Nirmatrelvir for Vaccinated or Unvaccinated Adult Outpatients with Covid-19.

BACKGROUND: Nirmatrelvir in combination with ritonavir is an antiviral treatment for mild-to-moderate coronavirus disease 2019 (Covid-19). The efficacy of this treatment in patients who are at standard risk for severe Covid-19 or who are fully vaccinated and have at least one risk factor for severe Covid-19 has not been established. METHODS: In this phase 2-3 trial, we randomly assigned adults who had confirmed Covid-19 with symptom onset within the past 5 days in a 1:1 ratio to receive nirmatrelvir-ritonavir or placebo every 12 hours for 5 days. Patients who were fully vaccinated against Covid-19 and who had at least one risk factor for severe disease, as well as patients without such risk factors who had never been vaccinated against Covid-19 or had not been vaccinated within the previous year, were eligible for participation. Participants logged the presence and severity of prespecified Covid-19 signs and symptoms daily from day 1 through day 28. The primary end point was the time to sustained alleviation of all targeted Covid-19 signs and symptoms. Covid-19-related hospitalization and death from any cause were also assessed through day 28. RESULTS: Among the 1296 participants who underwent randomization and were included in the full analysis population, 1288 received at least one dose of nirmatrelvir-ritonavir (654 participants) or placebo (634 participants) and had at least one postbaseline visit. The median time to sustained alleviation of all targeted signs and symptoms of Covid-19 was 12 days in the nirmatrelvir-ritonavir group and 13 days in the placebo group (P = 0.60). Five participants (0.8%) in the nirmatrelvir-ritonavir group and 10 (1.6%) in the placebo group were hospitalized for Covid-19 or died from any cause (difference, -0.8 percentage points; 95% confidence interval, -2.0 to 0.4). The percentages of participants with adverse events were similar in the two groups (25.8% with nirmatrelvir-ritonavir and 24.1% with placebo). In the nirmatrelvir-ritonavir group, the most commonly reported treatment-related adverse events were dysgeusia (in 5.8% of the participants) and diarrhea (in 2.1%). CONCLUSIONS: The time to sustained alleviation of all signs and symptoms of Covid-19 did not differ significantly between participants who received nirmatrelvir-ritonavir and those who received placebo. (Supported by Pfizer; EPIC-SR ClinicalTrials.gov number, NCT05011513.).

Tofacitinib Reduces Spinal Inflammation in Vertebral Bodies and Posterolateral Elements in Ankylosing Spondylitis: Results from a Phase 2 Trial.

INTRODUCTION: This post hoc analysis of phase 2 trial data assessed the efficacy of tofacitinib on magnetic resonance imaging (MRI) outcomes with the detailed anatomy-based Canada-Denmark (CANDEN) MRI scoring system and evaluated tofacitinib suppression of spinal inflammation in patients with active ankylosing spondylitis (AS). METHODS: Patients with active AS (per modified New York criteria) were randomized 1:1:1:1 to receive tofacitinib 2, 5, or 10 mg twice daily (BID), or placebo, in a 16-week, phase 2, double-blind clinical trial. Spine MRI assessments were performed at baseline and week 12. For post hoc analysis, MRI images from patients receiving tofacitinib 5 or 10 mg BID, or placebo, were re-evaluated by two readers blinded to time point/treatment and assessed by the CANDEN MRI scoring system. Least squares mean changes from baseline to week 12 were reported for CANDEN-specific MRI outcomes, with analysis of covariance used for comparisons of pooled tofacitinib and tofacitinib 5 or 10 mg BID versus placebo. p values without multiplicity adjustment were reported. RESULTS: MRI data from 137 patients were analyzed. At week 12, CANDEN spine inflammation score and vertebral body, posterior elements, corner, non-corner, facet joint, and posterolateral inflammation subscores were significantly reduced with pooled tofacitinib versus placebo (p < 0.0001; except non-corner subscore, p < 0.05). Total spine fat score was numerically increased with pooled tofacitinib versus placebo. CONCLUSIONS: In patients with AS, tofacitinib treatment was associated with significant reductions in MRI scores of spinal inflammation versus placebo, as assessed by the CANDEN MRI scoring system. Tofacitinib reduced inflammation in posterolateral elements of the spine and facet joints, which has not been described previously. TRIAL REGISTRATION: ClinicalTrials.gov registry (NCT01786668).

Association between baseline cardiovascular risk and incidence rates of major adverse cardiovascular events and malignancies in patients with psoriatic arthritis and psoriasis receiving tofacitinib.

