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Park S, Bell A, Gibson R, Masson R, Daveluy S, Goldberg S, Hsiao J, Porter M, Kirby J, Piguet V. Advances in Hidradenitis Suppurativa Pathogenesis and Therapies from the Symposium on HS Advances 2023. J Invest Dermatol 2024; 144:1681-1684. [PMID: 39034061 DOI: 10.1016/j.jid.2024.02.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 02/07/2024] [Accepted: 02/10/2024] [Indexed: 07/23/2024]
Affiliation(s)
- Sarah Park
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Alexis Bell
- Mary Washington Healthcare, Fredericksburg, Virginia, USA
| | - Ruby Gibson
- Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Rahul Masson
- Keck School of Medicine of USC, University of Southern California, Los Angeles, California, USA
| | - Steven Daveluy
- Department of Dermatology, Wayne State University, Detroit, Michigan, USA
| | - Stephanie Goldberg
- General Surgery and Trauma, Mary Washington Medical Center, Fredericksburg, Virginia, USA
| | - Jennifer Hsiao
- Department of Dermatology, University of Southern California, Los Angeles, California, USA
| | - Martina Porter
- Harvard Medical School, Department of Dermatology, Boston, Massachusetts, USA
| | - Joslyn Kirby
- Department of Dermatology, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Vincent Piguet
- Division of Dermatology, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada; Division of Dermatology, Department of Medicine, Women's College Hospital, Toronto, Canada.
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Maronese CA, Piguet V, Marzano AV. IRAK4: A Novel Target in the Therapeutic Landscape of Hidradenitis Suppurativa? J Invest Dermatol 2024:S0022-202X(24)01821-9. [PMID: 39023474 DOI: 10.1016/j.jid.2024.06.1271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Accepted: 06/08/2024] [Indexed: 07/20/2024]
Affiliation(s)
- Carlo A Maronese
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Vincent Piguet
- Division of Dermatology, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada; Division of Dermatology, Department of Medicine, Women's College Hospital, Toronto, Canada
| | - Angelo V Marzano
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy.
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Radhakrishna U, Ratnamala U, Jhala DD, Uppala LV, Vedangi A, Saiyed N, Patel M, Shah SR, Rawal RM, Jemec GBE, Mazza T, Mazzoccoli G, Damiani G. Deregulated Long Non-Coding RNAs (lncRNA) as Promising Biomarkers in Hidradenitis Suppurativa. J Clin Med 2024; 13:3016. [PMID: 38792557 PMCID: PMC11121919 DOI: 10.3390/jcm13103016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/14/2024] [Accepted: 04/15/2024] [Indexed: 05/26/2024] Open
Abstract
Background/Objectives: In recent times, epigenetics alterations in Hidradenitis suppurativa (HS) have been explored and exploited translationally to guide investigation of new therapeutic approaches. On the other hand, long noncoding RNAs (LncRNAs), main regulators of the epigenetic status of the human genome, have been scarcely investigated, notwithstanding their potential relevance in broad pathogenesis comprehension. Here, we aim to explore the methylation pattern of lncRNAs in HS. Methods: In this case-control study, 24 HS patients and age-, sex- and BMI-matched controls were analyzed to characterize the methylome of lncRNA genes in peripheral blood cells. Gene ontology analysis (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, protein-protein interaction (PPI) network, and MCODE analysis were performed. Results: A set of fifteen lncRNA genes exhibited significantly differential methylation patterns, with ten of them showing hypomethylation and five displaying hypermethylation at specific CpG sites. The hypomethylated lncRNA genes were DLEU2, MESTIT1, CASC2, TUG1, KCNQ1DN, PSORS1C3, PCA3, DSCR8, RFPL1S, and PVT1, while the hypermethylated ones were HAR1A, FAM66B, SNHG9, HCG9, and HCP5. These lncRNA genes have been linked to various important biological processes, including cell proliferation, apoptosis, inflammation, chronic inflammatory skin diseases, and wound healing. Their altered methylation status suggests potential roles in regulating these processes, and may contribute to HS pathogenesis and healing mechanisms. Conclusions: This study revealed an interesting dysregulation pattern of definite lncRNAs in the methylome which is linked to both the development of HS and its comorbidities. Epigenetically altered lncRNAs genes could represent useful biomarkers, and could help in guiding innovative treatment strategies.
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Affiliation(s)
- Uppala Radhakrishna
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Uppala Ratnamala
- Department of Life Sciences, School of Sciences, Gujarat University, Ahmedabad 380009, India (R.M.R.)
| | - Devendrasinh D. Jhala
- Department of Zoology, School of Sciences, Gujarat University, Ahmedabad 380009, India
| | - Lavanya V. Uppala
- Peter Kiewit Institute, College of Information Science & Technology, The University of Nebraska at Omaha, Omaha, NE 68182, USA
| | - Aaren Vedangi
- Department of Clinical Research, KIMS ICON Hospital, ICON Krishi Institute Medical Sciences, Sheelanagar, Visakhapatnam 530012, India
| | - Nazia Saiyed
- Department of Obstetrics and Gynecology, Corewell Health William Beaumont University Hospital, Royal Oak, MI 48073, USA
| | | | - Sushma R. Shah
- Department of Obstetrics and Gynecology, BJ Medical College Institute of Medical Post-Graduate Studies and Research, Ahmedabad 380016, India
| | - Rakesh M. Rawal
- Department of Life Sciences, School of Sciences, Gujarat University, Ahmedabad 380009, India (R.M.R.)
| | - Gregor B. E. Jemec
- Department of Dermatology, Zealand University Hospital, 4000 Roskilde, Denmark;
| | - Tommaso Mazza
- Bioinformatics Unit, IRCCS “Casa Sollievo della Sofferenza”, Opera di Padre Pio da Pietrelcina, Cappuccini Avenue, 71013 San Giovanni Rotondo, Italy
| | - Gianluigi Mazzoccoli
- Division of Internal Medicine and Chronobiology Laboratory, Department of Medical Sciences, IRCCS “Casa Sollievo della Sofferenza”, Opera di Padre Pio da Pietrelcina, 71013 San Giovanni Rotondo, Italy
| | - Giovanni Damiani
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy
- Italian Center of Precision Medicine and Chronic Inflammation, University of Milan, 20122 Milan, Italy
- Fondazione IRCCS Ca’ Granda, Ospedale maggiore Policlinico, 20122 Milan, Italy
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Maronese CA, Moltrasio C, Genovese G, Marzano AV. Biologics for Hidradenitis suppurativa: evolution of the treatment paradigm. Expert Rev Clin Immunol 2024; 20:525-545. [PMID: 38130204 DOI: 10.1080/1744666x.2023.2298356] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/19/2023] [Indexed: 12/23/2023]
Abstract
INTRODUCTION Hidradenitis suppurativa (HS) is an autoinflammatory skin disease with a high unmet need for effective medical management. Clinically, it is characterized by inflammatory nodules that may progress into abscesses, draining tunnels and extensive scarring, mainly affecting apocrine gland-bearing areas. AREAS COVERED Treatment options include topical and systemic medications and a variety of surgical procedures. The anti-TNF-α antibody adalimumab and the anti-IL-17 secukinumab are the only two approved biologics for HS, showing moderate efficacy. HS research is a rapidly growing field, with a wide range of agents leveraging distinct mechanisms of action currently under development. Drugs targeting the IL-17 and Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathways are the most advanced in both ongoing and completed Phase 3 studies, promising deeper levels of response. Use of other, off-label biologics is also discussed. EXPERT OPINION A therapeutic algorithm is proposed based on comorbidities and existing evidence. Patient-tailored combinations between biologics and other biologics or small molecules will hopefully allow clinicians to target most events in HS pathophysiology in a complementary way while obtaining a meaningful effect on their devastating manifestations.
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Affiliation(s)
- Carlo Alberto Maronese
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Chiara Moltrasio
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Giovanni Genovese
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Angelo Valerio Marzano
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
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5
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Flora A, Jepsen R, Pham J, Frew JW. Alterations to the Hidradenitis Suppurativa Serum Proteome with Spleen Tyrosine Kinase Antagonism: Proteomic Results from a Phase 2 Clinical Trial. J Invest Dermatol 2024; 144:786-793.e1. [PMID: 37879397 DOI: 10.1016/j.jid.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/24/2023] [Accepted: 10/10/2023] [Indexed: 10/27/2023]
Abstract
Hidradenitis suppurativa is a disease in great need of novel therapies. Given the heterogeneous nature of the disease and the variable response to therapies, biomarkers are essential to predict response to therapies and increase our understanding of disease pathogenesis. Our recent phase 2 clinical trial of spleen tyrosine kinase antagonism using fostamatinib in hidradenitis suppurativa demonstrated a 75% clinical response, with the greatest benefit in individuals with elevated serum inflammation and IgG. In this study, we present results of an in-depth serum proteomic analysis in this patient cohort identifying downregulation of IL-12B as well as B-cell-associated proteins CCL19 and CCL20 and IFN-γ-mediated proteins CXCL10 and CX3CL1. Clinical responders demonstrated greater reduction in serum IL-17A, IL-6, IL-8, and CX3CL1 compared with clinical nonresponders. Baseline levels of CCL28 were associated with clinical response to fostamatinib therapy at week 12. Overall, this suggests that fostamatinib, by targeting B-cell receptor and Fc receptor activity in B cells, monocytes, and macrophages, has a significant molecular impact on the inflammatory serum proteome of hidradenitis suppurativa. In addition, potential therapeutic biomarkers may aid in patient selection for targeted therapy.
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Affiliation(s)
- Akshay Flora
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Liverpool, Australia; Department of Dermatology, Liverpool Hospital, Liverpool, Australia; School of Clinical Medicine, University of New South Wales Sidney, Kensington, Australia
| | - Rebecca Jepsen
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Liverpool, Australia; Department of Dermatology, Liverpool Hospital, Liverpool, Australia
| | - James Pham
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Liverpool, Australia; Department of Dermatology, Liverpool Hospital, Liverpool, Australia; School of Clinical Medicine, University of New South Wales Sidney, Kensington, Australia
| | - John W Frew
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Liverpool, Australia; Department of Dermatology, Liverpool Hospital, Liverpool, Australia; School of Clinical Medicine, University of New South Wales Sidney, Kensington, Australia.
