Systemic Therapy for Atopic Dermatitis in Children and Adolescents: A US Expert Consensus.

Atopic dermatitis (AD) is a chronic, type-2 mediated, inflammatory skin disease characterized by intense pruritus, disruption of skin barrier function, and immune dysregulation. Management strategies for AD are routinely determined based on disease severity. First-line treatment begins with basic skin care and topical anti-inflammatory medication, which is typically sufficient for the management of mild-to-moderate disease. For those patients with moderate-to-severe disease, systemic therapy is often required. This can involve off-label treatment with conventional immunosuppressant medications. However, this approach is limited by a lack of robust clinical trial data and safety concerns that necessitate close monitoring. The emergence of novel targeted biologics and small molecules to treat AD presents an opportunity to optimize AD management and patient outcomes by offering greater efficacy than traditional immunosuppressants and a favorable safety profile. As the treatment landscape shifts, clinicians can benefit from a standardized process of patient assessment and treatment, along with resources to help maintain contemporary knowledge of available therapeutic options. This US-based, expert-led consensus used a modified Delphi process to develop core recommendations for the use of systemic medications for the management of pediatric patients <18 years of age with moderate-to-severe AD.

Analysis of publicly available adverse events reported for pediatric patients treated with Janus kinase inhibitors.

Janus kinase inhibitors (JAKi) are drugs that block tyrosine kinases responsible for transducing cytokine signals. The first JAKi was approved by the US Food and Drug Administration (FDA) in 2011 to treat rheumatoid arthritis in adults. A pediatric indication was not approved until 8 years later, for acute graft-versus-host disease. Since then, topical and oral formulations have gained FDA approval for pediatric patients with dermatologic diseases. While increasing evidence supports the safety of these medications in adults, data are limited in children. We sought to determine whether JAKi adverse events (AEs) as reported in clinical trials and via postapproval pharmacovigilance services are comparable in adult and pediatric patients. Pharmacovigilance data were extracted from the FDA's Adverse Event Reporting System and the Canada Vigilance Adverse Reaction Online Database for baricitinib, upadacitinib, abrocitinib, ruxolitinib, and tofacitinib. The pooled data were analyzed to detect the most common AEs for specific JAKi and for the drug class. We assessed 399,649 AEs from 133,216 adults and 2883 AEs from 955 patients under 18 years old and identified slightly different AE profiles for the two age groups. Both populations had increased risk for infections and gastrointestinal AEs. However, pediatric patients reported a higher proportion of blood and lymphatic disorders, while reports of nervous system and musculoskeletal/connective tissue disorders were more common in adults. The spectrum of AEs extracted from pharmacovigilance reports was similar to clinical trials. The JAKi AE profiles we observed may prove helpful in counseling patients and their parents before starting therapy and for monitoring once patients are on therapy.

A case series of live attenuated vaccine administration in dupilumab-treated children with atopic dermatitis.

BACKGROUND AND OBJECTIVE: Current regulatory labeling recommends avoiding live vaccine use in dupilumab-treated patients. Clinical data are not available to support more specific guidance for live or live attenuated vaccines administration in dupilumab-treated patients. METHODS: Children (6 months-5 years old) with moderate-to-severe atopic dermatitis (AD) enrolled in a phase 2/3 clinical trial of dupilumab (LIBERTY AD PRESCHOOL Part A/B; NCT03346434) and subsequently participated in the LIBERTY AD PED-OLE (NCT02612454). During these studies, protocol deviations occurred in nine children who received measles, mumps, rubella (MMR) vaccine with or without varicella vaccine; five with a ≤12-week gap between dupilumab administration and vaccination and four with a >12-week gap after discontinuing dupilumab. RESULTS: Nine children (1 female; 8 male) had severe AD at baseline (8-56 months old). Of the nine children, five had a ≤12-week gap ranged 1-7 weeks between dupilumab administration and vaccination who received MMR vaccine (n = 2) or MMR and varicella vaccines (n = 3); among these, one resumed dupilumab treatment as early as 2 days and four resumed treatment 18-43 days after vaccination. No treatment-emergent adverse events, including serious adverse events and infections, were reported within the 4-week post-vaccination period in any children. CONCLUSIONS: In this case series of dupilumab-treated children with severe AD who received MMR vaccine with or without varicella vaccine, no adverse effects (including vaccine-related infection) were reported within 4 weeks after vaccination. Further studies are warranted to evaluate the safety, tolerability, and immune response to live attenuated vaccines in dupilumab-treated patients.

