A Phase 3, Randomized Trial Demonstrating the Improved Efficacy and Patient Acceptability of Fixed Dose Calcipotriene and Betamethasone Dipropionate Cream

Topical Treatment for the Management of Mild-to-Moderate Psoriasis: A Critical Appraisal of the Current Literature

Several comprehensive and updated guidelines are available on the management of psoriasis with systemic treatments. However, there is a lack of updates in recommendations and guidelines on topical treatments, particularly regarding the latest evidence and developments in treatment formulations. Consequently, a comprehensive literature review on this topic, considering the continuous evolution of knowledge and evaluation of the relevance of the available literature evidence, represents a current need to improve the topical management of psoriasis. This study critically appraises the available literature on all topical treatments of psoriasis from the past 20 years to address some relevant issues, such as the vehicle associated with the highest effectiveness, the best vehicle for improving patient adherence, and the best strategy in terms of efficacy and safety for long-term treatment. The greater effectiveness of the foam formulation was demonstrated for calcipotriene/betamethasone dipropionate (Cal/BD) administration compared with the gel and ointment. Without a direct comparison, matching-adjusted indirect comparison analyses support the superiority of the foam versus the cream overall. In addition, the reduced treatment period required by the Cal/BD foam (4 weeks) may favor this formulation over cream (8 weeks). The literature evidence, supported by a broad clinical experience, reported high rates of acceptability and adherence for the foam vehicle. A growing consensus is shared among dermatologists sustaining the proactive approach as the best option for the long-term topical treatment of psoriasis in adults. The Cal/BD foam is the only treatment for which the approved label allows biweekly maintenance use (proactive management), thus representing the first option for long-term topical treatment.

New synthetic pharmacotherapeutic approaches to the treatment of moderate-to-severe plaque psoriasis in adults

INTRODUCTION

Psoriasis is a chronic inflammatory and immune-mediated condition affecting 3.2% of the United States population. There are many options for psoriasis treatment including topicals, oral systemic agents, and biologics. A greater understanding of the pathophysiology of psoriasis has led to an increase in the therapeutic options for treatment.

AREAS COVERED

In this review, we outline the novel synthetic agents for moderate-to-severe plaque psoriasis and discuss a strategy for implementing these agents in clinical practice. A literature search was performed using PubMed to identify articles relevant to the topic published before October 2022.

EXPERT OPINION

Topicals are first-line for treatment of moderate-to-severe plaque psoriasis, most commonly including topical steroids, vitamin D analogs, and topical calcineurin inhibitors. While new topical agents have favorable properties, they are not always effective and adherence to topical agents is poor. Biologics are safe and effective, but patients often prefer oral therapy as opposed to injectable medications. Additionally, anti-drug antibodies can reduce effectiveness of biologics over time. Oral medications are preferred, but we now have a high bar for efficacy and safety. Cost is also a barrier for many patients. Recent development of new synthetic treatment options is promising, and we recommend that providers consider these agents as they develop holistic and individualized treatment plans for their patients.

Polyaphron Dispersion Technology, A Novel Topical Formulation and Delivery System Combining Drug Penetration, Local Tolerability and Convenience of Application

Topical formulation and delivery technologies for pharmaceutical application should simultaneously address efficacy, safety and convenience of therapy. This has historically proven to be challenging, since formulation features that drive efficacy often have undesirable consequences for safety and convenience and vice versa. Polyaphron dispersion (PAD) technology is a novel topical formulation and drug delivery system developed with the purpose of preserving these key attributes. PAD formulations are typically oil-in-water dispersions consisting of oil droplets encapsulated in a multi-molecular shell structure. This shell structure protects potentially unstable active molecules solubilized in the oil from hydrolytic degradation. Example data are presented of enhanced drug penetration from PAD formulations, including dermal delivery of calcipotriene, betamethasone dipropionate and tacrolimus as well as ocular delivery of ciclosporin A. Local tolerability is an important safety parameter for topical formulations, where high levels of surfactants can cause skin irritation. In this regard, a key benefit of PAD formulations is the inherent reduced requirement for surfactants to generate stable formulations compared to conventional emulsion systems. Patients with chronic diseases with topical manifestations such as psoriasis or atopic dermatitis have been reported to miss up to 70% of planned topical applications, mainly due to a lack of satisfaction with their therapy. Patients generally prefer light, moisturizing, non-greasy and quickly absorbed vehicles that are simple to use on all body parts. PAD formulations can generally be designed to meet these criteria. In conclusion, PAD technology provides high flexibility in topical drug design and can be applied to several body locations without compromising efficacy, safety or convenience of therapy.

Clinical Trial Register: Clinicaltrials.gov: NCT03802344.

The Brain-Skin Axis in Psoriasis-Psychological, Psychiatric, Hormonal, and Dermatological Aspects

Psoriasis is a chronic inflammatory skin disease with systemic manifestation, in which psychological factors play an important role. The etiology of psoriasis is complex and multifactorial, including genetic background and environmental factors such as emotional or physical stress. Psychological stress may also play a role in exacerbation of psoriasis, by dysregulation of the hypothalamic–pituitary–adrenal (HPA) axis, sympathetic–adrenal–medullary axis, peripheral nervous system, and immune system. Skin cells also express various neuropeptides and hormones in response to stress, including the fully functional analog of the HPA axis. The deterioration of psoriatic lesions is accompanied by increased production of inflammatory mediators, which could contribute to the imbalance of neurotransmitters and the development of symptoms of depression and anxiety. Therefore, deregulation of the crosstalk between endocrine, paracrine, and autocrine stress signaling pathways contributes to clinical manifestations of psoriasis, which requires multidisciplinary approaches.