Parametric linkage analysis indicated that a susceptibility locus for familial psoriasis was located on chromosome 4q. ... in five further multiplex families using both parametric and non-parametric methods gave significant localisation to chromosome ... Chromosome Mapping, Chromosomes, Human, Pair 4, Female, Genetic Predisposition to Disease, Genome, Human, Haplotypes, Humans, ... Evidence that a locus for familial psoriasis maps to chromosome 4q. Matthews D., Fry L., Powles A., Weber J., McCarthy M., ...