The authors declare no conflict of interest. This study was supported by the DFG Excellence Cluster Inflammation at Interfaces.Sci Int: Jacewicz R, Szram S, Galecki P, Berent J. Will genetic polymorphism of tetranucleotide sequences help in the diagnosis of major psychiatric disorders? Forensic Sci Int: Klintschar M, Reichenpfader B, Saternus KS. A functional polymorphism in the tyrosine hydroxylase gene indicates a role of noradrenergic signaling in sudden infant death syndrome. J Pediatr: Sharma P, Hingorani A, Jia H et al. Positive association of tyrosine hydroxylase microsatellite marker with essential hypertension. Hypertension: Klintschar M, Immel UD, Stiller D, Kleiber M. TH, a tetrameric short tandem repeat locus in the tyrosine hydroxylase gene: association with myocardial hypertrophy and death from myocardial infarction? Dis Markers. Supplementary information accompanies the paper on the European Journal of Human Genetics website (http://www.nature.com/ejhg).