
Meet the team who made history treating Nicholas at the Leukodystrophy Center of Excellence at CHOP.
OUR MISSION
A community built for MLD families
We are a global network of patients, families, advocates and physicians dedicated to helping families impacted by metachromatic leukodystrophy (MLD). We connect you with resources, information, peer support, and the world's leading specialists — wherever you are in your journey.
Where do you need help?
We can help

We invite you to be a part of our monthly online zoom support group for newly diagnosed MLD families!
Lenmeldy / Libmeldy
Who is a candidate for gene therapy?
Candidates are specifically children with infantile and juvenile forms of MLD who meet strict clinical and genetic criteria per FDA-approved indications.
Eligible patients
May qualify
-
Pre-symptomatic late infantile (PSLI): expected onset at or before 30 months, no neurological symptoms yet
-
Pre-symptomatic early juvenile (PSEJ): expected onset between 30 months and 7 years, no symptoms
-
Early symptomatic early juvenile (ESEJ): onset between 30 months and 7 years, still walking independently or showing only minor findings like abnormal reflexes
Not eligible
Not indicated
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Patients with significant motor or cognitive decline — gene therapy cannot repair existing brain damage
-
Adult-onset and late juvenile forms — no clinical trials for safety and efficacy in these groups yet
-
Gene therapy offered outside approved centers in the US or Europe — contact Cure MLD with questions
Understanding the disease
What is metachromatic leukodystrophy?
MLD is a rare genetic disorder that affects the brain, peripheral nerves, and gallbladder. It belongs to a group of conditions called leukodystrophies that damage the brain's white matter.
WHEN BOTH PARENTS ARE CARRIERS,
THEIR CHILD HAS A
1 IN 4 CHANCE
OF HAVING MLD
APPROXIMATELY
3,600
Babies
ARE BORN WITH MLD EACH YEAR.


EARLY SYMPTOMS OF MLD INCLUDE:
-
TROUBLE WALKING
-
IMPAIRED SPEECH
-
MUSCLE WEAKNESS
LATE INFANTILE MLD
IS USUALLY DETECTED BEFORE THE AGE OF
30
MONTHS
Common questions
Frequently asked questions
Help us support MLD families
Every gift to the Calliope Joy Foundation supports Cure MLD's work connecting families with information, specialists, and each other. The Carr-Kefalas family's bake sales launched this philanthropy in 2013 — and it helped create the world-renowned Leukodystrophy Center of Excellence at CHOP.