Dupilumab in children aged 6 months to younger than 6 years with uncontrolled atopic dermatitis: a randomised, double-blind, placebo-controlled, phase 3 trial.

BACKGROUND: Current systemic treatments for children younger than 6 years with moderate-to-severe atopic dermatitis that is uncontrolled with topical therapies might have suboptimal efficacy and safety. Dupilumab is approved for older children and adults with atopic dermatitis and for other type 2 inflammatory conditions. We aimed to evaluate efficacy and safety of dupilumab with concomitant low-potency topical corticosteroids in children aged 6 months to younger than 6 years with moderate-to-severe atopic dermatitis. METHODS: This randomised, double-blind, placebo-controlled, parallel-group, phase 3 trial was conducted in 31 hospitals, clinics, and academic institutions in Europe and North America. Eligible patients were aged 6 months to younger than 6 years, with moderate-to-severe atopic dermatitis (Investigator's Global Assessment [IGA] score 3-4) diagnosed according to consensus criteria of the American Academy of Dermatology, and an inadequate response to topical corticosteroids. Patients were randomly assigned (1:1) to subcutaneous placebo or dupilumab (bodyweight ≥5 kg to <15 kg: 200 mg; bodyweight ≥15 kg to <30 kg: 300 mg) every 4 weeks plus low-potency topical corticosteroids (hydrocortisone acetate 1% cream) for 16 weeks. Randomisation was stratified by age, baseline bodyweight, and region. Patient allocation was done via a central interactive web response system, and treatment allocation was masked. The primary endpoint at week 16 was the proportion of patients with IGA score 0-1 (clear or almost clear skin). The key secondary endpoint (coprimary endpoint for the EU and EU reference market) at week 16 was the proportion of patients with at least a 75% improvement from baseline in Eczema Area and Severity Index (EASI-75). Primary analyses were done in the full analysis set (ie, all randomly assigned patients, as randomly assigned) and safety analyses were done in all patients who received any study drug. This study was registered with ClinicalTrials.gov, NCT03346434. FINDINGS: Between June 30, 2020, and Feb 12, 2021, 197 patients were screened for eligibility, 162 of whom were randomly assigned to receive dupilumab (n=83) or placebo (n=79) plus topical corticosteroids. At week 16, significantly more patients in the dupilumab group than in the placebo group had IGA 0-1 (23 [28%] vs three [4%], difference 24% [95% CI 13-34]; p<0·0001) and EASI-75 (44 [53%] vs eight [11%], difference 42% [95% CI 29-55]; p<0·0001). Overall prevalence of adverse events was similar in the dupilumab group (53 [64%] of 83 patients) and placebo group (58 [74%] of 78 patients). Conjunctivitis incidence was higher in the dupilumab group (four [5%]) than the placebo group (none). No dupilumab-related adverse events were serious or led to treatment discontinuation. INTERPRETATION: Dupilumab significantly improved atopic dermatitis signs and symptoms versus placebo in children younger than 6 years. Dupilumab was well tolerated and showed an acceptable safety profile, similar to results in older children and adults. FUNDING: Sanofi and Regeneron Pharmaceuticals.

Integrated Exposure-Response of Dupilumab in Children, Adolescents, and Adults With Atopic Dermatitis Using Categorical and Continuous Efficacy Assessments: A Population Analysis.

