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  1. Article ; Online: Future refinement of methotrexate treatment in rheumatoid arthritis: comment on the article by Yazdany et al.

    Schiff, Michael H

    Arthritis care & research

    2013  Volume 65, Issue 11, Page(s) 1892

    MeSH term(s) Arthritis, Rheumatoid/diagnosis ; Arthritis, Rheumatoid/therapy ; Choice Behavior ; Humans ; Patient Participation ; Physicians/standards ; Rheumatology/standards
    Language English
    Publishing date 2013-11
    Publishing country United States
    Document type Comment ; Letter
    ZDB-ID 645059-3
    ISSN 2151-4658 ; 0893-7524 ; 2151-464X
    ISSN (online) 2151-4658
    ISSN 0893-7524 ; 2151-464X
    DOI 10.1002/acr.22076
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Future refinement of methotrexate treatment in rheumatoid arthritis: comment on the article by Yazdany et al.

    Schiff, Michael H

    Arthritis care & research

    2013  Volume 65, Issue 11, Page(s) 1892

    MeSH term(s) Arthritis, Rheumatoid/diagnosis ; Arthritis, Rheumatoid/therapy ; Choice Behavior ; Humans ; Patient Participation ; Physicians/standards ; Rheumatology/standards
    Language English
    Publishing date 2013-11
    Publishing country United States
    Document type Comment ; Letter
    ZDB-ID 645059-3
    ISSN 2151-4658 ; 0893-7524 ; 2151-464X
    ISSN (online) 2151-4658
    ISSN 0893-7524 ; 2151-464X
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Oral to subcutaneous methotrexate dose-conversion strategy in the treatment of rheumatoid arthritis.

    Schiff, Michael H / Sadowski, Peter

    Rheumatology international

    2017  Volume 37, Issue 2, Page(s) 213–218

    Abstract: Both the American College of Rheumatology (ACR) and European League Against Rheumatism (EULAR) guidelines recommend the use of methotrexate (MTX) for the treatment of rheumatoid arthritis (RA) when there is no contraindication. While MTX is the ... ...

    Abstract Both the American College of Rheumatology (ACR) and European League Against Rheumatism (EULAR) guidelines recommend the use of methotrexate (MTX) for the treatment of rheumatoid arthritis (RA) when there is no contraindication. While MTX is the foundation of RA therapy (Singh et al. in Arthritis Care Res 64:625-639,2012), absorption saturation compromises its oral bioavailability (BA). Differences in the relative BA of oral versus subcutaneous (SC) MTX demonstrate the need for guidance on successful dose-conversion strategies. This study was designed to compare MTX PK profiles as a result of MTX administration via three different treatment administrations: oral, SC MTX administered via an auto-injector (MTXAI) into the abdomen (MTXAI
    MeSH term(s) Administration, Oral ; Aged ; Antirheumatic Agents/administration & dosage ; Antirheumatic Agents/therapeutic use ; Arthritis, Rheumatoid/drug therapy ; Cross-Over Studies ; Dose-Response Relationship, Drug ; Female ; Humans ; Injections, Subcutaneous ; Male ; Methotrexate/administration & dosage ; Methotrexate/therapeutic use ; Middle Aged ; Treatment Outcome
    Chemical Substances Antirheumatic Agents ; Methotrexate (YL5FZ2Y5U1)
    Language English
    Publishing date 2017-02
    Publishing country Germany
    Document type Journal Article ; Multicenter Study ; Randomized Controlled Trial
    ZDB-ID 8286-7
    ISSN 1437-160X ; 0172-8172
    ISSN (online) 1437-160X
    ISSN 0172-8172
    DOI 10.1007/s00296-016-3621-1
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  4. Article ; Online: Feasibility of surface-guidance combined with CBCT for intra-fractional breath-hold motion management during Ethos RT.

    Kim, Taeho / Laugeman, Eric / Kiser, Kendall / Schiff, Joshua / Marasini, Shanti / Price, Alex / Gach, H Michael / Knutson, Nels / Samson, Pamela / Robinson, Clifford / Hatscher, Casey / Henke, Lauren

    Journal of applied clinical medical physics

    2024  Volume 25, Issue 4, Page(s) e14242

    Abstract: Purpose: High-quality CBCT and AI-enhanced adaptive planning techniques allow CBCT-guided stereotactic adaptive radiotherapy (CT-STAR) to account for inter-fractional anatomic changes. Studies of intra-fractional respiratory motion management with a ... ...

