General: Systemic absorption of topical corticosteroids can produce
reversible hypothalamic- pituitary-adrenal (HPA) axis suppression with the potential
for glucocorticosteroid insufficiency after withdrawal of treatment. Manifestations
of Cushing's syndrome, hyperglycemia, and glucosuria can also be produced in
some patients by systemic absorption of topical corticosteroids while on treatment.
Patients applying a topical steroid to a large surface area or to areas under occlusion should be evaluated periodically for evidence of HPA axis suppression. This may be done by using the ACTH stimulation, A.M. plasma cortisol, and urinary free cortisol tests.
In a study evaluating the effects of mometasone furoate cream on the hypothalamic- pituitary-adrenal (HPA) axis, 15 grams were applied twice daily for 7 days to 6 adult patients with psoriasis or atopic dermatitis. The cream was applied without occlusion to at least 30% of the body surface. The results show that the drug caused a slight lowering of adrenal corticosteroid secretion.
If HPA axis suppression is noted, an attempt should be made to withdraw the drug, to reduce the frequency of application, or to substitute a less potent corticosteroid. Recovery of HPA axis function is generally prompt upon discontinuation of topical corticosteroids. Infrequently, signs and symptoms of glucocorticosteroid insufficiency may occur requiring supplemental systemic corticosteroids. For information on systemic supplementation, see Prescribing Information for those products.
Pediatric patients may be more susceptible to systemic toxicity from equivalent
doses due to their larger skin surface to body mass ratios (see PRECAUTIONS
- Pediatric Use Section).
If irritation develops, ELOCON Cream should be discontinued and appropriate therapy instituted. Allergic contact dermatitis with corticosteroids is usually diagnosed by observing a 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.
If concomitant skin infections are present or develop, an appropriate antifungal or antibacterial agent should be used. If a favorable response does not occur promptly, use of ELOCON Cream should be discontinued until the infection has been adequately controlled.
Laboratory Tests: The following tests may be helpful in evaluating patients
for HPA axis suppression:
ACTH stimulation test
A.M. plasma cortisol test
Urinary free cortisol test
Carcinogenesis, Mutagenesis, Impairment of Fertility: Long-term animal
studies have not been performed to evaluate the carcinogenic potential of ELOCON
(mometasone furoate cream) Cream, 0.1%. Long-term carcinogenicity studies of
mometasone furoate were conducted by the inhalation route in rats and mice.
In a 2-year carcinogenicity study in Sprague-Dawley rats, mometasone furoate
demonstrated no statistically significant increase of tumors at inhalation doses
up to 67 mcg/kg (approximately 0.04 times the estimated maximum clinical topical
dose from ELOCON Cream on a mcg/m2 basis). In a 19-month carcinogenicity
study in Swiss CD-1 mice, mometasone furoate demonstrated no statistically significant
increase in the incidence of tumors at inhalation doses up to 160 mcg/kg (approximately
0.05 times the estimated maximum clinical topical dose from ELOCON Cream on
a mcg/m2 basis).
Mometasone furoate increased chromosomal aberrations in an in vitro
Chinese hamster ovary cell assay, but did not increase chromosomal aberrations
in an in vitro Chinese hamster lung cell assay. Mometasone furoate was
not mutagenic in the Ames test or mouse lymphoma assay, and was not clastogenic
in an in vivo mouse micronucleus assay, a rat bone marrow chromosomal
aberration assay, or a mouse male germ-cell chromosomal aberration assay. Mometasone
furoate also did not induce unscheduled DNA synthesisin vivo in rat
hepatocytes.
In reproductive studies in rats, impairment of fertility was not produced in
male or female rats by subcutaneous doses up to 15 mcg/kg (approximately 0.01
times the estimated maximum clinical topical dose from ELOCON Cream on a mcg/m2
basis).
Pregnancy
Teratogenic Effects: Pregnancy Category C: 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.
When administered to pregnant rats, rabbits, and mice, mometasone furoate increased fetal malformations. The doses that produced malformations also decreased fetal growth, as measured by lower fetal weights and/or delayed ossification. Mometasone furoate also caused dystocia and related complications when administered to rats during the end of pregnancy.
In mice, mometasone furoate caused cleft palate at subcutaneous doses of 60
mcg/kg and above. Fetal survival was reduced at 180 mcg/kg. No toxicity was
observed at 20 mcg/kg. (Doses of 20, 60 and 180 mcg/kg in the mouse are approximately
0.01, 0.02 and 0.05 times the estimated maximum clinical topical dose from ELOCON
Cream on a mcg/m2 basis).
