Outcome of 37 attempts of OI at St Barnabas (1996‐2001) (1) XO TOP: (2) XX (1) OI; (2) OD 6/8 showed no evidence of donor mtDNA Chen et al RBMOnline 33, 737 (2016) Page 91 of 125 PRECONGRESS COURSE 15 I BARCELONA, SPAIN – 1 JULY 2018 97