Abstract Details

Title Comparative Effectiveness, Discontinuation, and Safety of Ocrelizumab and Rituximab in Two Years of Treatment in Multiple Sclerosis

Topic Multiple Sclerosis

Presentation(s) P7 - Poster Session 7 (8:00 AM-9:00 AM)

Poster/Presentation
Number 12-010

Objective

To compare the two year experience of MS patients treated with ocrelizumab(OCR) and rituximab(RTX).

Background

OCR and RTX, used in the treatment of multiple sclerosis (MS), are monoclonal antibodies targeting CD20, resulting in B-cell depletion.

Design/Methods

Randomly selected patients who initiated OCR(n=245) and RTX(n=182) at the Rocky Mountain MS Center at the University of Colorado were retrospectively followed for up to two years. Lab data, relapse history, adverse events, MRI outcomes, disease history and patient characteristics were collected. Descriptive statistics and logistic regression adjusting for age disease duration, MS type, sex and enhancement on baseline MRI were used to describe and compare the sample groups.

Results

OCR and RTX patients had a mean age of 44.4 and 43.9 years at date of first infusion; had a mean MS disease duration of 9.6 and 12.7 years, respectively; and were predominantly female(OCR:73.9%, RTX:65.9%). Four(1.99%), 1(0.50 %), and 20(9.95%) patients experienced a clinical relapse, enhancing lesion and new T2 lesion while on OCR, respectively. 6(3.30%), 1(0.72%), and 23(16.67%) patients experienced a clinical relapse, enhancing lesion and new T2 lesion while on RTX, respectively. Before and after adjustment, the odds of experiencing disease activity was similar between OCR and RTX(unadjusted p= 0.063; adjusted p=0.249). Fifty-one(20.8%) and 45(24.7%) patients discontinued OCR and RTX at our center at <24 months, respectively. During the first (including both induction doses) and second OCR infusion, 41 (16.9%) and 26(10.0%) experienced an infusion reaction that interrupted the infusion, respectively, compared to 59(33.5%) and 16(10.3%) during respective RTX infusions. No OCR or RTX patients experienced a life-threatening reaction or were hospitalized.

Conclusions

Our data suggests that OCR and RTX are safe and effective in the treatment of MS. Additional comparative analyses and lab data will be presented.

Authors/Disclosures
Enrique Alvarez, MD, PhD (University of Colorado) PRESENTER	Dr. Alvarez has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for TG Therapeutics. Dr. Alvarez has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Biogen. Dr. Alvarez has received personal compensation in the range of $50,000-$99,999 for serving on a Scientific Advisory or Data Safety Monitoring board for EMD Serono. Dr. Alvarez has received personal compensation in the range of $50,000-$99,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Genentech. Dr. Alvarez has received personal compensation in the range of $50,000-$99,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Novartis. Dr. Alvarez has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. Dr. Alvarez has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi. Dr. Alvarez has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Celgene/BMS. The institution of an immediate family member of Dr. Alvarez has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for UCB. The institution of Dr. Alvarez has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Horizon.
Brandi L. Vollmer, MPH (Columbia University, Anschutz Medical Campus)	Ms. Vollmer has nothing to disclose.
Michlene Passeri, MD (UTMB)	Dr. Passeri has nothing to disclose.
	No disclosure on file
Anthony Declusin, MD (UCHealth)	Dr. Declusin has nothing to disclose.
Stefan Sillau	Stefan Sillau has nothing to disclose.
Kavita Nair, PhD, FAAN (University of Colorado)	Dr. Nair has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Bristol Meyers Squibb. Dr. Nair has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Novartis. Dr. Nair has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for PhRMA Foundation. Dr. Nair has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Genentech. Dr. Nair has received personal compensation in the range of $500-$4,999 for serving as a Consultant for TG Therapeutics. Dr. Nair has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for MJH Lifesciences. Dr. Nair has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Sanofi. Dr. Nair has received personal compensation in the range of $500-$4,999 for serving as a Consultant for EMD Serono. Dr. Nair has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Amgen. Dr. Nair has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Anylam . Dr. Nair has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Applied Patient Experience. Dr. Nair has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Esai. Dr. Nair has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for MHJ Life Sciences. Dr. Nair has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Sanofi-Genzyme. Dr. Nair has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Amgen. Dr. Nair has received personal compensation in the range of $500-$4,999 for serving as an officer or member of the Board of Directors for ICER. The institution of Dr. Nair has received research support from Genentech. The institution of Dr. Nair has received research support from Novartis. The institution of Dr. Nair has received research support from Genentech. The institution of Dr. Nair has received research support from Phrma Foundation. The institution of Dr. Nair has received research support from Bristol Meyers Squibb. The institution of Dr. Nair has received research support from Novartis. The institution of Dr. Nair has received research support from NINDS. The institution of Dr. Nair has received research support from Sanofi Genzyme. The institution of Dr. Nair has received research support from Kyverna Therapeutcis. Dr. Nair has a non-compensated relationship as a Board Member with Center for Improving Value in Healthcare that is relevant to AAN interests or activities.
John Corboy, MD, FAAN (U of Colorado School of Medicine)	Dr. Corboy has received personal compensation for serving as an employee of U of Coloado. Dr. Corboy has received personal compensation for serving as an employee of Rocky Mountain MS Center. Dr. Corboy has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Mylan. Dr. Corboy has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Bristol Myers Squib. Dr. Corboy has received personal compensation in the range of $10,000-$49,999 for serving as an Editor, Associate Editor, or Editorial Advisory Board Member for AAN. Dr. Corboy has received personal compensation in the range of $10,000-$49,999 for serving as an Editor, Associate Editor, or Editorial Advisory Board Member for American Neurological Association. Dr. Corboy has received personal compensation in the range of $5,000-$9,999 for serving as an Expert Witness for Mylan. The institution of Dr. Corboy has received research support from MedDay. The institution of Dr. Corboy has received research support from Novartis. The institution of Dr. Corboy has received research support from NMSS. The institution of Dr. Corboy has received research support from PCORI. The institution of Dr. Corboy has received research support from EMD Serono.
Timothy L. Vollmer, MD, FAAN	The institution of Dr. Vollmer has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Biogen IDEC. The institution of Dr. Vollmer has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Genentech/Roche. The institution of Dr. Vollmer has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Siranax. The institution of Dr. Vollmer has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Celgene. The institution of Dr. Vollmer has received personal compensation in the range of $500-$4,999 for serving as a Consultant for EMD Serono. The institution of Dr. Vollmer has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Bristol Meyers Squib. The institution of Dr. Vollmer has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Viela Bios. The institution of Dr. Vollmer has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Novartis. The institution of Dr. Vollmer has received research support from Rocky Mountain MS Center. The institution of Dr. Vollmer has received research support from Biogen. The institution of Dr. Vollmer has received research support from Actelion. The institution of Dr. Vollmer has received research support from Genentech/Roche. The institution of Dr. Vollmer has received research support from Anokion. The institution of Dr. Vollmer has received research support from TG Therapeutics.

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