Subjects completing 104weeks ( 52-week main trial BEGIN ONCE-LONG + 52-week extension ) on insulin degludec ( IDeg ) OD + metformin with HbA1c7 .0 % ( 53mmol/mol ) were randomized to IDeg + Lira [ n = 88 , mean HbA1c : 7.7 % ( 61mmol/mol ) ] or IDeg + IAsp ( n = 89 , mean HbA1c : 7.7 % ) for 26weeks , continuing metformin .