AI Drug Discovery for Pharma and Biotech

Drug discovery

49

drugs

With orphan designations

Overview

Inherited epidermolysis bullosa (EB) comprises rare genetic disorders characterized by skin and mucosal fragility due to mutations in genes encoding structural proteins critical for epidermal-dermal adhesion. Classified into four main types (simplex, junctional, dystrophic, Kindler syndrome), EB severity ranges from localized blistering to life-threatening complications involving internal organs. Diagnosis relies on genetic testing, immunofluorescence mapping, and electron microscopy. Management is multidisciplinary, emphasizing wound care, infection prevention, nutritional support, and emerging therapies like gene correction.

Population

  • Incidence: ~19.6 per million live births (US) [2][12]; prevalence ranges from 6.8–11.1 per million globally [2][7][14].

  • Affects all ethnicities and genders equally [1][4].

Burden

  • High morbidity: Chronic wounds, scarring, growth impairment, and squamous cell carcinoma risk (≥70% in severe dystrophic EB by adulthood) [9][11][16].

  • Financial strain: Annual costs exceed $100,000 for severe cases; significant caregiver burden and reduced quality of life [10][15].

Therapies

  • Supportive care: Nonadhesive dressings, pain management, and nutritional interventions [6][12].

  • Advanced therapies: FDA-approved beremagene geperpavec (B-VEC) gene therapy for dystrophic EB; investigational approaches include protein/cell-based therapies and drug repurposing (e.g., JAK/IL-13 inhibitors) [3][8][18].

Categories: rare genetic diseases, rare skin diseases

Research Papers

742 drug discovery papers about Inherited epidermolysis bullosa, with 2 first-in-class and 12 next-in-class emerging drug candidates forecasted to outperform the average preclinical success rate. Recent publications:

742 drug discovery papers about Inherited epidermolysis bullosa, with 2 first-in-class and 12 next-in-class emerging drug candidates forecasted to outperform the average preclinical success rate. Recent publications:

2026-07-08 | Esophageal Stricture in a 5-Year-Old Child with Epidermolysis Bullosa: Case Report of a Rare Complication at a Very Young Age.

Epidermolysis bullosa (EB) represents a group of rare inherited mechanobullous disorders characterized by extreme skin and mucosal fragility. Dystrophic EB (DEB), caused by mutations in the COL7A1 gene, often leads to cycles of blistering, healing, and scarring with multisystem involvement, including the gastrointestinal tract. Esophageal strictures are not uncommon in recessive DEB (RDEB), appearing after the first decade of life (∼12.6 years). We describe a relatively early complication in a 5-year-old child. A 5-year-old girl with genetically confirmed RDEB presented with 4 months of progressive dysphagia, vomiting, and retrosternal pain, more pronounced with solids. Her disease history included severe skin fragility since birth, scarring, and autoamputation of toes. Examination showed multiple healed ulcers, mitten deformities of all limbs, dental caries, and bilateral corneal opacities. Laboratory evaluation revealed anemia (Hb 7.7 g/dL). Barium swallow demonstrated a short mid-esophageal stricture; upper gastrointestinal endoscopy confirmed focal narrowing at 14 cm from the incisors. Endoscopic balloon dilatation up to 8 mm using a controlled radial expansion was performed, and the patient was initiated on oral losartan (8 mg/day) to reduce transforming growth factors-β-mediated fibrosis and stricture recurrence. Serial dilatations were planned at 3-week intervals. This case represents one of the youngest reported presentations of esophageal stricture in RDEB. The combination of early endoscopic balloon dilatation and adjunct antifibrotic therapy with losartan may reduce recurrence and improve nutritional outcomes. Monitoring for early esophageal involvement in young patients with RDEB is essential for timely intervention.

Open article ↗



2026-06-26 | Use of Tramadol in Pain Management of Neonates with Epidermolysis Bullosa: A Single-Center Experience.

