Change search
ReferencesLink to record
Permanent link

Direct link
Age-dependent effects on the treatment response of natalizumab in MS patients
Umeå University, Faculty of Medicine, Department of Pharmacology and Clinical Neuroscience.
Show others and affiliations
2015 (English)In: Multiple Sclerosis, ISSN 1352-4585, E-ISSN 1477-0970, Vol. 21, no 1, 48-56 p.Article in journal (Refereed) Published
Abstract [en]


Natalizumab is approved for treatment of active forms of relapsing-remitting multiple sclerosis (MS) based on a pivotal phase III study comprising patients aged 18-50 years. The effect of natalizumab has not been specifically studied in older patients.


We analyzed age-dependent effects on treatment-related outcome measures in 1872 patients, 189 of whom were aged 50 or more, included in the Swedish post-marketing natalizumab surveillance program.


In three MS centers registry data for patients aged >50 years were validated.


At baseline older patients had longer disease duration, higher Expanded Disability Status Scale (EDSS) and lower Symbol Digit Modality Test (SDMT) scores than younger patients. The influence from natalizumab on outcome measures was significantly reduced and 18.7% of patients >50 years stopped treatment for lack of effect compared to 7.7% in the younger age group. At baseline, the cerebrospinal fluid levels of the chemokine CXCL13 and the leukocyte cell count were negatively correlated with age in a smaller subgroup of patients.


These results were in agreement with previous findings suggesting that inflammation is more pronounced in younger patients and therefore the beneficial effects of potent anti-inflammatory treatments are subsiding with older ages.

Place, publisher, year, edition, pages
2015. Vol. 21, no 1, 48-56 p.
Keyword [en]
Natalizumab, multiple sclerosis, antibodies, monoclonals, therapeutic use, product surveillance, ognosis, biomarker
National Category
Medical and Health Sciences
URN: urn:nbn:se:umu:diva-100973DOI: 10.1177/1352458514536085ISI: 000349288100009PubMedID: 24866201OAI: diva2:795848
Available from: 2015-03-17 Created: 2015-03-16 Last updated: 2015-03-17Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed
By organisation
Department of Pharmacology and Clinical Neuroscience
In the same journal
Multiple Sclerosis
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 21 hits
ReferencesLink to record
Permanent link

Direct link