Impression of Clinical Worsening Fails to Predict Interferon-beta Neutralizing Antibody Status  

Oleh:

Rot, U. ; Sominanda, A. ; Fogdell-Hahn, A. ; Hillert, J.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The Journal of International Medical Research vol. 36 no. 06 (Nov. 2008), page 1418-1425.

Ketersediaan

Perpustakaan FK Nomor Panggil: J11.K.2008.02 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

The development of neutralizing antibodies (NAbs) against interferon-beta (IFNbeta) reduces clinical efficacy and markers of bioactivity in patients with multiple sclerosis (MS), although it has also been shown that a poor response to IFNbeta coincided with unexpectedly low NAb levels. To try and resolve this incoherency, this study investigated 2822 patients referred to a NAb testing facility. The reason for NAb testing was indicated for 2506 patients: routine testing (76%), worsening of disease (14%) and other reasons (10%). Overall, 31% of patients were NAb positive and 17% had titres high enough to obliterate IFNbeta bioactivity. The frequency of NAbs was similar in patients in the routine testing group compared with the worsening group. Samples showing high titres failed to be associated with worsening of symptoms. The study failed to show low NAb levels in patients responding poorly to IFNbeta. It is concluded that it is not possible to predict NAb status by clinical impression of treatment response. This is likely to be an effect of the partial efficacy of IFNbeta. Thus routine testing for NAbs must be carried out in order to identify NAb status in patients with MS.

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