title: Finger length ratios in Serbian transsexuals.
abstract: Atypical prenatal hormone exposure could be a factor in the development of transsexualism. There is evidence that the 2nd and 4th digit ratio (2D:4D) associates negatively with prenatal testosterone and positively with estrogens. The aim was to assess the difference in 2D:4D between female to male transsexuals (FMT) and male to female transsexuals (MFT) and controls. We examined 42 MFT, 38 FMT, and 45 control males and 48 control females. Precise measurements were made by X-rays at the ventral surface of both hands from the basal crease of the digit to the tip using vernier calliper. Control male and female patients had larger 2D:4D of the right hand when compared to the left hand. Control male's left hand ratio was lower than in control female's left hand. There was no difference in 2D:4D between MFT and control males. MFT showed similar 2D:4D of the right hand with control women indicating possible influencing factor in embryogenesis and consequently finger length changes. FMT showed the lowest 2D:4D of the left hand when compared to the control males and females. Results of our study go in favour of the biological aetiology of transsexualism.
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Svetlana
authors: S
authors: Vujović
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Srdjan
authors: S
authors: Popović
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Ljiljana
authors: L
authors: Mrvošević Marojević
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Miomira
authors: M
authors: Ivović
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Milina
authors: M
authors: Tančić-Gajić
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Miloš
authors: M
authors: Stojanović
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Ljiljana V
authors: LV
authors: Marina
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Marija
authors: M
authors: Barać
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Branko
authors: B
authors: Barać
authors: Faculty of Medicine, University of Banja Luka, Bosnia and Herzegovina.
authors: Milena
authors: M
authors: Kovačević
authors: Clinic for Psychiatry, Clinical Centre of Serbia, Serbia.
authors: Dragana
authors: D
authors: Duišin
authors: Clinic for Psychiatry, Clinical Centre of Serbia, Serbia.
authors: Jasmina
authors: J
authors: Barišić
authors: University Childrens Hospital, Tiršova 10, 11000 Belgrade, Serbia.
authors: Miroslav L
authors: ML
authors: Djordjević
authors: Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Dr Subotića 13, 11000 Belgrade, Serbia.
authors: Dragan
authors: D
authors: Micić
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D005260:Female; D005385:Fingers / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D055771:Serbia; D063106:Transgender Persons; D014189:Transsexualism / Q000209:etiology; D055815:Young Adult