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Flora A, Jepsen R, Pham J, Frew JW. Rapid Attenuation of B-Cell and IFN-γ-Associated Chemokines in Clinical Responders to Jak Inhibition with Upadacitinib in Hidradenitis Suppurativa. J Invest Dermatol 2024; 144:416-419.e5. [PMID: 37633455 DOI: 10.1016/j.jid.2023.07.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/20/2023] [Accepted: 07/25/2023] [Indexed: 08/28/2023]
Affiliation(s)
- Akshay Flora
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Liverpool, Australia; Department of Dermatology, Liverpool Hospital, Liverpool, Australia; University of New South Wales, Kensington, Australia
| | - Rebecca Jepsen
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Liverpool, Australia; Department of Dermatology, Liverpool Hospital, Liverpool, Australia
| | - James Pham
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Liverpool, Australia; Department of Dermatology, Liverpool Hospital, Liverpool, Australia; University of New South Wales, Kensington, Australia
| | - John W Frew
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Liverpool, Australia; Department of Dermatology, Liverpool Hospital, Liverpool, Australia; University of New South Wales, Kensington, Australia.
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Flora A, Jepsen R, Kozera EK, Woods JA, Cains GD, Radzieta M, Jensen SO, Malone M, Frew JW. Mast cells are upregulated in hidradenitis suppurativa tissue, associated with epithelialized tunnels and normalized by spleen tyrosine kinase antagonism. Exp Dermatol 2024; 33:e14894. [PMID: 37522746 DOI: 10.1111/exd.14894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/26/2023] [Accepted: 07/16/2023] [Indexed: 08/01/2023]
Abstract
Mast cells have traditionally been associated with allergic inflammatory responses; however, they play important roles in cutaneous innate immunity and wound healing. The Hidradenitis Suppurativa tissue transcriptome is associated with alterations in innate immunity and wound healing-associated pathways; however, the role of mast cells in the disease is unexplored. We demonstrate that mast cell-associated gene expression (using whole tissue RNAseq) is upregulated, and in-silico cellular deconvolution identifies activated mast cells upregulated and resting mast cells downregulated in lesional tissue. Tryptase/Chymase positive mast cells (identified using IHC) localize adjacent to epithelialized tunnels, fibrotic regions of the dermis and at perivascular sites associated with Neutrophil Extracellular Trap formation and TNF-alpha production. Treatment with Spleen Tyrosine Kinase antagonist (Fostamatinib) reduces the expression of mast cell-associated gene transcripts, associated biochemical pathways and the number of tryptase/chymase positive mast cells in lesional hidradenitis suppurativa tissue. This data indicates that although mast cells are not the most abundant cell type in Hidradenitis Suppurativa tissue, the dysregulation of mast cells is paralleled with B cell/plasma cell inflammation, inflammatory epithelialized tunnels and epithelial budding. This provides an explanation as to the mixed inflammatory activation signature seen in HS, the correlation with dysregulated wound healing and potential pathways involved in the development of epithelialized tunnels.
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Affiliation(s)
- A Flora
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, New South Wales, Australia
- University of New South Wales, Sydney, New South Wales, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - R Jepsen
- Holdsworth House Medical Practice, Sydney, New South Wales, Australia
| | - E K Kozera
- University of New South Wales, Sydney, New South Wales, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - J A Woods
- University of New South Wales, Sydney, New South Wales, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - G D Cains
- University of New South Wales, Sydney, New South Wales, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - M Radzieta
- South West Sydney Limb Preservation and Wound Research, Ingham Institute for Applied Medical Research, Sydney, New South Wales, Australia
- School of Medicine, Western Sydney University, Sydney, New South Wales, Australia
| | - S O Jensen
- School of Medicine, Western Sydney University, Sydney, New South Wales, Australia
| | - M Malone
- South West Sydney Limb Preservation and Wound Research, Ingham Institute for Applied Medical Research, Sydney, New South Wales, Australia
- School of Medicine, Western Sydney University, Sydney, New South Wales, Australia
| | - J W Frew
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, New South Wales, Australia
- University of New South Wales, Sydney, New South Wales, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, New South Wales, Australia
- Holdsworth House Medical Practice, Sydney, New South Wales, Australia
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8
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Frew JW, Piguet V. Attenuated PBMC Cytokine Production in Hidradenitis Suppurativa May Be Indicative of Cellular Exhaustion, Providing Novel Biomarkers, and Future Therapeutic Potential. J Invest Dermatol 2023; 143:2334-2337. [PMID: 37315880 DOI: 10.1016/j.jid.2023.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 06/16/2023]
Affiliation(s)
- John W Frew
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, Australia; Department of Dermatology, Liverpool Hospital, Sydney, Australia; University of New South Wales, Sydney, Australia
| | - Vincent Piguet
- Division of Dermatology, Department of Medicine, University of Toronto, Ontario, Toronto, Canada; Division of Dermatology, Department of Medicine, Women's College Hospital, Ontario, Toronto, Canada.
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Vagnozzi E, Bruni M, Esposito M, Fargnoli MC. Brodalumab for severe hidradenitis suppurativa: a case of clinico-radiologic improvement and literature review. J DERMATOL TREAT 2023; 34:2270091. [PMID: 37842732 DOI: 10.1080/09546634.2023.2270091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 10/05/2023] [Indexed: 10/17/2023]
Abstract
Hidradenitis suppurativa (HS) is a chronic autoinflammatory follicular disease, affecting body areas that are rich in apocrine glands. Moderate-to-severe HS may severely impair patients' quality of life also because the available therapies are often unsatisfactory. Several lines of evidence suggest that inflammatory cytokines such as tumor necrosis factor-α (TNF-α) and interleukin (IL)-17 play a pivotal role in the physiopathology of HS. TNF-α inhibitors have long been used with benefit in moderate-severe forms of HS. However, several monoclonal antibodies against IL-17 isoforms are currently being investigated for HS. We report the case of a 50-year-old man with long-standing HS and concomitant palmo-plantar psoriasis treated with brodalumab after failure of various TNF-α inhibitors. The HS lesions and the patient's quality of life improved steadily over time until week-136. Interestingly, the clinical benefit was confirmed by radiological improvement with MRI evaluation. Our case report demonstrates the long-term efficacy and safety of brodalumab in HS encouraging the use of drugs to inhibit the T helper-type 17 immune axis, especially in cases of HS refractory to therapy with TNF-α inhibitors.
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Affiliation(s)
- Emanuele Vagnozzi
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Manfredo Bruni
- Dermatology Unit, San Salvatore Hospital, L'Aquila, Italy
| | - Maria Esposito
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
- Dermatology Unit, San Salvatore Hospital, L'Aquila, Italy
| | - Maria Concetta Fargnoli
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
- Dermatology Unit, San Salvatore Hospital, L'Aquila, Italy
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Mukhtar MS, Mishra B, Athar M. Integrative systems biology framework discovers common gene regulatory signatures in multiple mechanistically distinct inflammatory skin diseases. RESEARCH SQUARE 2023:rs.3.rs-3611240. [PMID: 38014119 PMCID: PMC10680929 DOI: 10.21203/rs.3.rs-3611240/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
More than 20% of the population across the world is affected by non-communicable inflammatory skin diseases including psoriasis, atopic dermatitis, hidradenitis suppurativa, rosacea, etc. Many of these chronic diseases are painful and debilitating with limited effective therapeutic interventions. However, recent advances in psoriasis treatment have improved the effectiveness and provide better management of the disease. This study aims to identify common regulatory pathways and master regulators that regulate molecular pathogenesis. We designed an integrative systems biology framework to identify the significant regulators across several inflammatory skin diseases. With conventional transcriptome analysis, we identified 55 shared genes, which are enriched in several immune-associated pathways in eight inflammatory skin diseases. Next, we exploited the gene co-expression-, and protein-protein interaction-based networks to identify shared genes and protein components in different diseases with relevant functional implications. Additionally, the network analytics unravels 55 high-value proteins as significant regulators in molecular pathogenesis. We believe that these significant regulators should be explored with critical experimental approaches to identify the putative drug targets for more effective treatments. As an example, we identified IKZF1 as a shared significant master regulator in three inflammatory skin diseases, which can serve as a putative drug target with known disease-derived molecules for developing efficacious combinatorial treatments for hidradenitis suppurativa, atopic dermatitis, and rosacea. The proposed framework is very modular, which can indicate a significant path of molecular mechanism-based drug development from complex transcriptomics data and other multi-omics data.
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Flora A, Jepsen R, Kozera EK, Woods JA, Cains GD, Radzieta M, Jensen SO, Malone M, Frew JW. Human dermal fibroblast subpopulations and epithelial mesenchymal transition signals in hidradenitis suppurativa tunnels are normalized by spleen tyrosine kinase antagonism in vivo. PLoS One 2023; 18:e0282763. [PMID: 37922232 PMCID: PMC10624284 DOI: 10.1371/journal.pone.0282763] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/19/2023] [Indexed: 11/05/2023] Open
Abstract
Hidradenitis Suppurativa is a chronic inflammatory disease of which the pathogenesis is incompletely understood. Dermal fibroblasts have been previously identified as a major source of inflammatory cytokines, however information pertaining to the characteristics of subpopulations of fibroblasts in HS remains unexplored. Using in silico-deconvolution of whole-tissue RNAseq, Nanostring gene expression panels and confirmatory immunohistochemistry we identified fibroblast subpopulations in HS tissue and their relationship to disease severity and lesion morphology. Gene signatures of SFRP2+ fibroblast subsets were increased in lesional tissue, with gene signatures of SFRP1+ fibroblast subsets decreased. SFRP2+ and CXCL12+ fibroblast numbers, measured by IHC, were increased in HS tissue, with greater numbers associated with epithelialized tunnels and Hurley Stage 3 disease. Pro-inflammatory CXCL12+ fibroblasts were also increased, with reductions in SFRP1+ fibroblasts compared to healthy controls. Evidence of Epithelial Mesenchymal Transition was seen via altered gene expression of SNAI2 and altered protein expression of ZEB1, TWIST1, Snail/Slug, E-Cadherin and N-Cadherin in HS lesional tissue. The greatest dysregulation of EMT associated proteins was seen in biopsies containing epithelialized tunnels. The use of the oral Spleen tyrosine Kinase inhibitor Fostamatinib significantly reduced expression of genes associated with chronic inflammation, fibroblast proliferation and migration suggesting a potential role for targeting fibroblast activity in HS.
