Required for myofibril assembly and outgrowth of the cardiac chambers in the developing heart (By similarity). Appears to be catalytically inactive, showing no activity against O-acetyl-ADP-ribose (By similarity). {ECO:0000250|UniProtKB:Q6AZR2, ECO:0000250|UniProtKB:Q8BGK2}. This is the function of ENSG00000153531 (ADPRHL1, ADP-ribosylhydrolase like 1).