In rats, mometasone furoate produced umbilical hernias at topical doses of
600 mcg/kg and above. A dose of 300 mcg/kg produced delays in ossification,
but no malformations. (Doses of 300 and 600 mcg/kg in the rat are approximately
0.2 and 0.4 times the estimated maximum clinical topical dose from ELOCON Cream
on a mcg/m2 basis).
In rabbits, mometasone furoate caused multiple malformations (e.g., flexed
front paws, gallbladder agenesis, umbilical hernia, hydrocephaly) at topical
doses of 150 mcg/kg and above (approximately 0.2 times the estimated maximum
clinical topical dose from ELOCON Cream on a mcg/m2 basis). In an
oral study, mometasone furoate increased resorptions and caused cleft palate
and/or head malformations (hydrocephaly and domed head) at 700 mcg/kg. At 2800
mcg/kg most litters were aborted or resorbed. No toxicity was observed at 140
mcg/kg. (Doses of 140, 700 and 2800 mcg/kg in the rabbit are approximately 0.2,
0.9 and 3.6 times the estimated maximum clinical topical dose from ELOCON Cream
on a mcg/m2 basis).
When rats received subcutaneous doses of mometasone furoate throughout pregnancy
or during the later stages of pregnancy, 15 mcg/kg caused prolonged and difficult labor and reduced the number of live births, birth weight and early pup survival.
Similar effects were not observed at 7.5 mcg/kg. (Doses of 7.5 and 15 mcg/kg
in the rat are approximately 0.005 and 0.01 times the estimated maximum clinical
topical dose from ELOCON Cream on a mcg/m2 basis).
There are no adequate and well-controlled studies of teratogenic effects from topically applied corticosteroids in pregnant women. Therefore, topical corticosteroids should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
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 ELOCON Cream is administered
to a nursing woman.
Pediatric Use: ELOCON Cream may be used with caution in pediatric patients
2 years of age or older, although the safety and efficacy of drug use for longer
than 3 weeks have not been established. Use of ELOCON Cream is supported by
results from adequate and well-controlled studies in pediatric patients with
corticosteroid-responsive dermatoses. Since safety and efficacy of ELOCON Cream
have not been adequately established in pediatric patients below 2 years of
age, its use in this age group is not recommended.
ELOCON Cream caused HPA axis suppression in approximately 16% of pediatric
patients ages 6 to 23 months, who showed normal adrenal function by Cortrosyn
test before starting treatment, and were treated for approximately 3 weeks over
a mean body surface area of 41% (range 15% to 94%). The criteria for suppression
were: basal cortisol level of ≤ 5 mcg/dL, 30-minute post-stimulation level
of ≤ 18 mcg/dL, or an increase of <7 mcg/dL. Follow-up testing 2 to 4
weeks after study completion, available for 5 of the patients, demonstrated
suppressed HPA axis function in one patient, using these same criteria. Long-term
use of topical corticosteroids has not been studied in this population (see
CLINICAL PHARMACOLOGY - Pharmacokinetics Section).
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 and Cushing's syndrome when they are treated with topical corticosteroids. They are, therefore, also at greater risk of adrenal insufficiency during and/or after withdrawal of treatment. Pediatric patients may be more susceptible than adults to skin atrophy, including striae, when they are treated with topical corticosteroids. Pediatric patients applying topical corticosteroids to greater than 20% of body surface are at higher risk of HPA axis suppression.
HPA axis suppression, Cushing's syndrome, linear growth retardation, delayed weight gain, and intracranial hypertension have been reported in pediatric patients receiving topical corticosteroids. Manifestations of adrenal suppression in children include low plasma cortisol levels, and an absence of response to ACTH stimulation. Manifestations of intracranial hypertension include bulging fontanelles, headaches, and bilateral papilledema.
ELOCON (mometasone furoate cream) Cream, 0.1%, should not be used in the treatment of diaper dermatitis.
Geriatric Use: Clinical studies of ELOCON Cream included 190 subjects
who were 65 years of age and over and 39 subjects who were 75 years of age and
over. No overall differences in safety or effectiveness were observed between
these subjects and younger subjects, and other reported clinical experience
has not identified differences in responses between the elderly and younger
patients. However, greater sensitivity of some older individuals cannot be ruled
out.
Last updated on RxList: 4/15/2008