Low levels of JAM-A protein associated with Crohn's

UPI have a very brief article that includes researchers definitively stating that Crohn's disease is "linked to low levels of a protein that helps bind the stomach lining". They go on:

The scientists say that the stomach lining helps keep out bacteria that cause Crohn's, an inflammation that can involve any part of the digestive tract from the mouth to the anus. They found that patients with Crohn's and similar diseases have low levels of a protein known as JAM-A in their stomach linings.

This is the limit of technical details in the article. The full research should appear shortly in the journal Gastroenterology.