RE: DOCKET NUMBER 2004D-0468
DRAFT GUIDANCE FOR DRUG SPONSORS ON NSAIDS FOR USE IN ANIMALS AVAILABLE FOR
REVIEW AND COMMENT
| To: | VIA REGULAR MAIL |
| Division of Dockets Management (HFA-305) | |
| Food and Drug Administration | |
| 5630 Fishers Lane, Room 1061 | |
| Rockville, MD 20852 |
| VIA EMAIL: | lwilmot@cvm.fda.gov |
| Dr. Linda Wilmot | |
| Center for Veterinary Medicine (HV-114) | |
| Food and Drug Administration | |
| 7500 Standish Place | |
| Rockville, MD 20855 | |
| (301) 827-0135 |
RE: DOCKET NUMBER 2004N-0559
JOINT MEETING OF THE ARTHRITIS ADVISORY COMMITTEE AND THE DRUG SAFETY AND RISK
MANAGEMENT ADVISORY COMMITTEE
| To: | Kimberly Littleton Topper |
| Center for Drug Evaluation and Research (HFD-21) | |
| Food and Drug Administration | |
| 5600 Fishers Lane | |
| Rockville, MD 20857 | |
| Email: | topperk@cder.fda.gov |
| Fax: | 301-827-6801 |
Page 1 of 17
NSAIDS IN VETERINARY MEDICINE
TODAY
DERAMAXX: A COMPREHENSIVE DOCUMENTATION OF PROBLEMS
TABLE OF CONTENTS
1. Deramaxx - FDA Chronology
2. The Present Situation
3. Informed Consent
4. General Overview of Proposed Solutions
5. Specific Recommendations to the FDA/CVM
6. Table of references: (List all footnotes)
Prepared February 1, 2005
Page 2 of 17
On 8/21/02 Deramaxx received FDA approval “for the control of post operative
pain and inflammation
associated with orthopedic surgery in dogs.” (1)
Testing to that point included the study of only 217 animals supposedly
representative of 43 breeds,
however, it should be mentioned that all toxicity and safety studies were
performed on one breed, namely beagles, only. (2)
The 2 week Pharmacokinetics and Toxicity Study involved 12 beagles. All dogs
survived to the end of the
study. Conclusions were: (1) Non linear elimination of deracoxib occurs at doses
of 10 mg/kg and above;
(2) Elevated doses > 25 mg/kg are associated with COX-1 inhibition as evidenced
by gastrointestinal
signs; (3) The frequency and severity of the gastrointestinal lesions increased
with escalating doses. The
gastrointestinal lesions reported in deracoxib treated dogs at exaggerated doses
are consistent with
known non steroidal anti-inflammatory drug (NSAID) induced adverse events.
The 21 day Safety study involved 40 beagles. All dogs survived to study
termination. There was a dose
related increase in BUN values associated with administration of deracoxib
tablets at all doses. No clear
dose or test article relationship could be determined for histopathological
changes noted.
The 13 week Capsule Study in Dogs with a 4 week Recovery period involved 48
beagles. Its purpose
was: (a) To evaluate sub chronic toxicity of deracoxib when administered to dogs;
(b) To evaluate the
reversibility of any toxic effects following a 4 week recovery period; ©) To
determine absorption of the test
article and the relationship of plasma concentration with dosage and duration of
dosage. It was noted that
1 dog died of bacteria septicemia associated with renal abscess. Conclusions
were that Deracoxib
administered in capsules once daily for a period of 13 weeks, at doses up to 8
mg/kg body weight did not
produce toxicity in HEALTHY (emphasis added) dogs; and that the relationship
between deracoxib
administration and a renal abscess in one dog given 8 mg/kg is not clear. NO
WHERE IS THE
REVERSIBILITY OF ANY TOXICITY DISCUSSED, NOR IS IT MENTIONED THAT ALL DOGS
SURVIVED TO THE END OF THE STUDY.
Additionally, dosage instructions at this time were “3-4 mg/kg/day (1.4-1.8
mg/lb/day) as a single daily
dose, as needed for seven days”.
Thus, Deramaxx was approved for “ the control of post operative pain and
inflammation associated with
orthopedic surgery in dogs.”
Thereafter, and on January 16, 2003, the FDA objected to “Novartis’
dissemination of promotional
materials that are in violation of the Federal Food, Drug and Cosmetic Act (FDCA)
and the FDA’s
applicable implementing regulations.” More specifically, the letter referred to
Drug Experience Reports
dated August 30 through September 17, 2002, concerning Deramaxx. The FDA had
received a number
of industry and veterinarian complaints regarding the misleading claims in
Novartis’ September 9, 2002
_____________________
1
http://www.fda.gov/OHRMS/DOCKETS/98fr/03-29744.pdf
2 http://www.fda.gov/cvm/efoi/section2/141-203.pdf
Page 3 of 17
letter to veterinarians.