Background: Tofacitinib is a Janus kinase inhibitor for the treatment of psoriatic arthritis (PsA) and has been investigated for psoriasis (PsO). Objectives: This post hoc analysis examined baseline cardiovascular (CV) disease risk and its association with the occurrence of major adverse cardiovascular events (MACE) and malignancies in tofacitinib-treated patients with PsA and PsO. Design: Included three phase III/long-term extension (LTE) PsA trials and seven phase II/phase III/LTE PsO trials of patients receiving ⩾ 1 dose of tofacitinib. Methods: Incidence rates (IRs: patients with events/100 patient-years) for MACE and malignancies (excluding non-melanoma skin cancer) were determined in subgroups according to history of atherosclerotic CV disease (ASCVD), baseline 10-year risk of ASCVD (in patients without history of ASCVD), and baseline metabolic syndrome (MetS). Results: For patients with PsA (N = 783) and PsO (N = 3663), respectively, tofacitinib exposure was 2038 and 8950 patient-years (median duration: 3.0 and 2.4 years), and 40.9% and 32.7% had MetS. Excluding missing CV risk profile data, 51/773 (6.6%) and 144/3629 (4.0%) patients had history of ASCVD, and in patients without history of ASCVD, around 20.0% had intermediate/high baseline 10-year ASCVD risk. For PsA and PsO, IRs of MACE were greatest in those with history of ASCVD or high baseline 10-year ASCVD risk. For PsA, five of six patients with MACE had baseline MetS. Malignancy IRs in patients with PsA were greatest in those with intermediate/high baseline 10-year ASCVD risk. Of these, eight of nine patients with malignancies had baseline MetS. In the PsO cohort, IR of malignancies was notably greater with high versus low/borderline/intermediate baseline 10-year ASCVD risk. Conclusion: In tofacitinib-treated patients with PsA/PsO, increased ASCVD risk and baseline MetS were associated with higher IRs for MACE and malignancies. Our results support assessing CV risk in patients with PsA/PsO and suggest enhanced cancer monitoring in those with increased ASCVD risk. Registration ClinicalTrialsgov: NCT01877668/NCT01882439/NCT01976364/NCT00678210/NCT01710046/NCT01241591/NCT01186744/NCT01276639/NCT01309737/NCT01163253. Plain Language Summary: People who have psoriatic arthritis or psoriasis may have more heart-related problems and cancer if they have a higher risk of cardiovascular disease: A study in people with psoriatic arthritis or psoriasis receiving tofacitinib Why was this study done? • People with psoriatic arthritis (PsA) and psoriasis (PsO) are more likely than the general population to have a disease affecting the heart and blood vessels [cardiovascular (CV) disease].• People who are more likely to have CV disease may also be more likely to have certain types of cancer.• Tofacitinib is a medicine to treat people with PsA and has been tested in people with PsO.• We wanted to know if the risk of CV disease affects the number of heart-related problems (including heart attack, stroke, or death) and cancer in people with PsA and PsO. What did the researchers do? • We used results from 10 clinical trials.• In these trials, people with PsA and PsO were taking tofacitinib 5 or 10 mg twice a day.• After the trials had ended, we measured people's risk of CV disease using a risk calculator. This risk calculator showed if they had a low, borderline, intermediate, or high risk of CV disease over the next 10 years. We also checked if they had had CV disease before treatment.• We checked if people had a group of conditions linked to CV disease: diabetes, high blood pressure, and obesity.• We counted the cases of heart-related problems and cancer in people once they started taking tofacitinib. What did the researchers find? In people with PsA and PsO taking tofacitinib:• There were more cases of heart-related problems and cancer in people who had intermediate or high risk of CV disease.• There were more cases of heart-related problems in people who had had CV disease before.• More people with diabetes, high blood pressure, and obesity had heart-related problems and cancer than people without those conditions. What do the findings mean? • It is important to measure risk and assess history of CV disease in people with PsA and PsO, including those taking tofacitinib.• We should test for cancer in people with high risk of CV disease.

Effect of tofacitinib on dactylitis and patient-reported outcomes in patients with active psoriatic arthritis: post-hoc analysis of phase III studies.

BACKGROUND: Tofacitinib is an oral Janus kinase inhibitor for the treatment of psoriatic arthritis (PsA). This post-hoc analysis of two phase III studies in patients with PsA treated with tofacitinib assessed dactylitis by location, and the impact on patient-reported outcomes (PROs). METHODS: Patients received tofacitinib 5 or 10 mg twice daily (BID), or placebo. Endpoints included change from baseline in Dactylitis Severity Score (DSS), proportions of patients with dactylitis, Psoriatic Arthritis Disease Activity Score (PASDAS), and PROs (Health Assessment Questionnaire-Disability Index [HAQ-DI]; Functional Assessment of Chronic Illness Therapy-Fatigue [FACIT-F]; Short Form-36 Health Survey [SF-36] Physical Component Summary [PCS], Mental Component Summary [MCS], and physical functioning [PF]; arthritis pain; and Work Limitations Questionnaire [WLQ]). Descriptive statistics were generated by visit and treatment. Change from baseline in PROs were evaluated by multivariate linear regression. RESULTS: The analysis included 373/337 patients with baseline DSS > 0/DSS = 0. Regardless of location, DSS improvements in patients with DSS > 0 were greater from month 1 with tofacitinib (10 mg BID) versus placebo. For patients with DSS > 0/DSS = 0, both doses of tofacitinib led to mean dactylitis presence ≤ 15%/< 2% for all digits at month 6, and PASDAS (by dactylitis location) was lower versus placebo at month 3. Dactylitis location was not significantly associated with change from baseline in PROs. CONCLUSION: Tofacitinib resulted in sustained improvements in dactylitis irrespective of location, with minimal emergence of new dactylitis. Trial registration NCT01877668; NCT01882439.

Effect of tofacitinib on pain, fatigue, health-related quality of life and work productivity in patients with active ankylosing spondylitis: results from a phase III, randomised, double-blind, placebo-controlled trial.

