The Center for Cornelia de Lange Syndrome and Related Diagnoses


At the Center for Cornelia de Lange Syndrome and Related Diagnoses, our team of specialists provides care to children and adults with Cornelia de Lange syndrome (CdLS) and related diagnoses, and their families.

We offer comprehensive evaluations at The Children's Hospital of Philadelphia to address medical issues common to the diagnosis and those based on the child’s history. After the evaluation, we will:

If a visit to the center in Philadelphia is not possible, we offer a “virtual consult.” We will request the same information as if you were coming in person and may interview you by phone. We will evaluate the information, offer our diagnostic impression, and answer any questions you may have.

For more information

Please take a moment to explore our website. You can:

We encourage you to contact the center directly if you have questions or would like more information. Please call Dinah Clark at 215-590-4248 or e-mail

An additional source of information for families is the Cornelia de Lange Syndrome Foundation, an organization that is a great resource for family support and education.

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See How Far We've Come

It's only been three years since the Center for Cornelia de Lange Syndromes and Related Disorders was created at CHOP, yet Center clinicians and researchers have made great strides in becoming a "medical home" for individuals and families with developmental diagnoses. View our 2012 Annual Report.