Biofrontera discusses approval of Ameluz® in the US with the FDA
Biofrontera AG /
Biofrontera discusses approval of Ameluz® in the US with the FDA
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Leverkusen, 23 July 2012 - Biofrontera AG (DSE: B8F) was involved in a
consultation with the American medication approval authority, the FDA (Food and
Drug Administration), to discuss the approval of Ameluz(®) in the United States.
Ameluz(®) was approved by the European Medicines Agency (EMA) in December 2011
as a first-line therapy for the treatment of mild and moderate actinic keratosis
on the face and scalp(1). Biofrontera has now submitted to the FDA the
documentation that led to approval in Europe and discussed its validity for the
US. Whilst clinical comparison with a representative competitive medicine, which
is compulsory in Europe - in a Phase III study Biofrontera clearly demonstrated
superiority in the overall clearance rate compared with rival product
Metvix(®1,2 )- is not required to gain approval in the US, the FDA places
greater value on other aspects.
As a result, Biofrontera was advised to expand on the existing data to include
the fact that at the maximum dosage the active ingredient 5-aminolevulinic acid
(ALA) is not absorbed into the bloodstream. It was also discussed whether a more
detailed investigation is needed to analyse the potential of Ameluz(®) to cause
skin irritation and contact allergies. No evidence of this has been found in
extensive trials in animals and clinical studies performed to date. In addition,
the fact that ALA is a substance that is produced naturally in every cell of the
body was not considered sufficient, since during therapy ALA is highly
concentrated in the affected area of skin. Although it is unlikely that
Ameluz(®) has allergenic potential, a concern in this regard could be based on
results using preparations containing methyl-ALA, which caused allergies in
about one third of the patients upon repeated exposure(3).
The FDA has not explicitly requested further clinical studies on efficacy.
Whether the patients included in the existing European clinical studies are
sufficient to adequately cover the ethnic origin of the population in the US is
a matter that has been left open. People of Asian origin and descendants of
South American tribes can also develop actinic keratosis, even if this occurs
less frequently than in fair-skinned Caucasians. The FDA is expected to only
answer this conclusively during the approval process.
The FDA has not made any binding statement with regard to the approval of
Biofrontera's PDT lamp, BF-RhodoLED. The American authority may consider
approval of the lamp in combination with Ameluz(®) based solely on data from
cell culture experiments and physical measurements.
'As anticipated not all of our questions were answered conclusively in our
meeting with the FDA, but we have obtained clarification on several important
aspects. Overall, the FDA assessed the presented data package positively. The
proposed studies do not require the great investment in time and expenditure
that were required for the European Phase III studies and can be implemented
quickly. We continue to assume that we will be able to apply for approval in the
USA in 2013,' said Professor Hermann Lübbert, CEO of Biofrontera AG.
Background
Ameluz(®) was approved across Europe in December 2011 as a medication for the
first-line treatment of mild and moderate actinic keratosis on the face and the
scalp. The product is used as a photosensitiser in the still relatively new area
of photodynamic therapy (PDT)(1).
Actinic keratosis is particularly seen in fair-skinned people who have been
exposed to the sun for a long time(4). The condition affects about 10% of the
entire Caucasian population worldwide(5). 5-20% of patients with actinic
keratosis develop malignant and potentially life-threatening squamous cell
carcinomas(6).
About Biofrontera AG
Biofrontera aims at attending and treating the skin, recognizing the aesthetic
needs of a person's visual reflection.
Biofrontera is listed in the regulated market of the Düsseldorf stock exchange
under the symbol B8F and the ISIN DE0006046113.
www.biofrontera.com
References
1.) Ameluz(®) Produktinformation; www.ema.europa.eu
2.) Dirschka T et al., 2012, Br J Dermatol. 166:137-46
3.) Korshøj S et al., 2009, Contact Dermatitis 60:320-324
4.) Salasche SJ, 2000, Am Acad Dermatol. 42, 4-7.
5.) Frost, CA & Green, AC, 1994, Br J Dermatol. 131, 455-464.
Memon, AA, Tomenson, JA, Bothwell, J & Friedmann, PS, 2000, Br J Dermatol.
142, 1154-1159.
6.) Braathan LR, Szeimes RM, Basset-Seguin N et al., 2007, J Am Acad Dermatol.
56, 125-143.
For further information:
Anke zur Mühlen
Director PR/IR
+49 (0)214 876 32 22
+49 (0)214 876 32 90
a.zurmuehlen@biofrontera.com
Biofrontera AG
Hemmelrather Weg 201
51377 Leverkusen
Germany
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Source: Biofrontera AG via Thomson Reuters ONE
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