Early central atrophy rate predicts 5 year clinical outcome in multiple sclerosis.
OBJECTIVE
To examine the predictive value of central atrophy in early multiple sclerosis (MS) patients, for medium term clinical outcome.


METHODS
In 54 patients with recently diagnosed MS, clinical and MRI parameters were obtained at baseline, and after 2 and 5.5 years of follow-up. In addition to conventional MRI parameters and the annualised percentage brain volume change (aPBVC), the annualised percentage ventricular volume change (aPVVC) was quantified. Main outcome measure was disease progression, defined by an increase in Expanded Disability Status Scale of ≥1 after 5.5 years.


RESULTS
Disease progression occurred in 29 patients. aPVVC within the first two years was significantly higher in these progressing patients (median 4.76%; IQR 3.05-9.17) compared with stable patients (median 3.23%; IQR -0.1-6.02) (p=0.02). A logistic regression model selected aPVVC within the first 2 years as the only MRI marker predicting progression after 5.5 years (OR 1.17, 95% CI 1.02 to 1.35). When entering all MRI and clinical markers, again aPVVC within the first 2 years was the only MRI marker selected. While aPVVC was correlated between the two consecutive time intervals (ρ=0.41, p<0.01), aPBVC was not. Furthermore, baseline T2 lesion load and gadolinium enhancing lesion load were correlated with aPVVC in the second time interval (2-5.5 years) but not with aPBVC.


CONCLUSIONS
The rate of ventricular enlargement seems to be even more strongly predictive of disease progression after medium term follow-up than whole brain atrophy rate, and also outperforms lesion measures. Central atrophy rate could therefore be an important prognostic marker, especially in the early stages of MS.
Lukas
Carsten
C
Department of Diagnostic and Interventional Radiology and Nuclear Medicine, St Josef Hospital, Ruhr University Bochum, Bochum, Germany. carsten.lukas@rub.de
Minneboo
Arjan
A
de Groot
Vincent
V
Moraal
Bastiaan
B
Knol
Dirk L
DL
Polman
Chris H
CH
Barkhof
Frederik
F
Vrenken
Hugo
H
D000328:Adult; D001284:Atrophy; D001921:Brain / Q000473:pathology*; D002552:Cerebral Ventricles / Q000473:pathology; D004185:Disability Evaluation; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D020528:Multiple Sclerosis, Chronic Progressive / Q000175:diagnosis*; D020529:Multiple Sclerosis, Relapsing-Remitting / Q000175:diagnosis*; D009929:Organ Size / Q000502:physiology; D011379:Prognosis