Detailed text transcripts for TV channel - KGO - 20181129:01:43:00
>> reporter: the doctor also claiming there is now a second pregnancy in his study. gene editing, which involves altering a section of dna, could soon be used to treat life-threatening diseases. but its use on embryos is banned in the united states and many countries. much of the scientific community is outraged, saying he violated accepted guidelines. >> all of those things were ignored in this study and it's extremely disturbing. >> reporter: an american professor is also being investigated for his role. dr. michael deem of rice university tells the associated press he met the families when ...