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Affiliation(s)
- Akshay Flora
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, Australia
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
| | | | - Emily K. Kozera
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
| | - Jane A. Woods
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
| | - Geoffrey D. Cains
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
| | - Michael Radzieta
- South West Sydney Limb Preservation and Wound Research, Ingham Institute for Applied Medical Research, Liverpool, Australia
- School of Medicine, Western Sydney University, Sydney, Australia
| | - Slade O. Jensen
- School of Medicine, Western Sydney University, Sydney, Australia
| | - Matthew Malone
- South West Sydney Limb Preservation and Wound Research, Ingham Institute for Applied Medical Research, Liverpool, Australia
- School of Medicine, Western Sydney University, Sydney, Australia
| | - John W. Frew
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, Australia
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
- Holdsworth House Medical Practice, Sydney, Australia
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Jepsen R, Edwards C, Flora A, Kozera E, Frew JW. A proof-of-concept open-label clinical trial of spleen tyrosine kinase antagonism using fostamatinib in moderate-to-severe hidradenitis suppurativa. J Am Acad Dermatol 2023; 89:694-702. [PMID: 37307994 DOI: 10.1016/j.jaad.2023.05.076] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/10/2023] [Accepted: 05/28/2023] [Indexed: 06/14/2023]
Abstract
BACKGROUND Hidradenitis suppurativa (HS) is an autoinflammatory disorder of keratinization with a prominence of B cells and plasma cells. Fostamatinib is a spleen tyrosine kinase inhibitor targeting B cells and plasma cells. OBJECTIVES To assess the safety, tolerability, and clinical response at week 4 and week 12 of fostamatinib in moderate-to-severe HS. METHODS Twenty participants were administered fostamatinib 100 mg twice a day for 4 weeks, escalating to 150 mg twice a day thereafter until week 12. Participants were assessed for adverse events and clinical response assessed by HiSCR (Hidradenitis Suppurativa Clinical Response Score) and IHS4 (International Hidradenitis Suppurativa Severity Score) as well as other outcomes including DLQI (Dermatology Life Quality Index), visual analog scale, and physician global assessment. RESULTS All 20 participants completed the week 4 and week 12 endpoints. Fostamatinib was well tolerated in this cohort with no grade 2/3 adverse events reported. A total of 85% achieved HiSCR at week 4 and 85% at week 12. The greatest reduction in disease activity was seen at weeks 4/5 with worsening in a proportion of patients thereafter. Significant improvements were seen in pain, itch, and quality of life. CONCLUSIONS Fostamatinib was well tolerated in this HS cohort with no serious adverse events and improvement in clinical outcomes. Targeting B cells/plasma cells may be a viable therapeutic strategy in HS and requires further exploration.
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Affiliation(s)
- Rebecca Jepsen
- Holdsworth House Medical Practice, Sydney, Australia; Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, Australia
| | - Chloe Edwards
- Holdsworth House Medical Practice, Sydney, Australia
| | - Akshay Flora
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, Australia; Department of Dermatology, Liverpool Hospital, Sydney, Australia; University of New South Wales, Sydney, Australia
| | - Emily Kozera
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, Australia; Department of Dermatology, Liverpool Hospital, Sydney, Australia; University of New South Wales, Sydney, Australia
| | - John W Frew
- Holdsworth House Medical Practice, Sydney, Australia; Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, Australia; Department of Dermatology, Liverpool Hospital, Sydney, Australia; University of New South Wales, Sydney, Australia.
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Nazzaro G, Calzari P, Vaienti S, Passoni E, Marzano AV. The role of imaging technologies in the diagnosis of hidradenitis suppurativa. Clin Dermatol 2023; 41:611-621. [PMID: 37652192 DOI: 10.1016/j.clindermatol.2023.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Hidradenitis suppurativa is a chronic, inflammatory, recurrent, and debilitating disease of the hair follicle. It presents with painful, deep-seated, inflamed lesions, such as nodules, abscesses, sinus tracts, and fistulas, generally located in the main folds. Clinical severity assessment alone can be reductive; noninvasive skin imaging technologies, such as ultrasound, magnetic resonance imaging, medical infrared thermography, computed tomography, and positron emission tomography, provide subclinical anatomical and functional details. These instrumental techniques confirm the clinical suspect, thus allowing an earlier diagnosis and improving patients' clinical evaluation, staging, and management. Finally, they might be helpful for preoperative mapping. In this contribution, we provide an overview of the current knowledge about noninvasive skin imaging techniques with a particular focus on ultrasonography, which is widely used thanks to its precision, versatility, and availability.
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Affiliation(s)
- Gianluca Nazzaro
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Dermatology Unit, Foundation IRCCS, Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - Paolo Calzari
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Silvia Vaienti
- Section of Dermatology and Venereology, Department of Medicine, University of Verona, Verona, Italy
| | - Emanuela Passoni
- Dermatology Unit, Foundation IRCCS, Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Angelo Valerio Marzano
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Dermatology Unit, Foundation IRCCS, Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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14
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Masson R, Ma E, Parvathala N, Shih T, Atluri S, Hogeling M, Hughes M, Sayed CJ, Shi VY, Hsiao JL. Efficacy of medical treatments for pediatric hidradenitis suppurativa: A systematic review. Pediatr Dermatol 2023; 40:775-788. [PMID: 37525978 DOI: 10.1111/pde.15404] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/11/2023] [Indexed: 08/02/2023]
Abstract
Hidradenitis suppurativa (HS) is a chronic, inflammatory skin condition that has been insufficiently studied in the pediatric population. Timely and effective medical treatments may improve quality of life, mitigate disease burden, and prevent the need for invasive procedural interventions such as surgical excisions. However, there is a paucity of research on the efficacy of medical management strategies for HS in children and adolescents. The aim of this study was to perform a systematic review of the literature on the efficacy and safety of medical treatments for HS in patients <18 years of age. In April 2022, MEDLINE and EMBASE databases were searched for articles on the efficacy of medical treatments for HS in the pediatric population. Between 1984 and 2022, 35 articles (101 patients) met the inclusion criteria. Most patients had Hurley Stage II disease (46.7%, 35/75) followed by Stage I (36%, 27/75), and Stage III (17.3%, 13/75). 100% (23/23) of patients responded to antibiotics, 100% (8/8) to finasteride, 93.9% (31/33) to biologics, 80% (4/5) to oral retinoids, and 50% (6/12) to metformin. Overall, this study demonstrates that medical treatment regimens can improve HS symptoms in pediatric patients, but the extent of improvement is unclear, and the results were largely based on case reports or case series. Prospective studies are warranted to better understand the efficacy and safety of medical treatments for pediatric HS. Clinical trials of HS therapies need to be inclusive of pediatric patients to help define the optimal timing of treatment initiation and guide patient selection.
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Affiliation(s)
- Rahul Masson
- Keck School of Medicine of USC, University of Southern California, Los Angeles, California, USA
| | - Elaine Ma
- Keck School of Medicine of USC, University of Southern California, Los Angeles, California, USA
| | - Neha Parvathala
- Keck School of Medicine of USC, University of Southern California, Los Angeles, California, USA
| | - Terri Shih
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Swetha Atluri
- College of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Marcia Hogeling
- Division of Dermatology, University of California, Los Angeles, California, USA
| | - Meagan Hughes
- Department of Dermatology, University of Southern California, Los Angeles, California, USA
- Division of Dermatology, Children's Hospital of Los Angeles, Los Angeles, California, USA
| | - Christopher J Sayed
- Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Vivian Y Shi
- Department of Dermatology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Jennifer L Hsiao
- Department of Dermatology, University of Southern California, Los Angeles, California, USA
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15
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Fragoso NM, Masson R, Gillenwater TJ, Shi VY, Hsiao JL. Emerging Treatments and the Clinical Trial Landscape for Hidradenitis Suppurativa Part I: Topical and Systemic Medical Therapies. Dermatol Ther (Heidelb) 2023:10.1007/s13555-023-00956-6. [PMID: 37402031 PMCID: PMC10366071 DOI: 10.1007/s13555-023-00956-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 06/01/2023] [Indexed: 07/05/2023] Open
Abstract
Hidradenitis suppurativa (HS) is an oftentimes debilitating condition that presents with painful nodules, abscesses, and sinus tracts. This condition is challenging to treat, in part because the pathogenesis of the condition is incompletely understood but also because there are limited therapeutic options. HS research is undergoing explosive growth with multiple new molecular pathways under study, which will hopefully lead to improved disease control for patients. Part I of this review will provide an overview of the emerging topical and systemic therapies under investigation for HS.
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Affiliation(s)
- Natalie M Fragoso
- Department of Dermatology, Dartmouth Hitchcock Medical Center, Lebanon, NH, USA
| | - Rahul Masson
- Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - T Justin Gillenwater
- Division of Plastic and Reconstructive Surgery, University of Southern California, Los Angeles, CA, USA
| | - Vivian Y Shi
- Department of Dermatology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Jennifer L Hsiao
- Department of Dermatology, University of Southern California, 1441 Eastlake Ave, Ezralow Tower, Suite 5301, Los Angeles, CA, 90089, USA.
