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Methylmalonic acidemia (MMA) is a genetic condition caused by a faulty gene.
Children with MMA lack a protein that the body needs to break down fats and cholesterol inside cells. These substances build up in cells, causing damage to the brain, liver, kidneys, and other organs.
MMA symptoms may include:
Children with MMA do not gain weight and grow as expected to.
Chief of Genetic and Genomic Medicine
Dr. Vockley is a global leader in inborn errors of metabolism treatment and research. He’s also a founder of the North American Metabolic Academy.
If your child has MMA, we want you to know you're not alone. The Center for Rare Disease Therapy (CRDT) at UPMC Children's Hospital of Pittsburgh is here to help.
Here’s what you can expect when you come to us for your child’s MMA consult.
Your first visit to the CRDT should take about 4 to 6 hours. Your child will receive a thorough exam from one of the center's doctors.
The doctor will make or confirm a MMA diagnosis and find out how much it has progressed.
Because we work as a team at the center, other doctors and staff might see your child during your visit.
These may include a:
Members of your child's care team will talk with you about:
By the end of your visit, you'll have a MMA care plan tailored to your child's needs. We'll also schedule a follow-up visit.
You'll meet our nurse practitioner. You can contact them by phone or video conference with any concerns before your next visit.
Before you leave, please ask us about your child's MMA diagnosis, treatment, or anything else on your mind.
We'll call within 2 weeks to review the test results and the next steps for your child's MMA care.
You can also find your child's test results by logging into MyCHP — Children's patient portal.
MyCHP lets you manage your child's health online. It's free for kids getting treatment at Children's and their loved ones.
A child with a rare disease like MMA affects the whole family. We see each family member as our partner at the Center for Rare Disease Therapy.
The best care happens when we merge our MMA expertise with your knowledge of your child's needs.
Learn how others are finding help and hope for their child’s rare disease through the expertise at UPMC Children’s.
View Center for Rare Disease Therapy patient stories »
At the CRDT, every child diagnosed with a rare disease receives a tailored treatment plan and family-centered care.
For an appointment, consult, or referral, contact us:
We’ll be in touch within 2 business days.
Children's Hospital's main campus is located in the Lawrenceville neighborhood. Our main hospital address is:
UPMC Children’s Hospital of Pittsburgh One Children’s Hospital Way 4401 Penn Ave. Pittsburgh, PA 15224
In addition to the main hospital, Children's has many convenient locations in other neighborhoods throughout the greater Pittsburgh region.
With MyCHP, you can request appointments, review test results, and more.
For questions about a hospital bill call:
To pay your bill online, please visit UPMC's online bill payment system.
Interested in giving to Children's Hospital? Support the hospital by making a donation online, joining our Heroes in Healing monthly donor program, or visiting our site to learn about the other ways you can give back.