Little Hearts Big Hopes

Dr. Grossfeld with one of his patients with congenital heart disease. 

Jacobsen Syndrome is a rare genetic disorder caused by the loss of a part of the 11th human chromosome. The loss of this genetic material causes a number of significant problems that occur commonly in the general population including congenital heart defects, a congenital bleeding disorder, intellectual disability, autism, and immunodeficiency. Although Jacobsen syndrome is very rare, occurring in only about 1 in 50,000 live births, the insights gained from research on Jacobsen syndrome will help those in the general population that have these same problems.

If you know someone who has a child or loved one with Jacobsen syndrome please let them know about Dr. Grossfeld's research, as well as the 11q Research and Resource Group (, a support group for children and their families that have disorders of chromosome 11 

8th Annual Little Hearts Big Hopes fundraiser at the Grammy Museum:

The Fundraiser took place on April 30th, 2016 at the Grammy Museum. It featured child prodigy musician Ethan Bortnick. Ethan has a younger brother, Nathan, who was born with hypoplastic left heart syndrome. The master of ceremonies was actress/philanthropist Jennifer Morrison.  It was a fabulous event, and helped raise money to support Dr. Grossfeld's research. 


Dr. Grossfeld with Master of Ceremonies Jennifer Morrison


Child prodigy Ethan Bortnick performing