(3)
The statement “targeting the COX-2 enzyme while sparing the COX-1 enzyme” and
similar statements
throughout the promotions suggested that this conclusion had clinical
significance. This statement was
based upon in-vitro studies using cloned canine cyclooxygenase, the clinical
relevance of which had not
been shown. Novartis thus violated 21 C.F.R. Section 202.1(e)(3)(1) which
requires that an otherwise
misleading statement must include the appropriate qualification in the same
part.
The FDA additionally objected to the opening paragraph of the letter which
claimed Deramaxx as the “first
and only....Coxib class drug” as misleading. Novartis’ characterization failed
to identify the product as
NSAID and did not place appropriate recognition that Coxib was a subclass of the
NSAID class of drugs.
FDA approved labeling required the phrase “non-steroidal, anti-inflammatory of
the coxib class”
The FDA concluded that this promotional activity minimized risks and implied a
safer more effective
product than other drugs in the same drug class. It noted particular concern
because these specific
limitations were discussed with HFV-110 during the application review, YET
DESPITE DOCUMENTED
VERBAL ASSERTIONS THAT IT WOULD NOT, NOVARTIS PROMOTED THE COX-2 VS. COX-1
SELECTIVITY OF THE PRODUCT.
The FDA requested that Novartis immediately cease dissemination of these and
similarly violative
promotional pieces and to promote it’s product only in accord with the labeling
provided in the approved
application.
On February 11, 2003, the FDA authorized the new and expanded use of Deramaxx.
Dosing changes
accompanied each use. The field study tested 209 client owned dogs representing
41 different breeds for
43 days. Only 105 dogs received Deramaxx at the dosage of 1-2 mg/kg (0.45 - 0.90
mg/lb) administered once daily. (4)
Lameness assessments together with owner evaluations are offered as proof of the
effectiveness of
Deramaxx for the control of pain and inflammation associated with
osteoarthritis. BUN, potassium and
phosphorus values were elevated post study. Novartis noted that these changes in
clinical pathology
values were not considered clinically significant.
A 6 month Target Animal Safety Study was also performed to evaluate the safety
of Deramaxx
administered orally on a daily basis for 6 months. Sixty HEALTHY beagles were
used. All dogs survived to
termination of the study. Conclusions were that: “Deramaxx tablets were
clinically well tolerated by dogs
when administered at doses up to 10 mg/kg/day for 26 weeks even though, there
was a dose-dependent
increase in BUN values at doses > 6 mg/kg/day. Focal renal tubular degeneration
/regeneration was seen
_____________________________
3
http://www.fda.gov/cvm/index/regulatory/w011603na.pdf
4
http://www.fda.gov/cvm/efoi/section2/141-203s021103.pdf
Page 4 of 17
at doses > 6 mg/kg/day”.
(5) (6)
On April 23,2003, the FDA again requested that Novartis immediately cease
dissemination of all
advertising and labeling materials for Deramaxx which contained certain claims
or representations. (7) The
FDA specifically referred to the following DER submissions by Novartis:
| Your “Dosing Card” submission of September 24, 2002 Your “Sales Aid” submission of October 8, 2002 Your “Sales Aid on CD” submission of October 17, 2002 Your “Direct Mailer” submission of October 23, 2002 Your “Trade Ad” submission of October 25, 2002 Your “Trade Ad” submission of November 7, 2002 |
It went on to advise Novartis of its receipt of “additional
industry complaint letters regarding marketing
practices used in promoting the product Deramaxx (deracoxib).” The FDA further
advised of its review of
“these promotional materials and concluded that they contain false or misleading
statements in violation of
the Federal Food, Drug and Cosmetic Act (FDCA) and its implementing
regulations.” In addition, the FDA
noted that “the promotional materials contain information that suggests the use
of this product for
indications that are not provided for in the labeling.”
The FDA specifically noted that “These promotional materials present data from
in vitro studies (COX-2
selectivity, Cox-1 sparing, IC50 Ratio) in a way that suggests clinical
significance when no clinical benefit
has been established via substantial evidence”
It also noted that “These promotional materials imply or state that Deramaxx is
safer and more effective
than other non-steroidal anti-inflammatory drugs”. In this regard, the FDA
advised, “We are particularly
concerned because CVM’s objection to this claim was thoroughly discussed with
Novartis representatives
during application review. Representatives of Novartis agreed with CVM’s Office
of New Animal Drug
Evaluation that there would be no mention of a “different class for COX-2
selective NSAIDs and presently
approved NSAIDS.” Meeting memos and Minutes were footnoted to highlight these
conversations.
The FDA additionally objected to the fact that “These promotional materials
contain suggestions that the
drug is effective for managing induced synovial inflammation at the 1mg/kg
dose”. It went on to say, “Your
product is approved at 3-4 mg/kg for post-operative pain. Promotion of the
product at 1-2 mg/kg for
induced synovial inflammation suggest use of the product for osteoarthritis. At
the time of dissemination of
these promotional materials, we were not aware of substantial evidence or
substantial clinical experience to
demonstrate such efficacy. This representation was misleading because it
suggests a use that has not
been established by substantial evidence or substantial clinical experience.”
