A rare genetic disorder that affects blood vessels, HHT, is due to mutations in two genes that regulate proteins in the endothelial cells lining the blood vessels.

To better understand the disease mechanism, professor of cardiology Anne Eichmann and her co-authors studied the condition in mouse models. They found that deleting the genes in the animals led to vascular malformations similar to those seen in HHT patients. Next, by using a drug to inhibit a protein involved in cell growth (P13 kinase), the researchers reversed the condition in mice.