Trisomy X
MONDO:0018066Trisomy X is a sex chromosome anomaly with a variable phenotype caused by the presence of an extra X chromosome in females (47,XXX instead of 46,XX).
Also known as: 47,XXX, 47,XXX syndrome, Triplo-X syndrome, XXX syndrome, triple X syndrome, trisomy X, trisomy type X, 47 XXX syndrome
11 clinical trials for this condition and its sub-types, 3 tagged with Trisomy X itself.
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Which IVF protocol works best for PCOS? new trial aims to find out
Disease control Recruiting nowThis study compares two common ovarian stimulation protocols used during IVF in women with polycystic ovary syndrome (PCOS). The PPOS protocol uses a progestin hormone to suppress ovulation, while the antagonist protocol uses a different drug. Researchers will track which method …
Sponsor: Hanoi General Hospital (Vietnam) • Aim: Disease control
Last updated Aug 07, 2026 00:00 UTC
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A simple blood draw could one day detect down syndrome in pregnancy
Diagnosis Recruiting nowResearchers are collecting blood samples from pregnant women at higher risk of having a baby with a chromosomal condition. The goal is to develop a noninvasive prenatal test that looks at cell-free DNA in the mother's blood to detect Down syndrome. Participants give blood between…
Sponsor: Sequenom, Inc. • Aim: Diagnosis
Last updated Sep 11, 2026 00:00 UTC
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New prenatal blood test aims to detect genetic disorders without invasive procedures
Diagnosis Recruiting nowThis study is testing a new blood test that looks for fetal cells in the mother's blood to detect genetic conditions like Down syndrome. The test will be compared to standard diagnostic methods such as amniocentesis or newborn testing. The study involves 1,000 pregnant individual…
Sponsor: BillionToOne Inc. • Aim: Diagnosis
Last updated Jun 27, 2026 13:06 UTC
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Social coaching may ease anxiety and autism traits in rare chromosome conditions
Symptom relief Recruiting nowThis trial tests whether a 10-session group program called Social Management Training can improve mental health, executive function, and social skills in adults aged 16 to 69 who have sex chromosome aneuploidies (extra or missing sex chromosomes). Participants complete questionna…
Phase 1 • Sponsor: University of Oslo • Aim: Symptom relief
Last updated Jul 24, 2026 00:00 UTC