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16
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Liu H, Santos LL, Smith SH. Modulation of Disease-Associated Pathways in Hidradenitis Suppurativa by the Janus Kinase 1 Inhibitor Povorcitinib: Transcriptomic and Proteomic Analyses of Two Phase 2 Studies. Int J Mol Sci 2023; 24:ijms24087185. [PMID: 37108348 PMCID: PMC10139090 DOI: 10.3390/ijms24087185] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/04/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Janus kinase (JAK)/signal transducer and activator of transcription signaling (STAT) has been implicated in the pathophysiology of hidradenitis suppurativa (HS). This study evaluated treatment-related transcriptomic and proteomic changes in patients with moderate-to-severe HS treated with the investigational oral JAK1-selective inhibitor povorcitinib (INCB054707) in two phase 2 trials. Lesional skin punch biopsies (baseline and Week 8) were taken from active HS lesions of patients receiving povorcitinib (15 or 30 mg) once daily (QD) or a placebo. RNA-seq and gene set enrichment analyses were used to evaluate the effects of povorcitinib on differential gene expression among previously reported gene signatures from HS and wounded skin. The number of differentially expressed genes was the greatest in the 30 mg povorcitinib QD dose group, consistent with the published efficacy results. Notably, the genes impacted reflected JAK/STAT signaling transcripts downstream of TNF-α signaling, or those regulated by TGF-β. Proteomic analyses were conducted on blood samples obtained at baseline and Weeks 4 and 8 from patients receiving povorcitinib (15, 30, 60, or 90 mg) QD or placebo. Povorcitinib was associated with transcriptomic downregulation of multiple HS and inflammatory signaling markers as well as the reversal of gene expression previously associated with HS lesional and wounded skin. Povorcitinib also demonstrated dose-dependent modulation of several proteins implicated in HS pathophysiology, with changes observed by Week 4. The reversal of HS lesional gene signatures and rapid, dose-dependent protein regulation highlight the potential of JAK1 inhibition to modulate underlying disease pathology in HS.
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Affiliation(s)
- Huiqing Liu
- Incyte Corporation, Wilmington, DE 19803, USA
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17
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Flora A, Kozera EK, Jepsen R, Gill K, Xu J, Frew JW. Baseline clinical, hormonal and molecular markers associated with clinical response to IL-23 antagonism in hidradenitis suppurativa: A prospective cohort study. Exp Dermatol 2023. [PMID: 36933897 DOI: 10.1111/exd.14789] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/27/2023] [Accepted: 03/04/2023] [Indexed: 03/20/2023]
Abstract
Hidradenitis suppurativa is a complex inflammatory disease in which predicting therapeutic response remains challenging. IL-23 interacts with sex hormones but the relationships between the two in HS remains uninvestigated. To assess whether baseline clinical, hormonal or molecular markers are associated with clinical response to IL-23 antagonism with risankizumab in hidradenitis suppurativa. Twenty six individuals with Hurley stage 2/3 disease were administered risankizumab 150 mg Week 0, 4, 12. Baseline sex hormones and skin biopsies were taken. Clinical response at Week 16 assessed by the HiSCR, and differences between responders and non-responders assessed. Eighteen of 26 participants achieved HiSCR50 at week 16 (69.2%). Clinical response to IL-23 antagonism was associated with male gender, elevated total serum testosterone and decreased levels of FSH. Stratification by clinical responders/nonresponders identified differentially expressed genes including PLPP4 and MAPK10. Immunohistochemistry identified elevated numbers of CD11c, IL-17A and IL-17F positive cells compared to nonresponders. CD11c + cells significantly correlated with serum levels of total testosterone and inversely correlated with serum FSH. Clinical response to IL-23 antagonism in HS is associated with serum sex hormones, Th17 polarized inflammation in lesional tissue and CD11c + cells. These potential therapeutic biomarkers require further validation in larger cohorts but may suggest potential targeted HS therapy.
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Affiliation(s)
- A Flora
- Department of Dermatology, Liverpool Hospital, Sydney, New South Wales, Australia.,Laboratory of Translational Cutaneous Medicine, Ingham Institute, Sydney, New South Wales, Australia.,University of New South Wales, Sydney, New South Wales, Australia
| | - E K Kozera
- Department of Dermatology, Liverpool Hospital, Sydney, New South Wales, Australia.,Laboratory of Translational Cutaneous Medicine, Ingham Institute, Sydney, New South Wales, Australia
| | - R Jepsen
- Holdsworth House Medical Practice, Sydney, New South Wales, Australia
| | - K Gill
- University of New South Wales, Sydney, New South Wales, Australia
| | - J Xu
- University of New South Wales, Sydney, New South Wales, Australia
| | - J W Frew
- Department of Dermatology, Liverpool Hospital, Sydney, New South Wales, Australia.,Laboratory of Translational Cutaneous Medicine, Ingham Institute, Sydney, New South Wales, Australia.,University of New South Wales, Sydney, New South Wales, Australia.,Holdsworth House Medical Practice, Sydney, New South Wales, Australia
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18
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Kimball AB, Prens EP, Passeron T, Maverakis E, Turchin I, Beeck S, Drogaris L, Geng Z, Zhan T, Messina I, Bechara FG. Efficacy and Safety of Risankizumab for the Treatment of Hidradenitis Suppurativa: A Phase 2, Randomized, Placebo-Controlled Trial. Dermatol Ther (Heidelb) 2023; 13:1099-1111. [PMID: 36892753 PMCID: PMC9997424 DOI: 10.1007/s13555-023-00913-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 02/23/2023] [Indexed: 03/10/2023] Open
Abstract
INTRODUCTION Hidradenitis suppurativa (HS) is a chronic, immune-mediated skin condition characterized by inflammatory lesions that can cause pain, impaired physical activity, and reduced quality of life. This study evaluated the efficacy and safety of risankizumab, a humanized immunoglobulin G1 monoclonal antibody that specifically inhibits interleukin 23 by binding to its p19 subunit, for the treatment of HS. METHODS This phase II multicenter, randomized, placebo-controlled, double-blind study investigated the efficacy and safety of risankizumab in patients with moderate-to-severe HS. Patients were randomized 1:1:1 to receive subcutaneous risankizumab 180 mg; risankizumab 360 mg; or placebo at weeks 0, 1, 2, 4, and 12. Patients initially randomized to placebo received blinded risankizumab 360 mg at weeks 16, 17, and 18; patients initially randomized to risankizumab received blinded matching placebo at the same time points. From weeks 20-60, all patients received open-label risankizumab 360 mg every 8 weeks. The primary endpoint was the achievement of HS Clinical Response (HiSCR) at week 16. Safety was assessed by monitoring of treatment-emergent adverse events (TEAEs). RESULTS A total of 243 patients were randomized (risankizumab 180 mg, n = 80; risankizumab 360 mg, n = 81; placebo, n = 82). HiSCR was achieved by 46.8% of patients with risankizumab 180 mg, 43.4% with risankizumab 360 mg, and 41.5% with placebo at week 16. The primary endpoint was not met, and the study was terminated early. Incidence of TEAEs, severe TEAEs, TEAEs considered possibly related to study drug, and TEAEs leading to discontinuation of study drug were generally low and comparable across treatment groups. CONCLUSION Risankizumab does not appear to be an efficacious treatment for moderate-to-severe HS. Future studies to understand the complex molecular mechanisms underlying HS pathogenesis and develop improved therapies are warranted. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT03926169.
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Affiliation(s)
- Alexa B Kimball
- Clinical Laboratory for Epidemiology and Applied Research in Skin (CLEARS), Department of Dermatology, Beth Israel Deaconess Medical Center-Harvard Medical School, 330 Brookline Avenue, Shapiro 2, Boston, MA, 02215, USA.
| | - Errol P Prens
- Department of Dermatology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Thierry Passeron
- Department of Dermatology, Centre Hospitalier Universitaire de Nice, Université Côte d'Azur, Nice, France.,Centre Méditerranéen de Médecine Moléculaire, INSERM U1065, Université Côte d'Azur, Nice, France
| | - Emanual Maverakis
- Department of Dermatology, University of California, Davis, Sacramento, CA, USA
| | - Irina Turchin
- Brunswick Dermatology Center, Fredericton, NB, Canada.,Department of Medicine, Dalhousie University, Halifax, NS, Canada.,Probity Medical Research, Waterloo, ON, Canada
| | | | | | | | | | | | - Falk G Bechara
- Department of Dermatology, Venereology and Allergology, St Josef Hospital, Ruhr-University, Bochum, Germany
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19
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Reshetylo S, Narla S, Bakker C, Freeman T, Farah RS, Hamzavi IH, Goldfarb N. Systematic review of photodynamic therapy for the treatment of hidradenitis suppurativa. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2023; 39:39-50. [PMID: 35713108 PMCID: PMC10087637 DOI: 10.1111/phpp.12812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 05/19/2022] [Accepted: 06/14/2022] [Indexed: 01/18/2023]
Abstract
OBJECTIVE To perform a systematic review of available literature regarding the use of 5-aminolevulinic acid (ALA) and ALA derivative photodynamic therapy (PDT) in the treatment of hidradenitis suppurativa (HS) and provide recommendations on its use. METHODS A systematic review was performed of all published studies up to September 1, 2019 from nine databases, including PubMed, that evaluated PDT in the treatment of HS. For each study, quality of evidence and risk of bias was evaluated. Recommendations from the body of evidence were created based on Strength of Recommendation and Taxonomy (SORT) criteria. RESULTS Eighteen studies met inclusion criteria. The majority of studies had a high risk of bias. Blue light PDT with 20% ALA and red light PDT with 16% methyl aminolevulinate (MAL) demonstrated some benefit based on a small number of poor-quality studies with a high risk of bias (Grade C, level III evidence). The most promising results were for 1%-5% ALA with intralesional diode, with good to complete response in 78%-94% of anatomic sites treated (Grade B, level II evidence). LIMITATIONS The majority of studies contained high levels of bias, with significant heterogeneity between studies. Conclusions are limited by small samples sizes, lack of randomized controlled trials, and differing protocols. CONCLUSION Further studies are needed to determine the clinical efficacy of 20% ALA with blue light and MAL with red light. Intralesional diode PDT shows the most promise and warrants further investigation in larger, randomized controlled trials.