Background: Inherited Epidermolysis Bullosa (EB) is a wide group of rare genetic disorders characterized by mucocutaneous fragility and blister formation. In neonates with EB, pain control is particularly complex because painful skin lesions coexist with developmental vulnerability, repeated handling, and the need for frequent wound care. Traditional opioid use carries a risk of adverse effects such as respiratory depression. Tramadol, a centrally acting weak opioid with a dual mechanism of action, may offer a safer alternative. Methods: This retrospective observational study analyzed neonates with different EB subtypes admitted to our tertiary neonatal care center between January 2020 and October 2022. Genetic diagnosis was confirmed via next-generation sequencing. Pain was assessed using the Neonatal Infant Pain Scale (NIPS). Tramadol was administered intravenously (1-2 mg/kg bolus or 0.1-0.2 mg/kg/h infusion) before daily wound dressings, then transitioned to oral dosing when appropriate. Pain scores before and after tramadol administration were compared. Results: Six neonates with various EB subtypes were included. All patients received tramadol for procedural pain control. No significant differences in NIPS scores were observed before and after tramadol administration (p = 0.997), indicating adequate pain control, although baseline pain scores were low, limiting interpretation of analgesic efficacy. No immediate adverse events were observed during hospitalization or reported during follow-up. Conclusions: Scheduled tramadol administration appears to be a safe and effective option for pain management in neonates with EB, with no observed hemodynamic or respiratory complications. Given the scarcity of data in this population, our findings highlight the need for multicenter studies to establish standardized analgesia protocols for EB neonates.

Open article ↗



2026-06-23 | O14 Reducing blistering during junctional epidermolysis bullosa by in vivo inhibition of tumour necrosis factor and interleukin-1β signalling

Abstract Introduction and aims Junctional epidermolysis bullosa (JEB) is an inherited, rare blistering disorder caused by loss of laminin-332, a mediator of epidermis–dermis adhesion, causing cutaneous fragility, impaired healing and exacerbating pruritus. Chronic inflammation is prominent, with elevated levels of the inflammatory cytokines tumour necrosis factor (TNF) and interleukin (IL)-1β relative to matched controls, yet in-depth immunological study of JEB is absent. We propose the underlying molecular pathology induces a distinct inflammatory niche, and repurposing TNF and IL-1β signalling inhibitors will improve inflammation and clinical symptoms. Accordingly, we aim to characterize cutaneous leucocyte composition and investigate effects of TNF and IL-1β inhibition on itch, inflammation and cutaneous phenotype. Methods Our inducible Lama3 knockout C57BL/6 murine model of severe, progressive JEB replicates symptoms of the human condition and is employed to investigate cutaneous leucocytes alongside evaluating TNF (adalimumab) and IL-1β (Anakinra) signalling inhibitor treatments on JEB pathology. We developed a murine leucocyte staining panel for spectral flow cytometry alongside a recording system to quantify pruritus during disease progression, a first in JEB research. In preliminary experiments, JEB mice received 2-week courses of adalimumab or anakinra with weekly recordings performed, and cutaneous tissues were harvested for downstream immunohistochemical and flow analyses. Results Blistered JEB skin was dominated by mononuclear phagocytes (prominently Ccr2+ macrophages, F4/80+Ly6clo macrophages, and monocytes), granulocytes, with few lymphocytes. Preliminary experimentation indicates adalimumab treatment arrested exacerbation of pruritus, reduced recruitment of monocytes, eosinophils, basophils and neutrophils, and elevated F4/80+Ly6clo and Ccr2+ macrophages alongside impeding angiogenesis. Conversely, anakinra treatment saw no improvements in pruritus, with mixed effects observed upon inflammatory leucocyte makeup, reducing neutrophil and monocyte infiltration simultaneously with F4/80+Ly6clo and Ccr2+ macrophage populations, while populations of T lymphocytes and eosinophils rose. Conclusions Our data illuminate underlying JEB wound inflammation, indicating repurposing established anti-TNF therapeutics presents a putative opportunity to improve patient quality of life, and that anti-IL-1β treatments may not relieve inflammation during JEB.

Open article ↗



2026-07-08 | Esophageal Stricture in a 5-Year-Old Child with Epidermolysis Bullosa: Case Report of a Rare Complication at a Very Young Age.

Epidermolysis bullosa (EB) represents a group of rare inherited mechanobullous disorders characterized by extreme skin and mucosal fragility. Dystrophic EB (DEB), caused by mutations in the COL7A1 gene, often leads to cycles of blistering, healing, and scarring with multisystem involvement, including the gastrointestinal tract. Esophageal strictures are not uncommon in recessive DEB (RDEB), appearing after the first decade of life (∼12.6 years). We describe a relatively early complication in a 5-year-old child. A 5-year-old girl with genetically confirmed RDEB presented with 4 months of progressive dysphagia, vomiting, and retrosternal pain, more pronounced with solids. Her disease history included severe skin fragility since birth, scarring, and autoamputation of toes. Examination showed multiple healed ulcers, mitten deformities of all limbs, dental caries, and bilateral corneal opacities. Laboratory evaluation revealed anemia (Hb 7.7 g/dL). Barium swallow demonstrated a short mid-esophageal stricture; upper gastrointestinal endoscopy confirmed focal narrowing at 14 cm from the incisors. Endoscopic balloon dilatation up to 8 mm using a controlled radial expansion was performed, and the patient was initiated on oral losartan (8 mg/day) to reduce transforming growth factors-β-mediated fibrosis and stricture recurrence. Serial dilatations were planned at 3-week intervals. This case represents one of the youngest reported presentations of esophageal stricture in RDEB. The combination of early endoscopic balloon dilatation and adjunct antifibrotic therapy with losartan may reduce recurrence and improve nutritional outcomes. Monitoring for early esophageal involvement in young patients with RDEB is essential for timely intervention.

