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Ramzi A, Maya S, Balousha N, Sabet H, Samir A, Roshdy MR, Aljarrah G, Saleh S, Kertam A, Serag I, Shiha MR. Subcutaneous immunoglobulins (SCIG) for chronic inflammatory demyelinating polyneuropathy (CIDP): A comprehensive systematic review of clinical studies and meta-analysis. Neurol Sci 2024:10.1007/s10072-024-07640-3. [PMID: 38937399 DOI: 10.1007/s10072-024-07640-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 06/05/2024] [Indexed: 06/29/2024]
Abstract
BACKGROUND Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) presents significant treatment challenges due to its chronic nature, varied clinical presentations, and rarity. Subcutaneous immunoglobulin (SCIG) has emerged as a maintenance therapy, offering potential advantages in administration and patient experience over the previously recognized intravenous immunoglobulin (IVIG). METHODS We included all clinical studies involving CIDP patients treated with SCIG from eleven databases up to March 2024. RESULTS 50 clinical studies were included in the systematic review, with 22 involved in the meta-analysis. These studies offer clinical data on around 1400 CIDP patients. Almost all studies considered SCIG a maintenance therapy, with the majority of results suggesting it as a viable substitute that may offer comparable or enhanced advantages. Studies covered aspects such as efficacy, safety, quality of life, practicality, economic evaluation, and patient preference. Meta-analysis showed SCIG significantly improved muscle strength and sensory function, had fewer and milder side effects, reduced relapse rates, and received a strong preference. CONCLUSIONS Findings suggest that SCIG for CIDP maintenance not only provides a more feasible alternative, with economic evaluations showing considerable cost reductions over time, and patient preference for SCIG being pronounced, but may also deliver comparable or superior health outcomes. Ongoing research lines on formulations, techniques, and direct comparative studies are critical to further illuminate, enhance, and expand SCIG's role in treatment.
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Affiliation(s)
- Ahmed Ramzi
- Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Subhia Maya
- Faculty of Medicine, Damascus University, Damascus, Syria
| | | | - Haneen Sabet
- Faculty of Medicine, South Valley University, Qena, Egypt
| | - Ahmed Samir
- Faculty of Medicine, Al-Azhar University, New Damietta, Egypt
| | | | - Ghalia Aljarrah
- Faculty of Medicine, Al-Balqa Applied University, Salt, Jordan
| | - Sireen Saleh
- Faculty of Medicine, Al-Quds University, East Jerusalem, Palestine
| | - Ahmed Kertam
- Faculty of Medicine, Ain-Shams University, Cairo, Egypt
| | - Ibrahim Serag
- Faculty of Medicine, Mansoura University, Mansoura, Egypt
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Cocito D, Peci E, Torrieri MC, Clerico M. Subcutaneous Immunoglobulin in Chronic Inflammatory Demyelinating Polyneuropathy: A Historical Perspective. J Clin Med 2023; 12:6961. [PMID: 38002576 PMCID: PMC10671960 DOI: 10.3390/jcm12226961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
The therapeutic administration of subcutaneous immunoglobulin (SCIg) offers various advantages over intravenous immunoglobulin (IVIg). This narrative review examines and compares SCIg versus IVIg in chronic inflammatory demyelinating polyneuropathy (CIDP). SCIg is as effective as IVIg but is better tolerated and easier to administer, as intravenous access is not required. Furthermore, SCIg administration is more convenient and cost-effective than IVIg, enabling flexible treatment scheduling at home and improving patients' overall quality of life. The availability of highly concentrated immunoglobulin G (IgG) subcutaneous solutions, such as IgPro20, a 20% IgG solution stabilized with L-proline, allows for the administration of larger volumes in a single session, while the parallel development of new technological devices enables the delivery of higher doses over a shorter time. Based on the results of the PATH study, SCIg has become a well-established therapy in CIDP. In addition to discussing the advantages of SCIg, this review summarizes the evolution of SCIg by discussing all the relevant clinical studies which have considered its use in the treatment of CIDP.
