Pirfenidone Plus M-DDO Gel in Moderate and Severe Acne

Summary

Acne vulgaris is a complex skin disorder involving multiple abnormalities of the pilosebaceous unit. Acne is the most common skin disease during puberty and worsens throughout adolescence. However, epidemiological studies suggest that acne can arise at any age, most frequently affecting individuals between puberty and 30 years of age, with 79%-95% of subjects aged between 16 years and 18 years and 80% of subjects between puberty and 30 years of age. Acne is considered the main reason for consultation with the dermatologist in institutional and private clinical practice.

Clinical features include seborrhoea, non-inflammatory lesions, inflammatory lesions and various degrees of scarring. There are many classifications of acne and scarring severity. Moderate to severe acne is about 15-20%.

Facial acne scarring affects both sexes equally and occurs to some degree in up to 95% of cases. There is a significant correlation between the initial acne grade and the overall severity of scarring at all sites and in both sexes. This would suggest that treatment aimed at reducing the severity of acne might reduce the incidence of scarring. Both superficial inflammatory acne lesions as well as deep nodular lesions seem capable of producing scars.

Conventional therapies recommended for the treatment of acne vulgaris include retinoids, benzoyl peroxide (BPO), antibiotics, and hormonal therapy. Combination therapy using agents with complementary mechanisms provides the opportunity to target multiple pathogenetic causes of acne vulgaris.

The combination in gel with 0.1% adapalene and 2.5% BPO is a once-daily treatment of acne vulgaris. In several double- blind, randomized controlled trials (RCTs), the Adapalene-BPO (A-BPO) combination therapy applied once daily for 12 weeks significantly reduced the number of both inflammatory and non-inflammatory lesions in subjects with moderate acne vulgaris. In Mexico there is an available commercial product of this combination (Effezel®; Galderma). The limitation of this topical therapy is the low tolerability by patients as they can experiment several levels of irritation, erythema, dryness, desquamation, burning, and itching), and patients are advised to expect these side effects, which contribute to discontinue therapy if it becomes severe.

On the other hand, 5-methyl-1-phenyl-2-(1h)-pyridone or pirfenidone (PFD) is a wide-spectrum antifibrotic drug that modulates diverse cytokines action, involving TGF-β, TNF-α, epidermal growth factor, platelet-derived growth factor, VEGF, IGF-1, fibroblast growth factor, interferon-γ, interleukin (IL)-1, IL-6, and IL-8 and it has shown promising effects in vitro and in vivo settings. Also, PFD has proven effective in the prevention and regression of pulmonary fibrosis, peritoneal sclerosis, hepatic cirrhosis, uterine fibromyoma, left ventricular fibrosis, renal interstitial fibrosis, and breast capsular contracture in experimental models. A recently open phase II clinical trial evaluated the therapeutic use of PFD gel in localized scleroderma. Results showed it acts on both the inflammatory and the fibrotic phases.

The other component of Zaxcell is modified-diallyl disulfide oxide (M-DDO) an antimicrobial and antiseptic agent, which has been proved in patients with chronic diabetic ulcer as a potent germicide and has show to increase the beneficial effect of PFD preventing infections, accelerating and improving ulcer resolution. (Observations not published).

According to this, the investigators believe that Zaxcell (PFD + M-DDO) could play an important role in the modulation of inflammatory and scarring process in acne. The investigators hypothesis is that PFD in patients with moderate to severe acne modulates amplification of the inflammatory response, regulating the inflammasome activation, macrophage polarization and its activity in regulating the wound healing process of the skin in an early fashion.

Zaxcell is an innovative gel with a synergetic mode of action that could modulate the inflammatory response. Furthermore, has antiseptic properties and regulates the process of wound healing, fibrogenic and scarring process. In vitro and in vivo studies provide an initial body of evidence on the safety and clinical benefits of PFD, the main component of Zaxcell as a promising candidate for the treatment of moderate to severe acne.

Conditions

• Acne Vulgaris Superficial Mixed Comedonal and Inflammatory

Interventions

COMBINATION_PRODUCT

PDF+M-DDO

Participants with moderate and severe acne will be treated two times a day on the face and superior back with a smooth layer (standard finger tip unit 0.5 g for an area of 100 to 120 square centimeters) of Zaxcell (Pirfenidone with M-DDO) in form of a gel. Patients have to wait 20 min without cover those sites.

COMBINATION_PRODUCT

A+PBO

Participants with moderate and severe acne will be treated once a day (at night) on the face and superior back with a smooth layer (standard finger tip unit 0.5 g for an area of 100 to 120 square centimeters) of Effezel (Adapalene with benzoyl peroxide) in form of a gel. Patients have to wait 20 min without cover those sites

Sponsors & Collaborators

• Hospital Civil de Guadalajara

  collaborator OTHER

• Cell Pharma

  collaborator OTHER

• University of Guadalajara

  lead OTHER

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Model

PARALLEL

Eligibility

Min Age

12 Years

Max Age

25 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2017-03-27

Primary Completion

2019-01-31

Completion

2019-03-31

Countries

• Mexico

Study Locations