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Living with Mikati-Najjar-Sahli syndrome

A rare inherited syndrome with a small head, short stature, delayed puberty from low hormone activity, and distinctive facial features.

Understanding Mikati-Najjar-Sahli syndrome

Mikati-Najjar-Sahli syndrome is a rare inherited syndrome with a small head, short stature, and underactive reproductive glands.

It includes a small head (microcephaly), short stature, and hypergonadotropic hypogonadism, which means the reproductive glands do not work as they should even though the body signals for them to. People also have certain facial features, such as a narrow forehead, joined eyebrows, and a small jaw. Signs are seen in the newborn period or infancy.

Signs & symptoms

GARD doesn't list a set of most common symptoms for this condition. Its summary describes these features:

  • Smaller-than-average head size (microcephaly)
  • Short stature
  • Underactive reproductive glands (hypogonadism)
  • Narrow forehead
  • Joined eyebrows
  • Small lower jaw (micrognathia)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include genetic specialists, hormone specialists and urinary and male reproductive system specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Resolve: The National Infertility Association may keep lists of experts for this condition.

Care & treatment

Care team
Genetic specialists (geneticists); Hormone specialists (endocrinologists); Urinary and male reproductive system specialists (urologists)
Expert care
Expert lists: Resolve: The National Infertility Association
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Resolve: The National Infertility Association
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Should a hormone specialist (endocrinologist) be involved?
How will puberty and growth be monitored?
Is genetic testing available for this syndrome?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive

Changes in genes (also called variants) cause this syndrome, and it is inherited in an autosomal recessive way. This means a child inherits a changed copy of the gene from each parent.

GeneticEndocrine

Also known as: microcephalus, hypergonadotropic hypogonadism, short stature syndrome; microcephaly-hypergonadotropic hypogonadism-short stature syndrome; mikati najjar sahli syndrome

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Mikati-Najjar-Sahli syndromeGARD ID 3617 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Mikati-Najjar-Sahli syndrome.

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