A population-based analysis of progressive multifocal leukoencephalopathy (PML) showed PML frequencies of 5.1% among patients with AIDS and 0.07% among patients with hematologic malignancies, but similar clinical features of PML in both groups. Sequencing of the p53 gene, exon 4, showed heterozygosity (Arg-Pro) at codon 72 in five of six PML patients. These findings indicate that frequencies of non-AIDS- and AIDS-related PML differ markedly but p53 polymorphisms may influence the occurrence of PML in both groups.
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Power et al. (2000) studied this question.
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