in 381 by the First Council of Constantinople as "consonant to the holy and great Synod of Nice". Further, a creed "almost identical in form" was used as early as 374 by St. Epiphanius of Salamis. The amended form is presently referred to as the Niceno-Constantinopolitan Creed.

Creedal scholar J.N.D. Kelly suggests that since the First Council of Constantinople was not considered ecumenical