Tetrasomy X is a sex chromosome anomaly caused by the presence of two extra X chromosomes in females (48,XXXX instead of 46,XX).
Comprehensive, easy-to-understand information about this condition
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blepharophimosis, ptosis, and epicanthus inversus syndrome
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congenital lipoid adrenal hyperplasia due to STAR deficency
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ataxia telangiectasia
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classic galactosemia
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46 XX gonadal dysgenesis
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premature ovarian failure 2A
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