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1.
J Drugs Dermatol ; 23(5): 378-379, 2024 May 01.
Article En | MEDLINE | ID: mdl-38709705

Alopecia areata (AA) is a common autoimmune disorder. Although its pathogenesis is not fully understood, AA involves CD8 T cell-mediated destruction of the hair follicle. Several treatment options exist; however, there is minimal evidence in the pediatric population. Currently, there are no curative treatments for AA. The literature suggests that Janus kinase (JAK) inhibitors may be an effective treat-ment for AA, but evidence in pediatric patients is limited. Here, we report a case of severe pediatric AA treated with topical ruxolitinib, a JAK inhibitor. J Drugs Dermatol. 2024;23(5):378-379. doi:10.36849/JDD.7782.


Alopecia Areata , Janus Kinase Inhibitors , Nitriles , Pyrazoles , Pyrimidines , Humans , Alopecia Areata/drug therapy , Nitriles/administration & dosage , Pyrimidines/administration & dosage , Pyrazoles/administration & dosage , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/therapeutic use , Child , Skin Cream/administration & dosage , Treatment Outcome , Male , Administration, Cutaneous , Female
2.
J Dermatolog Treat ; 35(1): 2344591, 2024 Dec.
Article En | MEDLINE | ID: mdl-38653561

BACKGROUND: Previous clinical trials presented efficacy and safety of Janus kinase 1 inhibitor upadacitinib through 52 weeks for moderate-to-severe atopic dermatitis (AD). OBJECTIVES: To assess the effectiveness and safety of upadacitinib through 48 weeks in real-world clinical practice for Japanese AD patients (aged ≥12 years). METHODS: This retrospective study included 287 patients with moderate-to severe AD treated with 15 mg (n = 216) or 30 mg (n = 71) of upadacitinib daily. Effectiveness was assessed using eczema area severity index (EASI) scores, atopic dermatitis control tool (ADCT), peak pruritus-numerical rating scale (PP-NRS), and investigator's global assessment (IGA). Safety was evaluated through the incidence of treatment-emergent adverse events. RESULTS: From baseline, EASI, ADCT, PP-NRS, and IGA rapidly reduced at week 4, and the reduction was maintained until week 48 of treatment with upadacitinib at both doses. Achievement rates of EASI 75, EASI 90, and EASI 100 at week 48 were 63.5, 30.2, and 7.9 in 15 mg group, and 77.4, 54.8, and 3.2% in 30 mg group, respectively. Acne and herpes zoster were frequent, but no serious adverse events occurred. CONCLUSIONS: Upadacitinib was therapeutically effective and tolerable for moderate-to-severe AD through 48 weeks in real-world clinical practice.


Dermatitis, Atopic , Heterocyclic Compounds, 3-Ring , Severity of Illness Index , Humans , Dermatitis, Atopic/drug therapy , Male , Female , Heterocyclic Compounds, 3-Ring/adverse effects , Heterocyclic Compounds, 3-Ring/administration & dosage , Heterocyclic Compounds, 3-Ring/therapeutic use , Retrospective Studies , Adult , Treatment Outcome , Japan , Middle Aged , Young Adult , Adolescent , Dose-Response Relationship, Drug , Janus Kinase Inhibitors/adverse effects , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/therapeutic use , East Asian People
4.
Am J Clin Dermatol ; 25(3): 485-496, 2024 May.
Article En | MEDLINE | ID: mdl-38528257

BACKGROUND: Atopic dermatitis is a chronic inflammatory disease characterized by increased itch, skin pain, poor sleep quality, and other symptoms that negatively affect patient quality of life. Upadacitinib, an oral selective Janus kinase (JAK) inhibitor with greater inhibitory potency for JAK1 than JAK2, JAK3, or tyrosine kinase 2, is approved to treat moderate-to-severe atopic dermatitis. OBJECTIVE: We aimed to evaluate the effect of upadacitinib on patient-reported outcomes over 52 weeks in adults and adolescents with moderate-to-severe atopic dermatitis. METHODS: Data from two phase III monotherapy trials of upadacitinib (Measure Up 1, NCT03569293; Measure Up 2, NCT03607422) were integrated. Changes in pruritus, pain, other skin symptoms, sleep, quality of life, mental health, and patient impression were evaluated. Patient-reported outcome assessments included the Worst Pruritus Numerical Rating Scale, Patient-Oriented Eczema Measure, Dermatology Life Quality Index, Atopic Dermatitis Symptom Scale, Atopic Dermatitis Impact Scale, Hospital Anxiety and Depression Scale, SCORing Atopic Dermatitis index, Patient Global Impression of Severity, Patient Global Impression of Change, and Patient Global Impression of Treatment. Minimal clinically important differences, achievement of scores representing minimal disease burden, and the change from baseline were evaluated in patients who received upadacitinib through week 52 and in patients who received placebo through week 16. RESULTS: This analysis included 1609 patients (upadacitinib 15 mg, N = 557; upadacitinib 30 mg, N = 567; placebo, N = 485). Baseline demographics and disease characteristics were generally similar across all arms. The proportion of patients treated with upadacitinib reporting improvements in itch increased rapidly by week 1, increased steadily through week 8, and was sustained through week 52. Patients receiving upadacitinib also experienced improvements in pain and other skin symptoms by week 1, which continued through week 16; improvements were maintained through week 52. Patient reports of improved sleep increased rapidly from baseline to week 1, increased steadily through week 32, and were sustained through week 52. Patients experienced quality-of-life improvements through week 8, which were maintained through week 52. By week 1, patients in both upadacitinib groups experienced rapid improvements in emotional state, and by week 12, patients also achieved meaningful improvements in anxiety and depression. Improvements in mental health continued steadily through week 32 and were maintained through week 52. Patients treated with upadacitinib 30 mg generally experienced improvements in patient-reported outcomes earlier than those treated with upadacitinib 15 mg. Through week 16, patients receiving upadacitinib experienced greater improvements versus those receiving placebo in all assessed patient-reported outcomes. CONCLUSIONS: Adults and adolescents with moderate-to-severe atopic dermatitis treated with once-daily upadacitinib 15 or 30 mg experienced early improvements in itch, pain, other skin symptoms, sleep, quality of life, and mental health that were sustained through week 52. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov identifiers NCT03569293 (13 August 2018) and NCT03607422 (27 July 2018).


