WARNINGS
Included as part of the PRECAUTIONS section.
PRECAUTIONS
Effects On Endocrine System
Systemic absorption of topical corticosteroids can
produce reversible hypothalamic-pituitary-adrenal (HPA) axis suppression with
the potential for clinical glucocorticosteroid insufficiency. This may occur
during treatment or upon withdrawal of the topical corticosteroid.
The effect of Desonate on HPA axis function was
investigated in pediatric subjects, 6 months to 6 years old, with atopic
dermatitis covering at least 35% of their body, who were treated with Desonate
twice daily for 4 weeks. One of 37 subjects (3%) displayed adrenal suppression
after 4 weeks of use, based on the cosyntropin stimulation test. As follow-up
evaluation of the subject's adrenal axis was not performed, it is unknown
whether the suppression was reversible [see Use In Specific Populations and
CLINICAL PHARMACOLOGY].
Pediatric patients may be more susceptible than adults to
systemic toxicity from equivalent doses of Desonate due to their larger skin
surface-to-body mass ratios [see Use In Specific Populations].
Because of the potential for systemic absorption, use of
topical corticosteroids may require that patients be periodically evaluated for
HPA axis suppression. Factors that predispose a patient using a topical
corticosteroid to HPA axis suppression include the use of more potent steroids,
use over large surface areas, use over prolonged periods, use under occlusion,
use on an altered skin barrier, and use in patients with liver failure.
An ACTH stimulation test may be helpful in evaluating
patients for HPA axis suppression. If HPA axis suppression is documented, an
attempt should be made to gradually withdraw the drug, to reduce the frequency
of application, or to substitute a less potent steroid. Manifestations of
adrenal insufficiency may require supplemental systemic corticosteroids.
Recovery of HPA axis function is generally prompt and complete upon
discontinuation of topical corticosteroids.
Cushing's syndrome, hyperglycemia, and unmasking of
latent diabetes mellitus can also result from systemic absorption of topical
corticosteroids.
Use of more than one corticosteroid-containing product at
the same time may increase the total systemic corticosteroid exposure.
Local Adverse Reactions With Topical Corticosteroids
Local adverse reactions may be more likely to occur with
occlusive use, prolonged use or use of higher potency corticosteroids.
Reactions may include skin atrophy, striae, telangiectasias, burning, itching,
irritation, dryness, folliculitis, acneiform eruptions, hypopigmentation,
perioral dermatitis, allergic contact dermatitis, secondary infection, and
miliaria. Some local adverse reactions may be irreversible.
Concomitant Skin Infections
If concomitant skin infections are present or develop
during treatment, an appropriate antifungal or antibacterial agent should be
used. If a favorable response does not occur promptly, use of Desonate should
be discontinued until the infection is adequately controlled.
Skin Irritation
If irritation develops, Desonate should be discontinued
and appropriate therapy instituted. Allergic contact dermatitis with
corticosteroids is usually diagnosed by observing failure to heal rather than
noting a clinical exacerbation as with most topical products not containing
corticosteroids. Such an observation should be corroborated with appropriate
diagnostic patch testing.
Nonclinical Toxicology
Carcinogenesis, Mutagenesis, Impairment Of Fertility
Systemic long-term animal studies have not been performed
to evaluate the carcinogenic potential of desonide or its effect on fertility.
In a 26-week dermal carcinogenicity study conducted in transgenic (Tg.AC) mice,
once daily application of 0.005% to 0.05% Desonate Gel significantly increased
the incidence of papillomas at the treatment site in males and females compared
to their respective control animals. The clinical relevance of these findings
in animals to humans is not clear.
Desonide revealed no evidence of mutagenic potential
based on the results of an in vitro genotoxicity test (Ames assay) and an in
vivo genotoxicity test (mouse micronucleus assay). Desonide was positive
without S9 activation and was equivocal with S9 activation in an in vitro mammalian
cell mutagenesis assay (L5178YITK+ mouse lymphoma assay). A dose response trend
was not noted in this assay.
Use In Specific Populations
Pregnancy
Teratogenic effects
Pregnancy Category C
There are no adequate and well-controlled studies in
pregnant women. Therefore, Desonate should be used during pregnancy only if the
potential benefit justifies the potential risk to the fetus.
Corticosteroids have been shown to be teratogenic in
laboratory animals when administered systemically at relatively low dosage
levels. Some corticosteroids have been shown to be teratogenic after dermal
application in laboratory animals.
No reproductive studies in animals have been performed
with Desonate. Dermal embryofetal development studies were conducted in rats
and rabbits with a desonide cream, 0.05% formulation. Topical doses of 0.2,
0.6, and 2.0 g cream/kg/day of a desonide cream, 0.05% formulation or 2.0 g/kg
of the cream base were administered topically to pregnant rats (gestational
days 6-15) and pregnant rabbits (gestational days 6-18). Maternal body weight
loss was noted at all dose levels of the desonide cream, 0.05% formulation in
rats and rabbits. Teratogenic effects characteristic of corticosteroids were
noted in both species. The desonide cream, 0.05% formulation was teratogenic in
rats at topical doses of 0.6 and 2.0 g cream/kg/day and in rabbits at a topical
dose of 2.0 g cream/kg/day. No teratogenic effects were noted for the desonide
cream, 0.05% formulation at a topical dose of 0.2 g cream/kg/day in rats and
0.6 g cream/kg/day in rabbits. These doses (0.2 g cream/kg/day and 0.6 g
cream/kg/day) are similar to the maximum recommended human dose based on body
surface area comparisons.
Nursing Mothers
Systemically administered corticosteroids appear in human
milk and could suppress growth, interfere with endogenous corticosteroid
production, or cause other untoward effects. It is not known whether topical
administration of corticosteroids could result in sufficient systemic
absorption to produce detectable quantities in human milk. Because many drugs
are excreted in human milk, caution should be exercised when Desonate is
administered to a nursing woman.
Pediatric Use
Safety and effectiveness of Desonate in pediatric
patients less than 3 months of age have not been evaluated, and therefore its
use in this age group is not recommended.
The effect of Desonate on HPA axis function was
investigated in pediatric subjects, with atopic dermatitis covering at least
35% of their body, who were treated with Desonate twice daily for 4 weeks. One
of 37 subjects (3%) displayed adrenal suppression after 4 weeks of use, based
on the cosyntropin stimulation test [see WARNINGS AND PRECAUTIONS].
In controlled clinical studies in subjects 3 months to 18
years of age, 425 subjects were treated with Desonate and 157 subjects were
treated with vehicle [see ADVERSE REACTIONS and Clinical Studies].
Because of a higher ratio of skin surface area to body
mass, pediatric patients are at a greater risk than adults of HPA axis
suppression when they are treated with topical corticosteroids. They are
therefore also at greater risk of glucocorticosteroid insufficiency after
withdrawal of treatment and of Cushing's syndrome while on treatment.
Adverse effects, including striae, have been reported
with inappropriate use of topical corticosteroids in infants and children. HPA
axis suppression, Cushing's syndrome, linear growth retardation, delayed weight
gain and intracranial hypertension have been reported in children receiving
topical corticosteroids. Manifestations of adrenal suppression in children
include low plasma cortisol levels and absence of response to ACTH stimulation.
Manifestations of intracranial hypertension include bulging fontanelles,
headaches, and bilateral papilledema.
Geriatric Use
Clinical studies of Desonate did not include patients
aged 65 and older to determine if they respond differently than younger
patients. Treatment of this patient population should reflect the greater
frequency of decreased hepatic, renal, or cardiac function, and of concomitant
disease or other drug therapy.