PT - JOURNAL ARTICLE AU - Evans, D A AU - Harmer, D AU - Downham, D Y AU - Whibley, E J AU - Idle, J R AU - Ritchie, J AU - Smith, R L TI - The genetic control of sparteine and debrisoquine metabolism in man with new methods of analysing bimodal distributions. AID - 10.1136/jmg.20.5.321 DP - 1983 Oct 01 TA - Journal of Medical Genetics PG - 321--329 VI - 20 IP - 5 4099 - http://jmg.bmj.com/content/20/5/321.short 4100 - http://jmg.bmj.com/content/20/5/321.full SO - J Med Genet1983 Oct 01; 20 AB - Debrisoquine and sparteine tests were carried out in 215 random white British subjects. There is a high degree of correlation between the urinary 'metabolic ratios' of the two drugs. New mathematical techniques have been developed (1) to define phenotypes and (2) to identify the genotypes within the dominant phenotype. The members of 15 families were tested with both debrisoquine and sparteine. The results indicate that persons who are 'poor metabolisers' of sparteine are also 'poor metabolisers' of debrisoquine and are autosomal Mendelian recessives.