    Abstract Purpose: High-quality CBCT and AI-enhanced adaptive planning techniques allow CBCT-guided stereotactic adaptive radiotherapy (CT-STAR) to account for inter-fractional anatomic changes. Studies of intra-fractional respiratory motion management with a surface imaging solution for CT-STAR have not been fully conducted. We investigated intra-fractional motion management in breath-hold Ethos-based CT-STAR and CT-SBRT (stereotactic body non-adaptive radiotherapy) using optical surface imaging combined with onboard CBCTs.
    Methods: Ten cancer patients with mobile lower lung or upper abdominal malignancies participated in an IRB-approved clinical trial (Phase I) of optical surface image-guided Ethos CT-STAR/SBRT. In the clinical trial, a pre-configured gating window (± 2 mm in AP direction) on optical surface imaging was used for manually triggering intra-fractional CBCT acquisition and treatment beam irradiation during breath-hold (seven patients for the end of exhalation and three patients for the end of inhalation). Two inter-fractional CBCTs at the ends of exhalation and inhalation in each fraction were acquired to verify the primary direction and range of the tumor/imaging-surrogate (donut-shaped fiducial) motion. Intra-fractional CBCTs were used to quantify the residual motion of the tumor/imaging-surrogate within the pre-configured breath-hold window in the AP direction. Fifty fractions of Ethos RT were delivered under surface image-guidance: Thirty-two fractions with CT-STAR (adaptive RT) and 18 fractions with CT-SBRT (non-adaptive RT). The residual motion of the tumor was quantified by determining variations in the tumor centroid position. The dosimetric impact on target coverage was calculated based on the residual motion.
    Results: We used 46 fractions for the analysis of intra-fractional residual motion and 43 fractions for the inter-fractional motion analysis due to study constraints. Using the image registration method, 43 pairs of inter-fractional CBCTs and 100 intra-fractional CBCTs attached to dose maps were analyzed. In the motion range study (image registration) from the inter-fractional CBCTs, the primary motion (mean ± std) was 16.6 ± 9.2 mm in the SI direction (magnitude: 26.4 ± 11.3 mm) for the tumors and 15.5 ± 7.3 mm in the AP direction (magnitude: 20.4 ± 7.0 mm) for the imaging-surrogate, respectively. The residual motion of the tumor (image registration) from intra-fractional breath-hold CBCTs was 2.2 ± 2.0 mm for SI, 1.4 ± 1.4 mm for RL, and 1.3 ± 1.3 mm for AP directions (magnitude: 3.5 ± 2.1 mm). The ratio of the actual dose coverage to 99%, 90%, and 50% of the target volume decreased by 0.95 ± 0.11, 0.96 ± 0.10, 0.99 ± 0.05, respectively. The mean percentage of the target volume covered by the prescribed dose decreased by 2.8 ± 4.4%.
    Conclusion: We demonstrated the intra-fractional motion-managed treatment strategy in breath-hold Ethos CT-STAR/SBRT using optical surface imaging and CBCT. While the controlled residual tumor motion measured at 3.5 mm exceeded the predetermined setup value of 2 mm, it is important to note that this motion still fell within the clinically acceptable range defined by the PTV margin of 5 mm. Nonetheless, additional caution is needed with intra-fractional motion management in breath-hold Ethos CT-STAR/SBRT using optical surface imaging and CBCT.
    MeSH term(s) Humans ; Breath Holding ; Cone-Beam Computed Tomography/methods ; Feasibility Studies ; Lung Neoplasms/diagnostic imaging ; Lung Neoplasms/radiotherapy ; Lung Neoplasms/pathology ; Radiosurgery/methods ; Radiotherapy Planning, Computer-Assisted/methods ; Radiotherapy, Image-Guided/methods ; Spiral Cone-Beam Computed Tomography
    Language English
    Publishing date 2024-01-04
    Publishing country United States
    Document type Clinical Trial, Phase I ; Journal Article
    ZDB-ID 2010347-5
    ISSN 1526-9914 ; 1526-9914
    ISSN (online) 1526-9914
    ISSN 1526-9914
    DOI 10.1002/acm2.14242
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Integrated plasma proteomics identifies tuberculosis-specific diagnostic biomarkers.

    Schiff, Hannah F / Walker, Naomi F / Ugarte-Gil, Cesar / Tebruegge, Marc / Manousopoulou, Antigoni / Garbis, Spiros D / Mansour, Salah / Wong, Pak Ho Michael / Rockett, Gabrielle / Piazza, Paolo / Niranjan, Mahesan / Vallejo, Andres F / Woelk, Christopher H / Wilkinson, Robert J / Tezera, Liku B / Garay-Baquero, Diana / Elkington, Paul

    JCI insight

    2024  Volume 9, Issue 8

    Abstract: BACKGROUNDNovel biomarkers to identify infectious patients transmitting Mycobacterium tuberculosis are urgently needed to control the global tuberculosis (TB) pandemic. We hypothesized that proteins released into the plasma in active pulmonary TB are ... ...

