article_snippet.sent: However, others argue that the technology could also be used to rid families of devastating inherited diseases like cystic fibrosis or certain cancers.
article_snippet.sent: Germ line genetic editing alters the DNA in sperm and egg cells -
article_snippet.sent: meaning the changes can be passed on .
article_snippet.sent: Until now scientists have concentrated on using genome editing techniques on somatic cells - non-reproductive cells like those found in skin, muscle, nerves, bone and liver for example - to help scientists study diseases.
article_snippet.sent: Modifying the DNA of human embryos so that DNA changes are preserved in the germ line -
article_snippet.sent: the sperm and eggs - means such alterations can be passed on to future generations.
article_snippet.sent: Dr Luhan Yang, a scientist with Church's group proposed using immature egg cells from the ovaries taken from women undergoing surgery for ovarian cancer.
article_snippet.sent: immature egg cells would be grown and coaxed into dividing before a gene-editing technique known as CRISPR would be used to correct the genetic fault that was causing ovarian cancer.
article_snippet.sent: This legalised the donor replacement of mitochondrial DNA – the so-called batteries which power the body’s cells.
article_snippet.sent: Edward Lanphier, chairman of the Alliance for Regenerative Medicine in Washington DC, and four colleagues wrote: 'It is thought that studies involving the use of genome-editing tools to modify the DNA of human embryos will be published shortly. '
article_snippet.sent: In our view, genome editing in human embryos using current technologies could have unpredictable effects on future generations. '
article_snippet.sent: Such research could be exploited for non-therapeutic modifications. '
article_snippet.sent: At this early stage, scientists should agree not to modify the DNA of human reproductive cells.'
highlights_snippet.sent: Leading researchers warn germ line modification is 'dangerous and ethically unacceptable'
  