[Kallmann-de Morsier syndrome: about 3 cases]

Area of Science:

• Genetics
• Endocrinology
• Neurology

Background:

• Kallmann-de Morsier syndrome (KS) is a genetic disorder characterized by hypogonadotropic hypogonadism (gonadotropin-releasing hormone deficiency) and impaired olfaction (anosmia/hyposmia).
• It involves hypoplasia or aplasia of olfactory bulbs, often diagnosed in adolescence due to absent puberty and smell deficits.

Observation:

• Diagnosis can be suspected in early childhood with cryptorchidism and micropenis.
• Magnetic Resonance Imaging (MRI) is crucial for visualizing olfactory bulb and lobe abnormalities.
• Genetic mutations are identified in less than 30% of KS cases, indicating a need for further gene discovery.

Findings:

• This study presents three clinical cases of Kallmann-de Morsier syndrome.
• The cases illustrate the diagnostic challenges and clinical manifestations of KS.
• Hormone therapy is effective for inducing pubertal development and can restore fertility in most patients.

Implications:

• Understanding the genetic basis of KS is essential for improved diagnostics and targeted therapies.
• Early diagnosis and intervention, including hormone replacement, can significantly improve patient outcomes.
• Further research into the genetic underpinnings of KS is warranted to identify novel therapeutic targets.