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What is GRIN Disorder?

Mar 01st, 2024 | by Monique Khattar

Monique Khattar

March 01st, 2024

What is GRIN Disorder?

GRIN “Glutamate Receptor Ionotropic NMDA-associated’’ disorder is a term that refers to a group of rare genetic neurodevelopmental disorders caused by variations in genes that encode proteins important for synaptic function, impacting brain function and development. These disorders are associated with mutations in genes such as GRIN1, GRIN2A, GRIN2B, GRIN2D, and GRIN3A.

What is the Cause of GRIN Disorder?

GRIN disorders are caused by variations (mutations) in genes that encode proteins important for synaptic function, particularly those involved in the function of NMDA receptors. NMDA receptors are a type of glutamate receptor that plays a crucial role in synaptic transmission and neuronal communication in the brain. In most children with GRIN Disorder, this mutation occurs spontaneously and is not inherited. In rare cases, the GRIN1 variant has been passed on from an asymptomatic parent.

What Are Some Challenges Children with GRIN Disorder May Face?

What Are Some Treatment Options for GRIN Disorder?

Early intervention and collaboration with a multidisciplinary team can help a child reach their full potential.

  • Physiotherapy may focus on improving mobility, transitions, muscular strength, endurance and coordination.
  • Occupational therapy may target improving fine motor skill development, upper limb strength and function to support activities of daily living, such as self-feeding and dressing.
  • Speech and language pathology may support increasing speech intelligibility (i.e., ability to be understood), developing expressive (i.e., using) and receptive (i.e., understanding) language. This may be done through the use of an augmentative and alternative communication (AAC) device.

About NAPA Centre 

NAPA Centre provides paediatric therapy services to children diagnosed with GRIN disorder. Learn more about treatment options in this blog post.NAPA specialises in working with children with physical and neurological delays. In addition to working with children with more common diagnoses such as cerebral palsy and Down syndrome, NAPA has a special interest and expertise with children with rare, multiple and complex conditions. NAPA Centre’s Intensive Model of Therapy (IMOT) is world-renowned, and one of the leading clinics in Australia for paediatric therapy programs with a large multi-discliplinary team of Occupational Therapists, Physiotherapists and Speech Therapists all working together. Families routinely travel from all parts of Sydney, the NSW region, from across Australia and even from the Australasian region to access NAPA’s unique and effective programs for their children.

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