________________________
5
http://dil.vetmed.vt.edu./GreenBook/Updates/2003/2003_05.html
6
http://www.fda.gov/cvm/efoi/section2/141-203s021103.pdf (begins mid-page 8)
7
http://www.fda.gov/cvm/index/regulatory/w042303n.pdf
Page 5 of 17
The FDA also objected to Novartis failure to “communicate the
full extent of risk associated with NSAID
therapy” in it’s promotional materials.
NOT UNTIL December 22, 2003, ELEVEN MONTHS AFTER the FDA’s initial request to
cease
disseminating the violative and promotional pieces, did Novartis re-label its
product. Only after marketing
the drug under its new application, did Novartis revise it’s previously
misleading informational material
which had been disseminated widely in 2002 and 2003. On December 22, 2003,
Novartis issued it’s first
“Dear Doctor” letter in which it noted that Deramaxx was “our coxib-class
nonsteroidal anti-inflammatory
drug (NSAID). Novartis went on to talk about the new information that had come
to light, and advised that
it had updated the package insert to include a section reporting VOLUNTARY
post-approval adverse events. (8)
The updated section of the Deramaxx label warned, in decreasing order of
frequency, of numerous
adverse reactions, namely, Gastrointestinal, Hematological, Hepatic,
Neurological/Behavioral/Special
sense, Urinary, Cardiovascular/Respiratory, and Dermatological/Immunological
reactions. It went on to
warn, “In rare situations, death has been reported as an outcome of the adverse
events listed above.”
Novartis additionally notified Veterinarians that formerly “precautionary”
information had been moved to the
“Warnings section” of the label, namely:
“Sensitivity to drug-associated adverse events varies with the individual
patient. As a class,
cyclooxygenase inhibitor NSAIDs may be associated with gastrointestinal and
renal toxicity. Patients at
greatest risk for NSAID toxicity are those that are dehydrated, on concomitant
diuretic therapy, or those
with existing renal, cardiovascular, and/or hepatic dysfunction. Since many
NSAIDs posses the potential to
produce gastrointestinal ulceration, concomitant use of DERAMAXX tablets with
other anti-inflammatory
drugs, such as NSAIDS or corticosteroids, should be avoided or closely
monitored.”
Dosage and administration changes were also provided to the Doctors. “The
approved dose for controlling
pain and inflammation associated with orthopedic surgery is 3-4 mg/kg/day as a
single daily dose, as
needed, not to exceed 7 days.” This change in labeling put a maximum time
period during which
Deramaxx at post surgical doses. Novartis went on to advise “ For control of
pain and inflammation
associated with osteoarthritis, the approved dose is 1-2 mg/kg/day as a single
daily dose as needed.”
Recommended Guidelines for Deramaxx use were also provided and include:
1) “Examine all dogs before prescribing any medication, including
Deramaxx;
2) Conduct appropriate laboratory tests in dogs that may be at risk
including:
a. senior
pets
b. pets with
history of liver disease, inflammatory bowel disease, renal disease or any other chronic
condition.
3) Evaluate potential drug interactions in dogs being treated with
concurrent medications, especially
steroids or other NSAIDS.
4) Observe appropriate washout periods when switching from one NSAID
to another or when
following corticosteroid use with NSAID therapy. The length of the washout
period will vary,
depending upon the patient’s condition and other drugs involved.
5) Establish baselines and periodically monitor hematology and serum
biochemical data in long-term
patients.
6) Provide pet owners with the Deramaxx Owner Information Sheet
included with each Deramaxx
product shipment and share all potential benefits and possible side effects with
them before
sending them home with Deramaxx. (Note: Veterinarians can order updated
veterinary inserts and
________________________
8 http://www.fda.gov/cvm/index/safety/DDLDeramax122203.pdf
Page 6 of 17
updated client information
sheets free of charge at any time by calling 1-877-PET-LIT-1 and requesting item
number DER 030041B for the revised veterinary insert or item number
DER030040046B for the revised client information sheet).
7) Advise pet owners to watch for early signs of drug intolerance
including vomiting, diarrhea and lack of appetite, and if they see the signs,
discontinue use immediately and contact you.”
Thus, it was not until December 22, 2003, in the “Dear Doctor” letter, that the
veterinary community was notified of the proper classification of this drug and
the numerous adverse effects associated with its use. It is unknown at present
whether the general public was ever notified of these labeling changes and
adverse reactions through television, the same medium that was used to make them
aware of this new drug.
Thereafter, and on 11/29/04, the FDA issued a WARNING LETTER to Novartis
regarding its compliance with the ADE reporting requirements.
(9)
It began, “ During the period of January 20 through January 23, 2004, an
inspection was conducted at the headquarters of your veterinary pharmaceutical
operations in the United States of America (USA), known as Novartis Animal
Health US, Inc. (Novartis), which are located at 3200 Northline Avenue, Suite
300 in Greensboro, North Carolina. The inspection disclosed significant
deviations from the adverse drug experience (ADE) reporting requirements of
Section 512(l) of the Federal Food, Drug, and Cosmetic Act (the Act) and Title
21, Code of Federal Regulations (21 CFR), Sections (§§) 510.300 {effective prior
to June 30, 2003) and 514.80 (effective on June 30, 2003)”.
