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Journal of the European Academy of... Nov 2023Vitiligo is a chronic autoimmune skin disorder whose diagnosis is often psychologically upsetting. The efficacy of the available therapies, including topical... (Review)
Review
Vitiligo is a chronic autoimmune skin disorder whose diagnosis is often psychologically upsetting. The efficacy of the available therapies, including topical corticosteroids and topical calcineurin inhibitors, has historically been limited and the management of vitiligo is still challenging. As vitiligo is a chronic disease limited to the skin, topical rather than systemic therapies may be preferable (especially among patients with localised lesions) to avoid the long-term side-effects of the latter. A topical formulation of ruxolitinib, a selective JAK1/2 inhibitor, has recently been approved in the United States for the treatment of non-segmental vitiligo in patients aged >12 years based on data from the phase III TRuE-V1 and TRuE-V2 clinical trials. The aim of this review is to describe the current evidence concerning the efficacy and safety of topical ruxolitinib in the treatment of vitiligo, and discuss issues regarding its use in younger children and pregnant or breastfeeding women, as well as the duration and durability of treatment. The promising results obtained so far suggest that 1.5% ruxolitinib cream is an effective means of treating vitiligo.
Topics: Child; Humans; Female; Vitiligo; Nitriles; Pyrimidines; Calcineurin Inhibitors; Janus Kinase Inhibitors; Treatment Outcome
PubMed: 37147856
DOI: 10.1111/jdv.19162 -
Drugs Dec 2023Gepirone HCL extended-release (gepirone ER; EXXUA™), an oral, selective serotonin (5HT)1A receptor agonist formulated for once-daily administration, has been developed... (Review)
Review
Gepirone HCL extended-release (gepirone ER; EXXUA™), an oral, selective serotonin (5HT)1A receptor agonist formulated for once-daily administration, has been developed by Fabre-Kramer Pharmaceuticals, Inc. for the treatment of psychiatric disorders, including major depressive disorder (MDD). In September 2023, gepirone ER was approved in the USA for the treatment of adults with MDD. This article summarizes the milestones in the development of gepirone ER leading to this first approval for the treatment of adults with MDD.
Topics: Adult; Humans; Depressive Disorder, Major; Antidepressive Agents; Delayed-Action Preparations; Pyrimidines; Serotonin
PubMed: 38079093
DOI: 10.1007/s40265-023-01975-5 -
Journal of Drugs in Dermatology : JDD Jul 2023This article describes the clinical trial, safety, and efficacy of ruxolitinib 1.5% cream or repigmentation in patients with vitiligo.
BACKGROUND
This article describes the clinical trial, safety, and efficacy of ruxolitinib 1.5% cream or repigmentation in patients with vitiligo.
DATA SOURCES
A systematic review was done using ruxolitinib or Opzelura in MEDLINE (PubMed) and EMBASE.
CLINICALTRIALS
gov was used to identify ongoing or unpublished studies.
STUDY SELECTION AND DATA EXTRACTION
Studies included were written in English and relevant to pharmacology, clinical trials, safety, and efficacy.
DATA SYNTHESIS
In two 52-week phase 3 trials, 52.0% of subjects had at least 75% improvement in their Facial Vitiligo Area Scoring Index (F-VASI).
RELEVANCE TO PATIENT CARE AND CLINICAL PRACTICE
Ruxolitinib is a topical Janus kinase (JAK) inhibitor newly approved by the US Food and Drug Administration for repigmentation in patients with vitiligo.
CONCLUSION
Topical ruxolitinib is the first medication approved for repigmentation in patients with vitiligo. It is a safe and effective treatment; however, cost may be a barrier to some patients when prescribing this medication. Trials to compare the efficacy and side effect profile of topical ruxolitinib with other topical treatments are still needed. Grossmann MC, Haidari W, Feldman SR. A Review on the use of topical ruxolitinib for the treatment of vitiligo. J Drugs Dermatol. 2023;22(7):664-667. doi:10.36849/JDD.7268.
Topics: Humans; Vitiligo; Pyrimidines; Nitriles; Pyrazoles; Treatment Outcome; Janus Kinase Inhibitors
PubMed: 37410047
DOI: 10.36849/JDD.7268 -
Clinical Gastroenterology and... Aug 2023
Topics: Humans; Colitis, Ulcerative; Piperidines; Pyrimidines; Janus Kinase Inhibitors
PubMed: 37031712
DOI: 10.1016/j.cgh.2023.03.040 -
Journal of Crohn's & Colitis Aug 2023Tofacitinib has emerged as a new potential treatment for acute severe ulcerative colitis [ASUC]. We conducted a systematic review to assess efficacy, safety and...