Atopic dermatitis, or eczema, is a condition that causes painful itchy dry skin, which is burdensome for patients and has a negative impact on quality of life. These symptoms frequently lead to disruption of daily activities such as school and work, decreased self-confidence, social isolation, anxiety, depression, and sleep disturbance. Symptoms of atopic dermatitis, such as itch and sleep disturbance, can only be assessed by patients. Therefore, it is important to consider patients' perceptions of their symptoms and the related impact on their quality of life, especially when evaluating treatment benefits. Upadacitinib is an orally administered drug approved to treat moderate-to-severe atopic dermatitis. In two clinical trials (Measure Up 1 and Measure Up 2), we investigated how treatment with upadacitinib (15-mg or 30-mg dose) given once daily to adults and adolescents with moderate-to-severe atopic dermatitis would impact their symptoms and quality of life over a 1-year period. We measured changes over time in patients' assessments of itch, pain, other skin-related symptoms, sleep, daily activities, emotional state, mental health, and overall quality of life. Patients treated with upadacitinib experienced improvements in symptoms of atopic dermatitis and quality of life within the first 1­2 weeks of treatment. These improvements continued to steadily increase in the following weeks and lasted through 1 year of treatment. In conclusion, once-daily treatment with upadacitinib 15 or 30 mg led to early and lasting improvements in the well-being of patients with atopic dermatitis.


Dermatitis, Atopic , Heterocyclic Compounds, 3-Ring , Janus Kinase Inhibitors , Patient Reported Outcome Measures , Pruritus , Quality of Life , Severity of Illness Index , Humans , Dermatitis, Atopic/drug therapy , Dermatitis, Atopic/diagnosis , Dermatitis, Atopic/complications , Male , Female , Adult , Adolescent , Heterocyclic Compounds, 3-Ring/administration & dosage , Heterocyclic Compounds, 3-Ring/therapeutic use , Treatment Outcome , Pruritus/drug therapy , Pruritus/etiology , Pruritus/diagnosis , Young Adult , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/therapeutic use , Janus Kinase Inhibitors/adverse effects , Middle Aged , Double-Blind Method
5.
Curr Gastroenterol Rep ; 26(5): 145-156, 2024 May.
Article En | MEDLINE | ID: mdl-38353899

PURPOSE OF REVIEW: Treatment of Inflammatory Bowel Diseases (IBD) is challenging; thus, the need for newer therapeutic options with an oral route of administration has led to the development of novel small molecules drugs (SMDs). We aim to highlight the most common Adverse events (AEs) associated with SMDs and recommendations on monitoring for AEs before and during treatment. RECENT FINDINGS: SMDs, such as Tofacitinib, a JAK inhibitor, have been associated with laboratory abnormalities, infections, and risk of thromboembolic events. Therefore, oral agents with greater selectivity in JAK inhibition, such as tofacitinib and upadacitinib, were later developed. Ozanimod and etrasimod, S1PR agonists, require closer safety profile monitoring by clinicians. Multiple therapies have been recently developed with variable efficacy. However, they have been associated with AEs, and some require close monitoring prior to and during therapy. Clinicians should highlight these adverse events to patients while reassuring the safety profile of these novel SMDs for IBD is favorable.


Inflammatory Bowel Diseases , Janus Kinase Inhibitors , Humans , Inflammatory Bowel Diseases/drug therapy , Administration, Oral , Janus Kinase Inhibitors/adverse effects , Janus Kinase Inhibitors/therapeutic use , Janus Kinase Inhibitors/administration & dosage , Gastrointestinal Agents/adverse effects , Gastrointestinal Agents/administration & dosage , Gastrointestinal Agents/therapeutic use , Drug Monitoring/methods , Pyrimidines/adverse effects , Pyrimidines/administration & dosage , Pyrimidines/therapeutic use , Heterocyclic Compounds, 3-Ring , Piperidines
6.
J Eur Acad Dermatol Venereol ; 38(5): 835-843, 2024 May.
Article En | MEDLINE | ID: mdl-38279559

