Kallmann syndrome

MONDO:0018800

Kallmann syndrome (KS) is a developmental genetic disorder characterized by the association of congenital hypogonadotropic hypogonadism (CHH) due to gonadotropin-releasing hormone (GnRH) deficiency, and anosmia or hyposmia (with hypoplasia or aplasia of the olfactory bulbs).

Also known as: Olfacto-genital pathological sequence, congenital hypogonadotropic hypogonadism with anosmia, hypogonadotropic hypogonadism with anosmia

3 clinical trials for this condition and its sub-types, 3 tagged with Kallmann syndrome itself.

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Where it sits in the disease tree

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↑ Syndromic disease (7133) ↑ Hypogonadotropic hypogonadism (99)

Sub-types of Kallmann syndrome

Hypogonadotropic hypogonadism 1 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 11 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 14 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 15 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 16 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 17 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 18 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 19 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 2 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 20 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 21 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 22 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 3 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 4 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 5 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 6 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 8 with or without anosmia 0 trials
Hypogonadotropic hypogonadism 9 with or without anosmia 0 trials

Including sub-types (3) Tagged with Kallmann syndrome (3)

Trials to join now! 1 Completed 2

Scientists hunt for genes behind puberty problems

Knowledge-focused Recruiting now

This study aims to understand how reproductive disorders, such as delayed or early puberty, are inherited. Researchers will collect blood samples and medical histories from 850 people with these conditions and their family members. No treatment is provided; the goal is to identif…

Sponsor: National Institute of Environmental Health Sciences (NIEHS) • Aim: Knowledge-focused

Last updated Jul 30, 2026 00:00 UTC

Kallmann syndrome

Where it sits in the disease tree

Scientists hunt for genes behind puberty problems