Open article ↗



2026-06-26 | Use of Tramadol in Pain Management of Neonates with Epidermolysis Bullosa: A Single-Center Experience.

Background: Inherited Epidermolysis Bullosa (EB) is a wide group of rare genetic disorders characterized by mucocutaneous fragility and blister formation. In neonates with EB, pain control is particularly complex because painful skin lesions coexist with developmental vulnerability, repeated handling, and the need for frequent wound care. Traditional opioid use carries a risk of adverse effects such as respiratory depression. Tramadol, a centrally acting weak opioid with a dual mechanism of action, may offer a safer alternative. Methods: This retrospective observational study analyzed neonates with different EB subtypes admitted to our tertiary neonatal care center between January 2020 and October 2022. Genetic diagnosis was confirmed via next-generation sequencing. Pain was assessed using the Neonatal Infant Pain Scale (NIPS). Tramadol was administered intravenously (1-2 mg/kg bolus or 0.1-0.2 mg/kg/h infusion) before daily wound dressings, then transitioned to oral dosing when appropriate. Pain scores before and after tramadol administration were compared. Results: Six neonates with various EB subtypes were included. All patients received tramadol for procedural pain control. No significant differences in NIPS scores were observed before and after tramadol administration (p = 0.997), indicating adequate pain control, although baseline pain scores were low, limiting interpretation of analgesic efficacy. No immediate adverse events were observed during hospitalization or reported during follow-up. Conclusions: Scheduled tramadol administration appears to be a safe and effective option for pain management in neonates with EB, with no observed hemodynamic or respiratory complications. Given the scarcity of data in this population, our findings highlight the need for multicenter studies to establish standardized analgesia protocols for EB neonates.

Open article ↗



2026-06-23 | O14 Reducing blistering during junctional epidermolysis bullosa by in vivo inhibition of tumour necrosis factor and interleukin-1β signalling

Abstract Introduction and aims Junctional epidermolysis bullosa (JEB) is an inherited, rare blistering disorder caused by loss of laminin-332, a mediator of epidermis–dermis adhesion, causing cutaneous fragility, impaired healing and exacerbating pruritus. Chronic inflammation is prominent, with elevated levels of the inflammatory cytokines tumour necrosis factor (TNF) and interleukin (IL)-1β relative to matched controls, yet in-depth immunological study of JEB is absent. We propose the underlying molecular pathology induces a distinct inflammatory niche, and repurposing TNF and IL-1β signalling inhibitors will improve inflammation and clinical symptoms. Accordingly, we aim to characterize cutaneous leucocyte composition and investigate effects of TNF and IL-1β inhibition on itch, inflammation and cutaneous phenotype. Methods Our inducible Lama3 knockout C57BL/6 murine model of severe, progressive JEB replicates symptoms of the human condition and is employed to investigate cutaneous leucocytes alongside evaluating TNF (adalimumab) and IL-1β (Anakinra) signalling inhibitor treatments on JEB pathology. We developed a murine leucocyte staining panel for spectral flow cytometry alongside a recording system to quantify pruritus during disease progression, a first in JEB research. In preliminary experiments, JEB mice received 2-week courses of adalimumab or anakinra with weekly recordings performed, and cutaneous tissues were harvested for downstream immunohistochemical and flow analyses. Results Blistered JEB skin was dominated by mononuclear phagocytes (prominently Ccr2+ macrophages, F4/80+Ly6clo macrophages, and monocytes), granulocytes, with few lymphocytes. Preliminary experimentation indicates adalimumab treatment arrested exacerbation of pruritus, reduced recruitment of monocytes, eosinophils, basophils and neutrophils, and elevated F4/80+Ly6clo and Ccr2+ macrophages alongside impeding angiogenesis. Conversely, anakinra treatment saw no improvements in pruritus, with mixed effects observed upon inflammatory leucocyte makeup, reducing neutrophil and monocyte infiltration simultaneously with F4/80+Ly6clo and Ccr2+ macrophage populations, while populations of T lymphocytes and eosinophils rose. Conclusions Our data illuminate underlying JEB wound inflammation, indicating repurposing established anti-TNF therapeutics presents a putative opportunity to improve patient quality of life, and that anti-IL-1β treatments may not relieve inflammation during JEB.