It further identified:
“The violations include, but are not limited to, the following areas:
1. Problems associated with your reporting practices of ADEs:
Novartis failed to submit timely and accurate information to the FDA regarding
serious ADEs
associated with the administration of its FDA approved animal drug product
Deramaxx™ (Deracoxib), New Animal Drug Application (NADA) 141-203, during its
first year of marketing. An example of this type of deviation is the recording
of the date sent to FDA {box 2b of the FDA
1932). Our inspection revealed significant discrepancies between what was
written in box 2b of the FDA 1932 and the postmarked date of the submission
and/or the date FDA received the submission. Some of Novartis’ initial and
follow-up ADE reports, including ones involving death,
were postmarked and/or received by FDA between 21 and 100 or more days after the
date recorded in box 2b of the FDA 1932, indicating that the date recorded in
box 2b is incorrect.
Another example is Case # US200302088, which was reported to
Novartis on February 19, 2003 (as indicated in box 2a of the FDA 1932). The form
indicates that it was sent to FDA on January 9, 2004, over 10 months after it
was reported to Novartis. This information should have been reported to FDA in a
timely manner, within 15 working days of receipt. Moreover, the report was not
received by FDA until January 27, 2004, again indicating that the date recorded
in box 2b was incorrect.
A third example is the revised submission for Case # US200207030, which was
submitted with your response dated February 25, 2004. Our investigators reviewed
the entire correspondence file between the owner of this animal and Novartis.
The FDA 1932 submitted with your response fails
_____________________
9
http://www.kentuckypetgazette.com/novartis.htm
Also,
http://www.fda.gov/foi/warning_letters/g5108d.htm
Page 7 of 17
to include specific
details regarding the results of blood work performed on this dog on
September 9, 2002 (a baseline) and further work performed in October 2002 and
November 2002, which was transmitted to Novartis by the owner between November
2002 and January 2003, in violation of 21 CFR § 514.80(b)(2)(ii). This
information should have been promptly reported to FDA within 15 working days of
receipt.
Your written response dated February 25, 2004, included revised standard
operating procedures (SOPs), which were supposed to address the observed
deficiencies. The revised SOP 5.2 (Volume 1, page 650) does not identify how
your firm will prevent incorrect information from being reported to FDA as was
noted during the inspection.
Your written response dated April 23, 2004, indicates that Novartis has employed
additional personnel for the receipt, investigation, and transmittal of ADE
reports. The response further states that your firm has also involved corporate
quality, compliance, and pharmacovigilance groups to assist in this process. But
following your response FDA has continued to receive late ADE reports along with
cover letters. For example, some of these letters were dated April 28, 2004; May
12, 2004; May 28, 2004; July 29, 2004; August 20, 2004; and September 21, 2004.
Problems associated with your reporting practices of ADEs related to
experimental studies:
Your firm failed to submit timely information to the FDA regarding post-approval
studies involving new animal drugs. Two specific failures were identified during
the inspection.
The first one was the failure to submit information from completed pilot studies
as part of the clinical experience in the annual Drug Experience Report (DER),
as required by 21 CFR § 510.300(a)(1) (effective prior to June 30, 2003 and
514.80(b)(4)(iii) (effective on June 30, 2003). Our investigators identified
over pilot studies in your master study list. Dr. Tebbit stated that Novartis
has never submitted information about their pilot studies as part of the annual
DER, unless they are part of an Investigational New Animal Drug Application
(INADA) or a pivotal study.
The second one was the failure to submit serious, unexpected ADEs involving
animals under study to the FDA within 15 working days of first receiving the
information, as required by 21 CFR § 510.300(b)(2)(l) (effective prior to June
30, 2003) and 514.80(b)(2)(I)
(effective on June 30, 2003).
One study involving Deramaxx (Deracoxib), NADA 141-203, in cats involved a late
submission ™ on of ADEs. The experiment, which was completed in July 2003,
involved 14 animal deaths and other serious ADEs. These ADEs were not reported
to the FDA within the required 15 working days time frame, but were reported
only after the conclusion of the inspection of your facility, on February 24,
2004. Although your submission dated February 24,2004, indicates that it
was Novartis’ intent to disclose the safety information from the cat study, your
firm failed to disclose this information from other studies found in the master
study List.
For example, a protocol entitled "The Acute Safety Study of an Injectable
Deracoxib (SD-6746) Formulation In Dogs” was submitted to the FDA under the
INADA 010-865 on April 15, 2002. This was approximately three months after the
master study list indicates the pilot study was
completed. The study clinical data was not received by the FDA until October
2004. FDA acknowledges that your firm has revised its SOPS and obtained
principal investigator agreements to submit all 15-day ADEs in post approval
studies as drug experiences. But your response does not clarify that you also
understand that you must submit ADEs in the periodic drug experience report as
clinical data, unless they were previously reported, as required by 21 CFR §
514.80(b)(4)(iv)©).”
