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- W2022078375 abstract "Context: Differentiation of testicular tissue in 46,XX individuals is seen either in XX males, the majority of them with SRY gene, or in individuals, usually SRY(−), with ovotesticular disorder of sex development (OT-DSD). Although they are sporadic cases, there are some reports on familial recurrence, including coexistence of XX maleness and OT-DSD in the same family. Objective: We report on a case of SRY(−) 46,XX monozygotic twins with genital ambiguity. Methods: Hormonal evaluation included testosterone, FSH, and LH measurements. SRY gene was investigated by PCR and two-step PCR in peripheral leukocytes and gonadal tissues, respectively. Direct DNA sequencing of the DAX-1 coding sequence was performed. Real-time PCR for SOX9 region on chromosome 17 was obtained. Results: Both twins had a 46,XX karyotype. Twin A had a 1-cm phallus with chordee, penoscrotal hypospadias, and palpable gonads. Serum levels of FSH (2.34 mIU/ml), LH (8.8 mIU/ml), and testosterone (1.6 ng/ml) were normal, and biopsies revealed bilateral testes. Twin B had a 0.5-cm phallus, perineal hypospadias, no palpable gonad on the right, and a left inguinal hernia. Hormonal evaluation revealed high FSH (8.2 mIU/ml) and LH (15 mIU/ml) and low testosterone (0.12 ng/ml). Upon herniotomy, a right testis (crossed ectopia) and a small left ovotestis were found. SRY gene was absent in both peripheral leukocytes and gonadal tissue samples. Neither DAX-1 mutations nor SOX9 duplication was identified. Conclusions: This case provides evidence that both XX maleness and XX OT-DSD are different manifestations of the same disorder of gonadal development." @default.
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- W2022078375 date "2008-02-01" @default.
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- W2022078375 title "XX Maleness and XX True Hermaphroditism in<i>SRY</i>-Negative Monozygotic Twins: Additional Evidence for a Common Origin" @default.
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- W2022078375 doi "https://doi.org/10.1210/jc.2007-1115" @default.
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