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Affiliation(s)
- Dario Cocito
- Clinical and Biological Sciences Department, University of Turin, 10043 Orbassano, Italy
| | - Erdita Peci
- Clinical and Biological Sciences Department, University of Turin, 10043 Orbassano, Italy
| | | | - Marinella Clerico
- Academic Neurology Unit, San Luigi Gonzaga University Hospital, Clinical and Biological Sciences Department, University of Turin, 10043 Orbassano, Italy;
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Alonge P, Di Stefano V, Lupica A, Gangitano M, Torrente A, Pignolo A, Maggio B, Iacono S, Gentile F, Brighina F. Clinical and Neurophysiological Follow-Up of Chronic Inflammatory Demyelinating Polyneuropathy Patients Treated with Subcutaneous Immunoglobulins: A Real-Life Single Center Study. Brain Sci 2022; 13:brainsci13010010. [PMID: 36671992 PMCID: PMC9856456 DOI: 10.3390/brainsci13010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/17/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND chronic idiopathic demyelinating polyneuropathy (CIDP) is an acquired, immune-mediated neuropathy characterized by weakness, sensory symptoms and significant reduction or loss of deep tendon reflexes evolving over 2 months at least, associated with electrophysiological evidence of peripheral nerve demyelination. Recently, subcutaneous immunoglobulins (SCIg) have been introduced in clinical practice as a maintenance therapy for CIDP; nevertheless, electrophysiological and efficacy data are limited. METHODS to evaluate SCIg treatment efficacy, we retrospectively reviewed data from 15 CIDP patients referring to our clinic, receiving SCIg treatment and who performed electrophysiological studies (NCS) and clinical scores (MRC sumscore, INCAT disability score and ISS) before starting the treatment and at least one year after. RESULTS NCS showed no significant changes before and during treatment for all the nerves explored. Clinical scores did not significantly change between evaluations. Correlation analysis evidenced a positive correlation of cMAPs distal amplitude with MRC sumscore and a trend of negative correlation with the INCAT disability score. CONCLUSIONS SCIg maintenance therapy preserves nerve function in CIDP with a good efficacy and safety. Treatment effectiveness can be assessed with ENG, which represents a useful instrument in the follow-up and prognostic assessment of CIDP.
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Goyal NA, Karam C, Sheikh KA, Dimachkie MM. Subcutaneous immunoglobulin treatment for chronic inflammatory demyelinating polyneuropathy. Muscle Nerve 2021; 64:243-254. [PMID: 34260074 PMCID: PMC8457117 DOI: 10.1002/mus.27356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 06/11/2021] [Accepted: 06/15/2021] [Indexed: 12/15/2022]
Abstract
Immunoglobulin G (IgG) therapy is an established long‐term treatment in chronic inflammatory demyelinating polyneuropathy (CIDP) that is commonly administered intravenously (IVIg). The subcutaneous immunoglobulin (SCIg) administration route is a safe and effective alternative option, approved by the United States Food and Drug Administration (FDA) in 2018, for maintenance treatment of adults with CIDP. Physicians and patients alike need to be aware of all their treatment options in order to make informed decisions and plan long‐term treatment strategies. In this review, we collate the evidence for SCIg in CIDP from all published studies and discuss their implications and translation to clinical practice. We also provide guidance on the practicalities of how and when to transition patients from IVIg to SCIg and ongoing patient support. Evidence suggests that IVIg and SCIg have comparable long‐term efficacy in CIDP. However, SCIg can provide additional benefits for some patients, including no requirement for venous access or premedication, and reduced frequency of systemic adverse events. Local‐site reactions are more common with SCIg than IVIg, but these are mostly well‐tolerated and abate with subsequent infusions. Data suggest that many patients prefer SCIg following transition from IVIg. SCIg preference may be a result of the independence and flexibility associated with self‐infusion, whereas IVIg preference may be a result of familiarity and reliance on a healthcare professional for infusions. In practice, individualizing maintenance dosing based on disease behavior and determining the minimally effective IgG dose for individuals are key considerations irrespective of the administration route chosen.