BACKGROUND: While the majority of patients with atopic dermatitis (AD) achieve disease control with dupilumab treatment, there is variability in which patients achieve clear disease. The predictors of these responses are currently unclear. Integrated models were developed to evaluate the exposure-response (E-R) relationship of dupilumab in children, adolescents, and adults with AD. METHODS: Data from six Phase II and III clinical studies were pooled (2,366 adults [> 18 years], 243 adolescents [≥ 12 to < 18 years] and 359 children [≥ 6 to < 12 years]) for model development. Efficacy was assessed using the Eczema Area and Severity Index (EASI) and Investigator's Global Assessment (IGA). Indirect response models were applied to link measures of efficacy and functional serum dupilumab concentrations. The covariates on individual placebo-corrected response were assessed. Clinical trial scenarios were simulated to compare E-R relationships across age groups. Safety was not explored. RESULTS: After correcting for differences in placebo response and dupilumab exposure: 1) older age, higher body weight, lower baseline thymus and activation-regulated chemokine, and Asian race were associated with slightly lower EASI response, and no clear covariates were identified on IGA response; 2) clinical trial simulations generally showed slightly higher response at a given dupilumab concentration in children compared to adults and adolescents with severe and moderate AD. CONCLUSIONS: The collectively tested covariates explain some of the variability in dupilumab response in patients with AD. Patients in all age groups showed adequate response to dupilumab; however, children showed slightly higher drug effects compared to adults and adolescents at equivalent concentrations.

Methotrexate for inflammatory skin disease in pediatric patients: Consensus treatment guidelines.

Methotrexate (MTX) is a readily accessible drug, first used in 1948 and employed for a wide variety of indications since then. However, despite widespread off-label use, FDA labeling does not include approved indications for the use of MTX for many inflammatory skin diseases in pediatric patients, including morphea, psoriasis, atopic dermatitis, and alopecia areata, among others. Without published treatment guidelines, some clinicians may be hesitant to use MTX off-label, or uncomfortable prescribing MTX in this population. To address this unmet need, an expert consensus committee was convened to develop evidence- and consensus-based guidelines for use of MTX to treat pediatric inflammatory skin disease. Clinicians with experience and expertise in clinical research, drug development, and treating inflammatory skin disease in pediatric patients with MTX were recruited. Five committees were created based on major topic areas: (1) indications and contraindications, (2) dosing, (3) interactions with immunizations and medications, (4) adverse effects (potential for and management of), and (5) monitoring needs. Pertinent questions were generated and addressed by the relevant committee. The entire group participated in a modified Delphi process to establish agreement on recommendations for each question. The committee developed 46 evidence- and consensus-based recommendations, each with >70% agreement among members, across all five topics. These are presented in tables and text, along with a discussion of supporting literature, and level of evidence. These evidence- and consensus-based recommendations will support safe and effective use of MTX for the underserved population of pediatric patients who may benefit from this valuable, time-honored medication.

Prevalence of type 2 inflammatory diseases in pediatric patients with atopic dermatitis: Real-world evidence.

BACKGROUND: Patients with atopic dermatitis (AD) are considered at increased risk of developing other type 2 inflammatory diseases. However, real-world evidence based on large commercially insured pediatric populations in the United States is scarce. OBJECTIVE: To use a large claims database (IBM MarketScan 2013-2017) in the United States to assess prevalence and incidence of type 2 inflammatory diseases in pediatric patients with AD. METHODS: Pediatric patients with AD were matched 1:1 to patients without AD. Prevalence was assessed for conjunctivitis, rhinitis, urticaria, asthma, eosinophilic esophagitis, and chronic rhinosinusitis/nasal polyps at the 12 months' post-index date (the first AD diagnosis date for patients with AD; a randomly selected outpatient visit for control patients). The incidence of other type 2 inflammatory diseases post-index was assessed among patients 0-2 years of age. RESULTS: A total of 244,776 AD and matched non-AD patients were selected. The prevalence and incidence of type 2 inflammatory diseases were higher among patients with AD. Overall, the prevalence more than doubled for asthma, eosinophilic esophagitis, urticaria, and rhinitis, and increased with AD severity. LIMITATIONS: AD identification was based on billing diagnoses; the observation period was only 12 months; and the study was limited to commercially insured patients. CONCLUSION: The burden of type 2 inflammatory diseases in pediatric patients with AD is substantial, highlighting the need to optimize management of AD and its numerous associated morbidities.