BACKGROUND: Ankylosing spondylitis (AS) impacts quality of life. We assessed patient-reported outcomes (PROs), pain, fatigue, health-related quality of life (HRQoL) and work productivity in a phase III trial of tofacitinib. METHODS: Adults with AS and with inadequate response/intolerance to ≥2 non-steroidal anti-inflammatory drugs received tofacitinib 5 mg twice daily or placebo for 16 weeks. Afterwards, all received open-label tofacitinib until week 48. Change from baseline to week 48 was determined for PROs: total back pain; nocturnal spinal pain; Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) overall spinal pain (Q2); Functional Assessment of Chronic Illness Therapy-Fatigue; BASDAI fatigue (Q1); AS Quality of Life (ASQoL); Short Form-36 Health Survey Version 2 (SF-36v2); EuroQoL-Five Dimension-Three Level health profile and Visual Analogue Scale; and the Work Productivity and Activity Impairment (WPAI) questionnaire. Improvements from baseline ≥minimum clinically important difference, and scores ≥normative values at week 16 were evaluated. RESULTS: In 269 randomised and treated patients, at week 16, there were greater least squares mean improvements from baseline with tofacitinib 5 mg twice daily versus placebo in BASDAI overall spinal pain (-2.85 vs -1.34), BASDAI fatigue (-2.36 vs -1.08), ASQoL (-4.03 vs -2.01) and WPAI overall work impairment (-21.49 vs -7.64) (all p<0.001); improvements continued/increased to week 48. Improved spinal pain with tofacitinib was seen by week 2. Patients receiving tofacitinib reported clinically meaningful PRO improvements at week 16. Percentages with PRO scores ≥normative values at week 16 were greater with tofacitinib in SF-36v2 Physical Component Summary, physical functioning and bodily pain domains (p≤0.05). CONCLUSIONS: In patients with AS, treatment with tofacitinib 5 mg twice daily resulted in clinically meaningful improvements in pain, fatigue, HRQoL and work productivity versus placebo to week 16, which were sustained to week 48. TRIAL REGISTRATION NUMBER: NCT03502616.

Frequency and Duration of Early Non-serious Adverse Events in Patients with Rheumatoid Arthritis and Psoriatic Arthritis Treated with Tofacitinib.

INTRODUCTION: Tofacitinib is an oral Janus kinase inhibitor for the treatment of rheumatoid arthritis (RA) and psoriatic arthritis (PsA). This post hoc analysis assessed frequency or duration of early select non-serious adverse events (AEs; excluding infections), and their impact on treatment discontinuation, in patients with RA or PsA treated with tofacitinib 5 or 10 mg twice daily, or placebo. METHODS: Data were pooled from five phase 3 and one phase 3b/4 studies in patients with moderate-to-severe RA, and two phase 3 studies in patients with active PsA. Select all-causality, non-serious AEs, reported to month 3 (placebo-controlled period), were headache, diarrhea, nausea, vomiting, and gastric discomfort (including dyspepsia, gastritis, epigastric discomfort, and abdominal discomfort or pain); incidence rates (unique patients with events per 100 patient-years of follow-up), duration of, and discontinuations due to these non-serious AEs were reported. RESULTS: We analyzed 3871 and 710 patients with RA and PsA, respectively. Incidence of non-serious AEs to month 3 was generally similar with tofacitinib and placebo. The most frequent non-serious AEs were headache and diarrhea with tofacitinib, and dyspepsia, nausea, and headache with placebo. Most events were mild or moderate in severity, lasting ≤ 4 weeks. Permanent discontinuations due to non-serious AEs were not observed in patients with PsA, and were < 1.0% in patients with RA across treatment groups. The most frequent cause of temporary discontinuation across all groups was gastric discomfort (0.3-0.8%). CONCLUSIONS: Non-serious AE incidence was generally similar in patients with RA or PsA receiving tofacitinib or placebo. Most events were mild or moderate and generally resolved within 4 weeks. TRIAL REGISTRATION: ClinicalTrials.gov identifiers: NCT00960440; NCT00847613; NCT00814307; NCT00856544; NCT00853385; NCT01877668; NCT01882439; NCT02187055.

Tofacitinib is a medicine that can be taken by patients to treat rheumatoid arthritis (RA) or psoriatic arthritis (PsA). Serious side effects that might occur in patients taking tofacitinib are more frequently discussed than the mild, non-serious side effects that patients might consider to be more of a 'nuisance', which often occur shortly (< 3 months) after starting treatment. Here we looked at patients with RA or PsA who were taking tofacitinib or placebo (no medicine) during clinical trials, to find out how often they had certain non-serious side effects, how long they lasted, and whether they caused the patients to stop taking their medication. A similar number of patients with RA or PsA taking tofacitinib or placebo had non-serious side effects. The most common non-serious side effects in patients taking tofacitinib were a headache and diarrhea. The most common non-serious side effects in patients taking placebo (no medicine) were indigestion, a feeling of sickness, and/or headache. Most non-serious side effects were mild or moderate and stopped within about 4 weeks. Fewer than one in every 100 patients with RA, and no patients with PsA, stopped taking their medication because of non-serious side effects. Most patients who stopped taking their medication did so due to a feeling of gastrointestinal (stomach) discomfort.

Tofacitinib for the treatment of ankylosing spondylitis: a phase III, randomised, double-blind, placebo-controlled study.

