IgA vasculitis induced by acenocoumarol.

We present the case of a 73-year-old man with IgA vasculitis after administration of acenocoumarol, confirmed by anatomopathological study. He had cutaneous, joint and renal involvement. With the reintroduction of the drug, the clinical manifestations worsened.

The interplay between natural selection and susceptibility to melanoma on allele 374F of SLC45A2 gene in a South European population.

We aimed to study the selective pressures interacting on SLC45A2 to investigate the interplay between selection and susceptibility to disease. Thus, we enrolled 500 volunteers from a geographically limited population (Basques from the North of Spain) and by resequencing the whole coding region and intron 5 of the 34 most and the 34 least pigmented individuals according to the reflectance distribution, we observed that the polymorphism Leu374Phe (L374F, rs16891982) was statistically associated with skin color variability within this sample. In particular, allele 374F was significantly more frequent among the individuals with lighter skin.

Involvement of ANXA5 and ILKAP in susceptibility to malignant melanoma.

Single nucleotide-polymorphisms (SNPs) are a source of diversity among human population, which may be responsible for the different individual susceptibility to diseases and/or response to drugs, among other phenotypic traits. Several low penetrance susceptibility genes associated with malignant melanoma (MM) have been described, including genes related to pigmentation, DNA damage repair and oxidative stress pathways. In the present work, we conducted a candidate gene association study based on proteins and genes whose expression we had detected altered in melanoma cell lines as compared to normal melanocytes.