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Tiniakou E, Pinal-Fernandez I, Lloyd TE, Albayda J, Paik J, Werner JL, Parks CA, Casciola-Rosen L, Christopher-Stine L, Mammen AL. More severe disease and slower recovery in younger patients with anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase-associated autoimmune myopathy. Rheumatology (Oxford) 2017; 56:787-794. [PMID: 28096458 PMCID: PMC5850825 DOI: 10.1093/rheumatology/kew470] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 11/18/2016] [Indexed: 12/21/2022] Open
Abstract
Objective To study disease severity and response to therapy in a large cohort of patients with anti-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR)-associated myositis. Methods Muscle strength, creatine kinase levels and treatments were assessed in anti-HMGCR-positive patients at each clinical visit. Univariate and multivariate analyses were used to analyse the influence of clinical characteristics on strength and the change in strength over time. Whole exome sequencing was performed in a subset of patients. Results . Among 50 patients followed for ⩾2 years, only 22 (44%) reached full strength with immunosuppressive therapy; even among those with full strength, 55% continued to have CK levels in excess of 500 IU/l and only three could be tapered off immunosuppressive therapy. Both univariate and multivariate analysis showed that patients who were older at disease onset were stronger at all time points (P < 0.001) and improved faster (P < 0.008) than younger patients; a history of statin exposure was not independently associated with the improvement rate. Younger patients were more likely to have refractory disease (P = 0.02) than older patients. Among eight refractory patients with DNA available for testing, whole exome sequencing did not reveal pathogenic mutations in known dystrophy genes. The risk of cancer was not increased in anti-HMGCR myositis patients compared with the general population. Conclusions Anti-HMGCR myositis is usually a chronic disease requiring long-term immunosuppression. Although younger patients had more severe disease and a worse prognosis than older patients, they did not have evidence of a known co-existing muscular dystrophy to explain their persistent, and sometimes progressive, muscle weakness.
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Affiliation(s)
- Eleni Tiniakou
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore
| | | | - Thomas E. Lloyd
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore
| | - Jemima Albayda
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore
| | - Julie Paik
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore
| | - Jessie L. Werner
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore
| | - Cassie A. Parks
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda and
| | | | - Lisa Christopher-Stine
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Andrew L. Mammen
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda and
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Pinal-Fernandez I, Parks C, Werner JL, Albayda J, Paik J, Danoff SK, Casciola-Rosen L, Christopher-Stine L, Mammen AL. Longitudinal Course of Disease in a Large Cohort of Myositis Patients With Autoantibodies Recognizing the Signal Recognition Particle. Arthritis Care Res (Hoboken) 2016; 69:263-270. [PMID: 27111848 DOI: 10.1002/acr.22920] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/07/2016] [Accepted: 04/19/2016] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Patients with immune-mediated necrotizing myopathy (IMNM) often have autoantibodies recognizing the signal recognition particle (SRP) or HMG-CoA reductase (HMGCR). Here, we studied a cohort of anti-SRP patients to identify factors associated with disease severity and clinical improvement; we also compared the severity of weakness in those with anti-SRP versus anti-HMGCR autoantibodies. METHODS All anti-SRP patients in the Johns Hopkins Myositis Cohort from 2002 to 2015 were included. Longitudinal information regarding proximal muscle strength, creatine kinase (CK) levels, and immunosuppressive therapy was recorded at each visit. Univariate and multivariate multilevel regression models were used to assess prognostic factors influencing recovery. Strength in the anti-SRP patients was compared to strength in 49 previously described anti-HMGCR subjects. RESULTS Data from 37 anti-SRP patients and 380 total clinic visits were analyzed. Younger age at onset was associated with more severe weakness at the first visit (P = 0.02) and all subsequent visits (P = 0.002). Only 50% of patients reached near-full or full strength after 4 years of treatment, and most of these continued to have elevated CK levels. Rituximab appeared to be effective in 13 of 17 anti-SRP patients. Anti-SRP patients were significantly weaker than those with anti-HMGCR autoantibodies (-1.3 strength points; P = 0.001). CONCLUSION Younger age at onset is associated with more severe weakness in anti-SRP myositis. Furthermore, even among anti-SRP patients whose strength improved with immunosuppression, most had ongoing disease activity as demonstrated by elevated CK levels. Finally, anti-SRP patients were significantly weaker than anti-HMGCR patients, providing evidence that these autoantibodies are associated with distinct forms of IMNM.