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Affiliation(s)
- Sofiya Reshetylo
- Department of Dermatology, University of Minnesota, Minneapolis, MN, USA
| | - Shanthi Narla
- Department of Dermatology, St. Luke's University Health Network, Easton, PA, USA
| | - Caitlin Bakker
- University of Minnesota Libraries, University of Minnesota, Minneapolis, MN, USA
| | - Thomas Freeman
- Department of Dermatology, University of Minnesota, Minneapolis, MN, USA.,Department of Internal Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Ronda S Farah
- Department of Dermatology, University of Minnesota, Minneapolis, MN, USA
| | - Iltefat H Hamzavi
- Department of Dermatology, Multicultural Center, Henry Ford Health System, Detroit, MI, USA
| | - Noah Goldfarb
- Department of Dermatology, University of Minnesota, Minneapolis, MN, USA.,Department of Internal Medicine, University of Minnesota, Minneapolis, MN, USA.,Departments of Internal Medicine and Dermatology, Minneapolis VA Health Care System, Minneapolis, MN, USA
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20
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Real-world safety and clinical response of Janus kinase inhibitor upadacitinib in the treatment of hidradenitis suppurativa: A retrospective cohort study. J Am Acad Dermatol 2022; 87:1440-1442. [PMID: 35934210 DOI: 10.1016/j.jaad.2022.07.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/04/2022] [Accepted: 07/19/2022] [Indexed: 11/20/2022]
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21
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Faverio K, Peitsch WK, Görig T, Schneider‐Burrus S, Benzel F, Goebeler M, Schummer P, Badran A, Schaarschmidt M, Harth W, Mössner R, Kromer C. Patient Preferences in Hidradenitis Suppurativa (APProach‐HS): a discrete choice experiment. J Dtsch Dermatol Ges 2022; 20:1441-1452. [DOI: 10.1111/ddg.14886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 08/02/2022] [Indexed: 11/17/2022]
Affiliation(s)
- Kristin Faverio
- Department of Dermatology and Phlebology Vivantes Klinikum im Friedrichshain Berlin Germany
- Faculty of Medicine Charité – University Medicine Berlin Berlin Germany
| | - Wiebke K. Peitsch
- Department of Dermatology and Phlebology Vivantes Klinikum im Friedrichshain Berlin Germany
| | - Tatiana Görig
- Department of Medical Informatics Biometry and Epidemiology Friedrich‐Alexander‐University of Erlangen‐Nuremberg Erlangen Germany
| | | | - Friderike Benzel
- Department of Dermatology and Phlebology Vivantes Klinikum im Friedrichshain Berlin Germany
| | - Matthias Goebeler
- Department of Dermatology Venereology and Allergology University Hospital Würzburg Würzburg Germany
| | - Patrick Schummer
- Department of Dermatology Venereology and Allergology University Hospital Würzburg Würzburg Germany
| | - Alaa Badran
- Department of Dermatology Venereology and Allergology University Hospital Würzburg Würzburg Germany
| | - Marthe‐Lisa Schaarschmidt
- Department of Dermatology Venereology and Allergology University Medical Center Mannheim Heidelberg University Mannheim Germany
| | - Wolfgang Harth
- Department of Dermatology and Allergology Vivantes Klinikum Spandau Berlin Germany
| | - Rotraut Mössner
- Department of Dermatology Venereology and Allergology University Medical Center Göttingen Göttingen Germany
| | - Christian Kromer
- Department of Dermatology Venereology and Allergology University Medical Center Göttingen Göttingen Germany
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22
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Vellaichamy G, Amin AT, Dimitrion P, Hamzavi Z, Zhou L, Adrianto I, Mi QS. Recent advances in hidradenitis suppurativa: Role of race, genetics, and immunology. Front Genet 2022; 13:918858. [PMID: 36092908 PMCID: PMC9458948 DOI: 10.3389/fgene.2022.918858] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 08/02/2022] [Indexed: 12/01/2022] Open
Abstract
Hidradenitis suppurativa (HS) is a multifactorial chronic skin disease characterized by inflammation around the hair follicles commonly affecting intertriginous areas. The underlying pathogenesis of HS and its molecular mechanisms are largely understudied. Genetic studies in families have identified variants within the γ-secretase complex associated with HS; however, no definitive genotype-phenotype correlations have been made. The lack of knowledge regarding the intersection of genetics, immunology and environmental risk factors is a major obstacle to improving treatment for patients with HS. This article provides an overview of the role of race, genetics, and immunology in HS to provide insight into the multiple factors influencing the pathophysiology of HS.
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Affiliation(s)
- Gautham Vellaichamy
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health, Detroit, MI, United States
| | - Anya T. Amin
- College of Medicine and Life Sciences, University of Toledo, Toledo, OH, United States
| | - Peter Dimitrion
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health, Detroit, MI, United States
- Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI, United States
- Cancer Biology Graduate Program, School of Medicine, Wayne State University, Detroit, MI, United States
| | - Zaakir Hamzavi
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health, Detroit, MI, United States
| | - Li Zhou
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health, Detroit, MI, United States
- Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI, United States
- Department of Internal Medicine, Henry Ford Health, Detroit, MI, United States
| | - Indra Adrianto
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health, Detroit, MI, United States
- Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI, United States
- Center for Bioinformatics, Department of Public Health Sciences, Henry Ford Health, Detroit, MI, United States
| | - Qing-Sheng Mi
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health, Detroit, MI, United States
- Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI, United States
- Cancer Biology Graduate Program, School of Medicine, Wayne State University, Detroit, MI, United States
- Department of Internal Medicine, Henry Ford Health, Detroit, MI, United States
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23
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Phytotherapeuthics Affecting the IL-1/IL-17/G-CSF Axis: A Complementary Treatment Option for Hidradenitis Suppurativa? Int J Mol Sci 2022; 23:ijms23169057. [PMID: 36012322 PMCID: PMC9408811 DOI: 10.3390/ijms23169057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022] Open
Abstract
Hidradenitis suppurativa (HS; also designated as acne inversa) is a chronic inflammatory disease characterized by painful skin lesions that occur in the axillary, inguinal, gluteal and perianal areas of the body. These lesions contain recurring deep-seated, inflamed nodules and pus-discharging abscesses and fistulas. Affecting about 1% of the population, this common disease has gained appropriate clinical attention in the last years. Associated with numerous comorbidities including metabolic syndrome, HS is considered a systemic disease that severely impairs the quality of life and shortens life expectancy. Therapeutic options for HS are limited, comprising long-term antibiotic treatment, the surgical removal of affected skin areas, and neutralization of TNF-α, the only approved systemic treatment. Novel treatment options are needed to close the therapeutic gap. HS pathogenesis is increasingly better understood. In fact, neutrophilic granulocytes (neutrophils) seem to be decisive for the development of the purulent destructive skin inflammation in HS. Recent findings suggest a key role of the immune mediators IL-1β, IL-17A and G-CSF in the migration into and activation of neutrophils in the skin. Although phytomedical drugs display potent immunoregulatory properties and have been suggested as complementary therapy in several chronic disorders, their application in HS has not been considered so far. In this review, we describe the IL-1/IL-17/G-CSF axis and evaluate it as potential target for an integrated phytomedical treatment of HS.
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24
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Similar Levels of Efficacy of Two Different Maintenance Doses of Adalimumab on Clinical Severity and Quality of Life of Patients with Hidradenitis Suppurativa. J Clin Med 2022; 11:jcm11144037. [PMID: 35887799 PMCID: PMC9318217 DOI: 10.3390/jcm11144037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/04/2022] [Accepted: 07/06/2022] [Indexed: 02/04/2023] Open
Abstract
Adalimumab is the only biologic agent approved for the treatment of moderate-to-severe hidradenitis suppurativa (HS) patients (i.e., with Hurley II or III), which is recommended in two different maintenance doses (i.e., 40 mg weekly or 80 mg every two weeks). We conducted a prospective multicentric study to measure outcomes related to the severity of disease and quality of life (QoL) of patients affected by moderate-to-severe HS, treated with adalimumab at a maintenance dosing of 40 mg or 80 mg. Assessments were performed at baseline (T0) and after 32 weeks of treatment (T32). We enrolled 85 moderate-to-severe HS Italian patients, 43 men (50.6%) and 42 women, aged between 16 and 62 years (median 31 years, interquartile range 24.4–43.8). Statistically significant improvements were observed for clinical status (with a mean reduction of 7.1 points for the International Hidradenitis Suppurativa Severity Score System (IHS4)), pain levels (3.1 mean decrease in VAS), and QoL (3.4 mean improvement in DLQI score). Patients with no comorbidities, and those with higher levels of perceived pain showed significantly greater improvement in QoL than their counterpart from T0 to T32. As for the proportion of patients who at follow-up reached the minimal clinical important difference (MCID) in QoL, significantly higher proportions of success were observed for age (patients in the 29–39 category), pain (patients with higher reported pain), and Hurley stage III. While both treatment regimen groups (i.e., 40 vs. 80 mg) improved significantly, no statistical differences were observed when comparing the two treatment dosages.
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25
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Shih T, Lee K, Grogan T, De DR, Shi VY, Hsiao JL. Infliximab in Hidradenitis Suppurativa: A Systematic Review and Meta‐analysis. Dermatol Ther 2022; 35:e15691. [PMID: 35790062 PMCID: PMC9539481 DOI: 10.1111/dth.15691] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/16/2022] [Accepted: 07/01/2022] [Indexed: 11/30/2022]
Abstract
Hidradenitis suppurativa (HS) is a chronic inflammatory often recalcitrant to treatment. There is a lack of an updated systematic data review for infliximab use in HS. We conducted a systematic review and meta‐analysis of literature on infliximab in HS. This study was performed following Preferred Reporting Items for Systematic Reviews and Meta‐Analyses guidelines and was pre‐registered on PROSPERO (CRD42021283596). In 9/2021, MEDLINE and EMBASE were systematically searched for articles on infliximab in HS. Non‐English, duplicate, and studies with <5 HS patients were excluded. Study quality was assessed utilizing Cochrane Risk of Bias for prospective trials and Newcastle‐Ottawa Scale for cohort studies. Random effects meta‐analytical model, Cochran's Q statistic, and I squared index were performed. Nineteen articles (314 patients) met inclusion criteria (six prospective, 13 retrospective studies). All patients with HS severity data available (n = 299) had moderate‐to‐severe disease. Outcome measures used for meta‐analysis of the pooled response rate were largely based on clinician reported outcomes (16 studies). One utilized both clinician and patient assessment. Two utilized patient‐reported response alone. The pooled response rate of HS patients to infliximab was 83% (95% CI, 0.71–0.91). The most common adverse events (AEs) included non‐serious infections (13.2%) and infusion reaction (2.9%). The rate of serious AEs was 2.9%. Study limitations include the small number of prospective studies and heterogeneity between studies. Overall, infliximab is an effective treatment for moderate‐to‐severe HS. Efficacy of infliximab in HS should be compared to other biologics in larger, randomized controlled trials.
