A New Jersey mother and former Rutgers University running star will run the Philadelphia Marathon this weekend to raise awareness for a rare, deadly disease affecting her young son. Belmax De Jesus, of Princeton, is a single mother. Her 8-year-old son Jaxson was diagnosed with Peroxisomal disorders, a rare group of conditions that ravage a person’s body. Jaxson cannot walk or talk and needs constant care. De Jesus says that she started to notice symptoms when Jaxson was 5 years old.