OBJECTIVE: To assess the efficacy/safety of tofacitinib in adult patients with active ankylosing spondylitis (AS). METHODS: This phase III, randomised, double-blind, placebo-controlled study enrolled patients aged ≥18 years diagnosed with active AS, meeting the modified New York criteria, with centrally read radiographs, and an inadequate response or intolerance to ≥2 non-steroidal anti-inflammatory drugs. Patients were randomised 1:1 to receive tofacitinib 5 mg two times per day or placebo for 16 weeks. After week 16, all patients received open-label tofacitinib until week 48. The primary and key secondary endpoints were Assessment of SpondyloArthritis international Society ≥20% improvement (ASAS20) and ≥40% improvement (ASAS40) responses, respectively, at week 16. Safety was assessed throughout. RESULTS: 269 patients were randomised and treated: tofacitinib, n=133; placebo, n=136. At week 16, the ASAS20 response rate was significantly (p<0.0001) greater with tofacitinib (56.4%, 75 of 133) versus placebo (29.4%, 40 of 136), and the ASAS40 response rate was significantly (p<0.0001) greater with tofacitinib (40.6%, 54 of 133) versus placebo (12.5%, 17 of 136). Up to week 16, with tofacitinib and placebo, respectively, 73 of 133 (54.9%) and 70 of 136 (51.5%) patients had adverse events; 2 of 133 (1.5%) and 1 of 136 (0.7%) had serious adverse events. Up to week 48, with tofacitinib, 3 of 133 (2.3%) patients had adjudicated hepatic events, 3 of 133 (2.3%) had non-serious herpes zoster, and 1 of 133 (0.8%) had a serious infection; with placebo→tofacitinib, 2 (1.5%) patients had non-serious herpes zoster. There were no deaths, malignancies, major adverse cardiovascular events, thromboembolic events or opportunistic infections. CONCLUSIONS: In adults with active AS, tofacitinib demonstrated significantly greater efficacy versus placebo. No new potential safety risks were identified. TRIAL REGISTRATION NUMBER: NCT03502616.

Tofacitinib as monotherapy following methotrexate withdrawal in patients with psoriatic arthritis previously treated with open-label tofacitinib plus methotrexate: a randomised, placebo-controlled substudy of OPAL Balance.

BACKGROUND: Tofacitinib is an oral Janus kinase inhibitor for the treatment of psoriatic arthritis, rheumatoid arthritis, and ulcerative colitis. This study evaluated the efficacy and safety of tofacitinib 5 mg twice daily monotherapy after methotrexate withdrawal. METHODS: OPAL Balance was an open-label, long-term extension study of tofacitinib in patients with psoriatic arthritis who participated in the OPAL Broaden and OPAL Beyond phase 3 studies. This 12-month, randomised, double-blind, placebo-controlled, methotrexate withdrawal substudy (50 centres, 14 countries) included patients from OPAL Balance who completed tofacitinib treatment for 24 months or more (≥3 months' stable tofacitinib 5 mg twice daily) and were receiving methotrexate (7·5-20 mg/week). Patients were blindly randomised (1:1) using interactive response technology and received open-label tofacitinib 5 mg twice daily with either placebo (tofacitinib 5 mg twice daily plus placebo group) or continued methotrexate (tofacitinib 5 mg twice daily plus methotrexate group). Patients were masked to placebo or methotrexate, with identical capsules used. Coprimary endpoints were changes from substudy baseline in psoriatic arthritis disease activity score (PASDAS) and health assessment questionnaire-disability index (HAQ-DI) at month 6 in all randomised patients with one or more substudy drug dose. Safety was assessed throughout. No specific statistical hypothesis (either superiority or non-inferiority) was tested. The study (OPAL Balance) is registered with ClinicalTrials.gov (NCT01976364) and is complete. FINDINGS: Between Oct 30, 2017, and May 20, 2019, 180 patients from OPAL Balance who were eligible for the substudy were randomly assigned to treatment (90 patients received tofacitinib 5 mg twice daily plus placebo and 89 patients assigned to tofacitinib plus methotrexate; one patient was not treated because of randomisation error). At month 6, least squares mean (LSM) changes in PASDAS were 0·23 (SE 0·08) for tofacitinib 5 mg twice daily plus placebo and 0·14 (0·08) for tofacitinib 5 mg twice daily plus methotrexate (treatment difference LSM 0·09 [95% CI -0·13 to 0·31]), and changes in HAQ-DI were 0·04 (0·03) and 0·02 (0·03), respectively (treatment difference 0·03 [-0·05 to 0·10]). Rates of adverse events, discontinuations because of adverse events, adverse events of special interest, and laboratory changes were generally similar between treatment groups, although liver enzyme elevations were more common with tofacitinib 5 mg twice daily plus methotrexate than tofacitinib 5 mg twice daily plus placebo. Flares of worsening symptoms was reported in one (1%) of 90 patients in the tofacitinib 5 mg twice daily plus placebo group (recorded as psoriatic arthropathy). INTERPRETATION: Some patients with psoriatic arthritis who are stable on tofacitinib 5 mg twice daily with background methotrexate might be able to discontinue methotrexate without clinically meaningful changes in disease activity and safety. FUNDING: Pfizer Inc.

Safety and efficacy of tofacitinib up to 48 months in patients with active psoriatic arthritis: final analysis of the OPAL Balance long-term extension study.