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Affiliation(s)
- Namita A Goyal
- Department of Neurology, MDA ALS and Neuromuscular Center, University of California, Irvine, California, USA
| | - Chafic Karam
- Department of Neurology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Kazim A Sheikh
- Department of Neurology, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Mazen M Dimachkie
- Department of Neurology, University of Kansas Medical Center, Kansas City, Kansas, USA
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Alcantara M, Hartung HP, Lawo JP, Durn BL, Mielke O, Bril V. Electrophysiological predictors of response to subcutaneous immunoglobulin therapy in chronic inflammatory demyelinating polyneuropathy. Clin Neurophysiol 2021; 132:2184-2190. [PMID: 34293528 DOI: 10.1016/j.clinph.2021.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 04/19/2021] [Accepted: 05/18/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To assess axonal function prior to subcutaneous immunoglobulin (SCIG) therapy or placebo in relation to relapse in chronic inflammatory demyelinating polyneuropathy (CIDP) to determine whether axonal damage can predict therapy response. METHODS Relapse rates in patients from the Polyneuropathy and Treatment with Hizentra (PATH) study, where patients were treated with placebo or SCIG (IgPro20), were analyzed by baseline (post-intravenous immunoglobulin stabilization) axonal damage (≤1 mV peroneal compound muscle action potential) status. RESULTS In patients with non-axonal damage, relapses were significantly higher with placebo (73.0%) than IgPro20 (0.2 g/kg: 39.1%, 0.4 g/kg: 19.2%). In patients with axonal damage, IgPro20 had no effect on relapse (placebo: 25.0%, IgPro20: 0.2 g/kg: 30.0%, 0.4 g/kg: 19.4%). Patients with axonal damage relapsed significantly less on placebo versus non-axonal damage, but they also demonstrated higher baseline disability. CONCLUSION Axonal damage may correspond to relapse upon treatment withdrawal; patients with axonal damage relapse less, possibly reflecting poor response to immunoglobulin therapy, while non-axonal damage patients may experience more relapse, perhaps indicating better treatment response. SIGNIFICANCE In CIDP patients with axonal loss, immunoglobulin therapy may not be as effective. Assessing axonal damage could help guide therapy, with immunoglobulins ideally used before substantial axonal damage arises.
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Affiliation(s)
- Monica Alcantara
- Ellen & Martin Prosserman Centre for Neuromuscular Diseases, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Canada
| | - Hans-Peter Hartung
- Department of Neurology, UKD and Center for Neurology and Neuropsychiatry, LVR Klinikum, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany; Brain and Mind Centre, University of Sydney, Australia; Medical University of Vienna, Austria
| | | | | | | | - Vera Bril
- Ellen & Martin Prosserman Centre for Neuromuscular Diseases, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Canada.
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Weerasinghe D, Veerapandiyan A, Stanton M, Herrmann DN, Akmyradov C, Logigian E. Recovery of foot drop in chronic inflammatory demyelinating polyneuropathy (CIDP). Muscle Nerve 2021; 64:59-63. [PMID: 33876440 DOI: 10.1002/mus.27253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 04/11/2021] [Accepted: 04/17/2021] [Indexed: 11/09/2022]
Abstract
INTRODUCTION/AIMS Foot drop is common in chronic inflammatory demyelinating polyneuropathy (CIDP), but its prognosis is uncertain. METHODS CIDP patients with less than anti-gravity strength (<3/5 power) of ankle dorsiflexion (ADF) on Medical Research Council manual muscle testing on presentation at our center were identified by retrospective review. After initiation of standard treatment, ADF power was serially tabulated, and predictors of recovery were determined. RESULTS Of the 27 identified patients, ADF power at presentation was <3/5 in 48/54 legs. At 1 y after treatment, ADF power improved to >/= 3/5 in 17/27 patients in one (N = 6) or both (N = 11) legs. On multi-variate analysis, predictors of recovery of ADF power were tibialis anterior compound muscle action potential amplitude at presentation, shorter disease duration, and female gender. DISCUSSION Foot drop improves to anti-gravity power in most treated CIDP patients depending in part on the severity of fibular motor axon loss at onset of treatment.
