Understanding Oliver-McFarlane Syndrome (OMS)

If you have recently learned that your child has Oliver-McFarlane Syndrome (OMS), you may feel overwhelmed by the rarity of the diagnosis. It is often called Trichomegaly-retina pigmentary degeneration-dwarfism syndrome, a name that reflects its primary physical features, though “dwarfism” and “growth retardation” are historical terms; today, doctors use “short stature” or “poor growth” ^[1][2]. Finding information can be difficult because OMS is extremely rare; published reports remain limited, and underdiagnosis is highly possible ^[2][3].

This syndrome is part of a spectrum of conditions caused by changes in a specific gene. Your experience is valid: navigating a condition this rare requires specialized care and a team of doctors who are willing to learn alongside you.

The Commonly Reported Features of OMS

Oliver-McFarlane Syndrome is defined by four commonly reported features. While every child’s experience is unique, these features are the most common signs used to identify the condition. Not every person has all four features, and while trichomegaly, retinal disease, and poor growth may be early findings, hypogonadotropic hypogonadism often becomes apparent around puberty.

1. Trichomegaly (Long Eyelashes): This is often the first sign parents notice. Trichomegaly refers to eyelashes that are unusually long, thick, and dark ^[1][4]. Some children may also have sparse or thin hair on their scalp or eyebrows ^[2].
2. Chorioretinal Degeneration (Vision Loss): This is a progressive condition affecting the retina (the light-sensitive layer at the back of the eye) and the choroid (the layer of blood vessels behind it) ^[5]. It can lead to difficulties with night vision or a gradual loss of peripheral vision ^[2][6].
3. Short Stature (Poor Growth): Most children with OMS experience significant delays in growth and are much shorter than other children their age ^[1][5].
4. Pituitary Hormone Deficiencies: The pituitary gland is a small “master gland” at the base of the brain that controls growth, metabolism, and development. In OMS, this gland may not produce enough hormones, such as growth hormone or gonadotropins (which control puberty) ^[1][7].

The PNPLA6 Connection

Researchers have discovered that OMS is caused by mutations in the PNPLA6 gene ^[3]. This gene provides instructions for making a protein called neuropathy target esterase (NTE), which helps maintain the balance of fats (phospholipids) in cell membranes ^[8].

OMS is an autosomal recessive disorder ^[3]. This means a child must inherit two altered copies of the PNPLA6 gene—one from each parent—to have the syndrome. Parents are typically “carriers,” meaning they have one altered gene and one healthy gene, and they usually do not show any symptoms of the condition themselves ^[3][2].

Part of a Spectrum

It is helpful to know that OMS is not an isolated, “one-off” mystery. It belongs to a family of PNPLA6-related disorders ^[9]. Depending on the specific mutations and how they affect the body, these disorders can look slightly different and have different names, such as:

• Boucher-Neuhäuser Syndrome (similar eye and hormone issues, but with balance problems).
• Gordon-Holmes Syndrome (focuses more on balance and movement).
• Laurence-Moon Syndrome ^[10][11].

Because these conditions overlap, your child’s doctors may use these terms as they work to understand your child’s specific needs.

What to Expect in Care

Because OMS affects multiple systems, your child will likely see several specialists. While there is currently no cure for the underlying genetic change, many of the symptoms can be managed to improve your child’s quality of life.

• Growth and Hormones: An endocrinologist (hormone specialist) will monitor your child’s height and hormone levels. Some children see an improvement in growth when treated with recombinant human growth hormone, if indicated ^[1][12].
• Vision Support: A pediatric ophthalmologist (eye doctor) will perform regular exams to monitor the health of the retina. Specialized imaging, like Optical Coherence Tomography (OCT), helps doctors see changes in the layers of the eye early on ^[13][6].
• Developmental Monitoring: Some children may experience delays in reaching milestones like walking or speaking, while others may have no cognitive issues at all ^[7][2]. Early intervention and physical or speech therapy can be very beneficial if these delays occur.

The rarity of this syndrome means that your child’s medical journey may feel like uncharted territory. However, identifying the PNPLA6 connection has allowed doctors to move away from guesswork and toward a more focused approach to monitoring and supporting your child’s health.