Hairy/enhancer-of-split related with YRPW motif protein 2, Cardiovascular helix-loop-helix factor 1, hCHF1, Hairy and enhancer of split-related protein 2, HESR-2, Hairy-related transcription factor 2, hHRT2, HES-related repressor protein 2, Protein gridlock homolog, HEY2, CHF1, GRL, HERP, HERP1, HRT2