Open article ↗



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Drug Discovery Landscape

49 orphan drug designations for Inherited epidermolysis bullosa, including 3 approved therapies.

49 orphan drug designations for Inherited epidermolysis bullosa, including 3 approved therapies.

Drug

Therapy type

Regulator

Orphan designation

Approval

Sponsor

sterile, processed, homogenized amniotic fluid solution

other

FDA

2025-09-12

Eliksa Therapeutics, Inc.

aseptic, allogeneic, pooled human umbilical cord derived mesenchymal stromal cells

cell therapies

FDA

2025-01-06

INmune Bio Inc.

25 C-terminal amino acids of human thrombin

peptides

FDA

2024-12-23

Xinnate AB

DNA plasmid containing the COL7A1 gene

gene therapies

EMA

2024-05-17

Branca Bunus Limited

allantoin (5-ureidohydantoin or glyoxyldiureide)

small molecules

FDA

2024-03-28

Paradigm Therapeutics

Adenine

gene therapies

EMA

2024-01-12

Raremoon Consulting Esp S.L.

4-Hydroxy-4'-methyoxytolan

small molecules

FDA

2023-05-01

BioMendics, LLC

Human decorin, natural anti-fibrotic protein, fused to the C-terminal vascular homing peptide tCRK

proteins

FDA

2023-01-31

Theravia

Adenine

gene therapies

FDA

2022-12-22

Energenesis Biomedical Co. Ltd.

Human decorin fused to the truncated homing peptide CRK

proteins

EMA

2022-07-18

THERAVIA

Cannabidiol

small molecules

EMA

2022-05-16

Tetra Bio-Pharma Europe Limited

Ribonucleoprotein complex composed of two sgRNA and a Cas9 nuclease targeting the human COL7A1 gene

gene editing enzymes

EMA

2021-12-10

Branca Bunus Limited

epidermal stem cells genetically modified with a gamma-retroviral (rv) vector expressing the full-length LAMB3 cDNA

cell therapies

FDA

2020-11-05

Holostem S.r.l.

Highly branched poly(beta-amino ester) complexed with a nanoplasmid containing the human COL7A1 gene

gene therapies

EMA

2020-10-19

Amryt Genetics Limited

cannabidiol

small molecules

FDA

2020-04-20

Tetra Bio-Pharma Inc.

delta-9-tetrahydrocannabinol and cannabidiol

small molecules

FDA

2020-04-14

Tetra Bio-Pharma Inc.

Autologous skin equivalent graft composed of keratinocytes and fibroblasts genetically corrected by CRISPR/Cas9-mediated excision of mutation-carrying COL7A1 exon 80

gene editing enzymes

EMA

2020-02-28

Consorcio Centro de Investigación Biomédica en Red

Hypotonic, acid oxidizing solution containing hypochlorous acid (HClO)

small molecules

FDA

2019-11-26

APR Applied Pharma Research s.a.

Diacerein

small molecules

EMA

2019-05-29

Worphmed S.r.l.

Allogeneic skin-derived ABCB5-positive mesenchymal stem cells

cell therapies

EMA

2019-05-29

Rheacell GmbH & Co. KG

allogeneic skin-derived ABCB5-positive mesenchymal stem cells

cell therapies

FDA

2019-05-01

RHEACELL GmbH & Co. KG

Losartan

small molecules

EMA

2019-02-26

Crowd Pharma Losartan GmbH & Co. KG

Losartan

small molecules

FDA

2019-01-29

Crowd Pharma Losartan GmbH & Co. KG

Diacerein

small molecules

FDA

2018-11-02

WORPHMED Srl

adipose-derived mesenchymal stem cells in a hydrogel sheet

cell therapies

FDA

2018-10-25

Anterogen Co., Ltd.

ubidecarenone

small molecules

FDA

2018-04-16

BPGbio, Inc

Genetically modified replication-incompetent herpes simplex virus-1 expressing collagen VII [Vyjuvek]

gene therapies

EMA

2018-04-16

2025-04-24

Krystal Biotech Netherlands B.V.