Infections in children and adolescents treated with dupilumab in pediatric clinical trials for atopic dermatitis-A pooled analysis of trial data.

BACKGROUND/OBJECTIVE: Patients with moderate-to-severe atopic dermatitis (AD) have increased risk of cutaneous and extracutaneous infections. Dupilumab has previously been associated with reduced risk of serious/severe infections and non-herpetic skin infections in adults with moderate-to-severe AD. This analysis assessed infection rates with dupilumab versus placebo in pediatric patients with moderate-to-severe and severe AD participating in clinical trials. METHODS: This is a pooled analysis from two 16-week, randomized, placebo-controlled, phase 3 clinical trials of dupilumab: monotherapy in adolescents aged 12-17 years with moderate-to-severe AD (LIBERTY AD ADOL, NCT03054428) and with concomitant topical corticosteroids in children aged 6-11 years with severe AD (LIBERTY AD PEDS, NCT03345914). Data were pooled according to treatment received: placebo/approved dupilumab doses/other studied dupilumab doses/all dupilumab doses. Exposure-adjusted rates (patients with ≥1 event per 100 patient-years [nP/100 PY]) were used to compare treatment groups. RESULTS: Overall, 612 patients were included: 205 received placebo and 407 received dupilumab (261 received approved dupilumab doses and 146 received other studied dupilumab doses). Overall infection rates were numerically lower with dupilumab versus placebo (nP/100 PY: placebo, 227; approved dupilumab, 173; other dupilumab, 206; all dupilumab, 184). Total skin infections were numerically less frequent in all dupilumab-treated groups versus placebo (nP/100 PY: placebo, 67; approved dupilumab, 30; other dupilumab, 46; all dupilumab, 36). CONCLUSIONS: These data suggest that dupilumab treatment in children and adolescents with AD does not increase infection risk overall and is associated with lower rates of skin infections compared with placebo.

Efficacy and tolerability of an investigational nitric oxide-releasing topical gel in patients with molluscum contagiosum: A randomized clinical trial.

BACKGROUND: Although a variety of ablative, topical, and systemic therapies are used for molluscum contagiosum (MC), none has been well studied or approved by the US Food and Drug Administration. OBJECTIVES: To compare the efficacy and tolerability of topical SB206 (berdazimer sodium gel coadministered with hydrogel) with vehicle. METHODS: A 12-week, phase 2, multicenter, randomized, double-blind, vehicle-controlled clinical trial of topical SB206. RESULTS: A total of 256 patients (mean age, approximately 7 years) participated. Of patients who completed 12 weeks of treatment (n = 217), all MC lesions cleared in 20.0% of patients who received vehicle compared with 13.2%, 41.0%, and 35.1% of patients treated with twice daily SB206 4%, 8%, and 12%, respectively, and 41.9% of patients treated with once daily SB206 12%. Application-site erythema occurred in 10.6% of patients treated with SB206. Application-site reactions were the most common adverse events leading to treatment discontinuation, affecting 2 patients (approximately 4%) in each of the SB206 4%, 8%, and 12% twice daily groups and 0 patients in the vehicle or SB206 12% once daily groups. LIMITATIONS: A larger study is needed to confirm the efficacy of SB206 12% once daily and provide additional safety assessments. CONCLUSION: Of the doses studied, SB206 12% applied once daily provided the best balance between MC lesion clearance and tolerability for evaluation in a larger study.

Treatment patterns of pediatric patients with atopic dermatitis: A claims data analysis.