The FDA went on to advise:
“The specific violations noted in this letter are serious and may be symptomatic
of serious
Page 8 of 17
underlying problems.
1. You should take prompt action to correct these deficiencies. Failure to
promptly correct these deviations may result in regulatory action without
further notice. These actions may include, but are not limited to, seizure
and/or injunction. Federal agencies are advised of all Warning Letters about
drugs so they may take this information into account when considering the award
of contracts.
We request that you reply in writing within fifteen (15) working days of receipt
of this letter describing the corrective actions you have implemented, or are
planning to implement, to prevent a recurrence of the violations noted above.
Please include copies of any available documentation demonstrating that
corrections have been made. If corrective actions cannot be completed within
fifteen (15) working days, state the reason for the delay and the time within
which the conditions will be completed.”
Thereafter, and on December 1, 2004, Novartis issued another “Dear Colleagues”
letter in which the DERAMAXX Update: Clinical Experience with DERAMAXX was
provided. This update contained a “summary and analysis of the adverse drug
experiences (ADEs) reported to the FDA during the first 18 months of DERAMAXX
use.”
Novartis further stated that “review and analysis of these data have shown that
six of 10 reported ADEs in canine osteoarthritis resulted in unintentional
overdose”. It went on to urge prescription of this drug “according to
recommended guidelines for dosing, patient selection and product administration”
and stressed the two different dosing regimens for DERAMAXX.
Please note, this update, was based on 1680 Adverse Drug Events (ADEs) As of
January, 3, 2005, ADEs numbered 2400, thus a discrepancy exists in the present
number of reported ADEs and those at the time of publication of this Novartis
document. This update additionally fails to consider the ADE violations noted by
the FDA in it’s November 29, 2004 warning letter to Novartis, just 2 days prior
to the issuance of this update.
The foregoing chronology is submitted to reveal the story of Deramaxx through
the eyes of a pet owners across the country. Documentation of the human-animal
bond and the positive effects on human health and well-being of animal
companionship is extensive, and at this time, statistics reveal that the
overwhelming majority of owners consider their pets as members of their family.
This chronology, the facts of which were deciphered from Freedom of Information
material and other internet material, reveals extremely minimal testing for a
veterinary drug to enter the market, blatant disregard by the drug manufacturer
to represent the product accurately in its informational material, and numerous
warnings and violations issued by the FDA to the drug manufacturer without any
apparent immediate compliance. Per the chronology above, it took Novartis 11
months to re-label it’s product as originally approved by the FDA, yet during
this 11 month period, it expanded the market for this product by obtaining
approval for it’s use
for the control of pain and inflammation of osteoarthritis. Furthermore,
Novartis has failed to timely file ADE’s with the FDA.
Additionally, when one considers underreporting of Adverse Drug Events, namely,
that the FDA receives by direct report less than 1% of suspected serious ADE,
the concern of the pet owner is magnified. (10)
_________________________
10 http://www.fda.gov/medwatch/articles/medcont/postrep.htm#lssrd
Page 9 of 17
As of January 3, 2005, the
FDA reported the following information
Deracoxib - Oral Dog
Reviews: 2352
Treated: 2400
Reacted: 2371
Died: 515 (11)
If underreporting has occurred as estimated, then deaths following the
administration of this drug are actually closer to 51,000 in number.
Additionally, 515 deaths as of January 1, 2003 represents a 21% mortality rate.
This corresponds roughly with the 20.7% death and euthanasia (secondary to side
effects) rate published by Novartis in it’s December 1, 2004 letter to
“Colleagues”.
THE PRESENT SITUATION
Animals, specifically dogs, have become central parts of our lives to the extent
that they are cared about as if children to millions of people, and valued
beyond all monetary considerations. Technology and medicine are advancing at
rapid rates, resulting in the proliferation of an ever increasing number of
drugs available for both humans and animals. Drug companies are motivated by
profit margins. Their reason for existence is to sell the greatest amount of
drugs possible and maximize their earnings.
In human medicine, there is (at least theoretically) a value placed on human
life more relatively proportionate to its actual value to others. In veterinary
medicine, this is not the case, as animals are still legally *property* and thus
considered worth, at maximum, purchase or replacement value, which is an
infinitesimal fraction of their actual value to owners. (Note recent work on
creating new class of property *sentient property* for this/related reasons).
Physicians are consequently held to a higher level of liability for malpractice.
In addition, and IMPORTANTLY, there exists the *intermediary* of the pharmacist
involved in dispensing of medication to humans, which position oversees the
safety of each prescription for the individual patient.
In veterinary medicine, there is no intermediary position of “pharmacist”. THE
VETERINARIAN IS THE PHARMACIST, leaving millions upon millions of animal owners
IN the sole hands of their veterinarian, with drug companies and the FDA/federal
government purportedly behind them, each and every time medication is dispensed
to them. Dispensing drugs for animals is akin to dispensing them for children:
in both cases the patient cannot speak for themselves, evaluate the drug, or
even report side effects as they occur. Therefore, extra precautions are
prerequisite and essential when dispensing medications to either children or
animals.
