Barium enema or manometry and/or complete thickness rectal biopsy for sufferers with a brief history of constipation to identify Hirschsprung disease; and Imaging for neural crest tumors in individuals at risk predicated on their PHOX2B mutation. Because PHOX2B exerts its influence therefore early in embryonic advancement, no gene therapy yet exists, though this will undoubtedly be a target of future investigations. Pre-implantation genetics will become another target. Prenatal testing for families with a known PHOX2B mutation is obtainable already. ‘Many PHOX2B mutations occur spontaneously, so long as neither mother or father is affected by CCHS.What he found is definitely that young stem cells from normal mice included no stain and for that reason little if any DNA damage. Older stem cells, however, showed considerable staining. All of this provides up to one thing: blood-forming stem cells perform accumulate DNA harm with age even though they hardly ever divide, and that harm is passed on to the bloodstream and immune system cells they make. Weissman stated these findings could explain the origin of blood cancer and immune dysfunctions that occur as people age.