Efficacy of Infliximab treatment in patients with severe Fistulizing Hidradenitis Suppurativa

Should We Scan Hidradenitis Suppurativa Patients? A Systematic Review of Radiologic Findings

OBJECTIVE

To bring awareness and close gaps between dermatologists and radiologists about the contribution of imaging techniques for diagnosis, treatment, and follow-up of hidradenitis suppurativa (HS).

DATA SOURCES

Investigators searched the PubMed database for articles on HS and radiology techniques.

STUDY SELECTION

Databases were searched up to December 2018. The query retrieved 257 publications, of which 103 were unique; of these, 7 were inaccessible. From the remaining 96, 33 were irrelevant (did not discuss HS lesion features). After applying the inclusion criteria, 63 studies were relevant to this study.

DATA EXTRACTION

A standardized form was constructed to extract data from eligible studies by two independent authors.

DATA SYNTHESIS

Imaging techniques are significant and useful tools in HS management. Imaging should be carried out to evaluate disease severity, subclinical features, treatment success, and intraoperative patient assessment. Providers should consider nonconventional radiology techniques, which are underused in clinical management of HS. Further, dermatology and radiology require a shared terminology of disease features to better understand patient status.

CONCLUSIONS

Publications on HS lesion imaging have increased over the years. Imaging techniques have proven useful for determining HS severity and treatment effectiveness, as well as intraoperative patient assessment. These authors strongly recommend the use of these techniques in routine clinical practice for patients with HS.

Quality of Life in Hidradenitis Suppurativa: An Update

Knowledge on hidradenitis suppurativa/acne inversa (HS) is rapidly increasing. HS has a profound impact on patients and their family life. Several factors, such as comorbidities, unemployment and HS severity, make this impact even more severe. The most widely used instrument to measure this impact is the dermatology-specific DLQI. We also identified six HS-specific health-related quality of life (HRQoL) instruments. Of them, HIDRAdisk, HSIA, HiSQOL and HSQoL-24 are better validated but there is still lack of experience of its use. Several treatment methods showed positive effect on patients’ HRQoL. Surgery remains a method with a substantial positive effect on HRQoL. Several studies confirming a positive effect of adalimumab on the HRQoL of patients with HS were published during the last three years. Data on the influence of several other biologics on HRQoL of HS patients are controversial or based on studies with a small number of patients.

The Hidradenitis Suppurativa Quality of Life (HiSQOL) score: development and validation of a measure for clinical trials

BACKGROUND

Hidradenitis suppurativa (HS) is a chronic, inflammatory condition that can have a large negative impact on health-related quality of life (HRQOL). A reliable and validated measure of HS-specific HRQOL in clinical studies is needed.

OBJECTIVES

To develop and validate the Hidradenitis Suppurativa Quality Of Life (HiSQOL©) scale, for clinical trial measurement of HS-specific HRQOL.

METHODS

In stage 1, qualitative concept elicitation interviews were conducted with patients with HS in Denmark (n = 21) and the U.S.A. (n = 21). In stage 2, cognitive debriefing interviews were performed with U.S. (n = 30) and Danish patients with HS (n = 30). In stage 3 an observational study of 222 patients with HS in the U.S.A. was conducted for item reduction, measure validation and assessment of psychometric properties. In stage 4, an observational study of 215 patients with HS in Denmark was conducted to confirm the psychometric structure derived in stage 3. In both studies the Dermatology Life Quality Index, Hospital Anxiety and Depression Scale and numerical rating scale for pain were also included.

RESULTS

In concept elicitation, 99 items were generated, which were reduced to 41 after removing duplicates. In cognitive debriefing, two items were added and one item removed. A 42-item instrument was psychometrically assessed. Based on psychometric analyses and patient input, the instrument was reduced to 17 items that had strong psychometric properties in both the U.S. and Danish samples.

CONCLUSIONS

The HiSQOL is a reliable and valid instrument to measure HS-specific HRQOL in clinical trials.

Biologics for hidradenitis suppurativa: an update

Hidradenitis suppurativa (HS) is a chronic, inflammatory dermatosis characterized by an occurrence of nodules, abscesses, sinus tracks and scarring. Its pathogenesis is multifactorial and still not fully understood, therefore, current systemic therapies still remain a serious challenge. Increased levels of several proinflammatory cytokines have been reported in patients suffering from HS, therefore biologics appear as a new approach to therapy for this condition. Adalimumab is the only one internationally registered agent and should be considered first after the conventional therapies appear insufficient. The efficacy and safety profile of some preparations, like infliximab and etanercept was confirmed so far in randomized trials, but there are some new biologics which are still being evaluated and require more rigorous examination.