The points above have tragically resulted in a situation today that has
genuinely reached crisis proportions:
Tens of thousands of animals are being unnecessarily killed each year by side
effects of drugs dispensed to them by veterinarians. They are dying unnecessary
deaths which could have been, and CAN BE prevented, leaving legions of
grief-stricken owners with no notion of how to cope with the death of their
beloved animal friend in which they themselves unknowingly participated.
INFORMED CONSENT
January 15, 2004 Emerging issues regarding informed consent
__________________________
11 http://www.fda.gov/cvm/index/ade/ade_cum.htm
Page 10 of 17
“The
staff at the Food and Drug Administration's Center for Veterinary Medicine
has conducted a two-year review of consumer messages to our adverse drug
experience hotline. The review indicates increasing concern by consumers about
risk and benefit of commonly prescribed, approved animal drugs.
The CVM established the hotline, (888) FDA-VETS, in 1996 to receive calls about
adverse experiences to approved animal drugs. We expected many of these reports
to come from practicing veterinarians, but our review indicates that a majority
of the calls in the past few years have come from consumers, particularly dog
owners who find our link on the Internet.
The CVM considers the drug label the first source of important facts for
veterinarians. The label is the result of considerable scientific regulatory
review before CVM approves the drug. It represents known safety and efficacy for
any one drug. The label also gives veterinarians important information about
whether the drug is suitable for the individual or subgroup within a species of
animal.
Additionally, whenever manufacturers distribute a client information sheet, this
means that either the manufacturer or the CVM wishes to convey more facts about
safety or efficacy in lay terms to pet owners.
The staff at CVM monitors and evaluates adverse drug experience reports and
complaints of inefficacy for approved and unapproved, marketed products. For
approved products, this evaluation of post market safety and efficacy
incorporates knowledge gained from the premarket studies as well as from
scrutiny of peer-reviewed studies related to the drug, or the disease that the
drug is intended to cure or prevent.
From the hotline, we have learned that pet owners increasingly rely on Internet
sources for information when their pets have problems. They have told us that,
during their Internet searches, they often find label information and client
information sheets.
Frequent comments from pet owners who contact the CVM hotline include these:
* They did not receive a client information sheet when one was available for a
drug that was prescribed for their pet.
* The medication they received from their veterinarian was not dispensed in the
CVM-approved container but was broken into aliquots that were taken home without
the client information sheet or approved label.
* The veterinarian did not conduct or recommend blood testing before and after
prescribing the drug, even though baseline testing and/or periodic monitoring
was recommended on the label. Common examples include heartworm products and
nonsteroidal, anti-inflammatory drugs.
* After reading client information sheets and labels on the Internet about a
drug prescribed for their pet, they discovered that their pet may have fallen
into a category of animal for which a precaution or contraindication existed.”
These comments represent a complete breakdown and failure of the institution of
veterinary medicine. It also represents an unacceptable failure of federal
government medical safety oversight programs.
Dr. Victoria Hampshire, author of this article, went on to say:
“Given these findings, we have the following reminders for practitioners:
Page 11 of 17
* Drugs that
come with client information sheets are intended to be dispensed in the
manufacturer's container, with the sheets accompanying the prescription.
* Product precautions, contraindications, safety information, and warnings
should help identify animal patients that are not good candidates for the
medication.
* Labels change? if you have a large inventory of a product with a long shelf
life, you may want to contact the manufacturer or CVM to obtain the most recent
label. A long shelf life makes it likely that some of the product won't be
dispensed in the near future. Often, this information is also posted on
pharmaceutical companies' official Web sites.” (12)
Dr. Hampshire’s “reminders” should be pursued as mandates for all veterinary
practitioners.
Additionally, the FDA news Drug Daily Bulletin, Thursday, Jan, 27, 2005, Vol. 2,
No. 19 states:
“Public Confidence in Drug Companies Declining, Poll Shows
The mounting safety concerns swirling around the pharmaceutical industry are
beginning to have a profound effect on the American public’s perception of drug
companies, according to a recent online poll.
Sixty percent of U.S. adults are “not very confident” or “not confident at all”
that drug makers will publicly disclose information about possible side effects
of their products as soon as they have that data, according to a new Harris
Interactive survey, which polled 2,404 U.S. adults between Jan. 4 and Jan. 7.
Only 5 percent of the survey respondents indicated they are “very confident”
that drug makers will publicly disclose side-effect information in a timely
manner.......” -Drug Industry Daily (13)
GENERAL OVERVIEW OF PROPOSED SOLUTIONS:
1. The FDA must hold the drug companies responsible for performing thorough
safety studies and reporting results accurately and thoroughly for all new
veterinary drugs. Omission, manipulation and distortion of data must be
curtailed. Close monitoring of all related activities is necessary.
