After Hefford's death, the doctors discovered that she had a rare condition called a urea cycle disorder, which affects how the body breaks down protein, according to the New York Post.

But unbeknownst to her, Hefford was suffering from a rare condition called urea cycle disorder (UCD), which is genetic. Roughly one in 8,000 people have UCD but many do not know. The condition ...

However, the 25-year-old had not known that she had urea cycle disorder, a genetic condition that makes it difficult for the body to break down protein and eventually causes a build-up of ammonia ...

By identifying the critical role the urea cycle plays in its development, his findings could pave the way for new medications to treat this currently incurable disease. In a study recently ...

Hyperion Therapeutics' first drug, approved in February by the US Food and Drug Administration, has been welcomed by clinicians as a step forward for people with rare genetic conditions known as ...

This week, James Roper finally cleared the air, disclosing to USA Today Sports that his son died from a rare hereditary condition called urea cycle disorder. Dr. Sujatha Reddy, 11Alive Medical ...