    Abstract BACKGROUNDNovel biomarkers to identify infectious patients transmitting Mycobacterium tuberculosis are urgently needed to control the global tuberculosis (TB) pandemic. We hypothesized that proteins released into the plasma in active pulmonary TB are clinically useful biomarkers to distinguish TB cases from healthy individuals and patients with other respiratory infections.METHODSWe applied a highly sensitive non-depletion tandem mass spectrometry discovery approach to investigate plasma protein expression in pulmonary TB cases compared to healthy controls in South African and Peruvian cohorts. Bioinformatic analysis using linear modeling and network correlation analyses identified 118 differentially expressed proteins, significant through 3 complementary analytical pipelines. Candidate biomarkers were subsequently analyzed in 2 validation cohorts of differing ethnicity using antibody-based proximity extension assays.RESULTSTB-specific host biomarkers were confirmed. A 6-protein diagnostic panel, comprising FETUB, FCGR3B, LRG1, SELL, CD14, and ADA2, differentiated patients with pulmonary TB from healthy controls and patients with other respiratory infections with high sensitivity and specificity in both cohorts.CONCLUSIONThis biomarker panel exceeds the World Health Organization Target Product Profile specificity criteria for a triage test for TB. The new biomarkers have potential for further development as near-patient TB screening assays, thereby helping to close the case-detection gap that fuels the global pandemic.FUNDINGMedical Research Council (MRC) (MR/R001065/1, MR/S024220/1, MR/P023754/1, and MR/W025728/1); the MRC and the UK Foreign Commonwealth and Development Office; the UK National Institute for Health Research (NIHR); the Wellcome Trust (094000, 203135, and CC2112); Starter Grant for Clinical Lecturers (Academy of Medical Sciences UK); the British Infection Association; the Program for Advanced Research Capacities for AIDS in Peru at Universidad Peruana Cayetano Heredia (D43TW00976301) from the Fogarty International Center at the US NIH; the UK Technology Strategy Board/Innovate UK (101556); the Francis Crick Institute, which receives funding from UKRI-MRC (CC2112); Cancer Research UK (CC2112); and the NIHR Biomedical Research Centre of Imperial College NHS.
    MeSH term(s) Humans ; Biomarkers/blood ; Proteomics/methods ; Male ; Female ; Adult ; Tuberculosis, Pulmonary/diagnosis ; Tuberculosis, Pulmonary/blood ; Mycobacterium tuberculosis ; Middle Aged ; Peru/epidemiology ; South Africa/epidemiology ; Case-Control Studies ; Sensitivity and Specificity
    Chemical Substances Biomarkers
    Language English
    Publishing date 2024-03-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ISSN 2379-3708
    ISSN (online) 2379-3708
    DOI 10.1172/jci.insight.173273
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  6. Article: Can switching to abatacept therapy in patients with rheumatoid arthritis on background methotrexate reverse TNF-inhibitor-induced antinuclear autoantibody/double-stranded DNA autoantibody conversion? An analysis of the AMPLE and ATTEST trials.

    Buch, Maya H / Johnsen, Alyssa / Schiff, Michael

    Clinical and experimental rheumatology

    2018  Volume 37, Issue 1, Page(s) 127–132

    Abstract: Objectives: To explore antinuclear autoantibody (ANA) and anti-double-stranded DNA (anti-dsDNA) autoantibody development during abatacept and tumour necrosis factor inhibitor (TNFi) treatment, and effects of switching from TNFi to abatacept in ANA/anti- ... ...