BACKGROUND: Tofacitinib is an oral Janus kinase inhibitor for the treatment of psoriatic arthritis. Here we report the final analysis of Oral Psoriatic Arthritis Trial (OPAL) Balance, a 36-month long-term extension study, with a 12-month methotrexate withdrawal substudy, that assessed tofacitinib safety, tolerability, and efficacy in patients with active psoriatic arthritis. METHODS: For this open-label, long-term extension study, which was run at 124 centres in 16 countries, eligible patients had participated in the OPAL Broaden or OPAL Beyond phase 3 studies. Patients could enter OPAL Balance up to 3 months after completing one of the qualifying studies or discontinuing for reasons other than an adverse event related to study drug. In OPAL Balance, patients received open-label tofacitinib 5 mg twice daily, with increases to 10 mg twice daily for inadequate symptom control allowed from month 1, and reductions to 5 mg twice daily allowed thereafter for safety. Specific conventional synthetic disease-modifying antirheumatic drugs could be continued concomitantly. The primary endpoints were incidence and severity of adverse events, the incidence of laboratory abnormalities, and changes from baseline in laboratory parameters. Participants who were eligible could enter the randomised, double-blind, methotrexate withdrawal substudy (open-label tofacitinib 5 mg twice daily plus either masked placebo or masked methotrexate); safety data from which are included here (up to month 48). Efficacy was reported up to month 36 (substudy data excluded). The risk period for safety outcomes was the time from treatment exposure to the last dose plus 28 days or date of last observation. OPAL Balance is registered with ClinicalTrials.gov (NCT01976364) and is now complete. FINDINGS: Between Feb 17, 2014, and March 28, 2016, 686 patients were enrolled and given tofacitinib 5 mg or 10 mg twice daily (179 patients were treated in the substudy and 453 [66%] of 686 completed the long-term extension study or substudy; mean treatment duration 794·6 days [SD 329·2] in long-term extension study, 879·0 days [396·6] in long-term extension study plus substudy). The mean age of participants in the all tofacitinib group was 48·8 years (SD 11·8) and 370 (54%) of 686 participants were female. Up to month 48, 574 (84%) of 686 participants reported all-cause adverse events, 115 (17%) reported serious adverse events, and 78 (11%) discontinued due to an adverse event. Six patients died, one within the risk period (incidence of 0·1 patients with events [95% CI 0·0-0·3] per 100 person-years). The incidences of adverse events of special interest, reported as number of patients with events per 100 person-years, included: 1·7 (1·2-2·5) for herpes zoster (non-serious and serious); 1·0 (0·6-1·6) for serious infections; 0·4 (0·1-0·8) for opportunistic infections; 0·7 (0·4-1·2) for malignancies (excluding non-melanoma skin cancer [NMSC]); 0·9 (0·5-1·5) for NMSC; 0·2 (0·1-0·6) for major adverse cardiovascular events; 0·1 (0·0-0·3) for pulmonary embolism; and 0·4 (0·1-0·8) for arterial thromboembolism. No deep vein thromboses occurred. Laboratory parameter changes were as expected with treatment. Efficacy was sustained up to month 36. INTERPRETATION: This analysis supports the long-term safety (up to 48 months) and efficacy (up to 36 months) of tofacitinib in patients with psoriatic arthritis, which were consistent with previous phase 3 studies. FUNDING: Pfizer.

Safety and Efficacy of Tofacitinib in Patients with Active Psoriatic Arthritis: Interim Analysis of OPAL Balance, an Open-Label, Long-Term Extension Study.

INTRODUCTION: Tofacitinib is an oral Janus kinase inhibitor for the treatment of psoriatic arthritis (PsA). We report the interim safety, tolerability, and efficacy of tofacitinib in PsA patients in OPAL Balance, a 3-year, open-label, long-term extension study (data cut-off: August 2017; database not locked, data may change). METHODS: Eligible patients from two phase (P) 3 (P3) tofacitinib PsA studies (OPAL Broaden, NCT01877668; OPAL Beyond, NCT01882439) entered OPAL Balance ≤ 3 months after completing the P3 study or discontinuing for reasons other than study-drug-related adverse events (AEs). Patients received open-label tofacitinib 5 mg twice daily (BID), with adjustments to 10 mg BID permitted post-month (M) 1. Certain concomitant conventional synthetic disease-modifying antirheumatic drugs were allowed. Primary endpoints were incidence/severity of AEs and laboratory abnormalities, and changes from baseline in laboratory parameters (reported up to M36 and M30, respectively). Efficacy (clinical/patient-reported outcomes) was reported through M30. RESULTS: A total of 686 patients were treated; at data cut-off, 68.2% remained in the study. Mean (range) treatment duration was 641 (1-1032) days; total treatment duration was 1153.2 patient-years. By M36, 79.6, 13.8, and 8.6% of patients reported AEs, serious AEs, and discontinuations due to AEs, respectively. Five deaths occurred; one within the risk period (incidence rate [IR; patients with events/100 patient-years] 0.1). IRs for AEs of special interest were: all (non-serious and serious) herpes zoster, 1.7; serious infections, 0.9; opportunistic infections, 0.3 (all disseminated/multi-dermatomal herpes zoster); malignancies excluding non-melanoma skin cancer (NMSC), 0.8; NMSC, 1.0; major adverse cardiovascular events, 0.3; pulmonary embolisms, 0.1; and arterial thromboembolisms, 0.4. No patients had deep vein thrombosis. Alanine aminotransferase and aspartate aminotransferase levels were elevated ≥ 3-fold the upper limit of normal in 4.0 and 2.2% of patients, respectively. Changes in laboratory parameters were generally stable over time, although lymphocyte counts decreased slightly. Efficacy was maintained through M30. CONCLUSIONS: In this interim analysis of OPAL Balance, tofacitinib safety and efficacy in patients with PsA appeared to be consistent with those of the P3 studies. Efficacy was maintained over time. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT01976364.

