Mixed gonadal dysgenesis
MONDO:0001969A type of defective gonadal development in patients with a wide spectrum of chromosomal mosaic variants. Their karyotypes are of partial sex chromosome monosomy resulting from an absence or an abnormal second sex chromosome (X or Y). Karyotypes include 45,X/46,xx; 45,X/46,xx/47,xxx; 46,xxp-; 45,X/46,xy; 45,X/47,xyy; 46,xypi; etc. The spectrum of phenotypes may range from phenotypic female to phenotypic male including variations in gonads and internal and external genitalia, depending on the ratio in each gonad of 45,X primordial germ cells to those with normal 46,xx or 46,xy constitution.
Also known as: gonadal dysgenesis mixed
82 clinical trials for this condition and its sub-types.
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New IVF drug trial halted early: did it help embryo growth?
Disease control TerminatedThis early-stage trial tested whether adding the drug FE999302 to standard IVF hormones could increase the number of high-quality embryos in women undergoing fertility treatment. The study enrolled 310 women aged 18–40 with specific hormone levels. The trial was terminated early,…
Phase: PHASE1 • Sponsor: Ferring Pharmaceuticals • Aim: Disease control
Last updated Jun 27, 2026 12:02 UTC
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Timing of fertility drug may affect egg quality in IVF
Disease control TerminatedThis early-phase study looked at whether giving an extra fertility drug (FE 999302) at different times during ovarian stimulation could improve the number of good-quality embryos in women undergoing IVF. The trial included 106 women with high ovarian reserve and was stopped early…
Phase: PHASE1 • Sponsor: Ferring Pharmaceuticals • Aim: Disease control
Last updated Jun 27, 2026 12:02 UTC
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Does Dad's smoking harm fertility? new study investigates
Knowledge-focused TerminatedThis study looked at how a man's smoking habits might affect a couple's ability to have a baby. Researchers compared fertile and infertile couples, measuring smoking markers like carbon monoxide and cotinine in blood, semen, and hair. The goal was to understand if smoking damages…
Phase: NA • Sponsor: Centre Hospitalier Universitaire, Amiens • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:07 UTC