BACKGROUND: Real-world evidence on treatment patterns of pediatric patients with atopic dermatitis (AD) is sparse. OBJECTIVE: To assess current treatment patterns in pediatric AD patients. METHODS: Retrospective observational analysis of commercial insurance and Medicaid administrative claims data (January 2011-December 2016) for pediatric AD patients, stratified by age and provider type. RESULTS: The analytic sample comprised 607,258 pediatric AD patients. Median observation period was 30.3 months. Overall, 78.6% were prescribed ≥1 AD medication; 86.7% were prescribed topical corticosteroids, and 5.4% were prescribed a calcineurin inhibitor. Systemic corticosteroids (SCSs) were prescribed for 24.4% of patients, 51.8% of whom did not have asthma or allergic comorbidities. Of the 46.6% prescribed an antihistamine and 16.2% prescribed montelukast, 62.0% and 41.3%, respectively, did not have asthma or allergic comorbidities. Systemic immunosuppressants were rarely prescribed (<0.5%). Higher potency topical corticosteroid and SCS use increased with age. Treatment patterns varied by provider type; specialists were more likely to prescribe higher potency topicals and/or systemics, regardless of patient age. A minority of patients were treated by or referred to a specialist. LIMITATIONS: Identification of AD patients relied on billing diagnoses; the disease severity was proxied by the treatment prescribed. CONCLUSION: Results indicate that SCSs, despite known risks, and other medications with disproven efficacy in AD are frequently prescribed, suggesting a need for safer and more effective alternatives.

Efficacy and safety of dupilumab with concomitant topical corticosteroids in children 6 to 11 years old with severe atopic dermatitis: A randomized, double-blinded, placebo-controlled phase 3 trial.

BACKGROUND: Children with severe atopic dermatitis (AD) have limited treatment options. OBJECTIVE: We report the efficacy and safety of dupilumab + topical corticosteroids (TCS) in children aged 6-11 years with severe AD inadequately controlled with topical therapies. METHODS: In this double-blind, 16-week, phase 3 trial (NCT03345914), 367 patients were randomized 1:1:1 to 300 mg dupilumab every 4 weeks (300 mg q4w), a weight-based regimen of dupilumab every 2 weeks (100 mg q2w, baseline weight <30 kg; 200 mg q2w, baseline weight ≥30 kg), or placebo; with concomitant medium-potency TCS. RESULTS: Both the q4w and q2w dupilumab + TCS regimens resulted in clinically meaningful and statistically significant improvement in signs, symptoms, and quality of life (QOL) versus placebo + TCS in all prespecified endpoints. For q4w, q2w, and placebo, 32.8%, 29.5%, and 11.4% of patients, respectively, achieved Investigator's Global Assessment scores of 0 or 1; 69.7%, 67.2%, and 26.8% achieved ≥75% improvement in Eczema Area and Severity Index scores; and 50.8%, 58.3%, and 12.3% achieved ≥4-point reduction in worst itch score. Response to therapy was weight-dependent: optimal dupilumab doses for efficacy and safety were 300 mg q4w in children <30 kg and 200 mg q2w in children ≥30 kg. Conjunctivitis and injection-site reactions were more common with dupilumab + TCS than with placebo + TCS. LIMITATIONS: Short-term 16-week treatment period; severe AD only. CONCLUSION: Dupilumab + TCS is efficacious and well tolerated in children with severe AD, significantly improving signs, symptoms, and QOL.

Effects of variations in access to care for children with atopic dermatitis.

BACKGROUND: An estimated 50% of children in the US are Medicaid-insured. Some of these patients have poor health literacy and limited access to medications and specialty care. These factors affect treatment utilization for pediatric patients with atopic dermatitis (AD), the most common inflammatory skin disease in children. This study assesses and compares treatment patterns and healthcare resource utilization (HCRU) between large cohorts of Medicaid and commercially insured children with AD. METHODS: Pediatric patients with AD were identified from 2 large US healthcare claims databases (2011-2016). Included patients had continuous health plan eligibility for ≥6 months before and ≥12 months after the first AD diagnosis (index date). Patients with an autoimmune disease diagnosis within 6 months of the index date were excluded. Treatment patterns and all-cause and AD-related HCRU during the observation period were compared between commercially and Medicaid-insured children. RESULTS: A minority of children were evaluated by a dermatology or allergy/immunology specialist. Several significant differences were observed between commercially and Medicaid-insured children with AD. Disparities detected for Medicaid-insured children included: comparatively fewer received specialist care, emergency department and urgent care center utilization was higher, a greater proportion had asthma and non-atopic morbidities, high- potency topical corticosteroids and calcineurin inhibitors were less often prescribed, and prescriptions for antihistamines were more than three times higher, despite similar rates of comorbid asthma and allergies among antihistamine users. Treatment patterns also varied substantially across physician specialties. CONCLUSIONS: Results suggest barriers in accessing specialty care for all children with AD and significant differences in management between commercially and Medicaid-insured children. These disparities in treatment and access to specialty care may contribute to poor AD control, especially in Medicaid-insured patients.