In many countries, tofacitinib is an approved medicine that can be used to treat psoriatic arthritis (PsA). In the study reported here (OPAL Balance), adult patients with PsA took tofacitinib for up to 3 years. We report a planned interim analysis, i.e., an analysis of information collected before the study finished. This early information suggests that the safety of tofacitinib, and how well it improved symptoms and quality of life (efficacy), was similar in this long study as in shorter studies. Information from the finished study will be reported later. OPAL Balance started on 17 February 2014. This interim analysis includes information collected by 31 August 2017. Before joining, patients had finished a 6-month or 12-month tofacitinib study (OPAL Broaden or OPAL Beyond). Patients in OPAL Balance took a 5 mg tofacitinib pill twice a day, but if PsA symptoms did not improve after 1 month, they could take a 10 mg pill twice a day. They could also take other medicines (including methotrexate or corticosteroids). Of the 686 patients who took tofacitinib, 546 (80%) experienced side effects over 3 years. These were considered serious for 95 patients (14%) and caused 59 patients (9%) to leave the study. Five patients died from causes not related to tofacitinib. Known tofacitinib side effects, including shingles (herpes zoster), serious infections (needing hospitalization), infections in patients with weakened immune systems, cancer, heart (cardiovascular) problems, and vein blockages (embolisms), were each reported by fewer than 20 patients. Most blood test results and tofacitinib efficacy were stable over 2.5 years.

Tofacitinib is associated with attainment of the minimally important reduction in axial magnetic resonance imaging inflammation in ankylosing spondylitis patients.

Objectives: Minimally important changes (MICs) for SPondyloArthritis Research Consortium of Canada (SPARCC) MRI scores are ⩾2.5 for SI joint and ⩾5 for spine. This post hoc analysis assessed achievement of MIC in SPARCC scores in biologic-naïve patients with AS treated with tofacitinib or placebo, and correlation with clinical responses. Methods: Adult AS patients in a 12-week phase 2 study (n = 207) were randomized 1: 1: 1: 1 to tofacitinib 2, 5 or 10 mg twice daily (BID) or placebo. MIC in SPARCC SI joint and spine scores were assessed for patients with available MRI data (N = 164; 79%). Clinical endpoints at week 12, including Assessment of SpondyloArthritis international Society 20% improvement (ASAS20), were compared between patients achieving/not achieving MIC. Results: A greater proportion of patients achieved MIC with tofacitinib 2, 5 and 10 mg BID vs placebo for SI joint (28.6, 38.6, 29.6 vs 11.8%) and spine scores (29.3, 36.4, 40.9 vs 11.8%). Generally, a greater proportion of patients treated with tofacitinib 2, 5 and 10 mg BID or placebo, respectively, who achieved MIC for SI joint and spine scores achieved ASAS20 (SI joint: 75.0, 88.2, 69.2, 75.0%; spine: 91.7, 85.7, 72.2, 75.0%) vs patients who did not achieve MIC (SI joint: 51.7, 84.0, 58.1, 48.3%; spine: 46.4, 85.7, 53.8, 48.3%). Numerically greater responses were seen in those patients achieving vs not achieving MIC across a range of other efficacy assessments. Conclusion: Approximately one-third of tofacitinib-treated AS patients experienced clinically meaningful reductions in spinal MRI inflammation at week 12. Patients achieving MIC for MRI inflammation had greater clinical response.

In Vitro and In Vivo Investigation of Potential for Complex CYP3A Interaction for PF-00251802 (Dagrocorat), a Novel Dissociated Agonist of the Glucocorticoid Receptor.

The dissociated agonists of the glucocorticoid receptor are a novel class of agents in clinical development for rheumatoid arthritis. PF-04171327 (fosdagrocorat) is a phosphate ester prodrug of PF-00251802 (dagrocorat), a selective high-affinity partial agonist of the glucocorticoid receptor, which is further metabolized to PF-04015475. This study evaluated the cytochrome P450 (CYP)-mediated drug-drug interaction (DDI) potential of PF-00251802 and PF-04015475 in vitro and used model-based prediction approaches to estimate clinical impact. PF-00251802 is a reversible inhibitor of several CYPs, but modeling has suggested no clinically relevant interaction. PF-00251802 and PF-04015475 are time-dependent inhibitors and inducers of CYP3A in vitro; PF-00251802 is also a time-dependent inhibitor of CYP2D6. Model-based prediction suggested the potential for weak inhibition of CYP3A in vivo. A clinical DDI study was conducted with midazolam, a sensitive CYP3A substrate. A phase 1 open-label, multiple-dose study evaluated the effect of PF-04171327 on midazolam pharmacokinetics and safety in 12 healthy volunteers. Administration of midazolam alone or concomitantly with PF-04171327 resulted in equivalent pharmacokinetic profiles (AUCinf , 21.17 vs 20.28 ng·h/mL, respectively), indicating that PF-04171327 had no net effect on CYP3A activity in vivo. These findings support the further development of PF-00251802 and PF-04171327 as potential treatments for patients with rheumatoid arthritis (NCT00987038).

Improved disease activity with fosdagrocorat (PF-04171327), a partial agonist of the glucocorticoid receptor, in patients with rheumatoid arthritis: a Phase 2 randomized study.

