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Abstract Details

Safety of Discontinuing Disease-modifying Therapy in Aging MS Patients: A Single-center Study
Multiple Sclerosis
P4 - Poster Session 4 (11:45 AM-12:45 PM)
6-015
While several studies have suggested stopping DMT may be safe in patients over 55 years old with at least two years without active relapses, there are no studies demonstrating clinical, radiographic stability, including OCT measurements to detect neurodegeneration.
To evaluate safety of discontinuing injectable disease-modifying therapies (DMT) in aging patients with relapsing-remitting Multiple Sclerosis (RRMS) with both clinical outcomes and OCT as a measure of neurodegeneration. 
Patients from a single MS clinic at the University of Utah between ages 46-86 who had either discontinued DMT (glatiramer acetate or interferon beta 1a) or were planning to discontinue were included. All participants had regular interval MRI scans, received a baseline OCT test, and followed clinically for signs and symptoms of relapse or progression. We have completed follow up OCT testing on nine patients, with the remaining scheduled in the coming months. We are comparing total macular volume (TMV) before and after stopping DMT. Eyes with retinal disease or glaucoma are excluded from analysis. 
Prospective study of 40 patients, 3 never on DMT, 1 still on DMT, and 36 off. Patients were on average 24.9 years out from MS diagnosis with average treatment duration of 240 months, and average discontinuation age of 64.7. No patients demonstrated clinical or radiographic evidence of relapse in the average 47.4 months after stopping DMT. Preliminary OCT comparisons (9 patients) show no statistically significant change in TMV in right eye (p=0.593) or left eye (p=0.11). 
Our initial results demonstrate stability of clinical metrics in older patients discontinuing injectable DMTs. OCT measurements will provide insight into the potential for ongoing neurodegeneration following DMT discontinuation. 
Authors/Disclosures
Cori Polonski, MD
PRESENTER
Dr. Polonski has nothing to disclose.
Ka-Ho Wong (U of U Neurology Clinic) The institution of Mr. Wong has received research support from The Sumaira Foundation .
Trieste Francis Miss Francis has nothing to disclose.
John W. Rose, MD, FAAN (Imaging and Neurosciences Center) The institution of Dr. Rose has received research support from National Multiple Sclerosis Society. The institution of Dr. Rose has received research support from Guthy Jackson Charitable Foundation. The institution of Dr. Rose has received research support from NIH . The institution of Dr. Rose has received research support from VA. The institution of Dr. Rose has received research support from Biogen. The institution of Dr. Rose has received research support from Friends of MS. Dr. Rose has received intellectual property interests from a discovery or technology relating to health care.