Frey syndrome-like developmental dysautonomia in a child with PHACE syndrome.

PHACE syndrome classically presents with a large, segmental facial infantile hemangioma (IH) associated with structural and vascular abnormalities involving the head and neck, heart, and eyes. We evaluated an infant who presented with ptosis caused by a clinically subtle, deep right-sided periorbital IH identified on MRI that also incidentally revealed hypoplasia of the right common carotid and right internal carotid arteries, supporting a diagnosis of PHACE syndrome. She subsequently developed acute-onset, transient right-sided facial erythema without anisocoria, triggered by feeding and emotional stress. We believe this represents a Frey syndrome-like developmental dysautonomia, previously unreported in association with PHACE syndrome, suggesting an associated defect in neurovascular embryogenesis.

Systemic immunosuppressive therapy for inflammatory skin diseases in children: Expert consensus-based guidance for clinical decision-making during the COVID-19 pandemic.

BACKGROUND/OBJECTIVES: The COVID-19 pandemic has raised questions about the approach to management of systemic immunosuppressive therapies for dermatologic indications in children. Change to: Given the absence of data to address concerns related to SARS-CoV-2 infection and systemic immunosuppressive therapies in an evidence-based manner, a Pediatric Dermatology COVID-19 Response Task Force (PDCRTF) was assembled to offer time-sensitive guidance for clinicians. METHODS: A survey was distributed to an expert panel of 37 pediatric dermatologists on the PDCRTF to assess expert opinion and current practice related to three primary domains of systemic therapy: initiation, continuation, and laboratory monitoring. RESULTS: Nearly all respondents (97%) reported that the COVID-19 pandemic had impacted their decision to initiate immunosuppressive medications. The majority of pediatric dermatologists (87%) reported that they were pausing or reducing the frequency of laboratory monitoring for certain immunosuppressive medications. In asymptomatic patients, continuing therapy was the most popular choice across all medications queried. The majority agreed that patients on immunosuppressive medications who have a household exposure to COVID-19 or test positive for new infection should temporarily discontinue systemic and biologic medications, with the exception of systemic steroids, which may require tapering. CONCLUSIONS: The ultimate decision regarding initiation, continuation, and laboratory monitoring of immunosuppressive therapy during the pandemic requires careful deliberation, consideration of the little evidence available, and discussion with families. Consideration of an individual's adherence to COVID-19 preventive measures, risk of exposure, and the potential severity if infected must be weighed against the dermatological disease, medication, and risks to the patient of tapering or discontinuing therapies.

Pediatric dermatology workforce in the United States.

Studies have suggested there is a shortage of pediatric dermatologists in the United States, but the workforce has not been well defined. The Society for Pediatric Dermatology (SPD) Workforce Committee sought to characterize the US pediatric dermatology workforce with a nine-question survey, sent to all 484 US SPD members in December 2016. The response rate was 30%. Most pediatric dermatologists were practicing in major metropolitan markets, seeing an average of 80 patients a week with an average 6-week wait time. These findings indicate that geographic maldistribution and long wait times for new patient appointments remain substantial hurdles for adequate access to subspecialty pediatric dermatology care.

Paradoxic eczema in infants after heart transplantation.