Compliance failures must be dealt with swiftly and forcefully in “real time”.
“Real time” ADE reporting is a critical and essential component of the
monitoring the efficacy and safety of new veterinary drugs. An overhaul and
upgrade of the ADE reporting system is essential to make the information
contained therein easily accessible to the public.
2. Drug companies MUST provide timely, accurate FDA-approved product literature
and updates to veterinarians. These materials must contain clear statements that
a Client Information Sheet *must* be provided to every client to whom the “new”
drug is dispensed.
How Items 1 and 2 can be accomplished :
A. Strong citizen input to FDA
demanding:
___________________________
12
http://www.avma.org/onlnews/javma/jan04/040115f.asp
13
http://www.fdanews.com/dailies/drugdaily/2_19/news/35001-1.html
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1. Better ADE
reporting in “real time”
2. Swift enforcement of labeling violations
3. Correction of all labeling violations to all media vehicles
4. No direct to consumer advertising or promotion allowed for the first 2 years
of new drug approval
5. Citizen review committees - public involvement in the drug approval process
B. Pet owners who have been affected by this drug should
consult with attorneys regarding:
1. Individual lawsuits
a. “property” claims;
b. claims with respect to failure to obtain client
information sheets and lack of informed consent that can be backed by state
pharmacy regulations to the extent that vets are not exempt from them.
c. “patient” claims by the “guardian” of the pet
d. “sentient property” claims
e. “Deceptive trade practices” claims
f. “Mail fraud” claims
2. Class Action lawsuits
C. Inform and Advise Legislators of these problems
D. National media campaign raising awareness and support for
the above
3. Veterinarians MUST be REQUIRED to provide:
A. A Client Information Sheet (CIS) to every client to whom
the drug is dispensed; and
B. Verbal client education regarding potential side effects,
and what to do if any are observed in their pet.
4. Veterinarians must be held to similar standards as pharmacists for every
medication they dispense to a patient.
How Items 3 and 4 can be accomplished:
A. Influence and Petition American Association of State
Veterinary Boards to call for all State Veterinary Board regulations to mandate
this (leaving veterinarians unsupported in lawsuits for
failure to do so).
B. Make direct appeal to AVMA to call for State Boards to
mandate this.
C. Make direct appeals to/demands for individual State Boards
to mandate this
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D.
National “Educate Your Vet” campaign- “VIS*s (Veterinary Information Sheets)
designed for clients to give to their vets- “Dear Dr.” letter
respectfully, supportively indicating clients can no longer accept less than
full information/disclosure w/ drugs.
E. Mass petitions (includes some of above).
Filing with the State Veterinary Board may well be easier and more effective
than filing Malpractice claims. Challenging a veterinarian on lack of informed
consent and failure to provide Client Information Sheets may prove more
productive. Each pet owner should consider each of these alternatives
individually and in accordance with their respective state laws.
SPECIFIC SOLUTIONS FOR THE FDA REGARDING NSAIDS IN GENERAL
AND DERAMAXX IN PARTICULAR:
1. PACKAGING AND LABELING - ALL NSAIDS - FDA MANDATE THAT NSAIDS BE DISPENSED
IN APPROVED CONTAINERS ONLY FOR THE FIRST 1-2 YEARS AFTER PRODUCT APPROVAL
Given the data heretofore mentioned which indicates: that veterinarians operate
at the pharmacist level when dispensing drugs: that clients rarely, if ever,
receive Client Information Sheets provided by the drug companies to the
veterinarian; that veterinarians often and in usual practice purchase
drugs in bulk and repackage them for client use; and that the FDA has no direct
jurisdiction over vets who are regulated by State Veterinary Boards, it is
recommended that NSAIDS be dispensed in approved and appropriately labeled
containers only.
BLACK BOX WARNINGS - The most critical warnings that should be black
boxed are:
A.) PROVIDE THE CLIENT INFORMATION SHEET - Early treatment of a problem is
critical to successful treatment
B.) Provide a profile of the signs associated with typical severe reaction: low
RBC, high WBC, High BUN and creatinine, elevated liver values with clinical
signs being diarrhea and vomiting, likely with blood and inappetance. This black
box warning could be limited to the typical profile that probably accounts for
95% of all severe reaction cases.
There are certainly other signs that come up, but generally, these are either
not likely to result in a severe reaction, related to some obvious pre-existing
condition (known renal failure, hepatic or cardio impairment as an example), or
are relatively rare, i.e., everything is relatively normal, but signs of
congestive heart failure.
DOSAGE - With any NSAID, the name of the game is finding the LOWEST
POSSIBLE EFFECTIVE DOSE. It should be emphasized that dosing should be at the
low end of the range and the pill given on an “as needed” as opposed to “daily”
basis
2. ADE REPORTING
Besides upgrading ADE reporting to “real time” and swiftly and appropriately
penalizing manufacturers for the failure to comply, the current system of ADE
reporting only encompasses unscored data. Scored data regarding death and
euthanasia associated with adverse reaction is not made available. The FDA and
manufacturers discount the publicly available data, yet the FDA
Page 14 of 17
has the scored data. The
public shouldn't have to file FOIA requests to get it.
