DNA from two subjects showing anomalous CYP2D6 phenotype-genotype relationships was analysed for the presence of new CYP2D6 mutations by single strand conformational polymorphism (SSCP) analysis. One of these subjects was homozygous for polymorphisms in exon 1 and exon 9 previously detected in Oriental populations and termed the CYP2D6J allele. The… (More)