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Affiliation(s)
- Iago Pinal-Fernandez
- Iago Pinal-Fernandez, M.D, Ph.D., Cassie Parks and Andrew L. Mammen, M.D., Ph.D.: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD. Jessie L. Werner, Myma Albayda M.D., Julie Paik M.D., Sonye Danoff, M.D., Ph.D., Livia A. Casciola-Rosen, Ph.D., Lisa Christopher-Stine, M.D., M.P.H. and Andrew L. Mammen M.D., Ph.D.: Johns Hopkins University School of Medicine, Baltimore, MD
| | - Cassie Parks
- Iago Pinal-Fernandez, M.D, Ph.D., Cassie Parks and Andrew L. Mammen, M.D., Ph.D.: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD. Jessie L. Werner, Myma Albayda M.D., Julie Paik M.D., Sonye Danoff, M.D., Ph.D., Livia A. Casciola-Rosen, Ph.D., Lisa Christopher-Stine, M.D., M.P.H. and Andrew L. Mammen M.D., Ph.D.: Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jessie L Werner
- Iago Pinal-Fernandez, M.D, Ph.D., Cassie Parks and Andrew L. Mammen, M.D., Ph.D.: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD. Jessie L. Werner, Myma Albayda M.D., Julie Paik M.D., Sonye Danoff, M.D., Ph.D., Livia A. Casciola-Rosen, Ph.D., Lisa Christopher-Stine, M.D., M.P.H. and Andrew L. Mammen M.D., Ph.D.: Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jemyma Albayda
- Iago Pinal-Fernandez, M.D, Ph.D., Cassie Parks and Andrew L. Mammen, M.D., Ph.D.: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD. Jessie L. Werner, Myma Albayda M.D., Julie Paik M.D., Sonye Danoff, M.D., Ph.D., Livia A. Casciola-Rosen, Ph.D., Lisa Christopher-Stine, M.D., M.P.H. and Andrew L. Mammen M.D., Ph.D.: Johns Hopkins University School of Medicine, Baltimore, MD
| | - Julie Paik
- Iago Pinal-Fernandez, M.D, Ph.D., Cassie Parks and Andrew L. Mammen, M.D., Ph.D.: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD. Jessie L. Werner, Myma Albayda M.D., Julie Paik M.D., Sonye Danoff, M.D., Ph.D., Livia A. Casciola-Rosen, Ph.D., Lisa Christopher-Stine, M.D., M.P.H. and Andrew L. Mammen M.D., Ph.D.: Johns Hopkins University School of Medicine, Baltimore, MD
| | - Sonye K Danoff
- Iago Pinal-Fernandez, M.D, Ph.D., Cassie Parks and Andrew L. Mammen, M.D., Ph.D.: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD. Jessie L. Werner, Myma Albayda M.D., Julie Paik M.D., Sonye Danoff, M.D., Ph.D., Livia A. Casciola-Rosen, Ph.D., Lisa Christopher-Stine, M.D., M.P.H. and Andrew L. Mammen M.D., Ph.D.: Johns Hopkins University School of Medicine, Baltimore, MD
| | - Livia Casciola-Rosen
- Iago Pinal-Fernandez, M.D, Ph.D., Cassie Parks and Andrew L. Mammen, M.D., Ph.D.: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD. Jessie L. Werner, Myma Albayda M.D., Julie Paik M.D., Sonye Danoff, M.D., Ph.D., Livia A. Casciola-Rosen, Ph.D., Lisa Christopher-Stine, M.D., M.P.H. and Andrew L. Mammen M.D., Ph.D.: Johns Hopkins University School of Medicine, Baltimore, MD
| | - Lisa Christopher-Stine
- Iago Pinal-Fernandez, M.D, Ph.D., Cassie Parks and Andrew L. Mammen, M.D., Ph.D.: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD. Jessie L. Werner, Myma Albayda M.D., Julie Paik M.D., Sonye Danoff, M.D., Ph.D., Livia A. Casciola-Rosen, Ph.D., Lisa Christopher-Stine, M.D., M.P.H. and Andrew L. Mammen M.D., Ph.D.: Johns Hopkins University School of Medicine, Baltimore, MD
| | - Andrew L Mammen
- Iago Pinal-Fernandez, M.D, Ph.D., Cassie Parks and Andrew L. Mammen, M.D., Ph.D.: National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD. Jessie L. Werner, Myma Albayda M.D., Julie Paik M.D., Sonye Danoff, M.D., Ph.D., Livia A. Casciola-Rosen, Ph.D., Lisa Christopher-Stine, M.D., M.P.H. and Andrew L. Mammen M.D., Ph.D.: Johns Hopkins University School of Medicine, Baltimore, MD
