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  • Title: DFD-01, a Novel Medium Potency Betamethasone Dipropionate 0.05% Emollient Spray, Demonstrates Similar Efficacy to Augmented Betamethasone Dipropionate 0.05% Lotion for the Treatment of Moderate Plaque Psoriasis.
    Author: Fowler JF, Hebert AA, Sugarman J.
    Journal: J Drugs Dermatol; 2016 Feb; 15(2):154-62. PubMed ID: 26885782.
    Abstract:
    BACKGROUND: A novel 0.05% betamethasone dipropionate emollient spray (DFD-01) was formulated to optimize penetration of steroid to the epidermal layers affected by psoriasis. OBJECTIVE: To compare the efficacy and safety of medium potency DFD-01 with super potent augmented betamethasone dipropionate 0.05% lotion (Diprolene) for the topical treatment of moderate plaque psoriasis. METHODS: Adults with moderate plaque psoriasis (Investigator Global Assessment [IGA]=3; 10-20% BSA) were randomized 2:1:1 to DFD-01, Diprolene, or Vehicle. Products were applied twice daily to affected areas for 14 days. Treatment success was defined as IGA=0 or 1 and ≥ 2-grade improvement from baseline. IGA and target lesion Total Sign Score (TSS; sum of erythema, scaling, and plaque elevation scores) were assessed at baseline and at days 4, 8, and 15. Adverse events (AEs) were recorded. RESULTS: 351 subjects with moderate psoriasis were randomized to DFD-01 (n=174), Diprolene (n=90), or Vehicle (n=87). Mean BSA was 13-14%. Treatment success was achieved in 19.0% DFD-01, 18.9% Diprolene, and 2.3% Vehicle (P<0.001 DFD-01 vs Vehicle) at day 15. Treatment success at day 8 was 10% DFD-01, 6.7% Diprolene, and 1.2% Vehicle (P=0.003 DFD-01 vs Vehicle). TSS was significantly reduced with DFD-01 compared with Vehicle at days 4, 8, and 15 (P ≤ 0.006) and compared with Diprolene at day 4 (P=0.010). DFD-01 relieved signs of erythema and scaling earlier than Diprolene or Vehicle, showing significant improvements on day 4 (P ≤ 0.048). All products were well tolerated. Significantly more burning/stinging was reported with Diprolene than DFD-01 (13.6% vs 4.1%, P=0.006). CONCLUSION: Medium potency DFD-01 was efficacious for the treatment of moderate psoriasis. DFD-01 demonstrated similar efficacy to super potent Diprolene lotion. Results at 4 and 8 days indicate that DFD-01 shows early improvement in some subjects. DFD-01 was well tolerated and had an excellent safety profile.
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