While the data argued that SSTR2 opposed to NCL would represent a cancer-specific molecule for targeting, we also included a common reference to gain an estimate of the overall intensity of expression of SSTR2 and NCL. This methodology neither takes into consideration that the qRT-PCR assays for SSTR2 and NCL may have different performance, nor the different levels of post-transcriptional and -translational regulation. This evidence concerns the gene NUCLEOLIN and cancer.