Alopecia areata (AA) is an autoimmune disorder that affects the hair follicles, resulting in patchy recurrent hair loss. A large body of evidence has demonstrated the favourable clinical response of the Janus kinase (JAK) inhibitors and biologics, but a lack of comprehensive comparison among these therapies exists in the current literature. This study aimed to compare their efficacy. A systematic review and meta-analysis were performed including randomized trials that report the outcomes of the Severity of Alopecia Tool (SALT)50 and/or the mean change in SALT. These articles were pooled and a network meta-analysis (NAM) was conducted. Based on the surface under the cumulative ranking curve estimates obtained for the mean change in SALT score, baricitinib_4 mg (0.7949656) had the best probability of being the most effective therapy, followed by ritlecitinib_200_50 mg (0.7391906) and ivarmacitinib_4 mg (0.7292594). In contrast, dupilumab, secukinumab, tralokinumab and apremilast were less likely to be effective. Targeting the JAK signalling pathway holds great potential for restoring hair regrowth, albeit the contribution of JAK1, JAK2, JAK3 and TYK2 inhibition to the therapeutic effect on AA is apparently different. Baricitinib_4 mg and ritlecitinib 200_50 mg demonstrated notable efficacy, and both molecules displayed a dose-dependent effect, which is not observed with ivarmacitinib. Further investigations into the specific mechanisms of action of these JAK inhibitors are warranted to elucidate the reasons behind these differences.


Alopecia Areata , Bayes Theorem , Biological Products , Janus Kinase Inhibitors , Network Meta-Analysis , Adult , Humans , Administration, Oral , Alopecia Areata/drug therapy , Biological Products/therapeutic use , Biological Products/administration & dosage , Janus Kinase Inhibitors/therapeutic use , Janus Kinase Inhibitors/administration & dosage , Randomized Controlled Trials as Topic , Treatment Outcome
7.
N Engl J Med ; 388(21): 1966-1980, 2023 May 25.
Article En | MEDLINE | ID: mdl-37224198

BACKGROUND: Upadacitinib, an oral selective Janus kinase (JAK) inhibitor, is under investigation for the treatment of Crohn's disease. METHODS: In two phase 3 induction trials (U-EXCEL and U-EXCEED), we randomly assigned patients with moderate-to-severe Crohn's disease to receive 45 mg of upadacitinib or placebo (2:1 ratio) once daily for 12 weeks. Patients who had a clinical response to upadacitinib induction therapy were randomly assigned in the U-ENDURE maintenance trial to receive 15 mg of upadacitinib, 30 mg of upadacitinib, or placebo (1:1:1 ratio) once daily for 52 weeks. The primary end points for induction (week 12) and maintenance (week 52) were clinical remission (defined as a Crohn's Disease Activity Index score of <150 [range, 0 to 600, with higher scores indicating more severe disease activity]) and endoscopic response (defined as a decrease in the Simple Endoscopic Score for Crohn's Disease [SES-CD; range, 0 to 56, with higher scores indicating more severe disease] of >50% from baseline of the induction trial [or for patients with an SES-CD of 4 at baseline, a decrease of ≥2 points from baseline]). RESULTS: A total of 526 patients underwent randomization in U-EXCEL, 495 in U-EXCEED, and 502 in U-ENDURE. A significantly higher percentage of patients who received 45-mg upadacitinib than those who received placebo had clinical remission (in U-EXCEL, 49.5% vs. 29.1%; in U-EXCEED, 38.9% vs. 21.1%) and an endoscopic response (in U-EXCEL, 45.5% vs. 13.1%; in U-EXCEED, 34.6% vs. 3.5%) (P<0.001 for all comparisons). At week 52 in U-ENDURE, a higher percentage of patients had clinical remission with 15-mg upadacitinib (37.3%) or 30-mg upadacitinib (47.6%) than with placebo (15.1%), and a higher percentage had an endoscopic response with 15-mg upadacitinib (27.6%) or 30-mg upadacitinib (40.1%) than with placebo (7.3%) (P<0.001 for all comparisons). Herpes zoster infections occurred more frequently in the 45-mg and 30-mg upadacitinib groups than in the respective placebo groups, and hepatic disorders and neutropenia were more frequent in the 30-mg upadacitinib group than in the other maintenance groups. Gastrointestinal perforations developed in 4 patients who received 45-mg upadacitinib and in 1 patient each who received 30-mg or 15-mg upadacitinib. CONCLUSIONS: Upadacitinib induction and maintenance treatment was superior to placebo in patients with moderate-to-severe Crohn's disease. (Funded by AbbVie; U-EXCEL, U-EXCEED, and U-ENDURE ClinicalTrials.gov numbers, NCT03345849, NCT03345836, and NCT03345823.).