BACKGROUND
Tofacitinib has emerged as a new potential treatment for acute severe ulcerative colitis [ASUC]. We conducted a systematic review to assess efficacy, safety and integration in ASUC algorithms.
METHODS
Systematic searching was done in MEDLINE, EMBASE, Cochrane Library and Clinicaltrials.gov until August 17, 2022, including all studies reporting original observations on tofacitinib for ASUC, preferably defined according to Truelove and Witts criteria. The primary outcome was colectomy-free survival.
RESULTS
Of 1072 publications identified, 21 studies were included of which three were ongoing clinical trials. The remaining comprised a pooled cohort originating from 15 case publications [n = 42], a GETAID cohort study [n = 55], a case-control study [n = 40 cases] and a paediatric cohort [n = 11]. Of these 148 reported cases, tofacitinib was used as second-line treatment after steroid failure in previous infliximab failures or third-line after sequential steroid and infliximab or cyclosporine failure, 69 [47%] were female, median age range was 17-34 years and disease duration was 0.7-10 years. Overall, 30-day colectomy-free survival was 85% [n = 123 of 145; n = 3 without colectomy had follow-up <30 days], 90-day 86% [n = 113 of 132; n = 16 follow-up <90 days] and 180-day 69% [n = 77 of 112; n = 36 follow-up <180 days]. Tofacitinib persistence at follow-up was 68-91%, clinical remission 35-69% and endoscopic remission 55%. Adverse events occurred in 22 patients, predominantly being infectious complications other than herpes zoster [n = 13], and resulted in tofacitinib discontinuation in seven patients.
CONCLUSION
Tofacitinib appears promising for treatment of ASUC with high short-term colectomy-free survival among refractory patients who are otherwise deemed to require colectomy. However, large high-quality studies are needed.
Topics: Janus Kinase Inhibitors; Colitis, Ulcerative; Treatment Outcome; Piperidines; Pyrimidines; Humans
PubMed: 36860164
DOI: 10.1093/ecco-jcc/jjad036 -
Drugs Dec 2023Momelotinib (OJJAARA) is an oral Janus kinase 1 and 2 (JAK1/JAK2) and activin A receptor, type I (ACVR1) inhibitor that has been developed for the treatment of... (Review)
Review
Momelotinib (OJJAARA) is an oral Janus kinase 1 and 2 (JAK1/JAK2) and activin A receptor, type I (ACVR1) inhibitor that has been developed for the treatment of myelofibrosis (MF). In September 2023, momelotinib was approved in the USA for the treatment of intermediate or high-risk MF, including primary MF or secondary MF [post-polycythemia vera (PV) and post-essential thrombocythemia (ET)], in adults with anemia. This article summarizes the milestones in the development of momelotinib leading to this first approval for MF.
Topics: Adult; Humans; Janus Kinase 2; Polycythemia Vera; Pyrimidines; Benzamides; Primary Myelofibrosis
PubMed: 37989928
DOI: 10.1007/s40265-023-01964-8 -
Science (New York, N.Y.) Mar 2024Cellular purines, particularly adenosine 5'-triphosphate (ATP), fuel many metabolic reactions, but less is known about the direct effects of pyrimidines on cellular...
Cellular purines, particularly adenosine 5'-triphosphate (ATP), fuel many metabolic reactions, but less is known about the direct effects of pyrimidines on cellular metabolism. We found that pyrimidines, but not purines, maintain pyruvate oxidation and the tricarboxylic citric acid (TCA) cycle by regulating pyruvate dehydrogenase (PDH) activity. PDH activity requires sufficient substrates and cofactors, including thiamine pyrophosphate (TPP). Depletion of cellular pyrimidines decreased TPP synthesis, a reaction carried out by TPP kinase 1 (TPK1), which reportedly uses ATP to phosphorylate thiamine (vitamin B1). We found that uridine 5'-triphosphate (UTP) acts as the preferred substrate for TPK1, enabling cellular TPP synthesis, PDH activity, TCA-cycle activity, lipogenesis, and adipocyte differentiation. Thus, UTP is required for vitamin B1 utilization to maintain pyruvate oxidation and lipogenesis.