    Abstract Objectives: To explore antinuclear autoantibody (ANA) and anti-double-stranded DNA (anti-dsDNA) autoantibody development during abatacept and tumour necrosis factor inhibitor (TNFi) treatment, and effects of switching from TNFi to abatacept in ANA/anti-dsDNA autoantibody-positive patients.
    Methods: This was a post hoc analysis of biologic-naïve patients with active RA in ATTEST and AMPLE. In AMPLE, patients received subcutaneous abatacept or adalimumab (2 years). In ATTEST, patients received intravenous abatacept or infliximab (1 year), or placebo (6 months) then abatacept (6 months); at 1 year, all patients could receive abatacept (open-label long-term extension). Serum ANA/anti-dsDNA autoantibody levels were measured at baseline, Month 6 (ATTEST only), Years 1 and 2.
    Results: At baseline, 25.7 and 0.9% (AMPLE), and 21.6 and 8.4% of patients (ATTEST) were ANA/anti-dsDNA autoantibody positive, respectively. More baseline ANA/anti-dsDNA autoantibody-negative patients became positive during TNFi than abatacept treatment. In ATTEST (TNFi group), 48.5% (48/99; ANA) and 48.3% (57/118; anti-dsDNA) of patients seroconverted to positive status by Year 1, falling to 22.4% (22/98 ANA) and 13.3% (15/113; anti-dsDNA) by Year 2 after switching to abatacept. Of ANA/anti-dsDNA autoantibody-positive patients at Year 1, 41.9% and 68.9%, were negative at Year 2.
    Conclusions: ANA/anti-dsDNA seroconversion was more frequent with TNFi than abatacept therapy; TNFi-associated seroconversion decreased after switching from TNFi to abatacept.
    MeSH term(s) Abatacept/therapeutic use ; Antibodies, Monoclonal/therapeutic use ; Antirheumatic Agents/therapeutic use ; Arthritis, Rheumatoid/drug therapy ; DNA/analysis ; Humans ; Infliximab ; Methotrexate/therapeutic use ; Treatment Failure ; Tumor Necrosis Factor-alpha/antagonists & inhibitors
    Chemical Substances Antibodies, Monoclonal ; Antirheumatic Agents ; Tumor Necrosis Factor-alpha ; Abatacept (7D0YB67S97) ; DNA (9007-49-2) ; Infliximab (B72HH48FLU) ; Methotrexate (YL5FZ2Y5U1)
    Language English
    Publishing date 2018-08-21
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 605886-3
    ISSN 1593-098X ; 0392-856X
    ISSN (online) 1593-098X
    ISSN 0392-856X
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  7. Article ; Online: Preventing the progression from undifferentiated arthritis to rheumatoid arthritis: the clinical and economic implications.

    Schiff, Michael H

    The American journal of managed care

    2010  Volume 16, Issue 9 Suppl, Page(s) S243–8

    Abstract: A significant percentage of patients presenting with undifferentiated arthritis (UA) will progress to rheumatoid arthritis (RA), while others will undergo spontaneous remission. Evidence supports the use of therapeutic intervention in patients with UA to ...

    Abstract A significant percentage of patients presenting with undifferentiated arthritis (UA) will progress to rheumatoid arthritis (RA), while others will undergo spontaneous remission. Evidence supports the use of therapeutic intervention in patients with UA to delay or halt disease progression and its long-term consequences. However, there is first a need to screen patients with UA to identify those with a high probability of progressing to RA who would benefit from antirheumatic therapy. The 2010 American College of Rheumatology/European League Against Rheumatism RA classification criteria were designed for this purpose. These criteria can aid clinicians in deciding when it is appropriate to initiate therapy in patients at risk of progressing to RA. These criteria can also have important implications in reducing the inappropriate and unnecessary use of antirheumatic agents in patients less likely to develop RA, thus reducing healthcare costs and minimizing the risk of sequelae associated with these agents. Use of disease-modifying antirheumatic drugs and biologic agents in patients with UA has been associated with delays in disease progression. However, further clinical studies are needed to fully evaluate the long-term clinical and economic outcomes of these agents in patients with UA.
    MeSH term(s) Antirheumatic Agents/therapeutic use ; Arthritis/diagnosis ; Arthritis/drug therapy ; Arthritis/physiopathology ; Arthritis, Rheumatoid/diagnosis ; Arthritis, Rheumatoid/prevention & control ; Cost-Benefit Analysis ; Disease Progression ; Humans ; Mass Screening/methods
    Chemical Substances Antirheumatic Agents
    Language English
    Publishing date 2010-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2035781-3
    ISSN 1936-2692 ; 1088-0224 ; 1096-1860
    ISSN (online) 1936-2692
    ISSN 1088-0224 ; 1096-1860
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  8. Article: Differential Changes in ACPA Fine Specificity and Gene Expression in a Randomized Trial of Abatacept and Adalimumab in Rheumatoid Arthritis.

    Jabado, Omar / Maldonado, Michael A / Schiff, Michael / Weinblatt, Michael E / Fleischmann, Roy / Robinson, William H / He, Aiqing / Patel, Vishal / Greenfield, Alex / Saini, Jasmine / Galbraith, David / Connolly, Sean E

    Rheumatology and therapy

    2021  Volume 9, Issue 2, Page(s) 391–409

    Abstract: Introduction: The biologics abatacept and adalimumab have different mechanisms of action (MoAs). We analyzed data from patients with rheumatoid arthritis treated in AMPLE (NCT00929864) to explore the pharmacodynamic effects of abatacept or adalimumab on ...