Crohn Disease , Janus Kinase Inhibitors , Humans , Crohn Disease/complications , Crohn Disease/drug therapy , Herpes Zoster/chemically induced , Herpes Zoster/etiology , Heterocyclic Compounds, 3-Ring/administration & dosage , Heterocyclic Compounds, 3-Ring/adverse effects , Heterocyclic Compounds, 3-Ring/therapeutic use , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/adverse effects , Janus Kinase Inhibitors/therapeutic use , Neutropenia/chemically induced , Neutropenia/etiology , Induction Chemotherapy/adverse effects , Induction Chemotherapy/methods , Maintenance Chemotherapy/adverse effects , Maintenance Chemotherapy/methods
8.
Clin Rheumatol ; 42(7): 1847-1853, 2023 Jul.
Article En | MEDLINE | ID: mdl-36929498

OBJECTIVE: We aimed to investigate the efficacy and safety of tofacitinib in adult anti-melanoma differentiation-associated 5 gene (Anti-MDA5) antibody-positive dermatomyositis (DM) patients and evaluate the effects of tofacitinib on peripheral lymphocyte subsets. METHODS: An open-label study was conducted of 15 new-onset, untreated adult patients with anti-MDA5-positive DM for tofacitinib with a dose of 5mg twice per day. The primary outcome was defined by the total improvement score after treatment for 6 months, classified according to the 2016 American College of Rheumatology/ European League Against Rheumatism (ACR/EULAR) response criteria for adult DM and polymyositis. Secondary outcomes after 6 months treatment comprised the change in predicted forced vital capacity, the percentage of predicted carbon monoxide diffusion capacity, ferritin level and peripheral blood lymphocyte subsets measured by flow cytometry. RESULTS: Disease responses occurred in 10 patients (71.4%) after 6 months. The median total improvement score was 43.75 (41.875-59.375). Two patients achieved major improvement, seven achieved moderate and one minimal. The serum ferritin level (p = 0.008), DLCO% (p = 0.009) was improved and a marked increase in total lymphocyte cells (p = 0.045) and CD8+ T cells (p = 0.006) was measured after 6 months treatment compared to baseline. CONCLUSION: Tofacitinib demonstrates efficacy for new-onset, untreated adult patients with anti-MDA5-positive DM and stimulates proliferation of peripheral lymphocyte subsets (especially total lymphocyte cells and CD8+ T cells) after 6 months treatment. Further studies are warranted to validate the current findings. Key Points • Treatment of anti-melanoma differentiation-associated 5 gene antibody positive dermatomyositis is always challenging. • This prospective, open-label clinical trial demonstrates tofacitinib is an effective and safe agent for new-onset adult patients with anti-MDA5-positive DM. • Tofacitinib treatment results in an increase in peripheral lymphocyte numbers, especially CD8+ T cells at 6 months compared with pre-treatment levels.


Dermatomyositis , Glucocorticoids , Janus Kinase Inhibitors , Janus Kinase Inhibitors/administration & dosage , Piperidines , Pyrimidines , Dermatomyositis/drug therapy , Prospective Studies , Humans , Treatment Outcome , Glucocorticoids/administration & dosage , Male , Female , Adult , Middle Aged , Aged
9.
Drug Metab Dispos ; 50(8): 1106-1118, 2022 08.
Article En | MEDLINE | ID: mdl-35701182

Abrocitinib is an oral once-daily Janus kinase 1 selective inhibitor being developed for the treatment of moderate-to-severe atopic dermatitis. This study examined the disposition of abrocitinib in male participants following oral and intravenous administration using accelerator mass spectroscopy methodology to estimate pharmacokinetic parameters and characterize metabolite (M) profiles. The results indicated abrocitinib had a systemic clearance of 64.2 L/h, a steady-state volume of distribution of 100 L, extent of absorption >90%, time to maximum plasma concentration of ∼0.5 hours, and absolute oral bioavailability of 60%. The half-life of both abrocitinib and total radioactivity was similar, with no indication of metabolite accumulation. Abrocitinib was the main circulating drug species in plasma (∼26%), with 3 major monohydroxylated metabolites (M1, M2, and M4) at >10%. Oxidative metabolism was the primary route of elimination for abrocitinib, with the greatest disposition of radioactivity shown in the urine (∼85%). In vitro phenotyping indicated abrocitinib cytochrome P450 fraction of metabolism assignments of 0.53 for CYP2C19, 0.30 for CYP2C9, 0.11 for CYP3A4, and ∼0.06 for CYP2B6. The principal systemic metabolites M1, M2, and M4 were primarily cleared renally. Abrocitinib, M1, and M2 showed pharmacology with similar Janus kinase 1 selectivity, whereas M4 was inactive. SIGNIFICANCE STATEMENT: This study provides a detailed understanding of the disposition and metabolism of abrocitinib, a Janus kinase inhibitor for atopic dermatitis, in humans, as well as characterization of clearance pathways and pharmacokinetics of abrocitinib and its metabolites.


