Association of Apolipoprotein E Polymorphism with Lipoprotein Glomerulopathy

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Abstract
Two cases of lipoprotein glomerulopathy with a new apolipoprotein E (Apo E) genotype, Ε3/Ε4, were diagnosed recently. These 2 cases, together with other cases documented in English literature made a total of 6 common isoforms of Apo E encountered in lipoprotein glomerulopathy. Although the calculated allele frequency of Ε2 is relative high in cases with lipoprotein glomerulopathy as compared with that in the general population (39.3 vs. 6.4–11.4%), the gradual emergence of Apo E isoforms other than E2/E3 in lipoprotein glomerulopathy implicates that the genetic susceptibility of certain Apo E isoforms may not be a crucial factor. An alteration in the local environment of glomerular capillaries may be more important in the pathogenesis of lipoprotein glomerulopathy.