Abstract Details

Title Short-term brain damage accrual in African Americans with Multiple Sclerosis: MRI Findings from the CombiRx trial

Topic Multiple Sclerosis

Presentation(s) S56 - MS Trials and Treatment (1:44 PM-1:55 PM)

Poster/Presentation
Number 005

Objective

To investigate differences in short-term brain damage accrual in African-American (AA) and Caucasian (CA) participants with relapsing-remitting multiple sclerosis (RRMS).

Background

In MS, grey matter atrophy spreads to involve more regions over time, following a sequence and a rate of accrual that appear consistent across phenotypes. The validity of these findings in different ethnicities awaits confirmation.

Design/Methods

MRI data from the CombiRx Trial were retrospectively analyzed (crossectional analysis: 801 subjects, 61 AA; 1-year longitudinal analysis: 592 subjects, 36 AA). Differences in clinical measures and MRI metrics (T2 lesion number-T2LN, supratentorial grey matter volume-SGMV and cerebellar volume-CBLV) were assessed.

Results

At baseline AA and CA patients did not differ for age, gender, disease duration, EDSS (p>0.05), but AA presented worse 9-HPT, 25-FWT and PASAT scores (p≤0.001). AA patients showed higher T2LN, lower SGMV and CBLV than CA patients at baseline (99.67±60.11 vs 85.28±54.77, p=0.009; 530.69±64.51 vs 566.52±74.08, p<0.0001 and 105.51±10.45 vs 110.50±11.59, p=0.004) and 1-year follow-up (105.80±50.84 vs 88.30±59.62, p=0.010; 499.44±57.05 vs 528.84±60.51, p=0.028,107.10±10.90 vs 112.67±11.79, p=0.097). CBLV was significantly correlated with disability in both groups at both time points. Although T2LN, SGMV and CBLV showed significant changes over time in the entire population (p<0.01), no differences in 1-year percentage changes were present between AA and CA patients (9.53±36.01 vs 5.18±30.82, p=0.419; -1.14±2.47 vs -1.04±2.65, p=0.837 and -0.41±2.27 vs -0.32±2.09, p=0.752).

Conclusions

AA MS patients showed higher disability and brain damage than CA MS patient, both in the supra- and infratentorial compartment. As AA and CA patients showed similar age, disease duration and short-term damage accrual, the between-group differences observed at baseline suggest that AA experience a faster rate of damage accrual in the very early disease stage, although we cannot exclude that the lack of difference in percentage change might result from the drop-out observed in the AA group.

Authors/Disclosures
Maria Petracca, PhD (University of Rome Sapienza) PRESENTER	Dr. Petracca has nothing to disclose.
	No disclosure on file
Leorah A. Freeman, MD, PhD (Dell Medical School, The University of Texas at Austin)	Dr. Freeman has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Novartis. Dr. Freeman has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Hoffman La-Roche. Dr. Freeman has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Genentech, Inc. Dr. Freeman has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for EMD Serono. Dr. Freeman has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Horizon. Dr. Freeman has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi. Dr. Freeman has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for TG Therapeutics. Dr. Freeman has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Sanofi-Genzyme. Dr. Freeman has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Texas Neurological Society. Dr. Freeman has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for EMD Serono/ Merck. The institution of Dr. Freeman has received research support from Genentech. The institution of Dr. Freeman has received research support from PCORI. The institution of Dr. Freeman has received research support from EMD Serono. The institution of Dr. Freeman has received research support from Sanofi. The institution of Dr. Freeman has received research support from MSAA. The institution of Dr. Freeman has received research support from National Multiple Sclerosis Society.
	No disclosure on file
	No disclosure on file
Gary R. Cutter, PhD (University of Alabama At Birmingham)	Dr. Cutter has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Biodelivery Sciences International, Biogen, Click Therapeutics, Genzyme, Genentech, GW Pharmaceuticals, Immunic, Klein-Buendel Incorporated, Medimmune/Viela Bio, Medday, Merck/Serono, Neurogenesis LTD, Novartis, Osmotica Pharmaceuticals, Perception Neurosciences, Recursion/Cerexis Pharmaceuticals, Regeneron, Reckover Pharmaceuticals, Roche, TG Therapeutics.. Dr. Cutter has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Applied Therapeutics, AI therapeutics, AMO Pharma, Astra-Zeneca, Avexis Pharmaceuticals, Biolinerx, Brainstorm Cell Therapeutics, Bristol Meyers Squibb/Celgene, CSL Behring, Galmed Pharmaceuticals, Green Valley Pharma, Horizon Pharmaceuticals, Immunic, Karuna Therapeutics, Mapi Pharmaceuticals LTD, Merck, Mitsubishi Tanabe Pharma Holdings, Opko Biologics,Prothena Biosciences, Novartis, Regeneron, Sanofi-Aventis, Reata Pharmaceuticals, NHLBI (Protocol Review Committee), University of Texas Southwestern, University of Pennsylvania, Visioneering Technologies, Inc.. Dr. Cutter has received personal compensation in the range of $500-$4,999 for serving as an Editor, Associate Editor, or Editorial Advisory Board Member for JASN.
Jerry S. Wolinsky, MD, FAAN (McGovern Medical School, UTHealth)	Dr. Wolinsky has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Avotres. Dr. Wolinsky has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Brainstorm Cell Therapeutics. Dr. Wolinsky has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Cleveland Clinic Foundation. Dr. Wolinsky has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for EMD Serono. Dr. Wolinsky has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Inmagene. Dr. Wolinsky has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Novartis/Sandoz. Dr. Wolinsky 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/Genentech. Dr. Wolinsky has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi/Genzyme. Dr. Wolinsky has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for University of Alabama Birmingham. Dr. Wolinsky has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Roche. Dr. Wolinsky has received intellectual property interests from a discovery or technology relating to health care. Dr. Wolinsky has received intellectual property interests from a discovery or technology relating to health care.
Fred D. Lublin, MD, FAAN (Icahn School of Medicine At Mount Sinai)	Dr. Lublin has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Roche/Genentech. Dr. Lublin has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Biogen. Dr. Lublin has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Neurogene. Dr. Lublin has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Novartis. Dr. Lublin has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Medimmune/Viela Bio/Horizon. Dr. Lublin has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Receptos/Celgene/BMS. Dr. Lublin has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Immunic. Dr. Lublin has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Labcorp. Dr. Lublin has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Neuralight. Dr. Lublin has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Entelexo. Dr. Lublin has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Janssen. Dr. Lublin has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Avotres. Dr. Lublin has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Sanofi. Dr. Lublin has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Biogen. Dr. Lublin has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for EMD Serono. Dr. Lublin has received personal compensation in the range of $100,000-$499,999 for serving as an Expert Witness for Multiple entities. Dr. Lublin has stock in Avotres. Dr. Lublin has stock in Neuralight. The institution of Dr. Lublin has received research support from Brainstorm. The institution of Dr. Lublin has received research support from biogen. The institution of Dr. Lublin has received research support from NIH.
Matilde Inglese, MD, PhD (University of Genoa)	Dr. Inglese has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for SANOFI GENZYME. Dr. Inglese has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for BIOGEN. Dr. Inglese has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for NOVARTIS. Dr. Inglese has received personal compensation in the range of $0-$499 for serving on a Scientific Advisory or Data Safety Monitoring board for MERCK-SERONO. Dr. Inglese has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for ROCHE. Dr. Inglese has received personal compensation in the range of $500-$4,999 for serving as an Editor, Associate Editor, or Editorial Advisory Board Member for MS Journal.

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