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Affiliation(s)
- Terri Shih
- David Geffen School of Medicine University of California Los Angeles Los Angeles CA USA
| | - Katrina Lee
- Department of Dermatology University of California Los Angeles Los Angeles CA USA
| | - Tristan Grogan
- Department of Medicine Statistics Core, David Geffen School of Medicine University of California Los Angeles CA USA
| | - Devea R. De
- University at Buffalo, Jacobs School of Medicine and Biomedical Sciences Buffalo NY USA
| | - Vivian Y. Shi
- Department of Dermatology University of Arkansas for Medical Sciences Little Rock AR USA
| | - Jennifer L. Hsiao
- Department of Dermatology University of Southern California Los Angeles CA USA
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Navrazhina K, Frew JW, Grand D, Williams SC, Hur H, Gonzalez J, Garcet S, Krueger JG. IL-17RA blockade by brodalumab decreases inflammatory pathways in hidradenitis suppurativa skin and serum. Br J Dermatol 2022; 187:223-233. [PMID: 35191018 PMCID: PMC9356983 DOI: 10.1111/bjd.21060] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 12/26/2021] [Accepted: 02/18/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Hidradenitis suppurativa (HS) is an inflammatory skin disease with dysregulation of the IL-17 axis. Recently we reported clinical benefit of brodalumab, a human anti-IL-17 receptor A (IL-17RA) monoclonal antibody, in moderate-to-severe HS. OBJECTIVES To characterize the molecular response to brodalumab in HS skin and serum, and to identify biomarkers of treatment response. METHODS Ten participants that received 210 mg/1.5mL brodalumab subcutaneously at week 0, 1, 2, 4 and every 2 weeks after were included in this molecular profiling study (NCT03960268). RNA-sequencing and immunohistochemistry of nonlesional, perilesional and lesional HS skin biopsies, and Olink high throughput proteomics of serum at baseline, week 4 and week 12 were assessed. RESULTS At week 12, brodalumab led to a decrease of overall inflammation, and improvement of psoriasis-, keratinocyte- and neutrophil-related pathways. Despite perilesional and lesional skin having no differentially expressed genes at baseline, treatment response was best assessed in perilesional skin. In serum, brodalumab treatment decreased pathways involved in neutrophil inflammation. Patients with higher baseline expression of neutrophil-associated Lipocalin-2 (LCN2) in the skin and IL-17A in the serum demonstrated greater decreases of HS-related inflammatory cytokines as measured in skin biopsies at week 12. CONCLUSIONS IL-17RA inhibition by brodalumab impacts several pathogenic inflammatory axes in HS. Perilesional skin provides a valid and robust assessment of treatment response. Expression of LCN2 in skin and IL-17A in serum may be used as biomarkers to stratify patients that may have a superior molecular response to brodalumab =.
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Affiliation(s)
- Kristina Navrazhina
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, NY, USA.,Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD program, New York, NY, USA
| | - John W Frew
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, NY, USA
| | - David Grand
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, NY, USA
| | - Samuel C Williams
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, NY, USA.,Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD program, New York, NY, USA
| | - Hong Hur
- Center for Clinical and Translational Science, The Rockefeller University, New York, NY, USA
| | - Juana Gonzalez
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, NY, USA
| | - Sandra Garcet
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, NY, USA
| | - James G Krueger
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, NY, USA
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Navrazhina K, Garcet S, Frew JW, Zheng X, Coats I, Guttman-Yassky E, Krueger JG. The inflammatory proteome of hidradenitis suppurativa skin is more expansive than that of psoriasis vulgaris. J Am Acad Dermatol 2022; 86:322-330. [PMID: 34339761 PMCID: PMC8800946 DOI: 10.1016/j.jaad.2021.07.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/20/2021] [Accepted: 07/18/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Although hidradenitis suppurativa (HS) shares some transcriptomic and cellular infiltrate features with psoriasis, their skin proteome remains unknown. OBJECTIVE To define and compare inflammatory protein biomarkers of HS and psoriasis skin. METHODS We assessed 92 inflammatory biomarkers in HS (n = 13), psoriasis (n = 11), and control skin (n = 11) using Olink high-throughput proteomics. We also correlated HS skin and blood biomarkers using proteomics and RNA sequencing. RESULTS We identified 57 differentially expressed proteins (DEPs) in lesional psoriasis and 64 DEPs in lesional HS skin, compared to healthy controls. Both HS and psoriasis lesional skin demonstrated a significant upregulation of T helper 1 and T helper 17 proteins. Healthy-appearing perilesional HS skin had 63 DEPs compared to healthy controls. Nonlesional HS and psoriasis skin had 24 and 7 DEPs, respectively, compared to healthy controls. Tumor necrosis factor and 8 other proteins were significantly correlated with clinical severity in perilesional HS skin (2 cm from a nodule). LIMITATIONS Inclusion of only moderate-to-severe patients and the cohort size. CONCLUSION HS has a greater inflammatory profile and is more diffusely distributed compared with psoriasis. Proteins correlated with disease severity are potential disease mediators. Perilesional skin is comparably inflamed to lesional skin, suggesting the need to treat beyond skin nodules.
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Affiliation(s)
- Kristina Navrazhina
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, New York; Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD Program, New York, New York
| | - Sandra Garcet
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, New York
| | - John W Frew
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, New York
| | - Xiuzhong Zheng
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, New York
| | - Israel Coats
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, New York
| | - Emma Guttman-Yassky
- Laboratory of Inflammatory Skin Diseases, Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - James G Krueger
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, New York.
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Der Sarkissian S, Hessam S, Kirby JS, Lowes MA, Mintoff D, Naik HB, Ring HC, Suyien NC, Frew JW. Identification of Biomarkers and Critical Evaluation of Biomarker Validation in Hidradenitis Suppurativa: A Systematic Review. JAMA Dermatol 2022; 158:300-313. [PMID: 35044423 DOI: 10.1001/jamadermatol.2021.4926] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Importance The identification and validation of biomarkers in hidradenitis suppurativa (HS) has potential to improve the understanding and management of this chronic, burdensome disease. Objective To systematically identify all known HS biomarkers, categorize them by biomarker type, and critically evaluate their validity according to established criteria. Evidence Review Eligibility criteria for this review (PROSPERO Registration 230830) included randomized clinical trials, uncontrolled clinical trials, cohort studies, case-control studies, and other observational studies with no restrictions of patient age, sex, race or ethnicity, or language of publication up until December 31, 2020. All articles were categorized into biomarker type, defined using the US Food and Drug Administration Biomarkers, Endpoints, and other Tools (BEST) glossary. Assessment of each identified biomarker was undertaken in line with the US Food and Drug Administration and European Medicines Agency guidelines for the validation of proposed biomarkers. Assessment of the strength of overall data regarding individual biomarkers was undertaken using the Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) approach. Findings A total of 3953 nonduplicate articles were screened, of which 1429 articles were retrieved based on the include/exclusion criteria applied. After full-text screen and data extraction, 106 articles were included in this review. The evidence of strength of 6 categories of biomarkers (susceptibility/risk, diagnostic, monitoring, predictive, prognostic, and pharmacodynamic/response biomarkers) was assessed using GRADE criteria. A total of 48 biomarkers were identified with a minimum GRADE rating of moderate. Only 1 diagnostic (serum IL-2R), 1 monitoring (dermal Doppler vascularity), and 2 predictive biomarkers (epithelialized tunnels and positive family history of HS) achieved a GRADE rating of high. None of the identified biomarkers had sufficient clinical validity to be recommended for routine use in the clinical setting. Conclusions and Relevance Major barriers to the identification, validation, and introduction of routine biomarkers in the management of HS include lack of independent biomarker validation studies (especially assumption-free "omics"-based techniques); insufficient assessment of collinearity between identified or proposed biomarkers; and a lack of routine integration of biomarkers into the structure of clinical trials. International consensus among researchers, clinicians, and pharmaceutical stakeholders is required to standardize goals and methods and encourage biomarker integration into future HS clinical trials. This systematic review presents a number of priorities for near-term future research to overcome such barriers and limitations of biomarkers in HS.
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Affiliation(s)
| | - Schapoor Hessam
- Department of Dermatology, Venereology and Allergology, Ruhr-University Bochum, Bochum, Germany
| | - Joslyn S Kirby
- Department of Dermatology, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania
| | | | - Dillon Mintoff
- Department of Dermatology, Mater Dei Hospital, Msida, Malta
| | - Haley B Naik
- Department of Dermatology, University of California San Francisco.,Associate Editor, JAMA Dermatology
| | - Hans Christian Ring
- Department of Dermato-Venereology & Wound Healing Centre, Bispebjerg Hospital, Copenhagen, Denmark
| | - Nisha Chandran Suyien
- Division of Dermatology, Department of Medicine, National University Hospital, Singapore
| | - John W Frew
- Department of Dermatology, Liverpool Hospital, Sydney, Australia.,University of New South Wales, Sydney, Australia.,Laboratory of Translational Cutaneous Medicine, Ingham Institute of Applied Medical Research, Sydney, Australia
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29
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Ross Y, Ballou S. Association of Hidradenitis Suppurativa (HS) with Autoimmune Disease and Autoantibodies. Rheumatol Adv Pract 2021; 6:rkab108. [PMID: 35531048 PMCID: PMC9073366 DOI: 10.1093/rap/rkab108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/20/2021] [Indexed: 11/14/2022] Open
Abstract
Objective There is thought to be an association between hidradenitis suppurativa (HS) and autoimmune diseases. This retrospective longitudinal cohort study looked to identify whether certain autoimmune diseases or autoantibody specificities are more closely associated with HS than others and whether such associations are related to the severity of HS. Methods Patients were identified using the SlicerDicer search tool in Epic from 1 January 2010 to 15 August 2020. Search criteria included HS diagnosis by ICD-10 code (L73.2) and at least one visit to the dermatology department. Charts were reviewed to determine HS disease severity, treatment modalities, presence of autoimmune disease and autoantibody positivity. Results Six hundred and twenty-seven patients were identified. Most patients were female (75.3%) and had obese BMIs (71.1%), but there were no significant demographic differences between HS patients with and without autoimmune diseases. One hundred and one (16.1%) patients in the total cohort had at least one autoimmune disease, most commonly thyroid disease, lupus, psoriasis and IBD. Two hundred and twelve patients were also tested for the presence of autoantibodies. The most common positive autoantibody, found in 54 patients (28.4%), was ANA. Fifty-four patients with more severe HS disease manifestations required biologic medications to treat their HS. Neither HS severity nor biologic treatment was associated with presence of autoimmune disease or positive autoantibodies. Conclusion In a large cohort of patients with HS followed longitudinally, autoimmune disorders (especially lupus, psoriasis and IBD) and presence of autoantibodies were more commonly observed than expected in the normal population.
