Faivre L, Cormier-Daire V, Lapierre JM, et al. Deletion of the SIM1 gene (6q16.2) in a patient with a Prader-Willi-like phenotype (J Med Genet 2002;39:594–96). An erratum has been detected in the reverse primer sequence used for amplification of the intragenic microsatellite polymorphic marker of the SIM1 gene. The sequence should read 5′-CTCTCCTGCCTGCTGATC-3′ instead of 5′-GATCAGCAGGCAGGAGAG-3′.