Tetrasomy X
MONDO:0019525Tetrasomy X is a sex chromosome anomaly caused by the presence of two extra X chromosomes in females (48,XXXX instead of 46,XX).
Also known as: 48,XXXX syndrome, quadruple X, tetra X, tetrasomy type X, 48 XXXX, 48 XXXX syndrome
11 clinical trials for this condition and its sub-types, 0 tagged with Tetrasomy X itself.
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