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Abstract Details

Rituximab for the treatment of chronic inflammatory demyelinating polyradiculoneuropathy: A retrospective chart review
Neuromuscular and Clinical Neurophysiology (EMG)
P2 - Poster Session 2 (5:30 PM-6:30 PM)
12-010

To evaluate the therapeutic response to rituximab in patients presenting with treatment-resistant CIDP.
Several case reports and small observational studies have demonstrated variable efficacy of rituximab for treatment of chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). 
Retrospective chart review was performed on the patients who presented to the neuromuscular clinics with CIDP and received rituximab for this diagnosis. Demographic and clinical information was obtained. Baseline and post treatment MRC sum score, inflammatory neuropathy cause and treatment (INCAT) disability score, and modified Rankin score (mRS) were retrospectively inferred from data available in the chart. 
A total of 5 patients (2 males and 3 females; age range 36 to 72) were identified who had received rituximab for treatment of CIDP in our neuromuscular database. These have been previously treated with multiple therapies without adequate clinical response. The median number of prior therapies was three; including corticosteroids, mycophenolate mofetil, IV immune globulin, azathioprine, and plasma exchange. Three patients received rituximab for management of chronic symptoms of CIDP. Two patients received rituximab infusions while admitted for acute symptomatic exacerbation. Three of five patients demonstrated robust improvement in response to rituximab.  Average MRC sum score increase was 22 (range 0-60), average decrease in INCAT was 3.2 (range 2-6), and median mRS decreased from 3 to 2 over follow up period of 9 to 24 months. 

Rituximab may be a treatment option for patients with CIDP whose symptoms are refractory to more conventional treatments.

Authors/Disclosures
Matthew Varon, MD (University of Kansas Medical Center)
PRESENTER 		Dr. Varon has nothing to disclose.
Mamatha Pasnoor, MD, FAAN Dr. Pasnoor has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Argenx BVBA. Dr. Pasnoor has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Janssen Pharmaceutical. Dr. Pasnoor has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Immunovant. Dr. Pasnoor has received personal compensation in the range of $500-$4,999 for serving as a Consultant for UCB. Dr. Pasnoor has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Annexon. Dr. Pasnoor has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Grifols. Dr. Pasnoor has received personal compensation in the range of $500-$4,999 for serving as a Consultant for amgen.
Duaa Jabari, MD (The University of Kansas Medical Center) Dr. Jabari has nothing to disclose.
Constantine Farmakidis, MD, FAAN Dr. Farmakidis has received personal compensation in the range of $500-$4,999 for serving as a Consultant for UCB. Dr. Farmakidis has received personal compensation in the range of $500-$4,999 for serving as a Consultant for J&J. Dr. Farmakidis has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Muscular Dystrophy Association.
Omar Jawdat, MD (The University of Kansas Medical Center) Dr. Jawdat has nothing to disclose.
Melanie Glenn, MD No disclosure on file
Jeffrey Statland, MD (University of Kansas Medical Center) Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Arrowhead. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for ML Bio. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Epic Bio. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Armatus . Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Kate Therapeutics. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Vita Therapeutics. Dr. Statland has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Dyne Therapeutics. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Avidity . Dr. Statland has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Fulcrum Therapeutics. Dr. Statland has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Vertex . The institution of Dr. Statland has received research support from NIH. The institution of Dr. Statland has received research support from FSHD Society. The institution of Dr. Statland has received research support from Friends of FSH Research. The institution of Dr. Statland has received research support from FSHD Canada. The institution of Dr. Statland has received research support from MDA.
Richard J. Barohn, MD, FAAN (University of Missouri) Dr. Barohn has received personal compensation in the range of $50,000-$99,999 for serving as a Consultant for NuFactor. The institution of Dr. Barohn has received research support from FDA OPD R01. Dr. Barohn has received intellectual property interests from a discovery or technology relating to health care.
Mazen M. Dimachkie, MD, FAAN (University of Kansas Medical Center) Dr. Dimachkie has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Sanofi. Dr. Dimachkie has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Octapharma. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for ArgenX. Dr. Dimachkie has received personal compensation in the range of $0-$499 for serving as a Consultant for Catalyst. Dr. Dimachkie has received personal compensation in the range of $0-$499 for serving as a Consultant for Takeda. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Medlink. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for CSL Behring. Dr. Dimachkie has received personal compensation in the range of $0-$499 for serving as a Consultant for Astellas. Dr. Dimachkie has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Janssen. Dr. Dimachkie has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Dianthus. Dr. Dimachkie has received personal compensation in the range of $0-$499 for serving as a Consultant for TACT / Treat NMD. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Cabaletta Bio. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Clinical Neurological Society of America, Inc . Dr. Dimachkie has received personal compensation in the range of $0-$499 for serving as a Consultant for Ig Society, Inc. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Abcuro. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Amicus. Dr. Dimachkie has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Horizon/Immunovant. Dr. Dimachkie has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for EMD Serono. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Ipsen. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Nuvig. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for 好色先生 (AAN). Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for American Association of Neuromuscular and Electrodiagnostic Medicine (AANEM). Dr. Dimachkie has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Annexon Biosciences. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for AstraZeneca. Dr. Dimachkie has received personal compensation in the range of $0-$499 for serving as a Consultant for Candid Therapeutics. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Creyon Bio, Inc.. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Nuvig Therapeutics. Dr. Dimachkie has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for UCB Biopharma. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Vertex Pharmaceuticals. Dr. Dimachkie has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Fortrea. Dr. Dimachkie has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Kriya Therapeutics. The institution of Dr. Dimachkie has received research support from NIH. The institution of Dr. Dimachkie has received research support from The Myositis Association. The institution of Dr. Dimachkie has received research support from Biosensics. Dr. Dimachkie has received intellectual property interests from a discovery or technology relating to health care. Dr. Dimachkie has received intellectual property interests from a discovery or technology relating to health care. Dr. Dimachkie has received intellectual property interests from a discovery or technology relating to health care. Dr. Dimachkie has received publishing royalties from a publication relating to health care. Dr. Dimachkie has received publishing royalties from a publication relating to health care.