Rubinstein-Taybi syndrome is associated with intellectual and physical features. CREBBP and EP300 are causative. Few cases of EP300 mutations are reported. We report a case with mild features of RSTS and EP300 mutation on exome sequencing. This illustrates the utility of exome sequencing to expand every genetic phenotype.
Keywords: CREBBP; EP300; Rubinstein–Taybi syndrome; whole exome sequencing.