why can’t downsyndrome be cured and why does one chromosome affect so much in the body? Thankyou for answering my other

Question: why can't downsyndrome be cured and why does one chromosome affect so much in the body? Thankyou for answering my other questions also
- Keywords:
  cure,
  disease,
  downs syndrome
Asked by to Phillip on 19 Jun 2014. This question was also asked by .
- Phillip Manning answered on 19 Jun 2014:
  
  Gene therapy might be the clue to preventing Down Syndrome in the future, plus there is amazing work being undertaken on stem-cell research, but this is still early days. A single chromosome holds a vast amount of genetic information to control the development of an embryo….so when missing, it has significant impact on the embryo.

Question: why can't downsyndrome be cured and why does one chromosome affect so much in the body? Thankyou for answering my other questions also