Prognostic value of platelet derived growth factor alpha receptor expression in grade 2 astrocytomas and oligoastrocytomas
2002 (English)In: Journal of Neurology, Neurosurgery and Psychiatry, ISSN 0022-3050, E-ISSN 1468-330X, Vol. 72, no 6, 782-787 p.Article in journal (Refereed) Published
To determine whether the expression of platelet derived growth factor alpha receptor (PDGFRalpha) in low grade astrocytomas and oligoastrocytomas is associated with survival.
Formalin fixed and paraffin embedded tumour samples of 40 consecutive patients with supratentorial diffuse astrocytomas and oligoastrocytomas of WHO grade 2, resected between 1986 and 1993, were used for immunohistochemical staining. The fraction of tumour cells expressing PDGFRalpha protein was quantified and entered into univariate and multivariate survival analyses. Changes in PDGFalpha expression over time were analysed in seven patients in whom reoperations had been performed.
Patients with a relatively high fraction of PDGFRalpha expressing cells had a more favourable outcome in both univariate (p = 0.04) and multivariate analyses (p = 0.02). Expression of PDGFRalpha was greater in oligoastrocytomas than in astrocytomas (p = 0.05). In four reoperated patients with histologically confirmed malignant transformation, there was a marked decrease in the number of cells expressing the receptor.
There is an association between high PDGFRalpha expression and long survival time in patients with grade 2 astrocytomas and oligoastrocytomas. The findings suggest that expression of the receptor may be a useful prognostic marker in such patients.
Place, publisher, year, edition, pages
2002. Vol. 72, no 6, 782-787 p.
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:uu:diva-219328DOI: 10.1136/jnnp.72.6.782PubMedID: 12023424OAI: oai:DiVA.org:uu-219328DiVA: diva2:699225
De två första författarna delar förstaförfattarskapet.2014-02-262014-02-262014-02-27Bibliographically approved