Dermatitis, Atopic , Janus Kinase Inhibitors , Pyrimidines , Sulfonamides , Administration, Oral , Dermatitis, Atopic/drug therapy , Humans , Janus Kinase 1/antagonists & inhibitors , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/pharmacokinetics , Janus Kinase Inhibitors/pharmacology , Male , Pyrimidines/administration & dosage , Pyrimidines/pharmacokinetics , Pyrimidines/pharmacology , Sulfonamides/administration & dosage , Sulfonamides/pharmacokinetics , Sulfonamides/pharmacology
11.
N Engl J Med ; 386(4): 316-326, 2022 01 27.
Article En | MEDLINE | ID: mdl-35081280

BACKGROUND: Increases in lipid levels and cancers with tofacitinib prompted a trial of major adverse cardiovascular events (MACE) and cancers in patients with rheumatoid arthritis receiving tofacitinib as compared with a tumor necrosis factor (TNF) inhibitor. METHODS: We conducted a randomized, open-label, noninferiority, postauthorization, safety end-point trial involving patients with active rheumatoid arthritis despite methotrexate treatment who were 50 years of age or older and had at least one additional cardiovascular risk factor. Patients were randomly assigned in a 1:1:1 ratio to receive tofacitinib at a dose of 5 mg or 10 mg twice daily or a TNF inhibitor. The coprimary end points were adjudicated MACE and cancers, excluding nonmelanoma skin cancer. The noninferiority of tofacitinib would be shown if the upper boundary of the two-sided 95% confidence interval for the hazard ratio was less than 1.8 for the combined tofacitinib doses as compared with a TNF inhibitor. RESULTS: A total of 1455 patients received tofacitinib at a dose of 5 mg twice daily, 1456 received tofacitinib at a dose of 10 mg twice daily, and 1451 received a TNF inhibitor. During a median follow-up of 4.0 years, the incidences of MACE and cancer were higher with the combined tofacitinib doses (3.4% [98 patients] and 4.2% [122 patients], respectively) than with a TNF inhibitor (2.5% [37 patients] and 2.9% [42 patients]). The hazard ratios were 1.33 (95% confidence interval [CI], 0.91 to 1.94) for MACE and 1.48 (95% CI, 1.04 to 2.09) for cancers; the noninferiority of tofacitinib was not shown. The incidences of adjudicated opportunistic infections (including herpes zoster and tuberculosis), all herpes zoster (nonserious and serious), and adjudicated nonmelanoma skin cancer were higher with tofacitinib than with a TNF inhibitor. Efficacy was similar in all three groups, with improvements from month 2 that were sustained through trial completion. CONCLUSIONS: In this trial comparing the combined tofacitinib doses with a TNF inhibitor in a cardiovascular risk-enriched population, risks of MACE and cancers were higher with tofacitinib and did not meet noninferiority criteria. Several adverse events were more common with tofacitinib. (Funded by Pfizer; ORAL Surveillance ClinicalTrials.gov number, NCT02092467.).


Antirheumatic Agents/adverse effects , Arthritis, Rheumatoid/drug therapy , Cardiovascular Diseases/chemically induced , Janus Kinase Inhibitors/adverse effects , Neoplasms/chemically induced , Piperidines/adverse effects , Pyrimidines/adverse effects , Aged , Antirheumatic Agents/therapeutic use , Cardiovascular Diseases/epidemiology , Female , Heart Disease Risk Factors , Humans , Incidence , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/therapeutic use , Male , Middle Aged , Neoplasms/epidemiology , Piperidines/administration & dosage , Piperidines/therapeutic use , Pyrimidines/administration & dosage , Pyrimidines/therapeutic use
12.
Biochem Pharmacol ; 197: 114929, 2022 03.
Article En | MEDLINE | ID: mdl-35065024

Rheumatoid arthritis (RA) is a chronic autoimmune disorder and the treatment involves the use of traditional and biological disease modifying anti-rheumatic drugs (DMARDs). Recent studies have shown JAK/STAT signaling pathway as potential target for the treatment of RA. Novel JAK/STAT inhibitors viz tofacitinib and baricitinib have been recently approved by FDA for RA treatment and have attained substantial importance. However, the discernible risks of thromboembolism, gastrointestinal (GIT) perforations, hepatotoxicity and serious infections including tuberculosis, herpes zoster associated with their administration cannot be overlooked. Furthermore, these are highly expensive which limits their application for a broader use. These limitations provide the basis of exploring novel JAK/STAT inhibitors of natural origin with increased tolerability, safety and cost-effectiveness. In this review we confer an account of various natural compounds/phytochemicals that have proved to be beneficial in attenuating inflammation in RA via modulation of JAK/STAT signaling pathway. Some of these natural compounds including resveratrol have clearly indicated biochemical and clinically significant therapeutic effects in ameliorating RA both in vivo and in clinical settings. We further discuss the physicochemical challenges of poor solubility and absorption coupled with the use of natural JAK/STAT inhibitors. We thereafter discuss and summarize various drug delivery systems (DDS) to confront the physicochemical limitations of natural JAK/STAT inhibitors with the aim to enhance the therapeutic efficacy. Overall the review unveils the potential of natural JAK/STAT inhibitors as a cost-effective approach in ameliorating RA without incorporating the risks of adverse repercussions, thus setting the stage for clinical exploration of these compounds that may possibly complement the present RA therapy.


