In the 2013 episode "The Time of the Doctor," the Eleventh Doctor clarified he was the product of the twelfth regeneration, due to a previous incarnation which he chose not to count and one other aborted regeneration.
I 2013 episoden The Time of the Doctor, fastslår den Ellevte Doktor at han var produkt af den tolvte regeneration, på grund af en tidligere inkarnation som han valgte ikke at tælle og en anden abortéret regeneration.