OpenApp supports Metachromatic Leukodystrophy Disease MLD Research

OpenApp Rare disease day

To celebrate Rare Disease Day 2023, which takes place on the 28th of February, we are changing our colours and showing our support for the Metachromatic Leukodystrophy Disease (MLD) Support Association UK. OpenApp have been working MLD support Association UK for many years under our Rare100 CSR scheme, a Corporate Social Responsibility (CSR) initiative run in 2018.

Metachromatic Leukodystrophy Disease

MLD is an ultra-rare disease usually first presenting in patients under 2 years old. Its incidence rate is roughly 1 in 40,000 of live births, but with increased developments in diagnostic tools this figure is expected to increase. The cause of MLD has been pinpointed directly to a deficiency in Arylsulfatase-A, an enzyme which prevents the build up of enzyme sulfatides, a deficiency leads to destruction and degradation of the myelin sheath, resulting in improper nerve function in the brain and periphery nerves.

Lipid metabolism is part of the body's metabolic needs (e.g., energy production). Similar to other genetic disorders that impact the lipid metabolism, there are multiple categories of MLD. These respective forms of the conditions differ in the age they manifest.

The most prevalent form of MLD is 'Late Infantile MLD' with sufferers exhibiting difficult walking, and displaying abnormal and/or erratic movement patterns when they are in motion. Late Infantile MLD is the most common, accounting for 50%-60% of cases of MLD.

Early and Late Juvenile MLD affects those in the 3-16 years old age bracket, with suffers showing difficulties with fine motor skills. They may also exhibit behavioural problems in school environments.

The final and rarest form is Adult MLD, it displays through slow and gradual decline of intellectual and cognitive capacity. Unfortunately this category of MLD is often misdiagnosed as a psychiatric illness resulting in inappropriate care and treatment. If you wish to learn more about the condition and its manifestations, please visit:

Recent MLD Developments - And A Big Celebration

While historically there has been no cure for MLD, a recent groundbreaking breakthrough in gene therapy has resulted in the first case of MLD being cured. This is a landmark case, a 19 month year old girl is now completely cured of MLD, after she was treated with the gene therapy drug, Libmeldy, designed by Orchard Therapeutics: Gene Therapy MLD.

As a company that has been involved with rare disease registries since 2012, we see how hard representatives from rare disease patient organisations advocate for their community, so it is wonderful when the rare disease community has cause to celebrate. With the advent of gene therapy and increased data collection for rare diseases, we look forward to more good news stories like this.

Rare Disease Day 2023 - Support MLD

Rare Disease Day is a globally-coordinated movement working towards equity in social opportunity, healthcare, and access to diagnosis and therapies for people living with a rare disease.  Join us in raising awareness for MLD and Rare Disease Day by donating and sharing this uplifting story!  Donate here

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We’re so happy with our video from the weekend @rarediseaseday event in Waterford courtesy of @TheArtHand music from Irish musician Banba

We will continue to raise awareness of rare diseases in Ireland & highlight the unmet needs of the #rarecommunity


Today is #rarediseaseday2023 a very important date for both Rare Disease Awareness and Advocacy! There are over 6000 known rare diseases today, affecting 300 million people around the world.


In light of #rarediseaseday tomorrow we want to raise awareness for such an important day of the year.

We have been involved extensively with Rare Disease since 2012, knowing how hard the Rare Disease Community works to advocate for those in need:

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