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Two-year follow-up study of primary and transitional progressive multiple sclerosis
G T Ingle1, V L Stevenson, D H Miller
1NMR Research Unit, Institute of Neurology, London, UK.
Multiple Sclerosis (Houndmills, Basingstoke, England)
|May 7, 2002
Summary
Magnetic resonance imaging (MRI) reveals significant changes in primary and transitional progressive multiple sclerosis (PPMS/TPMS) over two years. Brain volume decreased, and lesion load increased, indicating disease progression detectable by MRI quantification.
Area of Science:
- Neurology
- Radiology
- Clinical Medicine
Background:
- Progressive multiple sclerosis (MS) encompasses primary progressive MS (PPMS) and transitional progressive MS (TPMS).
- Understanding disease progression in PPMS and TPMS is crucial for developing effective treatments.
- Longitudinal studies are needed to track clinical and imaging changes in these MS subtypes.
Purpose of the Study:
- To document changes in clinical and magnetic resonance imaging (MRI) characteristics in a large cohort of PPMS and TPMS patients over a 2-year period.
- To assess the utility of MRI quantification in detecting disease progression in PPMS.
- To explore the relationship between clinical presentation, disease progression, and MRI findings.
Main Methods:
- A cohort of 190 patients with PPMS and TPMS was recruited from six European centers.
- Clinical and MRI examinations were performed at baseline, year one, and year two.
- Data analysis focused on changes in T2 lesion load, T1 hypointensity, brain volume, and cord volume.
Main Results:
- Significant increases in T2 lesion load and T1 hypointensity were observed over 2 years.
- Brain and cord volumes showed significant decreases, indicating atrophy.
- In PPMS, higher lesion loads were associated with non-cord syndromes, and a trend towards greater brain atrophy was seen in clinically deteriorating patients.
Conclusions:
- Measurable changes in MRI parameters are detectable in PPMS patients over a relatively short timeframe.
- MRI quantification is valuable for understanding disease mechanisms in PPMS.
- MRI metrics are likely to be beneficial in the execution of clinical trials for PPMS.