Systematic review of immunomodulatory therapies for hidradenitis suppurativa

Background: Greater understanding of the roles of tumor necrosis factor-α, IL-1β, IL-10, and the IL-23/T-helper (Th) 17 and IL-12/Th1 pathways in immune dysregulation in moderate/severe hidradenitis suppurativa (HS) has helped in developing new regimens. We aim to review the use of different immunomodulatory therapies used to manage HS.

Methods: A comprehensive literature search was conducted on the PubMed and Clinicaltrials.gov databases from 1 January 1947 to 31 December 2018. Only clinical trials, case reports, case series and retrospective analyses published in the English language were included.

Results: Our search yielded 107 articles and 35 clinical trials, of which 15 are still ongoing. The tumor necrosis factor-α inhibitors adalimumab and infliximab were the most comprehensively studied agents. Published data from clinical trials support the efficacy of adalimumab, infliximab, anakinra, ustekinumab, bermekimab and apremilast but not etanercept and MEDI8968. Clinical trials for CJM112 have been completed, with results awaiting publication. Trials are underway for secukinumab, IFX-1, INCB054707 and bimekizumab. Biologics used in smaller cohorts include canakinumab, golimumab and rituximab. Most agents are well tolerated and demonstrate a good safety profile, with the most commonly reported adverse event being infections.

Discussion and conclusions: To date, adalimumab is the only biologic which has been approved by the United States Food and Drug Administration for HS. However, other agents also show promise, with further trials underway to evaluate their efficacy, tolerability and safety profiles. Different clinical measurement scores and endpoints used to make direct comparison difficult. Longitudinal surveillance and pooled registry data are paramount to evaluate the long-term safety profile and efficacy of therapy.

Quality of life measurement in hidradenitis suppurativa: position statement of the European Academy of Dermatology and Venereology task forces on Quality of Life and Patient-Oriented Outcomes and Acne, Rosacea and Hidradenitis Suppurativa

This paper is organized jointly by the European Academy of Dermatology and Venereology (EADV) Task Force (TF) on Quality of Life (QoL) and Patient-Oriented Outcomes and the EADV TF on acne, rosacea and hidradenitis suppurativa (ARHS). The purpose of this paper was to present current knowledge about QoL assessment in HS, including data on HS-specific health-related (HR) QoL instruments and HRQoL changes in clinical trials, and to make practical recommendations concerning the assessment of QoL in people with HS. HS results in significant quimp that is higher than in most other chronic skin diseases. HS impact in published studies was assessed predominantly (84% of studies) by the Dermatology Life Quality Index (DLQI). There is a lack of high-quality clinical trials in HS patients where HRQoL instruments have been used as outcome measures. One double-blind randomized placebo-controlled trial on infliximab with low number of participants reported significantly better HRQoL improvement in the treatment group than in the placebo group. Well-designed clinical studies in HS patients to compare different treatment methods, including surgical methods and assessing long-term effects, are needed. Because of lack of sufficient validation, the Task Forces are not at present able to recommend existing HS-specific HRQoL instruments for use in clinical studies. The EADV TFs recommend the dermatology-specific DLQI questionnaire for use in HS patients. The EADV TFs encourage the further development, validation and use of other HS-specific, dermatology-specific and generic instruments but such use should be based on the principles presented in the previous publications of the EADV TF on QoL and Patient-Oriented Outcomes.

Development of a Quality-of-Life Measure for Hidradenitis Suppurativa

BACKGROUND

Hidradenitis suppurativa (HS) is a chronic skin disorder with adverse impacts on both physical and psychosocial well-being. There is presently no validated HS-specific quality-of-life (QoL) measure.

OBJECTIVE

The objective of this study is to develop a QoL instrument for HS (HS-QoL) in accordance with recommended standards.

METHODS

Patient interviews (concept elicitation) and expert input were used to develop the conceptual framework for outcomes perceived important to patients with HS. A HS-QoL-v1 measure was developed, and cognitive interviews with patients were conducted for pilot testing.

