What is Dias-Logan syndrome?
Understanding Dias-Logan syndrome
A rare genetic disease...
but above all children, families, and
unique routes
A rare genetic disease
neurodevelopment
Dias-Logan syndrome, also known as BCL11A-IDD, is a rare genetic disease linked to an abnormality of the BCL11A gene .
This gene plays a key role in brain development and in the organization of essential neurological functions. It is involved in particular in the regulation of the expression of other genes, in the maturation of neurons and in the organization of certain neurological circuits.
When it is impaired, it can disrupt the child's overall development, particularly functions related to communication, motor skills, learning, and behavior regulation.
The syndrome is one of the neurodevelopmental disorders , meaning that it impacts how the brain develops and functions from the earliest years of life.
However, the expression of the syndrome is highly variable.
Some children have significant difficulties, while others have a more moderate profile.
This variability sometimes makes the syndrome difficult to identify and understand, especially at the time of diagnosis.
Today, scientific knowledge remains limited .
The number of reported cases is small and the available data continues to evolve thanks to ongoing research and clinical observations.
What are the symptoms of Dias-Logan syndrome?
Dias-Logan syndrome (BCL11A-IDD) can cause manifestations
highly variable from one child to another.
There is no single profile, nor a single way for the syndrome to express itself.
Some children experience significant difficulties from the earliest years of life, while
while others evolve with a more moderate profile.
This variability sometimes makes the syndrome difficult to identify, understand and explain.
In most cases, the syndrome impacts several aspects of the child's development.
Engine development
In terms of motor skills, we can observe a delay in certain acquisitions, such as sitting, walking, balance or coordination.
Hypotonia (lower muscle tone) is frequently observed.
It can make certain everyday tasks more difficult and require more effort from the child.
Language and communication
Language and communication are often affected.
Some children speak late, use few words, or have difficulty constructing sentences.
Others understand more than they can express.
Communication can then take place through other means: gestures, looks, pictograms, routines or behavior.
Learnings
The syndrome can also have an impact on learning.
Development is often slower, requiring repetition, support, and adaptations.
Some children have intellectual disabilities of varying severity.
Behavior and Interactions
Certain behavioral peculiarities may be present:
agitation or impulsiveness
difficulty concentrating
repetitive behavior
important need for reference points
anxiety
difficulties managing emotions
In some cases, autism spectrum disorders may be associated.
Sensory sensitivity and fatigue
Sensory hypersensitivities are frequently observed.
Noise, light, certain textures or changes in environment can be difficult to tolerate.
This can lead to discomfort, intense reactions, or a need for withdrawal.
Fatigue is also an important reality.
Seemingly simple actions can require a lot of energy: concentrating, speaking, understanding, interacting, or simply keeping up with the pace of a day.
Other possible manifestations:
Other manifestations may be observed depending on the child:
microcephaly
brain abnormalities
sleep disorders
eating disorders
attention deficit
epilepsy in some cases
Visual disturbances may also be present, such as strabismus (misalignment of the eyes), which can impact visual coordination and spatial perception.
We can also observe a persistence of fetal hemoglobin (HbF), linked to the role of the BCL11A gene in the regulation of hemoglobin production.
This biological characteristic is specific and is usually detected during blood tests.
It does not necessarily cause visible symptoms on a daily basis, but it is an important element for the diagnosis and understanding of the syndrome.
A unique reality for each child
Not all children exhibit all of these symptoms.
Their frequency, intensity, and evolution can be very different.
Dias-Logan syndrome is not simply defined by a fixed list of medical signs.
This is a complex reality, affecting development, learning, interactions, fatigue, autonomy, and family life as a whole.
Behind these symptoms, there are above all only children, with their strengths, their difficulties, their progress... and families who learn every day to move forward with them.