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Association between apolipoprotein-4 and long-term outcome after traumatic brain injury

¹ Erasmus Medical Centre, Department of Rehabilitation Medicine, Rotterdam, the Netherlands
² Rijndam Rehabilitation Centre, Rotterdam, the Netherlands
³ Erasmus Medical Centre, Department of Epidemiology & Biostatistics, Rotterdam, the Netherlands

Correspondence to:
Drs A H P Willemse-van Son, Erasmus MC, Department of Rehabilitation Medicine, PO BOX 2040, 3000 CA Rotterdam, the Netherlands; a.vanson-willemse{at}erasmusmc.nl

Method: The Glasgow Outcome Scale (GOS), the Sickness Impact Profile-68 (SIP-68) and the Community Integration Questionnaire (CIQ) were assessed in 79 moderate and severe traumatic brain injury patients at 3, 6, 12, 18, 24 and 36 months post injury. Repeated measures analyses of variance were performed with APOE-4 status and time of measurement as independent variables and the GOS, SIP-68 and CIQ as dependent variables. Analyses were adjusted for baseline age, gender and Glasgow Coma Scale.

Results: Patients with the APOE-4 allele had a significantly better global functional outcome on the GOS than patients without the APOE-4 allele. No significant associations were found between APOE-4 status and the SIP-68 and CIQ.

Discussion: In contrast to other studies, we found that carrying the APOE-4 allele had a protective influence on outcome. Multiple mechanisms, and in some cases competitive mechanisms, may explain the variable relation between the APOE-4 allele and outcome after traumatic brain injury.

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				T. W Teasdale The apolipoprotein-{varepsilon}4 gene: always harmful? J. Neurol. Neurosurg. Psychiatry, April 1, 2008; 79(4): 364 - 365. [Full Text] [PDF]