2024
Fluorescence-detection size-exclusion chromatography specifically detects autoantibodies targeting the ganglionic acetylcholine receptor in patients with autoimmune autonomic ganglionopathy
Baxter L, Hopkins S, O'Connor K, Pham M, Nowak R, Monson N, Blackburn K, Hibbs R, Vernino S, Noviello C. Fluorescence-detection size-exclusion chromatography specifically detects autoantibodies targeting the ganglionic acetylcholine receptor in patients with autoimmune autonomic ganglionopathy. Journal Of Neuroimmunology 2024, 396: 578454. PMID: 39277987, DOI: 10.1016/j.jneuroim.2024.578454.Peer-Reviewed Original ResearchAutoimmune autonomic ganglionopathyGanglionic acetylcholine receptorAutonomic ganglionopathyRadioimmunoprecipitation assayFluorescence-detection size-exclusion chromatographyAcetylcholine receptorsAutoantibody detectionClinical symptomsDetect autoantibodiesAutoimmune diseasesHealthy controlsPatient seraSize-exclusion-chromatographyAutoantibodiesGAChRGanglionopathySize exclusion chromatographyPatientsReceptors
2023
Individual myasthenia gravis autoantibody clones can efficiently mediate multiple mechanisms of pathology
Pham M, Masi G, Patzina R, Obaid A, Oxendine S, Oh S, Payne A, Nowak R, O’Connor K. Individual myasthenia gravis autoantibody clones can efficiently mediate multiple mechanisms of pathology. Acta Neuropathologica 2023, 146: 319-336. PMID: 37344701, PMCID: PMC11380498, DOI: 10.1007/s00401-023-02603-y.Peer-Reviewed Original ResearchConceptsMyasthenia gravisAntigenic modulationPathogenic mechanismsAutoimmune myasthenia gravisCurrent therapeutic approachesΑ-bungarotoxin bindingNicotinic acetylcholine receptorsReceptor blockadeSerum autoantibodiesAutoreactive clonesMonoclonal levelTherapeutic approachesMonoclonal autoantibodiesAcetylcholine receptorsComplement activationAutoantibodiesAChR subunitsJurkat cell lineDistinct molecular mechanismsPathogenic profilePathogenic capacityPathologyCell-based assaysMAbsPatientsClinicoserological insights into patients with immune checkpoint inhibitor‐induced myasthenia gravis
Masi G, Pham M, Karatz T, Oh S, Payne A, Nowak R, Howard J, Guptill J, Juel V, O'Connor K. Clinicoserological insights into patients with immune checkpoint inhibitor‐induced myasthenia gravis. Annals Of Clinical And Translational Neurology 2023, 10: 825-831. PMID: 36924454, PMCID: PMC10187728, DOI: 10.1002/acn3.51761.Peer-Reviewed Original Research
2022
Reemergence of pathogenic, autoantibody-producing B cell clones in myasthenia gravis following B cell depletion therapy
Fichtner ML, Hoehn KB, Ford EE, Mane-Damas M, Oh S, Waters P, Payne AS, Smith ML, Watson CT, Losen M, Martinez-Martinez P, Nowak RJ, Kleinstein SH, O’Connor K. Reemergence of pathogenic, autoantibody-producing B cell clones in myasthenia gravis following B cell depletion therapy. Acta Neuropathologica Communications 2022, 10: 154. PMID: 36307868, PMCID: PMC9617453, DOI: 10.1186/s40478-022-01454-0.Peer-Reviewed Original ResearchConceptsB cell depletion therapyB cell clonesMuSK-MG patientsMyasthenia gravisB cellsMG patientsDepletion therapyCell clonesAutoantibody-producing B cellsMuscle-specific tyrosine kinaseComplete stable remissionB cell receptor repertoireCell receptor repertoireValuable candidate biomarkersB cell receptorMG relapseClinical relapseStable remissionDisease relapseAutoimmune disordersRelapsePatientsAcetylcholine receptorsCandidate biomarkersReceptor repertoireA prospective natural history study and biorepository for patients with myasthenia gravis (EXPLORE-MG2) (P6-13.005)
