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DOI: 10.1055/s-0038-1656029
Anti-factor VIII Inhibitors and Lupus Anticoagulants in Haemophilia A Patients
Publication History
Received 21 February 1996
Accepted after resubmission 12 December 1996
Publication Date:
11 July 2018 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00035024/199704/lookinside/thumbnails/10-1055-s-0038-1656029-1.jpg)
Summary
In a study of 170 haemophilia A patients, 43 were found to have an inhibitory effect; seven had anti-factor VIII inhibitors (a-fVIII) (A), 18 had lupus anticoagulants (LAs) with a strong (B: 12) or weak (C: 6) time-dependent effect and 18 had no time-dependent LAs (D). The a-fVIII showed a neutralizing effect only against factor VIII and negative diluted Russell viper venom time (dRVVT). The LAs were diagnosed by dRVVT; the Staclot® LA agreed with the dRVVT. During the study, three patients changed from an a-fVIII to an LA pattern; they also modified their clinical response.
Our prevalence of a-fVIII was low (4%) and we found 21% of LA, with a high (50%) prevalence of time-dependent inhibition. This pattern raises the possibility of the coexistence of LA and a-fVIII, stressing the need to develop specific tests to identify a-fVIII and LA.
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