Antirheumatic Agents/administration & dosage , Arthritis, Rheumatoid/drug therapy , Janus Kinase Inhibitors/administration & dosage , Janus Kinases/antagonists & inhibitors , Phytochemicals/administration & dosage , STAT Transcription Factors/antagonists & inhibitors , Arthritis, Rheumatoid/metabolism , Forecasting , Humans , Janus Kinases/metabolism , STAT Transcription Factors/metabolism , Signal Transduction/drug effects , Signal Transduction/physiology , Treatment Outcome
13.
Allergol Int ; 71(1): 40-46, 2022 Jan.
Article En | MEDLINE | ID: mdl-34815171

Atopic dermatitis (AD) is characterized by chronic, eczematous, severe pruritic skin lesions. The knowledge on the pathogenesis of AD is driving the development of new drugs. From the research results, it has been revealed that Th2 cell-mediated immunity, skin barrier dysfunction, and pruritus cause a vicious cycle of AD. On the other hand, the Janus kinase (JAK)/signal transducers and activators of transcription (STAT) pathway are one of the essential signaling pathways in various inflammatory diseases including AD. In particular, TSLP, IL-4, IL-13 and IL-22 occupy an important position for Th2 cell-mediated immune reaction. Moreover, experimentally pan-JAK inhibitor suppress the STAT3 activation and improved the skin barrier function. Furthermore TSLP, IL-4, IL-13 and IL-31 contribute a lot to chronic pruritus of AD, and transmitted via JAK-STAT pathway. Therefore, JAK inhibitors are promising candidates for the treatment of severe AD. Here we review clinical trials of topical dergocitinib; a pan-JAK inhibitor, ruxolitinib; a JAK1 and JAK2 inhibitor, and tofacitinib; a JAK1, JAK2, and JAK3 inhibitor and oral baricitinib; a JAK1 and JAK2 inhibitor, abrocitinib and upadacitinib; JAK1 inhibitor. Significant improvements in the symptoms were obtained by each drug with low frequency of adverse events. In particular, oral JAK inhibitors have the ability to improve the pruritus and skin symptoms quickly. Therefore, the emergence of these topical and oral JAK inhibitors would be regarded as an innovation in the treatment of atopic dermatitis.


Dermatitis, Atopic/drug therapy , Janus Kinase Inhibitors/administration & dosage , Administration, Oral , Administration, Topical , Dermatitis, Atopic/immunology , Humans , Skin/physiopathology
14.
J Med Chem ; 65(1): 633-664, 2022 01 13.
Article En | MEDLINE | ID: mdl-34928601

The Janus family of tyrosine kinases (JAK1, JAK2, JAK3, and TYK2) play an essential role in the receptor signaling of cytokines that have been implicated in the pathogenesis of severe asthma, and there is emerging interest in the development of small-molecule-inhaled JAK inhibitors as treatments. Here, we describe the optimization of a quinazoline series of JAK inhibitors and the results of mouse lung pharmacokinetic (PK) studies where only low concentrations of parent compound were observed. Subsequent investigations revealed that the low exposure was due to metabolism by aldehyde oxidase (AO), so we sought to identify quinazolines that were not metabolized by AO. We found that specific substituents at the quinazoline 2-position prevented AO metabolism and this was rationalized through computational docking studies in the AO binding site, but they compromised kinome selectivity. Results presented here highlight that AO metabolism is a potential issue in the lung.


Aldehyde Oxidase/metabolism , Janus Kinase Inhibitors/pharmacokinetics , Lung/metabolism , Administration, Intranasal , Administration, Intravenous , Animals , Binding Sites , Drug Delivery Systems , Female , Humans , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/chemical synthesis , Liver/metabolism , Mice , Mice, Inbred BALB C , Models, Molecular , Molecular Docking Simulation , Quinazolines/chemical synthesis , Quinazolines/pharmacokinetics , Quinazolines/pharmacology , Structure-Activity Relationship
15.
Hematology ; 27(1): 23-31, 2022 Dec.
Article En | MEDLINE | ID: mdl-34957926

OBJECTIVES: Myelofibrosis is a rare bone marrow disorder associated with a high symptom burden, poor prognosis, and shortened survival. While allogeneic hematopoietic stem cell transplantation (HSCT) is the only curative treatment for myelofibrosis, the only approved and reimbursed pharmacotherapy for non-HSCT candidates in Belgium is ruxolitinib. METHODS: These updated recommendations are based on a consensus reached during two meetings and provide guidance for ruxolitinib administration in myelofibrosis patients considering the particularities of Belgian reimbursement criteria. RESULTS AND DISCUSSION: In Belgium, ruxolitinib is indicated and reimbursed for transplant-ineligible myelofibrosis patients from intermediate-2- and high-risk groups and from the intermediate-1-risk group with splenomegaly. Our recommendation is to also make ruxolitinib available in the pre-transplant setting for myelofibrosis patients with splenomegaly or heavy symptom burden. Before ruxolitinib initiation, complete blood cell counts are recommended, and the decision on the optimal dosage should be based on platelet count and clinical parameters. In anemic patients, we recommend starting doses of ruxolitinib of 10 mg twice daily for 12 weeks and we propose the use of erythropoiesis-stimulating agents in patients with endogenous erythropoietin levels ≤500 mU/mL. Increased vigilance for opportunistic infections and second primary malignancies is needed in ruxolitinib-treated myelofibrosis patients. Ruxolitinib treatment should be continued as long as there is clinical benefit (reduced splenomegaly or symptoms), and we recommend progressive dose tapering when stopping ruxolitinib. CONCLUSION: Based on new data and clinical experience, the panel of experts discussed ruxolitinib treatment in Belgian myelofibrosis patients with a focus on dose optimization/monitoring, adverse events, and interruption/rechallenge management.