3. NO DIRECT TO CONSUMER ADVERTISING OR PROMOTION FOR THE FIRST ONE-TWO YEARS
This is being advocated for the human drugs. It is equally applicable to
veterinary drugs. Pet owners would be better served if manufacturers spend their
advertising dollars on further research into the safety and efficacy of these
drugs and better “real-time” ADE reporting for the first few years.
4. PUBLIC INVOLVEMENT IN THE APPROVAL PROCESS
At present, a drug obtains FDA approval without any opportunity for the public
to comment on the safety and efficacy studies. There is no real mechanism for
the public to comment on this after approval status is obtained. The FDA needs
to change this to allow in the final stages for a public panel to review and
comment on the adequacy of the research done in support of a new drug
application.
5. DERAMAXX - PROBLEMS REQUIRING FURTHER INVESTIGATION (AND SUSPENDED
SHIPMENT UNTIL THE ISSUES ARE RESOLVED)
a.) NSAID HEART problems. There is enough evidence and details of one
well documented case being submitted to the FDA to warrant a requirement that
Novartis investigate adverse cardiac effects of Deramaxx. At present, in a
question and answer format, Novartis is currently stating
that dogs are different than humans and this is not an issue. The fact which
undermines this assertion is that dogs are and have been used extensively in
studying toxicity and other issues in the development of human Cox-2 inhibitors
for humans. Cardio infarcts do not resolve and there is little room for
compensation. Most will tend to get worse over time because they are subject to
constant blood flows.
b.) NEUROLOGICAL effects from long-term use. It is known that Cox-2 is
used constitutively in the brain therefore Cox-2 inhibition has to have an
effect. What is it? Is it permanent? This needs to be studied.
c.) SULFA allergy effects. Deramaxx is a sulfanomide drug. There are
certain breeds (Dobermans, white-coated northern and so on) with known sulfa
allergies. A specific warning on this needs to be studied. At present, the label
says it might be an issue.
d.) VARIABLE METABOLISM effects. The studies in support of Deramaxx found
that there was variable metabolism of the drug. There is an extensive body of
literature on variations in the metabolism of Celebrex, a close chemical cousin
of Deramaxx, in dogs. The product label states
that there was variation, but does not go beyond this to say that it could
result in the death of some dogs. The manufacturers of Deramaxx and other NSAIDS
need to develop a screening procedure that identifies slow metabolizers, the
dogs who are most likely to experience adverse reactions.
Searle, the developer of Deramaxx, studied this issue when they developed the
drug. That information needs to be made public and if it is inadequate to draw
any conclusions, studied further since it is clear that this is the reason for
most of the severest reactions to the drug. Deramaxx is specifically marketed
for osteoarthritis, a condition experienced by older or senior dogs. It is this
same group of senior dogs that are normally, the slower metabolizers.
e.) REVERSIBILITY OF TOXIC EFFECTS - Because documented adverse side
effects of Deramaxx include serious and sometimes fatal organ system damage or
failure, the issue of reversibility is a crucial one in order to substantiate
claims of safety . It needs to be addressed
Page 15 of 17
scientifically and much
more adequately than has been done. If organ system damage is only partially
or slightly reversible, the dog might not die right then, however, it’s life is
still harmed or shortened.
In this same regard, the FDA should consider providing treatment guidelines for
Deramaxx drug toxicity, especially given Novartis claims of ineffective
treatment and drug overdose events.
Regarding the documentation of the extent of damage done by this drug, the FDA
has an up close and personal view day in and day out with benefit of the full
clinical record. The FDA should compel the manufacturer to present a “profile”
when post-market experience indicates there are serious side effects.
1.
http://www.fda.gov/OHRMS/DOCKETS/98fr/03-29744.pdf
2. http://www.fda.gov/cvm/efoi/section2/141-203.pdf
3.
http://www.fda.gov/cvm/index/regulatory/w011603na.pdf
4.
http://www.fda.gov/cvm/efoi/section2/141-203s021103.pdf
5.
http://dil.vetmed.vt.edu./GreenBook/Updates/2003/2003_05.html
6.
http://www.fda.gov/cvm/efoi/section2/141-203s021103.pdf (begins mid-page 8)
7.
http://www.fda.gov/cvm/index/regulatory/w042303n.pdf
8.
http://www.fda.gov/cvm/index/safety/DDLDeramax122203.pdf
9. http://www.kentuckypetgazette.com/novartis.htm
Also,
http://www.fda.gov/foi/warning_letters/g5108d.htm
10.
http://www.fda.gov/medwatch/articles/medcont/postrep.htm#lssrd
11. http://www.fda.gov/cvm/index/ade/ade_cum.htm
12.
http://www.avma.org/onlnews/javma/jan04/040115f.asp
13.
http://www.fdanews.com/dailies/drugdaily/2_19/news/35001-1.html
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