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Affiliation(s)
- Yael Ross
- Department of Rheumatology, Case Western Reserve University at MetroHealth Medical Center, Cleveland, OH, USA
| | - Stanley Ballou
- Department of Rheumatology, Case Western Reserve University at MetroHealth Medical Center, Cleveland, OH, USA
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30
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Seivright JR, Thompson A, Hamzavi I, Lowes MA, Porter M, Shi VY, Hsiao JL. Hidradenitis Suppurativa Specialty Clinics in the USA. Skin Appendage Disord 2021; 7:359-362. [PMID: 34604323 DOI: 10.1159/000516308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 03/27/2021] [Indexed: 12/12/2022] Open
Abstract
Background Hidradenitis suppurativa (HS) is a complex disease that is optimally managed with specialized care. Data on HS specialty clinics (HSSCs) are lacking. Methods HSSCs in the USA were identified on the HS Foundation website and analyzed for geographic location and clinic director demographics. Results We identified 29 HSSCs in 16 states, an increase from 22 in 2019. Thirty-four states currently lack a HSSC; the Mountain West and East South Central regions of the USA are particularly affected. Among HSSC directors, the majority (93.3%) are dermatologists, with slightly more women (53.3%) than men (46.7%). Most (86.7%) have an academic affiliation, and the majority (60%) graduated from residency <10 years ago. All directors are involved in research, and over half of HSSCs serve as HS clinical trial sites. Conclusions The number of HSSCs in the USA has been growing, yet there remains a dearth in certain regions. Given that HS is a disease with high unmet need and a rapidly evolving therapeutic landscape, we encourage the establishment of more HSSCs to improve access to specialized care.
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Affiliation(s)
- Justine R Seivright
- David Geffen School of Medicine, University of California, Los Angeles, California, USA
| | - Alyssa Thompson
- College of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Iltefat Hamzavi
- Department of Dermatology, Henry Ford Hospital, Detroit, Michigan, USA
| | | | - Martina Porter
- Department of Dermatology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Vivian Y Shi
- Department of Dermatology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Jennifer L Hsiao
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California, USA
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31
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Kashetsky N, Mufti A, Alabdulrazzaq S, Lytvyn Y, Sachdeva M, Rahat A, Yeung J. Treatment Outcomes of IL-17 Inhibitors in Hidradenitis Suppurativa: A Systematic Review. J Cutan Med Surg 2021; 26:79-86. [PMID: 34365863 DOI: 10.1177/12034754211035667] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The IL-17 pathway is a potential therapeutic target shown to be implicated in hidradenitis suppurativa (HS), however, it remains unclear whether evidence from mechanistic studies may translate into clinical practice. This systematic review summarizes available treatment outcomes of IL-17 inhibitors in patients with HS. Embase, MEDLINE, PubMed, and clinicaltrials.gov were comprehensively searched on February 26, 2021 to include 16 original studies representing 128 patients with HS (mean age: 36.5 years; age range: 21-47 years; male: 50.0%). Treatment outcomes were reported for the following biologics: secukinumab (n = 105), brodalumab (n = 22), and ixekizumab (n = 1). Patients were classified as responders or non-responders according to achievement of a positive response/improvement based on criteria established for each included study. For secukinumab 57.1% (n = 60/105) of patients were responders in a mean response period of 16.2 weeks and 42.9% (n = 45/105) were non-responders; for brodalumab, 100.0% (n = 22/22) of patients were responders within 4.4 weeks; and the one patient treated with ixekizumab was a responder within 10 weeks. In conclusion, IL-17 inhibitors may serve as an effective therapeutic target in approximately two-thirds of patients with HS and can be considered in those who are refractory to other treatment modalities. We also stress the importance of consistent outcome measures to enhance evidence synthesis, decrease reporting bias, provide potential for future meta-analysis, and ultimately improve clinical outcomes for patients with HS.
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Affiliation(s)
- Nadia Kashetsky
- 7512 Faculty of Medicine, Memorial University of Newfoundland, St. John's, Canada
| | - Asfandyar Mufti
- 7938 Division of Dermatology, University of Toronto, Toronto, ON, Canada
| | | | - Yuliya Lytvyn
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | | | | | - Jensen Yeung
- 7938 Division of Dermatology, University of Toronto, Toronto, ON, Canada.,Faculty of Medicine, University of Toronto, Toronto, ON, Canada.,Probity Medical Research, Waterloo, ON, Canada
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32
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Kaleta KP, Nikolakis G, Hossini AM, Balthasar O, Almansouri D, Vaiopoulos A, Knolle J, Boguslawska A, Wojas-Pelc A, Zouboulis CC. Metabolic Disorders/Obesity Is a Primary Risk Factor in Hidradenitis Suppurativa: An Immunohistochemical Real-World Approach. Dermatology 2021; 238:251-259. [PMID: 34293747 DOI: 10.1159/000517017] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 05/02/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Hidradenitis suppurativa (HS) is an inflammatory, potentially scarring disease of the hair follicle, affecting the apocrine gland-bearing skin areas. The major comorbid disorders associated with the occurrence or the aggravation of the disease are obesity and smoking. Numerous efforts to dissociate these factors led to controversial results. OBJECTIVES To assess the importance of metabolic disorders/obesity, smoking/environmental toxins, and inflammation in HS by utilizing the differential expression of major relevant protein markers in lesional skin of obese/smoking versus non-obese/non-smoking HS patients. METHODS Lesional skin specimens deriving from two groups of HS patients (BMI >30 and smokers, n = 12 vs. BMI <30 and non-smokers, n = 10) were stained with antibodies raised against irisin, PPARγ, and IGF-1R, which correlate with metabolic disorders/obesity, EGFR and AhR, associated with smoking, and IL-17, IL-17R, and S100A8, as markers of inflammation. RESULTS Metabolic disorders/obesity-related markers exhibited marked differential expression between the two groups, while smoking-associated markers a limited one. IL-17R expression was stronger in obese/smokers, and S100A8 staining exhibited intense strong immunoreactivity in both groups without significant difference. CONCLUSIONS The notion that obesity plays a role in HS development appears to be supported by the prominent regulation of the associated lesional biomarkers. Tobacco smoking might contribute less to HS than previously suspected.
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Affiliation(s)
- Katarzyna P Kaleta
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany.,Department of Dermatology, Jagiellonian University Medical College, Krakow, Poland
| | - Georgios Nikolakis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany.,European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany
| | - Amir M Hossini
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
| | - Ottfried Balthasar
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany.,Institute of Pathology, Dessau Medical Center, Dessau, Germany
| | - Daifallah Almansouri
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
| | - Aristeidis Vaiopoulos
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany.,European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany
| | - Jürgen Knolle
- Institute of Pathology, Dessau Medical Center, Dessau, Germany
| | - Anna Boguslawska
- Department of Paediatric and Adolescence Endocrinology, Paediatric Institute, Jagiellonian University Medical College, Krakow, Poland
| | - Anna Wojas-Pelc
- Department of Dermatology, Jagiellonian University Medical College, Krakow, Poland
| | - Christos C Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany.,European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany
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33
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Clinical Implementation of Biologics and Small Molecules in the Treatment of Hidradenitis Suppurativa. Drugs 2021; 81:1397-1410. [PMID: 34283386 PMCID: PMC8352818 DOI: 10.1007/s40265-021-01566-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2021] [Indexed: 01/03/2023]
Abstract
Hidradenitis suppurativa (HS) is a chronic, recurrent, auto-inflammatory skin disease originating from the hair follicles. The typical inflammatory nodules, abscesses, and draining sinus tracts (tunnels) are characterized by a massive influx of neutrophils, macrophages, B-cells, plasma cells, T helper (Th)1, Th17 cells and upregulation of pro-inflammatory cytokines such as IL-1, IL-17, IL-12/23, and TNF-α. Over the last decades, several clinical trials evaluated the clinical efficacy of different biologics targeting these pro-inflammatory cytokines, in particular TNF-α and IL-1. However, adalimumab is still the only registered drug for HS. This review discusses biologics and small molecules with high level of evidence for their clinical application, provides guidance on when and how to use these biologics and small molecules in clinical practice, and elaborates on the combination with medical and surgical treatment options beyond the current guidelines. Furthermore this review provides an overview of potential biologics and small molecules currently under investigation for novel targets in HS such as IL-36, C5a, Janus kinase family members, CD-40, LTA4 and CXCR1/2.