Janus Kinase Inhibitors/therapeutic use , Molecular Targeted Therapy , Nitriles/therapeutic use , Primary Myelofibrosis/drug therapy , Pyrazoles/therapeutic use , Pyrimidines/therapeutic use , Biomarkers , Clinical Decision-Making , Combined Modality Therapy/methods , Disease Management , Disease Susceptibility , Drug-Related Side Effects and Adverse Reactions/diagnosis , Drug-Related Side Effects and Adverse Reactions/etiology , Drug-Related Side Effects and Adverse Reactions/therapy , Hematopoietic Stem Cell Transplantation/adverse effects , Hematopoietic Stem Cell Transplantation/methods , Humans , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/adverse effects , Molecular Targeted Therapy/methods , Nitriles/administration & dosage , Nitriles/adverse effects , Platelet Count , Primary Myelofibrosis/diagnosis , Primary Myelofibrosis/etiology , Prognosis , Pyrazoles/administration & dosage , Pyrazoles/adverse effects , Pyrimidines/administration & dosage , Pyrimidines/adverse effects , Treatment Outcome
16.
Int J Rheum Dis ; 25(2): 228-231, 2022 Feb.
Article En | MEDLINE | ID: mdl-34882988

Tofacitinib has an important role in pediatric rapidly progressive interstitial lung disease (ILD) associated with juvenile dermatomyositis (JDM), an otherwise potentially fatal condition. It may be useful in induction of remission and can be used safely to maintain remission. Serum ferritin and interleukin-18 are useful markers for tracking activity and response of JDM-associated ILD.


Dermatomyositis/drug therapy , Janus Kinase Inhibitors/administration & dosage , Lung Diseases, Interstitial/drug therapy , Piperidines/administration & dosage , Pyrimidines/administration & dosage , Child , Dermatomyositis/complications , Humans , Lung Diseases, Interstitial/diagnostic imaging , Lung Diseases, Interstitial/etiology , Lung Diseases, Interstitial/pathology , Male , Remission Induction/methods
17.
Dig Liver Dis ; 54(2): 192-197, 2022 Feb.
Article En | MEDLINE | ID: mdl-34887214

BACKGROUND: We sought to define the effectiveness and safety of tofacitinib in a real-world (RW) cohort of Israeli patients with moderate to severe ulcerative colitis (UC). METHODS: This was a multi-center retrospective observational cohort study (2019-2020) to assess the effectiveness and safety of tofacitinib induction and maintenance therapy up to 26 weeks. Clinical response and remission were defined as a reduction in Simple Clinical Colitis Activity Index (SCCAI) or partial Mayo score (PMS) of ≥3 points, and SCCAI ≤2 or a PMS ≤1, respectively. RESULTS: We included 73 patients, 47% male; median age 26 years [IQR: 19.5-39.5], disease duration 7 years [IQR: 2.5-14.5], follow-up 7.1 months [IQR: 3-12], 91% biologics-experienced, and 74% ≥ 2-biologics. Half of patients used concomitant corticosteroids (CS). Overall, 56.1% discontinued therapy due to either lack of response and/or adverse events (AEs), median time to discontinuation - 9.7 months [IQR 3.4-16]. Overall, response, remission, and CS-free-remission were achieved in 47.6%, 20.6%, and 17.5% of patients, respectively. At early maintenance (week 26), response, remission, and CS-free-remission were achieved in 65%, 22.5%, and 20% of patients, respectively. At week 26, tofacitinib 10 mg BID was still used in 43%. Seventeen patients (23.2%) had an adverse event including herpes zoster- 2.7%, hospitalization- 12.3%, and colectomy- 2.7%. CONCLUSIONS: Tofacitinib was effective in achieving CS-free-remission in about 1/5 of highly biologics -experienced patients with UC. Despite a considerable proportion of patients maintained on tofacitinib 10 mg bid, it was well tolerated and safe. Earlier positioning of tofacitinib in the therapeutic algorithm may result in improved outcomes.


Colitis, Ulcerative/drug therapy , Janus Kinase Inhibitors/administration & dosage , Piperidines/administration & dosage , Pyrimidines/administration & dosage , Adrenal Cortex Hormones/administration & dosage , Adult , Colectomy/statistics & numerical data , Drug Therapy, Combination , Female , Follow-Up Studies , Hospitalization/statistics & numerical data , Humans , Induction Chemotherapy , Israel , Male , Retrospective Studies , Tertiary Care Centers , Time Factors , Treatment Outcome
18.
J Manag Care Spec Pharm ; 28(1): 108-114, 2022 Jan.
Article En | MEDLINE | ID: mdl-34949111

DISCLOSURES: Funding for this summary was contributed by Arnold Ventures, The Donaghue Foundation, Harvard Pilgrim Health Care, and Kaiser Foundation Health Plan to the Institute for Clinical and Economic Review (ICER), an independent organization that evaluates the evidence on the value of health care interventions. ICER's annual policy summit is supported by dues from AbbVie, America's Health Insurance Plans, Anthem, Alnylam, AstraZeneca, Biogen, Blue Shield of CA, Boehringer-Ingelheim, Cambia Health Services, CVS, Editas, Evolve Pharmacy, Express Scripts, Genentech/Roche, GlaxoSmithKline, Harvard Pilgrim, Health Care Service Corporation, HealthFirst, Health Partners, Humana, Johnson & Johnson (Janssen), Kaiser Permanente, LEO Pharma, Mallinckrodt, Merck, Novartis, National Pharmaceutical Council, Pfizer, Premera, Prime Therapeutics, Regeneron, Sanofi, Sun Life Financial, uniQure, and United Healthcare. Agboola, Herron-Smith, Nhan, Rind, and Pearson are employed by ICER. Through their affiliated institutions, Atlas, Brouwer, Carlson, and Hansen received funding from ICER for the work described in this summary.


