BACKGROUND: @entity15 ( @entity15 ) @entity1 lacking CSF oligoclonal bands are purported to have a milder course of disease. We reviewed the natural history of oligoclonal band (OCB) - negative (OCB-) compared to OCB positive (OCB+) @entity1 . METHOD: A retrospective study of 451 @entity15 @entity1 . RESULTS: Only 48/451 @entity1 (10.6%) were CSF OCB-. The mean age at onset was 37.1+/-8.8 years with female:male ratio=2. First CNS location presentation was less well defined in OCB- vs. OCB+ @entity1 with significantly more supratentorial presentation. The clinical course of OCB- vs OCB+ was somewhat different; 22.9 vs 15.1% PPMS; 18.8 vs 12.4% SPMS; and 56.3 vs 71% RRMS, respectively. There were significantly fewer WBC, less IgG and a lower IgG index in OCB- cases. Fewer OCB- cases fulfilled McDonald MRI criteria. There were no discernable differences in disease severity between the two groups as determined by the EDSS, progression index, MSSS, number of relapses or annualized relapse rate. CONCLUSION: The presence of OCB correlates better with other indications of acute inflammatory @entity15 , especially an RR course. This study suggests that the simple lack of OCB positivity does not necessarily insure a more benign disease course.

The prognostic significance of cerebrospinal fluid in XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity15 :: ('MESH:D009103', 'Disease') :: ['Multiple Sclerosis', 'MS']
@entity15 :: (MESH:D009103,Disease) :: ['multiple sclerosis']