Guptill J, Nowak R, Guidon A, Howard J, Soliven B, Hammett A, Sheldon B, Li Y, Meece T, Aban I, Cutter G, Kaminski H. A prospective natural history study and biorepository for patients with myasthenia gravis (EXPLORE-MG2) (P6-13.005). Neurology 2022, 98 DOI: 10.1212/wnl.98.18_supplement.2269.Peer-Reviewed Original ResearchIntravenous Immune Globulins vs Plasma Exchange Usage in Patients with Neuromuscular and Neuro-immunological Conditions (P4-13.007)
Rethana M, Zubair A, Ma A, McAlpine L, Abulaban A, Nowak R, Roy B. Intravenous Immune Globulins vs Plasma Exchange Usage in Patients with Neuromuscular and Neuro-immunological Conditions (P4-13.007). Neurology 2022, 98 DOI: 10.1212/wnl.98.18_supplement.2392.Peer-Reviewed Original Research
2021
Topline Results of a Phase 2 Study of Subcutaneous IMVT-1401 in Patients with Generalized Myasthenia Gravis (1417)
Benatar M, Breiner A, Bril V, Nowak R, Dunn I, Jacobs A. Topline Results of a Phase 2 Study of Subcutaneous IMVT-1401 in Patients with Generalized Myasthenia Gravis (1417). Neurology 2021, 96 DOI: 10.1212/wnl.96.15_supplement.1417.Peer-Reviewed Original Research
2019
P.026 Response to eculizumab in patients with myasthenia gravis recently treated with chronic intravenous immunoglobulin
Genge A, Jacob S, Murai H, Utsugisawa K, Nowak R, Wiendl H, Fujita K, O’Brien F, Howard J. P.026 Response to eculizumab in patients with myasthenia gravis recently treated with chronic intravenous immunoglobulin. Canadian Journal Of Neurological Sciences / Journal Canadien Des Sciences Neurologiques 2019, 46: s20-s21. DOI: 10.1017/cjn.2019.126.Peer-Reviewed Original ResearchIntravenous immunoglobulinMyasthenia gravisAnti-acetylcholine receptor antibody-positive refractoryRefractory myasthenia gravisOpen-label extensionPlacebo-controlled studyMeaningful clinical improvementExperienced exacerbationRescue therapyClinical improvementEighteen patientsMore patientsSubgroup analysisEculizumabPatientsPlaceboExacerbationRelevant improvementGravisPhase 3Status changesInterim dataImmunoglobulinPrevious reportsMeaningful responsesA.01 Relieving the burden of myasthenia gravis: eculizumab reduces exacerbation, hospitalization and rescue therapy rates
Siddiqi Z, Howard J, Jacob S, Guptill J, Meisel A, Wiendl H, Murai H, Utsugisawa K, Nowak R, Fujita K, O’Brien F, Patra K, Muppidi S. A.01 Relieving the burden of myasthenia gravis: eculizumab reduces exacerbation, hospitalization and rescue therapy rates. Canadian Journal Of Neurological Sciences / Journal Canadien Des Sciences Neurologiques 2019, 46: s8-s8. DOI: 10.1017/cjn.2019.83.Peer-Reviewed Original ResearchPre-study yearOpen-label extensionHealthcare resource utilizationMyasthenia gravisEculizumab treatmentDisease burdenSignificant healthcare resource utilizationAnti-acetylcholine receptorExacerbations/hospitalizationsGreater disease burdenPoisson regression modelsMG crisisTherapy ratesRescue therapyResponsive patientsTherapy useTherapy usageClinical endpointsExacerbationHospitalizationPatientsMeaningful benefitREGAIN studyPatient recordsEvent rates
2011
Response of patients with refractory myasthenia gravis to rituximab: a retrospective study
Nowak RJ, DiCapua DB, Zebardast N, Goldstein JM. Response of patients with refractory myasthenia gravis to rituximab: a retrospective study. Therapeutic Advances In Neurological Disorders 2011, 4: 259-266. PMID: 22010039, PMCID: PMC3187675, DOI: 10.1177/1756285611411503.Peer-Reviewed Original ResearchRefractory myasthenia gravisMyasthenia gravisAcetylcholine receptor antibody titersB cell-directed therapiesReceptor antibody titersSustained clinical improvementMyasthenia gravis patientsPlasma exchange sessionsResponse of patientsCycle 1Immunomodulating therapiesPrednisone doseRituximab therapyClinical improvementConventional immunotherapyGravis patientsProspective trialPlasma exchangeAutoimmune disordersRetrospective studyAntibody titersCertain patientsNeuromuscular transmissionPatientsRituximab