    Abstract Introduction: The biologics abatacept and adalimumab have different mechanisms of action (MoAs). We analyzed data from patients with rheumatoid arthritis treated in AMPLE (NCT00929864) to explore the pharmacodynamic effects of abatacept or adalimumab on anti-citrullinated protein antibodies (ACPAs) and gene expression.
    Methods: AMPLE was a phase IIIb, 2-year, randomized, head-to-head trial of abatacept versus adalimumab. Post hoc analyses of baseline anti-cyclic citrullinated peptide-2 (anti-CCP2, an ACPA surrogate) positive (+) status and ACPA fine-specificity profiles over time, as well as transcriptional profiling (peripheral whole blood), were performed.
    Results: Of 646 patients treated (abatacept, n = 318; adalimumab, n = 328), ACPA and gene expression data were available from 508 and 566 patients, respectively. In anti-CCP2+ patients (n = 388), baseline fine specificities for most ACPAs were highly correlated; over 2 years, levels decreased with abatacept but not adalimumab. By year 2, expression of genes associated with T cell co-stimulation and antibody production was lower for abatacept versus adalimumab; expression of genes associated with proinflammatory signaling was lower for adalimumab versus abatacept. Treatment modulated the expression of T- and B-cell gene signatures, with differences in CD8+ T cells, activated T cells, plasma cells, B cells, natural killer cells (all lower with abatacept versus adalimumab), and polymorphonuclear leukocytes (higher with abatacept versus adalimumab).
    Conclusions: In AMPLE, despite similar clinical outcomes, data showed that pharmacodynamic/genetic changes after 2 years of abatacept or adalimumab were consistent with drug MoAs. Further assessment of the relationship between such changes and clinical outcomes, including prediction of response, is warranted.
    Trial registration: ClinicalTrials.gov identifier, NCT00929864.
    Language English
    Publishing date 2021-12-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 2783278-8
    ISSN 2198-6584 ; 2198-6576
    ISSN (online) 2198-6584
    ISSN 2198-6576
    DOI 10.1007/s40744-021-00404-x
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  9. Article: Early, precise, and safe clinical evaluation of the pharmacodynamic effects of novel agents in the intact human tumor microenvironment.

    Gundle, Kenneth R / Rajasekaran, Karthik / Houlton, Jeffrey / Deutsch, Gary B / Ow, Thomas J / Maki, Robert G / Pang, John / Nathan, Cherie-Ann O / Clayburgh, Daniel / Newman, Jason G / Brinkmann, Elyse / Wagner, Michael J / Pollack, Seth M / Thompson, Matthew J / Li, Ryan J / Mehta, Vikas / Schiff, Bradley A / Wenig, Barry I / Swiecicki, Paul L /
    Tang, Alice L / Davis, Jessica L / van Zante, Annemieke / Bertout, Jessica A / Jenkins, Wendy / Turner, Atticus / Grenley, Marc / Burns, Connor / Frazier, Jason P / Merrell, Angela / Sottero, Kimberly H W / Derry, Jonathan M J / Gillespie, Kate C / Mills, Bre / Klinghoffer, Richard A

    Frontiers in pharmacology

    2024  Volume 15, Page(s) 1367581

    Abstract: Introduction: ...

    Abstract Introduction:
    Language English
    Publishing date 2024-04-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587355-6
    ISSN 1663-9812
    ISSN 1663-9812
    DOI 10.3389/fphar.2024.1367581
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  10. Article: Lack of response to anakinra in rheumatoid arthritis following failure of tumor necrosis factor alpha blockade: comment on the article by Buch et al.

    Schiff, Michael H

    Arthritis and rheumatism

    2005  Volume 52, Issue 1, Page(s) 364–5; author reply 365

    MeSH term(s) Antirheumatic Agents/therapeutic use ; Arthritis, Rheumatoid/drug therapy ; Humans ; Interleukin 1 Receptor Antagonist Protein ; Sialoglycoproteins/therapeutic use ; Treatment Failure ; Tumor Necrosis Factor-alpha/antagonists & inhibitors
    Chemical Substances Antirheumatic Agents ; IL1RN protein, human ; Interleukin 1 Receptor Antagonist Protein ; Sialoglycoproteins ; Tumor Necrosis Factor-alpha
    Language English
    Publishing date 2005-01
    Publishing country United States
    Document type Comment ; Letter
    ZDB-ID 127294-9
    ISSN 1529-0131 ; 0004-3591 ; 2326-5191
    ISSN (online) 1529-0131
    ISSN 0004-3591 ; 2326-5191
    DOI 10.1002/art.20769
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