RESULTS

Concept elicitation interviews with patients with HS (n = 21) generated 12 themes. Most frequently reported were impacts on daily activities and symptoms due to HS. These themes, along with literature review and input from clinical experts, informed development of the HS-QoL-v1. Nine cognitive interviews were conducted in a pilot test and resulted in the HS-QoL-v2 measure.

CONCLUSION

The HS-QoL-v2 is a preliminary QoL instrument for which further psychometric validation and establishment of clinimetric properties will be undertaken.

Quality of Life of Patients With Pyoderma Gangrenosum and Hidradenitis Suppurativa

Background:

Pyoderma gangrenosum (PG) and hidradenitis suppurativa (HS) are painful and unsightly dermatologic disorders that have the potential to significantly decrease patients’ quality of life (QOL). Due to the difficulties associated with curing these conditions, QOL improvement is imperative.

Objective:

To determine if there are PG and HS disease-specific QOL measures and to assess whether QOL is being systematically studied in clinic populations or clinical trials.

Methods:

A PubMed search was performed to identify QOL studies for patients with PG and HS. Sources from other papers were also utilized.

Results:

QOL is rarely qualitatively or quantitatively assessed in HS and PG studies. We identified no validated disease-specific QOL measures for either PG or HS.

Conclusion:

Development of disease-specific QOL indices, clinical use of QOL measurement tool, and formal QOL evaluation in clinical trials would help to define the impact of PG and HS treatment in patients’ lives.

The off-label treatment of severe hidradenitis suppurativa with TNF-α inhibitors: a systematic review

To provide an overview of the current evidence regarding off-label treatment of hidradenitis suppurativa (HS) with TNF-α inhibitors, a systematic search was performed in MEDLINE, EMBASE and CENTRAL. Any type of original article concerning HS patients treated with infliximab, etanercept and/or adalimumab was included. No language restriction was applied. After full-text screening 65 studies involving 459 patients met the inclusion criteria and were subjected to data extraction. Four randomized controlled trials (RCTs) were available, and the remainders were case series or reports. Only RTCs were subjected to methodological quality assessment. Based on efficacy data extracted from the case reports, a moderate to good response was seen in 82% of the patients treated with infliximab, 76% of the patients treated with adalimumab, and 68% of the patients treated with etanercept. Due to the moderate level of evidence only a weak recommendation can be provided. If conventional treatment options fail, the use of TNF-α inhibitors can be a useful supplement for the treatment of recurrent severe HS. Infliximab should be preferred based on the most encouraging results regarding efficacy and expenses. Also adalimumab seems promising when administered in higher doses. The use of etanercept should be discouraged.

A prospective clinical trial of open-label etanercept for the treatment of hidradenitis suppurativa

BACKGROUND

Medical therapies for hidradenitis suppurativa (HS) are often ineffective. Tumor necrosis factor-alpha inhibitors may be a potential treatment for patients with moderate to severe HS.

OBJECTIVES

We sought to evaluate the safety and efficacy of etanercept for patients with severe HS.

METHODS

We conducted a phase II clinical trial of etanercept (50 mg/wk subcutaneously) in patients with moderate to severe HS. Efficacy was measured using a Physician Global Assessment and several secondary physician- and patient-reported outcome measures. Responders were classified as those achieving at least a 50% reduction on the Physician Global Assessment score at week 12 compared with baseline.

RESULTS

Only 3 of the 15 patients who entered the study were classified as responders (response rate of 20%; 95% confidence interval: 4.3-48.1) based on the intention-to-treat analysis. Dermatology Life Quality Index scores improved slightly from a median of 19 to 15 (P = .02). Comparison of baseline with week-12 Physician Global Assessment scores, and secondary outcome measures of lesion counts and patient pain scores, failed to show statistically significant improvement. Etanercept was generally well tolerated; however, two patients discontinued the study as a result of skin infections at the site of hidradenitis lesions requiring oral antibiotics.

LIMITATIONS

Lack of a control group and a small number of participants are limitations.

CONCLUSIONS

Our study demonstrated minimal evidence of clinically significant efficacy of etanercept (50 mg/wk subcutaneously) in the treatment of hidradenitis. Future studies using higher doses of etanercept are indicated; however, patients need to be carefully monitored for infection and other adverse events. Randomized, controlled trials will be necessary to demonstrate the risk-to-benefit ratio of tumor necrosis factor-alpha inhibitors in the treatment of hidradenitis.