Andy's chromosome SNP array showed that he is missing a small piece of DNA on chromosome 9 (formally designated as deletion 9q22.2, 600kb, containing two known genes). This finding may be the cause of Andrew's delays, and physical and mental impairments. It could also be a polymorphism, which is a chromosomal change that is often family specific and doesn't cause a disease. My husband and I will have to give blood samples to see if we are also missing these genes. If we are not missing them, then it may be labelled as the main cause of Andy's problems.
Andy has a lot of trouble learning, and remains very infantile. When I search for this deletion online, I find other children who are also impaired like Andy. Some of them took a long time to learn how to walk, but eventually did. Some of them still do not speak in a way that anyone can understand. The doctor assured me that each case is going to be different for anyone with this deletion, and that we cannot use the computer to know for sure what Andy's outcomes will be. Sigh.
Hi Amy, My son also has a chromosome deletion- we found out when he was about 5 months old. He has a severe developmental delay in all areas- I know how you're feeling- great blog- thank you for sharing!
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