CPS1 deficiency, a rare genetic disorder affects one in 1.3 million babies. Only half of babies diagnoses with this disorder make it past the first week. If they do survive that long they would have severe mental and developmental delays and eventually need liver transplants. Their bodies are unable to rid themselves of ammonia, a byproduct of protein metabolism which build up in the blood and crosses into the brain. However, KJ’s parents decided to try something new. In New York Time’s article Baby Is Healed With World’s First Personalized Gene-Editing Treatment, Baby KJ was reported to be the first recipient in the world to receive a custom gene editing treatment. KJ’s treatment was customized so CRISPR, a gene editing tool that finds and cuts specific sequences, found just his single point mutation causing this fatal genetic disorder. Every treatment he receives requires a lower and lower dose. Now over 9 ½ months old and thriving, KJ’s trial opens the door to vast possibilities in gene editing field.
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I really enjoyed reading this article, and found this case so fascinating. While it has always been known that there is great possibility in CRISPER technology, the case of baby KJ opens a whole new door of possibilities in the future of gene editing. Not only did they locate his genetic point mutation, but the technology was actually able to successfully edit the fatal mutation. This success is a huge win for genetic editing research and gives hope for the families of babies who are diagnosed with this rare genetic disorder.
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