New-onset psoriasis in patients receiving tumor necrosis factor inhibitors is well recognized in children and adults. We describe three children who underwent cardiac transplantation and developed an analogous form of paradoxic eczema occurring 2-48 months after starting systemic tacrolimus, a drug widely used topically to treat eczema. Anecdotal reports and our experience suggest that tacrolimus taper with alternative systemic antirejection immunosuppressant may lead to skin clearance. Pending additional insight, treatment should include optimizing skin barrier function, minimizing microbial and allergic triggers, and coordinating care to choose the best-tolerated systemic immunosuppressant regimen at the lowest effective dose.

Developing drugs for treatment of atopic dermatitis in children (≥3 months to <18 years of age): Draft guidance for industry.

Atopic dermatitis is the most common chronic skin disease, and it primarily affects children. Although atopic dermatitis (AD) has the highest effect on burden of skin disease, no high-level studies have defined optimal therapy for severe disease. Corticosteroids have been used to treat AD since the 1950s and remain the only systemic medication with Food and Drug Administration approval for this indication in children, despite published guidelines of care that recommend against this option. Several clinical trials with level 1 evidence have supported the use of topical treatments for mild to moderate atopic dermatitis in adults and children, but these trials have had little consistency in protocol design. Consensus recommendations will help standardize clinical development and trial design for children. The Food and Drug Administration issues guidance documents for industry as a source for "the Agency's current thinking on a particular subject." Although they are nonbinding, industry considers these documents to be the standard for clinical development and trial design. Our consensus group is the first to specifically address clinical trial design in this population. We developed a draft guidance document for industry, Developing Drugs for Treatment of Atopic Dermatitis in Children (≥3 months to <18 years of age). This draft guidance has been submitted to the Food and Drug Administration based on a provision in the Federal Register (Good Guidance Practices).

Treatment of selective antibody deficiency with IVIG resulting in decreased frequency of streptococcal infection and improvement of guttate psoriasis.

The association between guttate psoriasis and infection with group A Streptococcus (GAS) has been well established in the medical literature. However, responses to treatments aimed at GAS eradication such as systemic antibiotics or tonsillectomy are inconsistent. Further complicating treatment recommendations for a disease with a suspected microbial trigger, the standard therapy for severe psoriasis is with systemic immunosuppressant medications. This case report illustrates the role of GAS as a trigger for acute onset severe psoriasis in a child whose skin disease initially worsened with a trial of methotrexate. An immune evaluation confirmed a co-existing selective antibody deficiency. Subsequent treatment with intravenous immune globulin dramatically improved his underlying immune function and decreased GAS infections. This improvement in overall immune function and decrease in GAS infections cleared his skin disease. An interval change in formulation to subcutaneous immune globulin was not as effective.

Long-term safety and efficacy of etanercept in children and adolescents with plaque psoriasis.

BACKGROUND: There are no systemic therapies approved in the United States to treat pediatric psoriasis. OBJECTIVE: We sought to evaluate long-term safety and efficacy of etanercept in children and adolescents with moderate to severe plaque psoriasis. METHODS: This 5-year, open-label extension study enrolled patients aged 4 to 17 years who had participated in a 48-week parent study. End points included occurrence of adverse events (AEs) and serious AEs including infections, and rates of 75% and 90% improvement in Psoriasis Area and Severity Index score and clear/almost clear on static physician global assessment. RESULTS: Of 182 patients enrolled, 181 received etanercept and 69 completed 264 weeks. Through week 264, 161 (89.0%) patients reported an AE, most commonly upper respiratory tract infection (37.6%), nasopharyngitis (26.0%), and headache (21.5%). Seven patients reported 8 serious AEs; only 1 (cellulitis) was considered treatment-related. No cases of opportunistic infections or malignancy were reported. Rates of 75% improvement in Psoriasis Area and Severity Index score (∼ 60%-70%) and 90% improvement in Psoriasis Area and Severity Index score (∼ 30%-40%) and static physician global assessment status clear/almost clear (∼ 40%-50%) were maintained through week 264. LIMITATIONS: The number of patients remaining on study at week 264 was small. CONCLUSION: Etanercept in pediatric patients was generally well tolerated and efficacy was maintained in those who remained in the study for up to 264 weeks.