HOUSTON --An autopsy report says a 4-year-old boy who collapsed while playing soccer in suburban Houston had a genetic heart disorder. The report by the Harris County Institute of Forensic Sciences obtained Thursday by The Associated Press says Cade Carpenter died of hypertrophic cardiopmyopathy. That is a genetic disorder that causes the heart, or parts of it, to become inflamed or enlarged, making it difficult for blood to flow. Carpenter collapsed at soccer practice on April 20. He was pronounced dead a few hours later at a hospital. Paramedics performed CPR and used an automatic external defibrillator to try to restart his heart.