ANTISENSE OLIGONUCLEOTIDE TARGETING EXON 73 IN THE COL7A1 GENE

oligonucleotides

EMA

2017-11-08

IDEA Innovative Drug European Associates (Ireland) Limited

Asp-Arg-Val-Tyr-Ile-His-Pro

peptides

EMA

2017-06-20

Eliquent Life Sciences Limited

Ex-vivo-expanded autologous keratinocytes transduced with retroviral vector containing the COL7A1 gene

cell therapies

EMA

2017-02-27

Pharma Gateway AB

Autologous dermal fibroblasts genetically modified ex vivo with a lentiviral vector containing the human COL7A1 gene

gene therapies

EMA

2016-04-28

Intrexon Actobiotics N.V.

Ex-vivo-expanded autologous fibroblasts transduced with lentiviral vector containing the COL7A1 gene

gene therapies

EMA

2016-02-17

Dr Waseem Qasim

Ex-vivo-expanded autologous human keratinocytes containing epidermal stem cells transduced with a COL7A1-encoding retroviral vector

cell therapies

EMA

2015-03-19

Holostem S.r.l.

Ex-vivo-expanded autologous human keratinocytes containing epidermal stem cells transduced with a COL17A1-encoding retroviral vector

gene therapies

EMA

2015-03-19

Holostem S.r.l.

Ex-vivo-expanded autologous human keratinocytes containing epidermal stem cells transduced with a LAMB3-encoding retroviral vector

gene therapies

EMA

2015-03-19

Holostem S.r.l.

Allogeneic adipose-derived adult mesenchymal stem cells contained in a fibrin-based bioengineered dermis

cell therapies

EMA

2014-12-16

Biodan Yelah S.L.

diacerein

small molecules

FDA

2014-10-15

TWi Biotechnology, Inc.

birch triterpenes [Filsuvez]

small molecules

FDA

2014-08-07

2023-12-18

Chiesi Farmaceutici S.p.A.

Recombinant human alpha 1 chain homotrimer of type VII collagen

proteins

EMA

2014-06-04

Voisin Consulting Life Sciences

Diacerein

small molecules

EMA

2014-02-19

FGK Representative Service GmbH

Allantoin

small molecules

EMA

2014-01-16

Amicus Therapeutics Europe Limited

Allogeneic neonatal dermal fibroblasts [Dermagraft]

cell therapies

EMA

2011-06-21

Shire Pharmaceuticals Ireland Limited

Dry extract from birch bark (DER 5-10 : 1), extraction solvent n-heptane 95% (w/w) [Filsuvez]

small molecules

EMA

2011-02-23

2022-06-23

Chiesi Farmaceutici S.p.A.

Dermagraft

cell therapies

FDA

2010-12-13

Shire Regenerative Medicine, Inc.

Allogeneic human dermal fibroblasts

cell therapies

EMA

2010-09-20

Intercytex Ltd

Bilayer engineered skin composed of keratinocytes from the patient (autologous) and fibroblasts from a donor (allogeneic) embedded in a plasma matrix

cell therapies

EMA

2006-05-22

Biodan Yelah S.L.

Thymosin beta 4

peptides

FDA

2004-05-28

HLB Therapeutics Co., Ltd

allantoin

small molecules

FDA

2002-11-21

Scioderm, Inc.

Metronidazole (topical)

FDA

1987-11-24

Searle

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At Explority, we build first-of-its-kind AI to bring clarity to the earliest and riskiest stages of pharmaceutical research by forecasting which therapies are most likely to succeed. Explority AI web and mobile applications are properties of the Explority AI Inc., a company registered in the United States (File No. 10320493).
For all questions: support@explority.ai

Copyright © 2026 Explority AI Inc.

Explority AI logo

228 Park Ave S,
New York, USA.

At Explority, we build first-of-its-kind AI to bring clarity to the earliest and riskiest stages of pharmaceutical research by forecasting which therapies are most likely to succeed. Explority AI web and mobile applications are properties of the Explority AI Inc., a company registered in the United States (File No. 10320493).
For all questions: support@explority.ai

Copyright © 2026 Explority AI Inc.

Explority AI logo

228 Park Ave S,
New York, USA.

At Explority, we build first-of-its-kind AI to bring clarity to the earliest and riskiest stages of pharmaceutical research by forecasting which therapies are most likely to succeed. Explority AI web and mobile applications are properties of the Explority AI Inc., a company registered in the United States (File No. 10320493).
For all questions: support@explority.ai

Copyright © 2026 Explority AI Inc.