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Living with Fetal akinesia syndrome, X-linked

A rare genetic condition mostly in males that affects a baby's movement and development before birth.

Understanding Fetal akinesia syndrome, X-linked

Fetal akinesia syndrome, X-linked is a rare genetic condition that affects the movement and development of a baby before birth.

It mostly affects males. It can cause too much amniotic fluid around the baby and reduced movement. Brain development and facial features can also be severely affected.

Signs & symptoms

GARD doesn't list a separate symptom list. Its summary describes:

  • Reduced movement before birth
  • Too much amniotic fluid
  • Differences in brain development
  • Differences in facial features

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
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 rare disease patient organizations for support
  • 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
Which gene is involved in our family, and can it be tested?
What is the chance of this in a future pregnancy?
Which specialists should be involved in prenatal care?

Quick facts

InheritanceX-Linked

It is caused by a change in one gene on the X chromosome. It is X-linked.

Also known as: polyhydramnios, hypokinesia, brain malformations, telecanthus, and narrow palpebral fissures; x-linked form of fetal akinesia syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Fetal akinesia syndrome, X-linkedGARD ID 2293 · 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 Fetal akinesia syndrome, X-linked.

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