Your browser does not support javascript:   Search for gard hereSearch for news-and-events here.


Genetic and Rare Diseases Information Center (GARD)

Print friendly version

Adenylosuccinase deficiency

Other Names for this Disease
  • Adenylosuccinate lyase deficiency
  • ADSL deficiency
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.


Adenylosuccinase deficiency is a rare, inherited metabolic condition that results from a lack of the enzyme adenylosuccinate lyase. Signs and symptoms vary greatly from person to person. In general, affected individuals may have a mix of neurological symptoms, which usually includes abnormalities with cognition and movement, autistic features, epilepsy, muscle wasting, and feeding problems. Although less common, abnormal physical features can include severe growth failure, small head, abnormally shaped head, strabismus, small nose with upturned nostrils, thin upper lip, and low set ears. Adenylosuccinase deficiency is caused by mutations in the ADSL gene and is inherited in an autosomal recessive fashion.[1]
Last updated: 9/8/2011


  1. Adenylosuccinate lyase deficiency. National Organization for Rare Disorders (NORD). 2010; Accessed 9/8/2011.
Your Questions Answered
by the Genetic and Rare Diseases Information Center

1 question(s) from the public on Adenylosuccinase deficiency have been answered. See questions and answers. You can also submit a new question.

Basic Information

  • The National Organization for Rare Disorders (NORD) is a federation of more than 130 nonprofit voluntary health organizations serving people with rare disorders. Click on the link to view information on this topic.

In Depth Information

  • The Online Mendelian Inheritance in Man (OMIM) is an catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs.  Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Adenylosuccinase deficiency. Click on the link to view a sample search on this topic.


  • The Autism Speaks has developed a new Video Glossary, an innovative web-based tool designed to help parents and professionals learn more about the early red flags and diagnostic features of autism spectrum disorders (ASD). This glossary contains more than 150 video clips and is free of charge.