NEUROG1 and colorectal cancer: 19 Herbst Herbst A A ,  Rahmig Rahmig K K ,  Stieber Stieber P P ,  Philipp Philipp A A ,  Jung Jung A A ,  et al et al  ( 2011 2011 )  Methylation of NEUROG1 in serum is a sensitive marker for the detection of early colorectal cancer Methylation of NEUROG1 in serum is a sensitive marker for the detection of early colorectal cancer .