AIM: To assess efficacy and safety of fosdagrocorat (PF-04171327), a potential dissociated agonist of the glucocorticoid receptor, in rheumatoid arthritis (RA) patients. METHODS: This multicenter, double-blind, parallel-group, active- and placebo-controlled Phase 2 study (NCT00938587) randomized 86 patients (1 : 1 : 1 : 1) to receive fosdagrocorat 10 mg, fosdagrocorat 25 mg, prednisone 5 mg or placebo, all with stable background methotrexate therapy. The primary outcome was change from baseline in Disease Activity Score of 28 joints (DAS28-4[C-reactive protein (CRP)]) after 2 weeks of treatment. Secondary outcomes included American College of Rheumatology (ACR) response rates, change from baseline in ACR core components and Health Assessment Questionnaire Disability Index. RESULTS: At week 2, improvements from baseline in DAS28-4(CRP) with fosdagrocorat 10 and 25 mg, prednisone 5 mg and placebo were -1.69, -2.22, -1.17 and -0.96, respectively, and were statistically significantly greater for both fosdagrocorat doses versus placebo (P < 0.05) and for fosdagrocorat 25 mg versus prednisone 5 mg (P < 0.001). The effects of fosdagrocorat on secondary outcomes were generally consistent with those observed for the primary outcome. Adverse events (AEs) were reported for eight (38%), three (14%), four (19%) and 12 (55%) patients treated with fosdagrocorat 10 and 25 mg, prednisone 5 mg and placebo, respectively. Most AEs were mild in severity. Four patients discontinued treatment due to AEs (fosdagrocorat 10 mg, n = 2; placebo, n = 2). There were no serious AEs. CONCLUSION: Fosdagrocorat 10 and 25 mg demonstrated efficacy in improving signs and symptoms in RA patients, with manageable AEs. Additional studies are needed to assess the longer-term safety and efficacy of fosdagrocorat.

Tofacitinib in patients with ankylosing spondylitis: a phase II, 16-week, randomised, placebo-controlled, dose-ranging study.

OBJECTIVES: To compare efficacy and safety of various doses of tofacitinib, an oral Janus kinase inhibitor, with placebo in patients with active ankylosing spondylitis (AS, radiographic axial spondyloarthritis). METHODS: In this 16-week (12-week treatment, 4-week washout), phase II, multicentre, dose-ranging trial, adult patients with active AS were randomised (N=51, 52, 52, 52, respectively) to placebo or tofacitinib 2, 5 or 10 mg twice daily. The primary efficacy endpoint was Assessment of SpondyloArthritis International Society 20% improvement (ASAS20) response rate at week 12. Secondary endpoints included objective measures of disease activity, patient-reported outcomes and MRI of sacroiliac joints and spine. Safety was monitored. RESULTS: Emax model analysis of the primary endpoint predicted a tofacitinib 10 mg twice daily ASAS20 response rate of 67.4%, 27.3% higher than placebo. Supportive normal approximation analysis demonstrated tofacitinib 5 mg twice daily ASAS20 response rate significantly higher than placebo (80.8% vs 41.2%; p<0.001); tofacitinib 2 and 10 mg twice daily demonstrated greater response rate than placebo (51.9% and 55.8%, respectively; not significant). Secondary endpoints generally demonstrated greater improvements with tofacitinib 5 and 10 mg twice daily than placebo. Objective (including MRI) endpoints demonstrated clear dose response. Adverse events were similar across treatment groups with no unexpected safety findings. Dose-dependent laboratory outcome changes returned close to baseline by week 16. CONCLUSIONS: Tofacitinib 5 and 10 mg twice daily demonstrated greater clinical efficacy versus placebo in reducing signs, symptoms and objective endpoints of active AS in adult patients with a similar 12-week safety profile as reported in other indications. TRIAL REGISTRATION NUMBER: NCT01786668.

Safety and pharmacodynamic dose response of short-term prednisone in healthy adult subjects: a dose ranging, randomized, placebo-controlled, crossover study.

BACKGROUND: Glucocorticoids (GCs), such as prednisone, are the standard of care for several inflammatory and immunologically mediated diseases, but their chronic systemic administration is severely limited by serious adverse effects that are both dose and time dependent. Short-term treatment (7-14 days) with oral prednisone is used for many acute inflammatory and allergic conditions. This study was conducted to characterize the safety and pharmacodynamic (PD) dose-response of a 7-day course of oral prednisone on biomarkers of GC receptor agonism. METHODS: In this randomized, single-blind, placebo-controlled, crossover study (A9001309), 37 healthy subjects received placebo or a prednisone dose from 2.5-60 mg daily over 7 days in each of three treatment periods. White blood cell counts and plasma samples for measuring cortisol, osteocalcin and procollagen type 1 N-propeptide (P1NP) were obtained at 2, 4, 8, and 12 h post-dose on Day 1, immediately prior to dosing on Days 1, 2, and 4, and at nominal dosing time on Days 0 and 8. Urine samples for urinary N-terminal cross-linked telopeptide of type 1 collagen (uNTX) were collected on Days 0, 1, 2, 4, and 8. Serum samples for adiponectin were obtained prior to dosing on days 0, 1, 4 and 8. RESULTS: Daily doses of prednisone up to 60 mg resulted in dose- and time-dependent decreases in plasma osteocalcin, plasma P1NP, serum cortisol, and absolute blood eosinophil counts. Absolute blood neutrophil counts increased, while blood lymphocyte counts rebounded to an increased level following an initial rapid decrease after dosing. An increase was observed for uNTX and adiponectin. The incidence of adverse effects with prednisone was not dose related, and nervous system disorders, mainly headache, were the most frequently reported adverse effects. CONCLUSIONS: This characterization provides important and relevant information on safety and PD responses of short-term prednisone dosing over the commonly-used clinical dose range, and also provides a reference for early clinical development of dissociated agents targeting a differentiated PD profile. TRIAL REGISTRATION NUMBER: NCT02767089 (retrospectively registered: 21 April 2016).

Maraviroc, a chemokine receptor-5 antagonist, fails to demonstrate efficacy in the treatment of patients with rheumatoid arthritis in a randomized, double-blind placebo-controlled trial.