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Affiliation(s)
- Dinushi Weerasinghe
- Department of Neurology, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | - Aravindhan Veerapandiyan
- Division of Neurology, Department of Pediatrics, University of Arkansas for Medical Sciences, Arkansas Children's Hospital, Little Rock, Arkansas, USA
| | - Michael Stanton
- Department of Neurology, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | - David N Herrmann
- Department of Neurology, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | - Chary Akmyradov
- Biostatistics Core, Arkansas Children's Research Institute, Little Rock, Arkansas, USA
| | - Eric Logigian
- Department of Neurology, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
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Rajabally YA, Goedee HS. Electrophysiology in CIDP: Should we use it beyond diagnosis? Clin Neurophysiol 2020; 132:204-206. [PMID: 33214034 DOI: 10.1016/j.clinph.2020.10.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 10/19/2020] [Indexed: 11/24/2022]
Affiliation(s)
- Yusuf A Rajabally
- Inflammatory Neuropathy Clinic, Department of Neurology, University Hospitals Birmingham, Birmingham, UK; Aston Medical School, Aston University, Birmingham, UK.
| | - H Stephan Goedee
- Brain Center UMC Utrecht, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, Netherlands
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Bril V, Hartung HP, Lawo JP, Durn BL, Mielke O. Electrophysiological testing in chronic inflammatory demyelinating polyneuropathy patients treated with subcutaneous immunoglobulin: The Polyneuropathy And Treatment with Hizentra (PATH) study. Clin Neurophysiol 2020; 132:226-231. [PMID: 33039291 DOI: 10.1016/j.clinph.2020.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/12/2020] [Accepted: 09/07/2020] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To assess electrophysiology parameters that can reflect patients' clinical status and show changes in nerve function with treatment, in a study of subcutaneous immunoglobulin in chronic inflammatory demyelinating polyneuropathy. METHODS Nerve conduction studies (latency, conduction velocity, conduction block and compound muscle action potential [CMAP] on upper limb median, ulnar, and lower limb peroneal motor nerves) were conducted in the placebo-controlled PATH (Polyneuropathy And Treatment with Hizentra) study of two doses of maintenance subcutaneous immunoglobulin (SCIG) IgPro20 in CIDP. RESULTS Averaged proximal latency substantially increased with placebo (+1.1 ms) indicating electrophysiologic deterioration but remained stable with IgPro20 (0.2 g/kg bodyweight [bw]: +0.1 ms; 0.4 g/kg bw: -0.1 ms). Distal latencies were also more prolonged with placebo versus IgPro20. Averaged motor nerve conduction velocity substantially decreased with placebo (-1.6 m/s) versus increasing in both IgPro20 groups (+0.2 m/s and +1.0 m/s, respectively). Conduction block and CMAP amplitudes did not change substantially. CONCLUSION These findings support the effectiveness of maintenance IgPro20, as nerve function changed in the direction of increasing nerve dysfunction with placebo but remained stable with ongoing IgPro20 therapy. SIGNIFICANCE Electrophysiology testing can support assessment of clinical status in CIDP to determine treatment efficacy.
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Affiliation(s)
- Vera Bril
- Ellen and Martin Prosserman Centre for Neuromuscular Diseases, Division of Neurology, Department of Medicine, University Health Network, University of Toronto, Toronto, Canada; Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
| | - Hans-Peter Hartung
- Department of Neurology, UKD and Center for Neurology and Neuropsychiatry, LVR Klinikum, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
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Tichy EM, Prosser B, Doyle D. Expanding the Role of the Pharmacist: Immunoglobulin Therapy and Disease Management in Neuromuscular Disorders. J Pharm Pract 2020; 35:106-119. [PMID: 32677504 PMCID: PMC8822190 DOI: 10.1177/0897190020938212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Immunoglobulin G (IgG) is a commonly used treatment for chronic neuromuscular
disorders (NMDs), such as chronic inflammatory demyelinating polyneuropathy and
multifocal motor neuropathy. IgG therapy has also shown promise in treating
other NMDs including myasthenia gravis, polymyositis, and dermatomyositis. IgG
is administered as either intravenous immunoglobulin (IVIg) or subcutaneous
immunoglobulin (SCIg), with SCIg use becoming more popular due to the treatment
burden associated with IVIg. IVIg requires regular venous access; long infusions
(typically 4-6 hours); and can result in systemic adverse events (AEs) for some
patients. In contrast, SCIg can be self-administered at home with shorter
infusions (approximately 1 hour) and fewer systemic AEs. As patient care shifts
toward home-based settings, the role of the pharmacist is paramount in providing
a continuation of care and acting as the bridge between patient and clinic.
