A. Hinney et al., No evidence for an involvement of alleles of polymorphisms in the serotonin(1D beta and 7) receptor genes in obesity, underweight or anorexia nervosa, INT J OBES, 23(7), 1999, pp. 760-763
The serotonergic (5-hydroxytryptamine, 5-HT) system has been implicated in
body weight regulation and in the etiology of anorexia nervosa (AN). Here w
e describe the screening of the known Phe-124-Cys polymorphism in the 5-HT1
D beta receptor gene and of the known Pro-279-Leu polymorphism in the 5-HT7
receptor gene. For association tests allele frequencies were compared betw
een up to 393 extremely obese children and adolescents, 142 underweight stu
dents and 84 patients with AN. None of the association tests revealed nomin
al P-values below 0.3. We conclude that a major role of the investigated po
lymorphisms in body weight regulation or AN appears unlikely.