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34
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Frew JW. Therapeutic biomarkers in hidradenitis suppurativa: one step closer to the clinic. Br J Dermatol 2021; 185:696-697. [PMID: 34131898 DOI: 10.1111/bjd.20513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 11/27/2022]
Affiliation(s)
- J W Frew
- Department of Dermatology, Liverpool Hospital, Sydney, NSW, Australia.,University of New South Wales, Sydney, NSW, Australia.,Ingham Institute of Applied Medical Research, Sydney, NSW, Australia
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35
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Zouboulis CC, Frew JW, Giamarellos-Bourboulis EJ, Jemec GBE, Del Marmol V, Marzano AV, Nikolakis G, Sayed CJ, Tzellos T, Wolk K, Prens EP. Target molecules for future hidradenitis suppurativa treatment. Exp Dermatol 2021; 30 Suppl 1:8-17. [PMID: 34085329 DOI: 10.1111/exd.14338] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 03/18/2021] [Indexed: 12/13/2022]
Abstract
The registration of the tumour necrosis factor-α inhibitor adalimumab in 2015 was a major step forward in the treatment of hidradenitis suppurativa/acne inversa (HS). However, it soon became evident that the effectiveness of adalimumab in daily practice was highly variable. A significant unmet medical need of HS patients remained, and the search for novel therapeutic targets was intensified. During the 10th European Hidradenitis Suppurativa Foundation (EHSF) e.V. Conference, reknown international HS investigators virtually presented and discussed the published data on these potential target molecules for future HS treatment. This article addresses the most promising molecules currently under investigation from a pathophysiological and clinical point of view. With phase III trials ongoing, the anti- interleukin (IL)-17 biologics bimekizumab and secukinumab are in the most advanced stage of clinical development showing promising results. In addition, targeting IL-1α with bermekimab has shown encouraging results in two clinical trials. Directing treatment at neutrophil recruitment and activation by targeting IL-36 with spesolimab fits well in the pathogenic concept of HS and clinical phase II trial results are pending. In contrast to in situ evidence, Complement 5a (C5a) and C5a receptor blockade have only shown greater clinical benefit in patients with severe HS. Inhibition of Janus kinase (JAK) 1 signalling in HS showed clinical efficacy only in the highest dosage, highlighting that careful surveillance of the balance between safety and efficacy of JAK inhibition is warranted. Overall, clinical efficacies of all novel treatments reported so far are modest. To guide drug development, more and better-defined translational data on the pathogenesis of this severe and enigmatic inflammatory skin disease are required.
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Affiliation(s)
- Christos C Zouboulis
- European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany.,Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
| | - John W Frew
- Department of Dermatology, Liverpool Hospital, Sydney, NSW, Australia.,University of New South Wales, Sydney, NSW, Australia
| | - Evangelos J Giamarellos-Bourboulis
- European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany.,4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Gregor B E Jemec
- European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany.,Department of Dermatology, Zealand University Hospital, Roskilde, Denmark.,Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Veronique Del Marmol
- European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany.,Department of Dermatology, Hôpital Erasme, Universite Libre de Bruxelles, Bruxelles, Belgium
| | - Angelo V Marzano
- European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany.,Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Georgios Nikolakis
- European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany.,Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
| | - Christopher J Sayed
- Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Thrasyvoulos Tzellos
- European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany.,Department of Dermatology, NLSH University Hospital, Bodø, Norway
| | - Kerstin Wolk
- European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany.,Department of Dermatology and Institute of Medical Immunology/Psoriasis Research and Treatment Center, Charité-University Medicine, Berlin, Germany
| | - Errol P Prens
- European Hidradenitis Suppurativa Foundation e.V., Dessau, Germany.,Laboratory for Experimental Immunodermatology, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Dermatology, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
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36
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Gupta AK, Shear NH, Piguet V, Bamimore MA. Efficacy of non-surgical monotherapies for hidradenitis suppurativa: a systematic review and network meta-analyses of randomized trials. J DERMATOL TREAT 2021; 33:2149-2160. [PMID: 33961535 DOI: 10.1080/09546634.2021.1927949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE We determined the relative efficacy of non-surgical monotherapies for hidradenitis suppurativa (HS). METHODS Network meta-analyses were conducted to determine treatments' surface under the cumulative ranking curve (SUCRA) value (i.e., an estimate that ranks efficacy); pairwise comparisons were conducted. RESULTS AND CONCLUSIONS Ten trials were eligible for quantitative analyses; however, all did not have a common endpoint. Outcomes corresponded to pain severity, clinical response, quality of life and abscess count. For pain reduction, infliximab was ranked most efficacious (SUCRA =94%) compared to bermekimab, anakinra and placebo; infliximab reduced pain more significantly (p < 0.05) than anakinra and than placebo. For occurrence of clinical response, bimekizumab had the highest SUCRA (67%) relative to adalimumab, anakinra and placebo; bimekizumab was more efficacious than placebo (p < 0.05). For quality of life in mild HS, Botox had the highest SUCRA (94%) compared to adalimumab and placebo; Botox was more efficacious than placebo (p < 0.05). For reduction in abscess count, oral tetracycline had the highest SUCRA (48%) compared to topical clindamycin and vehicle. Our work-being the first NMA study on non-surgical HS monotherapies-contributes to the comparative effectiveness literature for this condition.
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Affiliation(s)
- Aditya K Gupta
- Mediprobe Research Inc., London, Ontario, Canada.,Division of Dermatology, Department of Medicine, University of Toronto School of Medicine, Toronto, Ontario, Canada
| | - Neil H Shear
- Division of Dermatology, Department of Medicine, University of Toronto School of Medicine, Toronto, Ontario, Canada.,Division of Dermatology, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Vincent Piguet
- Division of Dermatology, Department of Medicine, University of Toronto School of Medicine, Toronto, Ontario, Canada.,Division of Dermatology, Women's College Hospital, Toronto, Canada.,Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
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37
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Ribero S, Ramondetta A, Fabbrocini G, Bettoli V, Potenza C, Chiricozzi A, Licciardello M, Marzano AV, Bianchi L, Rozzo G, Fania L, Marasca C, Odorici G, Mambrin A, Moltrasio C, Caposiena Caro RD, Skroza N, Quaglino P, Siliquini N, Dapavo P. Effectiveness of Secukinumab in the treatment of moderate-severe hidradenitis suppurativa: results from an Italian multicentric retrospective study in a real-life setting. J Eur Acad Dermatol Venereol 2021; 35:e441-e442. [PMID: 33594790 DOI: 10.1111/jdv.17178] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 02/09/2021] [Indexed: 02/06/2023]
Affiliation(s)
- S Ribero
- Dermatology Clinic, University of Turin, Turin, Italy
| | - A Ramondetta
- Dermatology Clinic, University of Turin, Turin, Italy
| | - G Fabbrocini
- Department of Clinical Medicine and Surgery, Dermatology Unit, University Federico II of Naples, Naples, Italy
| | - V Bettoli
- Section of Dermatology and Infectious Diseases, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - C Potenza
- Dermatology Unit "Daniele Innocenzi", Department of Medical Surgical Sciences and Bio-Technologies, Sapienza University of Rome, Fiorini Hospital, Polo Pontino, Terracina, Italy
| | - A Chiricozzi
- Dermatology Unit, Department of Medical Surgical Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Dermatology Unit, Università Cattolica del Sacro Cuore, Rome, Italy
| | | | - A V Marzano
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Physiopathology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - L Bianchi
- Dermatology Unit, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - G Rozzo
- Dermatology Clinic, University of Turin, Turin, Italy
| | - L Fania
- Dermatology Department, Istituto Dermopatico dell'Immacolata-IRCCS, Rome, Italy
| | - C Marasca
- Department of Clinical Medicine and Surgery, Dermatology Unit, University Federico II of Naples, Naples, Italy
| | - G Odorici
- Section of Dermatology and Infectious Diseases, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - A Mambrin
- Dermatology Unit "Daniele Innocenzi", Department of Medical Surgical Sciences and Bio-Technologies, Sapienza University of Rome, Fiorini Hospital, Polo Pontino, Terracina, Italy
| | - C Moltrasio
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Medical Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - R D Caposiena Caro
- Dermatology Unit, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - N Skroza
- Dermatology Unit "Daniele Innocenzi", Department of Medical Surgical Sciences and Bio-Technologies, Sapienza University of Rome, Fiorini Hospital, Polo Pontino, Terracina, Italy
| | - P Quaglino
- Dermatology Clinic, University of Turin, Turin, Italy
| | - N Siliquini
- Dermatology Clinic, University of Turin, Turin, Italy
| | - P Dapavo
- Dermatology Clinic, University of Turin, Turin, Italy
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38
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Frew JW. Hidradenitis suppurativa is an autoinflammatory keratinization disease: A review of the clinical, histologic, and molecular evidence. JAAD Int 2020; 1:62-72. [PMID: 34409324 PMCID: PMC8361883 DOI: 10.1016/j.jdin.2020.05.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/30/2020] [Indexed: 02/07/2023] Open
Abstract
The pathogenic model of hidradenitis suppurativa is in the midst of a paradigm shift away from a disorder of primary follicular occlusion to an autoinflammatory keratinization disease. Observational, experimental, and therapeutic evidence supports the concept of hidradenitis suppurativa as a primarily inflammatory disorder, a disorder of autoimmunity, or both, in contrast to the current prevailing paradigm of primary follicular occlusion. The lack of reliable and high-fidelity disease models has limited the available experimental and mechanistic evidence to support or refute one pathogenic model over another. This scholarly review synthesizes the existing clinical, histologic, and molecular data to evaluate the extant evidence supporting the autoinflammatory paradigm and further informing the molecular mechanisms of hidradenitis suppurativa pathogenesis. Follicular hyperkeratosis/occlusion and perifollicular inflammation coexist in histologic specimens, with interleukin 1α demonstrated to stimulate comedogenesis in the infundibulum. pH elevation in occluded body sites alters the microbiome and amplifies existing T-helper cell type 17 immunoresponses. Known metabolic comorbidities and smoking are known to upregulate interleukin 1α in follicular keratinocytes. Identified genetic variants may alter epidermal growth factor receptor signaling, leading to upregulated keratinocyte inflammatory responses. The process of follicular rupture and dermal tunnel formation can be explained as secondary responses to inflammatory activation of fibroblasts and epithelial-mesenchymal transition, with antibody production associated with inflammatory amplification in advanced disease. This review aims to reevaluate and integrate the current clinical, histologic, and molecular data into a pathogenic model of hidradenitis suppurativa. This is essential to advance our understanding of the disease and identify novel therapeutic targets and approaches.
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Affiliation(s)
- John W Frew
- Laboratory of Investigative Dermatology, Rockefeller University, New York, New York
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