treatment program, the ACCORD trail aimed
to achieve A1C less than 6 percent in diabetics, which
proved too severe and resulted in early mortality. It is obvious
that A1C levels less than 6 percent are too restrictive
and triggers metabolic events that can lead to death.
“The American Diabetes Association continues to advise people
with diabetes to strive for an A1C (a measure of long-term blood
glucose control) of less than 7 percent.”
“More than half of the population with diabetes in the U.S.
have an A1C less than 7 percent and this overall level of glucose
control appears to be of great benefit rather than harm.”
CONCLUSION
In terms of efficacy and/or safety, the issue of blood glucose control
in diabetics and diabetics was never in question. The issue is the
severity of A1C levels. A1C levels less than 6 percent are now implicated
in early-mortality, but A1C levels of less than 7 percent in diabetics
are still recommended by the American Diabetes Association and the
Glycemic Research Institute.
Statement
from the American Diabetes Association
Related to ACCORD Trial Announcement
06-FEB-2008
|
ALEXANDRIA,
Va., Feb 06, 2008 /PRNewswire-US Newswire via COMTEX
ACCORD data raises concerns; Group advises patients with diabetes
to maintain good control of blood glucose and talk to their doctor.
In response to today's announcement by the National Heart, Lung,
and Blood Institute, which sponsors the ACCORD (Action to Control
Cardiovascular Risk in Diabetes) Trial to stop the intensive blood
glucose (sugar) control sub-study in ACCORD due to safety concerns,
the American Diabetes Association strongly encourages people with
diabetes not to alter their course of treatment without first consulting
with their health care team.
The American Diabetes Association continues to encourage good control
of blood glucose for the management of diabetes and its complications.
The ACCORD trial randomized patients with diabetes and vascular
disease or multiple cardiovascular risk factors to an intensive
treatment program targeting normal blood glucose values and an A1C
less than 6 percent or a standard treatment program with an A1C
between 7 percent and 7.9 percent.
The intensive participants in ACCORD are now being switched to the
standard treatment program because of an increased death rate in
the intensive treatment program (14 deaths per 1000 patients per
year versus 11 per 1000 patients per year in the standard treatment
program; a difference of 0.3 deaths per 100 patients per year).
The American Diabetes Association continues to advise people with
diabetes to strive for an A1C (a measure of long-term blood glucose
control) of less than 7 percent. Recent data indicates that more
than half of the population with diabetes in the U.S. have an A1C
less than 7 percent and this overall level of glucose control appears
to be of great benefit rather than harm.
The importance of glucose control in diabetes is firmly established.
Evidence from the landmark Diabetes Control and Complications Trial
(DCCT), and the U.K.
Prospective Diabetes Study (UKPDS) show that improved glucose control
to a level of approximately 7 percent reduces the complications
of diabetes dramatically.
The Association's treatment guidelines also state that treatment
should be tailored to the individual patient and that for some people
with diabetes, intensive glucose control may not be warranted. Of
note, the American Diabetes Association (in its Standards of Medical
Care) states: "Less stringent A1C goals may be appropriate
for patients with a history of severe hypoglycemia, patients with
limited life expectancies, children, individuals with comorbid conditions,
and those with longstanding diabetes and minimal or stable microvascular
complications."
This recent announcement by ACCORD investigators suggests that very
intensive glucose lowering treatment aimed at normalizing blood
glucose (A1C<6%) may be detrimental, at least in middle-aged
and older adults with vascular disease or multiple risk factors
for vascular disease.
The exact reason for the increased death rates with intensive treatment
that occurred in ACCORD is not yet known. However, an analysis of
the ACCORD data indicates that the detrimental effect of intensive
therapy was not due to hypoglycemia or any specific combination
of drug therapies.
The American Diabetes Association looks forward to more analysis
of the data from ACCORD, as well as other ongoing studies that may
shed more light on this issue. However, at this time, the American
Diabetes Association advises people with diabetes who have existing
cardiovascular disease (CVD), or multiple CVD risk factors, to consult
with their health care team about their treatment goals and to ensure
that their blood pressure and cholesterol are appropriately managed.
The American Diabetes Association is the nation's premier voluntary
health organization supporting diabetes research, information and
advocacy. Founded in 1940, the Association's mission is to prevent
and cure diabetes and to improve the lives of all people affected
by diabetes.
The Association's commitment to research is reflected through its
scientific meetings; education and provider recognition programs;
and its Research Foundation and Nationwide Research Program, which
fund breakthrough studies looking into the cure, prevention, and
treatment of diabetes and its complications.
Visit the American Diabetes Association at www.diabetes.org or call
1-800-DIABETES (1-800-342-2383).
Note
to editors: Information from the NHLBI can be found at
www.nhlbi.nih.gov
SOURCE American Diabetes Association
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