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Werner JL, Christopher-Stine L, Ghazarian SR, Pak KS, Kus JE, Daya NR, Lloyd TE, Mammen AL. Antibody levels correlate with creatine kinase levels and strength in anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase-associated autoimmune myopathy. ACTA ACUST UNITED AC 2013; 64:4087-93. [PMID: 22933019 DOI: 10.1002/art.34673] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 08/09/2012] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Autoantibodies recognizing 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) are found in patients with statin-associated immune-mediated necrotizing myopathy and, less commonly, in statin-unexposed patients with autoimmune myopathy. The main objective of this study was to define the association of anti-HMGCR antibody levels with disease activity. METHODS Anti-HMGCR levels, creatine kinase (CK) levels, and strength were assessed in anti-HMGCR-positive patients. Associations of antibody level with CK level and strength at visit 1 were analyzed in 55 patients, 40 of whom were exposed to statins. In 12 statin-exposed and 5 statin-unexposed patients with serum from 5 serial visits, the evolution of antibody levels, CK levels, and strength was investigated. RESULTS Antibody levels were associated with CK levels (P < 0.001), arm strength (P < 0.05), and leg strength (P < 0.05) at visit 1, but these associations were only significant among statin-exposed patients in stratified analyses. With immunosuppressive treatment over 26.2 ± 12.6 months (mean ± SD), antibody levels declined (P < 0.05) and arm abduction strength improved (P < 0.05) in the 17 patients followed up longitudinally. The separate analysis showed that statin-exposed patients developed decreased antibody levels (P < 0.01), decreased CK levels (P < 0.001), improved arm strength (P < 0.05), and improved hip flexion strength (P < 0.05) with treatment. Anti-HMGCR antibody levels did not normalize in any patient. CONCLUSION In the entire cohort, initial anti-HMGCR levels correlated with indicators of disease activity; with immunosuppressive treatment, antibody levels declined and arm strength improved. Statin-exposed patients had significant improvements in CK levels and strength whereas statin-unexposed patients did not, suggesting a phenotypic difference between statin-exposed and statin-unexposed anti-HMGCR-positive patients.
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Affiliation(s)
- Jessie L Werner
- Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
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Abstract
Twenty-four patients with proven primary and/or metastatic cancer received single intravenous injections of phospholipid vesicles containing 0.5 mCi of Indium-111. Gamma camera scintigraphy 1 to 72 hours later visualized tumors in 22 patients (92%), including carcinomas of breast, lung, colon, prostate, kidney, cervix, thyroid, and soft tissue sarcoma, lymphoma, and melanoma. Tumor sites that were identified included soft tissues, bone, lung, liver, lymph node, and spinal cord. There were only two false-positive images in metastatic sites and four false-negative images in metastatic sites. Overall sensitivity for tumors in 97 individual sites was 85%, whereas specificity was 96%. Unsuspected areas of malignancy were seen in the lumbar subdural space, pleura, liver, thyroid, and lung. Besides tumor accumulations, homogeneous uptake was observed in normal liver and spleen. Radiation doses to these two organs were 2.2 and 2.9 cGy/0.5 mCi In-111, respectively. Whole body radiation dose was 0.3 cGy/0.5 mCi. The use of Indium-111-labeled vesicles permits a wide variety of human tumors in primary and metastatic sites to be imaged without toxicity and with radiation doses comparable to other radionuclide scanning techniques.
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Affiliation(s)
- C A Presant
- Wilshire Oncology Medical Group, West Covina, CA 91790
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