PARP1 and neuroblastoma: To define a set of credible risk variants in PARP1 gene, that may be associated with NB patients’ induction response, we selected 176 variants (Figure 2 and Table S1) within regions of putative enhancer activity (H3K27 acetylation) in at least 15 out of 27 cell lines (25 NB and 2 neural crest cells) by using ChIPseq data deposited in GEO database (http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE90683).