Antibodies, Monoclonal/administration & dosage , Antibodies, Monoclonal/economics , Dermatitis, Atopic/drug therapy , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/economics , Antineoplastic Agents, Immunological , Cost-Benefit Analysis , Health Policy , Humans , Quality-Adjusted Life Years , Treatment Outcome
19.
J Immunol Res ; 2021: 2324400, 2021.
Article En | MEDLINE | ID: mdl-34966823

PURPOSE: To evaluate the effectiveness of Janus kinase (JAK) inhibitors for the treatment of patients with autoimmune disease and associated inflammatory ocular diseases. METHODS: We identified relevant literature by screening the MEDLINE, PubMed, and Cochrane databases for randomized controlled trials, cohort studies, case controls, and case reports. RESULTS: Seven studies, including 11 patients, were included in the final systematic analysis. Of the 11 patients, there were 5 cases of juvenile idiopathic arthritis- (JIA-) associated uveitis, 1 case of rheumatoid arthritis- (RA-) associated keratitis, 1 case of RA-associated scleritis, 1 case of psoriasis-associated conjunctivitis, 2 cases of noninfectious scleritis, and 1 case of uveitis with suspected autoimmune disease. None of these 11 patients responded adequately to conventional treatments, including biological agents; these were all refractory cases and switched to JAK inhibitor therapy. Irrespective of whether they were suffering from uveitis, scleritis, or other types of ocular inflammation, all 11 patients showed an improvement to JAK inhibitors without significant side effects. Different types of JAK inhibitors might be associated with different responses when used to treat ocular inflammation. CONCLUSIONS: JAK inhibitors may represent an alternative treatment option for patients with autoimmune ocular inflammation.


Autoimmune Diseases/drug therapy , Eye Diseases/drug therapy , Inflammation/drug therapy , Janus Kinase Inhibitors/therapeutic use , Animals , Autoimmune Diseases/diagnosis , Autoimmune Diseases/etiology , Disease Management , Disease Susceptibility , Eye Diseases/diagnosis , Eye Diseases/etiology , Humans , Inflammation/diagnosis , Inflammation/etiology , Janus Kinase Inhibitors/administration & dosage , Janus Kinase Inhibitors/adverse effects , Molecular Targeted Therapy , Treatment Outcome
20.
Int J Rheum Dis ; 24(12): 1530-1539, 2021 Dec.
Article En | MEDLINE | ID: mdl-34779576

AIM: This study assessed the efficacy and safety of upadacitinib (UPA), in combination with conventional synthetic disease-modifying antirheumatic drugs (csDMARDs), in Chinese, Brazilian, and South Korean patients with active rheumatoid arthritis (RA) and an inadequate response (IR) to csDMARDs. METHODS: Patients on stable csDMARDs were randomized (1:1) to once-daily UPA 15 mg or matching placebo (PBO) for a 12-week, double-blind period. The primary endpoint was the proportion of patients achieving ≥20% improvement in American College of Rheumatology criteria (ACR20) at week 12. RESULTS: In total, 338 patients were randomized and treated, of whom 310 (91.7%) completed the double-blind phase. The study met the primary endpoint of ACR20 at week 12 for UPA 15 mg vs PBO (71.6% vs 31.4%, P < .001), with a treatment difference observed as early as week 1. All ranked and other key secondary endpoints, including more stringent responses such as ACR50, ACR70 (≥50%/70% improvement in ACR criteria), and Disease Activity Score in 28 joints using C-reactive protein <2.6, were met for UPA 15 mg vs PBO. The incidence of serious infections (2.4% vs 0.6%) and herpes zoster (HZ: 1.8% vs 0.6%) was higher with UPA 15 mg vs PBO. There was one case of venous thromboembolism reported in the UPA group. CONCLUSION: UPA 15 mg in combination with csDMARDs demonstrated clinical and functional improvement and an acceptable safety profile over 12 weeks among patients from China, Brazil, and South Korea who had moderately to severely active RA and an IR to csDMARDs.


Arthritis, Rheumatoid/drug therapy , Heterocyclic Compounds, 3-Ring/administration & dosage , Janus Kinase Inhibitors/administration & dosage , Adult , Antirheumatic Agents/therapeutic use , Brazil , China , Double-Blind Method , Drug Therapy, Combination , Female , Heterocyclic Compounds, 3-Ring/adverse effects , Humans , Janus Kinase Inhibitors/adverse effects , Male , Middle Aged , Republic of Korea , Treatment Outcome
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