Topics: Adenosine Triphosphate; Lipogenesis; Pyrimidines; Pyruvates; Thiamine; Thiamine Pyrophosphate; Uridine Triphosphate; Oxidation-Reduction; Citric Acid Cycle; Protein Kinases; Humans; HeLa Cells; Pyruvate Dehydrogenase Complex
PubMed: 38547260
DOI: 10.1126/science.adh2771 -
Expert Opinion on Pharmacotherapy Apr 2024Myelofibrosis (MF) is a hematologic disease characterized by bone marrow fibrosis, cytopenias, splenomegaly, and constitutional symptoms. Recent years have seen the... (Review)
Review
INTRODUCTION
Myelofibrosis (MF) is a hematologic disease characterized by bone marrow fibrosis, cytopenias, splenomegaly, and constitutional symptoms. Recent years have seen the emergence of novel therapeutic agents, notably ruxolitinib and fedratinib, which target the Janus kinases (JAK) pathway. However, their myelosuppressive effect coupled with the persistence, and even worsening anemia remains a significant challenge, leading usually to treatment discontinuation.
AREAS COVERED
This review focuses on Momelotinib (MMB), a unique JAK inhibitor that has shown promise in MF treatment, particularly in improving anemia. MMB inhibits type 1 kinase activin A receptor or activin receptor-like kinase-2 (ACVR1/ALK2), with consequent rebalancing of the SMAD pathways and reduced transcription of hepcidin. Moreover, it seems that MMB could reduce the serum levels of several inflammatory cytokines responsible for anemia. Clinical trials have demonstrated MMB's efficacy in reducing spleen size, alleviating symptoms, and improving anemia, with a favorable safety profile compared to other JAK inhibitors, both in treatment-naïve and in pre-treated patients.
EXPERT OPINION
Due to its mechanism of action, MMB represents a valuable therapeutic option in MF, addressing the clinical challenge of anemia and potentially improving outcomes for patients with hematologic malignancies. Ongoing research explores MMB's potential in acute myeloid leukemia and combination therapies.
Topics: Humans; Primary Myelofibrosis; Pyrimidines; Animals; Benzamides; Janus Kinase Inhibitors; Anemia; Bridged-Ring Compounds
PubMed: 38623844
DOI: 10.1080/14656566.2024.2343780 -
American Journal of Health-system... Jul 2023
Topics: Humans; Protein Kinase Inhibitors; Pyridines; Pyrimidines; Phosphates
PubMed: 37257154
DOI: 10.1093/ajhp/zxad095 -
European Journal of Neurology Jul 2023Spinal muscular atrophy (SMA) is caused by reduced levels of survival of motor neuron (SMN) protein due to deletions and/or mutations in the SMN1 gene. Risdiplam is an... (Randomized Controlled Trial)
Randomized Controlled Trial
BACKGROUND AND PURPOSE
Spinal muscular atrophy (SMA) is caused by reduced levels of survival of motor neuron (SMN) protein due to deletions and/or mutations in the SMN1 gene. Risdiplam is an orally administered molecule that modifies SMN2 pre-mRNA splicing to increase functional SMN protein.
METHODS
SUNFISH Part 1 was a dose-finding study conducted in 51 individuals with types 2 and 3 SMA aged 2-25 years. A dose-escalation method was used to identify the appropriate dose for the subsequent pivotal Part 2. Individuals were randomized (2:1) to risdiplam or placebo at escalating dose levels for a minimum 12-week, double-blind, placebo-controlled period, followed by treatment for 24 months. The dose selection for Part 2 was based on safety, tolerability, pharmacokinetic, and pharmacodynamic data. Exploratory efficacy was also measured.
RESULTS
There was no difference in safety findings for all assessed dose levels. A dose-dependent increase in blood SMN protein was observed; a median twofold increase was obtained within 4 weeks of treatment initiation at the highest dose level. The increase in SMN protein was sustained over 24 months of treatment. Exploratory efficacy showed improvement or stabilization in motor function. The pivotal dose selected for Part 2 was 5 mg for patients with a body weight ≥20 kg or 0.25 mg/kg for patients with a body weight <20 kg.
CONCLUSIONS
SUNFISH Part 1 demonstrated a twofold increase in SMN protein after treatment with risdiplam. The observed safety profile supported the initiation of the pivotal Part 2 study. The long-term efficacy and safety of risdiplam are being assessed with ongoing treatment.
Topics: Humans; Muscular Atrophy, Spinal; Pyrimidines; Azo Compounds; RNA Splicing; Transcription Factors
PubMed: 35837793
DOI: 10.1111/ene.15499