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- 저자 : Isabel Esteva (검색결과 2 건)
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Analyses of karyotype by G-banding and high-resolution microarrays in a gender dysphoria population
Rosa Fernández,Antonio Guillamón,Esther Gómez‑Gil,Isabel Esteva,Mari Cruz Almaraz,Joselyn Cortés‑Cortés,Beatriz Lamas,Estefanía Lema,Eduardo Pásaro 한국유전학회 2018 Genes & Genomics Vol.40 No.5
Gender Dysphoria is characterized by a marked incongruence between the cerebral sex and biological sex. To investigate the possible influence of karyotype on the etiology of Gender Dysphoria we carried out the cytogenetic analysis of karyotypes in 444 male-to-females (MtFs) and 273 female-to-males (FtMs) that attended the Gender Identity Units of Barcelona and Málaga (Spain) between 2000 and 2016. The karyotypes from 23 subjects (18 MtFs and 5 FtMs) were also analysed by Affymetrix CytoScan™ high-density (HD) arrays. Our data showed a higher incidence of cytogenetic alterations in Gender Dysphoria (2.65%) than in the general population (0.53%) (p < 0.0001). When G-banding was performed, 11 MtFs (2.48%) and 8 FtMs (2.93%) showed a cytogenetic alteration. Specifically, Klinefelter syndrome frequency was significantly higher (1.13%) (p < 0.0001), however Turner syndrome was not represented in our sample (p < 0.61). At molecular level, HD microarray analysis revealed a 17q21.31 microduplication which encompasses the gene KANSL1 (MIM612452) in 5 out of 18 MtFs and 2 out of 5 FtMs that corresponds to a copy-number variation region in chromosome 17q21.31. In conclusion, we confirm a significantly high frequency of aneuploidy, specifically Klinefelter syndrome and we identified in 7 out of 23 GD individuals the same microduplication of 572 Kb which encompasses the KANSL1 gene.
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The CYP17-MspA1 rs743572 polymorphism is not associated with gender dysphoria
Rosa Fernández,Joselyn Cortés-Cortés,Esther Gómez-Gil,Isabel Esteva,Mari Cruz Almaraz,Antonio Guillamón,Eduardo Pásaro 한국유전학회 2016 Genes & Genomics Vol.38 No.12
Gender dysphoria is commonly thought to arise from discrepant cerebral and genital sexual differentiation. Increasing evidence supports the idea of genetic vulnerability. The purpose of this paper was to investigate whether the polymorphism CYP17-MspA1 rs743572 is associated with gender dysphoria. Fragments that included the rs743572 polymorphism were PCR amplified and digested with MspA1 in 317 MtFs, 223 FtMs, 358 control men and 264 control women. The allele/genotype frequencies were compared between groups, with the 1000 Genomes Data Base and with international literature. Allele and genotype frequencies did not differ significantly between the FtM and female control groups (v2 = 0.631; p = 0.43 and v2 = 2.767; p = 0.25), or between the MtF and male control groups (v2 = 0.105; p = 0.74 and v2 = 0.789; p = 0.67). A2 frequency was higher in the FtM (0.43) than the female control group (0.41), male control group (0.40), or MtF group (0.39), but this difference did not reach statistical significance. Genotype frequencies did not differ significantly between groups (p = 0.66), between genotypes (p = 0.4) or between sexes (p = 0.66). Our data contradict previous findings about the CYP17-MspA1 rs743572 polymorphism and gender dysphoria and concur with the 1000 Genomes Data Base, which shows that the allele frequencies vary between countries and ethnicities but not between sexes. Our data do not support a hypothetical involvement of the rs743572 polymorphism in the genetic basis of gender dysphoria.
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