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Tetrasomy X

MONDO:0019525

Tetrasomy 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

9 clinical trials for this condition and its sub-types.

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Broader categories

Disease (680) Infertility disorder (336) Hereditary disease (176) Female infertility (100) Endocrine system disorder (72) Primary ovarian failure (48) Female reproductive system disorder (27) Ovarian dysfunction (26) Hereditary endocrine growth disease (24) Reproductive system disorder (15)

Trials to join now! 3 Not yet recruiting 1 Not yet finished but already full! 2 Completed 3

IVF Needle-Free? oral pill tested as injection alternative

Disease control Not yet recruiting

This trial tests whether an oral medication called linzagolix can replace daily injections used to prevent premature ovulation during in vitro fertilization (IVF). The study compares the number of mature eggs retrieved in women taking the pill versus those receiving standard inje…

Sponsor: Centro A.M.B.R.A. (Associazione Medici e Biologi per la Riproduzione Assistita) • Aim: Disease control

Last updated Aug 05, 2026 00:00 UTC