INTRODUCTION: The purpose of this study was to determine whether maraviroc, a human CC chemokine receptor 5 (CCR5) antagonist, is safe and effective in the treatment of active rheumatoid arthritis (RA) in patients on background methotrexate (MTX). METHODS: This phase IIa study comprised two distinct components: an open-label safety study of the pharmacokinetics (PK) of MTX in the presence of maraviroc, and a randomized, double-blind, placebo-controlled, proof-of-concept (POC) component. In the PK component, patients were randomized 1:1 to receive maraviroc 150 or 300 mg twice daily (BID) for four weeks. In the POC component, patients were randomized 2:1 to receive maraviroc 300 mg BID or placebo for 12 weeks. Patients were not eligible for inclusion in both components. RESULTS: Sixteen patients were treated in the safety/PK component. Maraviroc was well tolerated and there was no evidence of drug-drug interaction with MTX. One hundred ten patients were treated in the POC component. The study was terminated after the planned interim futility analysis due to lack of efficacy, at which time 59 patients (38 maraviroc; 21 placebo) had completed their week 12 visit. There was no significant difference in the number of ACR20 responders between the maraviroc (23.7%) and placebo (23.8%) groups (treatment difference -0.13%; 90% CI -20.45, 17.70; P = 0.504). The most common all-causality treatment-emergent adverse events in the maraviroc group were constipation (7.8%), nausea (5.2%), and fatigue (3.9%). CONCLUSIONS: Maraviroc was generally well tolerated over 12 weeks; however, selective antagonism of CCR5 with maraviroc 300 mg BID failed to improve signs and symptoms in patients with active RA on background MTX. TRIAL REGISTRATION: ClinicalTrials.gov: NCT00427934.

Linezolid for the treatment of methicillin-resistant Staphylococcus aureus infections in children.

BACKGROUND: Infections caused by methicillin-resistant Staphylococcus aureus (MRSA) are becoming increasingly prevalent. Linezolid is effective and well-tolerated in the treatment of adults with MRSA infections. OBJECTIVE: To evaluate the clinical efficacy and safety of iv/oral linezolid in children with MRSA infections. METHODS: Data were obtained from two independent clinical trials. In an outpatient trial children (5 to 17 years of age) with uncomplicated skin and skin structure infections (SSSIs) were treated with linezolid or cefadroxil. In an inpatient trial hospitalized children (0 to 11 years of age) with pneumonia, bacteremia or complicated SSSI caused by resistant Gram-positive pathogens were administered iv linezolid with the option to switch to oral suspension (patients >90 days of age) or iv vancomycin. A subset of patients with MRSA infections from the two clinical trials is analyzed herein. RESULTS: In the outpatient trial children with skin infections caused by MRSA were treated with linezolid (15 patients) and cefadroxil (10 patients). In the microbiologically evaluable population, the clinical cure rate was 92.3% in the linezolid group and 85.7% in the cefadroxil group (P = 0.64). The pathogen eradication rate for MRSA was 92.3 and 85.7% in the linezolid and cefadroxil groups, respectively (P = 0.64). There were very few adverse events or drug-related adverse events and no serious adverse events in the outpatient trial. In the inpatient trial 20 children treated with linezolid and 14 treated with vancomycin had infections caused by MRSA. In the microbiologically evaluable population, the clinical cure rate was 94.1% in the linezolid group and 90.0% in the vancomycin group (P = 0.69). Pathogen eradication rates were 88.2 and 90.0% for the linezolid and vancomycin groups, respectively (P = 0.89). Susceptibility patterns of the MRSA isolates showed distinct patterns between the outpatient and inpatient trials. In the inpatient trial fewer patients in the linezolid group had drug-related adverse events than did those in the vancomycin group (20% vs. 43%; P = 0.15). CONCLUSIONS: Intravenous/oral linezolid is effective and well-tolerated in children with MRSA infections.

Linezolid versus cefadroxil in the treatment of skin and skin structure infections in children.

BACKGROUND: Skin and skin structure infections are common reasons for visits to pediatricians, accounting for up to 18%. Staphylococcus aureus and Streptococcus pyogenes are the most frequently isolated Gram-positive pathogens in uncomplicated skin infections. Increasingly outpatient infections involve antibiotic-resistant Gram-positive pathogens including methicillin-resistant S. aureus. METHODS: This randomized, blinded, comparator-controlled, multinational trial compared the efficacy and safety of linezolid and cefadroxil for treatment of uncomplicated skin/skin structure infections in pediatric patients. Children ages 5 to 11 years were to receive linezolid suspension [10 mg/kg (up to 600 mg)] or cefadroxil suspension [15 mg/kg (up to 500 mg)] every 12 h. Patients ages 12 to 17 years were to receive linezolid tablets (600 mg) or cefadroxil capsules (500 mg) every 12 h. Therapy lasted 10 to 21 consecutive days with a follow-up visit 10 to 21 days posttherapy. RESULTS: Linezolid and cefadroxil were consistently effective treatments across all primary and secondary efficacy assessments. At follow-up cure rates were 88.7% (205 of 231) for linezolid-treated and 86.2% (193 of 224) for cefadroxil-treated intent-to-treat patients; cure rates were 91.0% (201 of 221) for linezolid-treated and 90.0% (189 of 210) for cefadroxil-treated clinically evaluable patients. S. aureus was eradicated in 89.6% (120 of 134) linezolid-treated and 88.8% (111 of 125) cefadroxil-treated microbiologically evaluable patients. Gastrointestinal complaints were the most common adverse events reported, without significant differences between treatment groups, and myelosuppression was not observed in this study. CONCLUSIONS: Linezolid is well-tolerated and as effective as cefadroxil in treating uncomplicated skin infections in pediatric patients. Linezolid effectively treated infections caused by S. aureus, methicillin-resistant S. aureus and S. pyogenes.