Pharmacists with a good understanding of current recommendations, dosing
strategies, and administration routes for IgG therapy are best placed to support
patients. The aims of this review are to highlight the evidence supporting IgG
therapy in the treatment of NMDs and provide practical information on patient
management and IVIg/SCIg dosing in order to guide pharmacists on optimizing
clinical outcomes and patient care.
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Affiliation(s)
- Eric M Tichy
- Pharmacy Supply Solutions, Supply Chain Management, Mayo Clinic, Rochester, MN, USA
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Electrodiagnostic Testing of Large Fiber Polyneuropathies: A Review of Existing Guidelines. J Clin Neurophysiol 2020; 37:277-287. [DOI: 10.1097/wnp.0000000000000674] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Gentile L, Mazzeo A, Russo M, Arimatea I, Vita G, Toscano A. Long-term treatment with subcutaneous immunoglobulin in patients with chronic inflammatory demyelinating polyradiculoneuropathy: a follow-up period up to 7 years. Sci Rep 2020; 10:7910. [PMID: 32404895 PMCID: PMC7220943 DOI: 10.1038/s41598-020-64699-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/13/2020] [Indexed: 12/19/2022] Open
Abstract
Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) is a rare and heterogeneous acquired sensory-motor polyneuropathy with autoimmune pathogenesis. Intravenous immunoglobulins (IVIG) are a well-established therapy for CIDP: it is well known that at least two-thirds of these patients need these infusions for several years. More recently, Subcutaneous Immunoglobulins (SCIg) have been proved to be effective: this finding has been confirmed either in isolated cases or in few randomized trials. However, it appeared that the longest SCIg treatment follow up lasted no longer than 48 months. We report herein the results of a long-term SCIg treatment with a follow up period up to 7 years (84 months), considering safety, tolerability and patients’ perception of SCIg treatment in a CIDP population. We studied 17 patients (10 M; 7 F) with a diagnosis of CIDP, defined according to the EFNS/PNS criteria, successfully treated with IVIG every 4/6 weeks before being switched to SCIg treatment. Clinical follow-up included, apart from a routinely clinical assessment, the administration of Medical Research Council (MRC) sum-score, the Overall Neuropathy Limitation Scale (ONLS) and the Life Quality Index questionnaire (LQI). The results showed that, in the majority of this pre-selected group of CIDP patients (16/17), SCIg were well tolerated and were preferred over IVIG. Strength and motor functions remained stable or even improved during the long term follow-up (up to 84 months) with benefits on walking capability and resistance, manual activity performances and fatigue reduction.
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Affiliation(s)
- L Gentile
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy.
| | - A Mazzeo
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - M Russo
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - I Arimatea
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - G Vita
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - A Toscano
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
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Cirillo G, Todisco V, Ricciardi D, Tedeschi G. Clinical‐neurophysiological correlations in chronic inflammatory demyelinating polyradiculoneuropathy patients treated with subcutaneous immunoglobulin. Muscle Nerve 2019; 60:662-667. [DOI: 10.1002/mus.26669] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 08/09/2019] [Accepted: 08/10/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Giovanni Cirillo
- Division of Neurology and NeurophysiopathologyUniversity of Campania “Luigi Vanvitelli” Naples Italy
- Division of Human Anatomy–Laboratory of Neuronal Networks MorphologyUniversity of Campania “Luigi Vanvitelli” Naples Italy
| | - Vincenzo Todisco
- Division of Neurology and NeurophysiopathologyUniversity of Campania “Luigi Vanvitelli” Naples Italy
| | - Dario Ricciardi
- Division of Neurology and NeurophysiopathologyUniversity of Campania “Luigi Vanvitelli” Naples Italy
| | - Gioacchino Tedeschi
- Division of Neurology and NeurophysiopathologyUniversity of Campania “Luigi Vanvitelli” Naples Italy
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